ms. smith sharpened 135 pencils. her students used 88 of them how many sharpened pencils does Ms. smith have left.

we have the function

h(x)=-3x-1

this is the equation of a line

To graph a line we need at least two points

so

Find out the intercepts

step 1

Find out the x-intercept (value of x when the value of y=0)

For h(x)=0

substitute

0=-3x-1

3x=-1

x=-1/3

the x-intercept is (-1/3,0)

as the value is a fraction, take another point

For x=2

h(x)=-3(2)-1

h(x)=-7

we have the point (2,-7)

step 2

Find out the y-intercept (value of h(x) when the value of x=0)

For x=0

h(x)=-3(0)-1

h(x)=-1

the y-intercept is (0,-1)

step 3

we have the points

(2,-7)

(0,-1)

To graph, the line, plot the given points and join them

using a graphing tool

Reason:

87.5% of the students take the bus to school

100% - 87.5% = 12.5% of the students do not take the bus to school

The info about the "18 boys and 46 girls" is put there as a distraction since it's never used.

1) When q = 13, the expression q - 10 is; 3

2)  When x = 4.2, the expression 34.5x is; 144.9

3) The simple interest you would earn in 2.5 years is;  $5.25

1) We want to evaluate the following expression;

q - 10 when q = 13.

Thu, we will plug in 13 for q to get;

13 - 10 = 3

2) We want to evaluate the following expression;

34.5x when x = 4.2

Plug in 4.2 for x to get;

34.5 * 4.2 = 144.9

3) The formula for simple interest is;

I = PRT/100

Where;

P is principal

R is rate

T is time

We are given;

P = $70

R = 3% = 0.03

Time; T = 2.5 years

Thus;

I = 70 * 0.03 * 2.5

I = $5.25

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The amount of money earned by each person will be;

Savannah = $190

Greg = $180

Kevin = $165

From the information, the following can be deduced:

Savannah works $9.50 per hour.

Greg works $9 per hour.

Kevin works $8.25 per hour

Therefore, they all work for 20 hours. The amount for each person will be:

Savannah works $9.50 per hour. = $9.50 × 20 = $190

Greg works $9 per hour. = $9 × 20 = $180

Kevin works $8.25 per hour = $8.25 × 20 = $165

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Savannah works $9.50 per hour.

Greg works $9 per hour.

Kevin works $8.25 per hour

If all tree friends worked 20 hours during the week, how much does each person earn?

Using the exterior angle theorem, the value of x in the triangle is: x = 8.

The exterior angle theorem states that the measure of the angle formed outside a triangle when a side is extended through one of the points of the triangle is equal to the sum of the remote interior angles of the triangle.

Triangle LMN is shown in the diagram attached below, where:

The measure of angle MNO = (5x + 2)°

The measure of angle NLM = (x + 10)°

The measure of angle LMN = (x + 16)°

Therefore:

Measure of angle MNO = measure of angle NLM + measure of angle LMN [based on the exterior angle theorem]

Substitute

(5x + 2)° = (x + 10)° +  (x + 16)°

Solve for x

5x + 2 = x + 10 +  x + 16

Combine like terms

5x + 2 = 2x + 26

5x + 2 - 2x = 2x - 2x + 26 [subtraction property of equality]

3x + 2 = 26

3x + 2 - 2 = 26 - 2  [subtraction property of equality]

3x = 24

3x/3 = 24/3 [division property of equality]

x = 8

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We want to know which values of m satisfy ≤

5m + 1 4

Substracting 1 both sides:

-1 - 1

+03

5m ≤ 3

Dividing by 5 both sides

/5/5

m ≤ 3/5

m ≤ 0.6

Since 1 and 2 are higher than 0.6 and 0 ≤ 0.6

Then if m=0 it is satisfied

this is transformations or enlagement of triangle by a certain scale factor.

which simply means it can either be double, or shortened .

solution

a. angle T is the preimange of angle T'

b. line RS and RS'

c. line RT and RT'

line ST and ST'

extra note: this is ∆RST filled over but shortened by x factors to mirror image ∆RST

     The number that produces zero when multiplied by an is known as the additive inverse of a number, or a, in mathematics. The opposite (number),[1] sign change,[2] and negation are other names for this number. [3] The additive inverse (opposite number) of a positive number is negative, and the additive inverse of a negative number is positive, when applied to a real number. The additive inverse of zero is zero.

   Subtraction, which can be seen as adding the opposite, is closely related to additive inverse:

   a − b  =  a + (−b).

On the other hand, additive inverse can be compared as subtracting from zero:

−a = 0 − a.

As a result, the unary minus sign can be used to represent subtraction without using the "0" symbol, even though there shouldn't be a space after the unary "-" in proper typography.

 Negation has the following algebraic characteristics in addition to the identities mentioned above:

It is an Involution operation when (a) = a.

−(a + b) = (−a) + (−b)

−(a − b) = b − a

a − (−b) = a + b \s(−a) × b = a × (−b) = −(a × b)

(−a) × (−b) = a × b

Particularly, (a)2 = a2.

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Answer:33/4

Step-by-step explanation: its hard to explain but thats the correct answer 33/4 decimal form is 8.25 and mixed number is 8 1/4

Two figures are said to be "congruent" if they can be positioned perfectly over one another. Both of the bread slices are the same size and shape when stacked one on top of the other. Congruent refers to things that are exactly the same size and shape.

For these items, the word equal is frequently used in place of congruent. If two line segments are the same length, they are said to be congruent. If two angles have the same measure, they are said to be congruent. If two circles have the same diameter, they are congruent.

While equality deals with numbers, congruence deals with shapes (also known as objects). Neither "two shapes are equal" nor "two numbers are congruent" are statements that you make. If one shape can be perfectly superimposed on the other, then two shapes are said to be congruent. While equality deals with numbers, congruence deals with shapes (also known as objects).

Gestures are logical and consistent with what is being spoken. Despite not being the same, both ideas are entirely consistent. We play a game, say things we don't mean, and act contrary to our ideals. The choice is more challenging if the hip appears to be in congruence even with the

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The required numbers are [tex]2\frac{2}{5}[/tex] and [tex]2\frac{5}{8}[/tex] .

In this question , given is [tex]2\frac{2}{5}[/tex] , [tex]2\frac{2}{7}[/tex] , [tex]1\frac{7}{8}[/tex] , [tex]2\frac{1}{10}[/tex] , [tex]2\frac{5}{8}[/tex]

So when we solve it we get;  [tex]\frac{12}{5} , \frac{16}{7} , \frac{15}{8} , \frac{21}{10} , \frac{21}{8}[/tex]

We need two numbers whose sum should be greater than 5

first adding the numbers which have the same denominator we get:

[tex]\frac{15}{8} + \frac{21}{8}[/tex]

[tex]\frac{36}{8}[/tex]

which on dividing will give us 4.5 < 5

Lets take numbers [tex]\frac{12}{5} , \frac{16}{7}[/tex]

On taking LCM we get ;

[tex]\frac{84+ 80}{35}[/tex] = [tex]\frac{164}{35}[/tex] = 4.6 < 5

Lets now take [tex]\frac{16}{7} + \frac{15}{8}[/tex] = [tex]\frac{128+ 105 }{56}[/tex] = [tex]\frac{233}{56}[/tex] = 4.16 < 5

Lets take [tex]\frac{12}{5} + \frac{21}{8}[/tex] = [tex]\frac{96+ 105}{40}[/tex] = 5.025 > 5

Thus the required numbers are : [tex]\frac{12}{5} and \frac{21}{8}[/tex].

So in these type of questions we are supposed to take two or the numbers which have been given in the question and then we should add or subtract them as per the question .

Likewise in this question we had to find two numbers and after so many trials we were able to get the two required numbers.

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A rough sketch of the rectangular plot is

The perimeter of the rectangle is given by the formula:

Where,

and,

i

The perimeter is 320, so we can write:

Total fencing cost $3120 and this is 1 length side and 2 width side.

The fencing on length side is $24 per foot and width side is $4 per foot.

e can write an equation:

Now, we have to solve the 2 simultaneous equations,

Let's solve with elimination >>>>

We can substitute this value of "l" into the first equation and solve for "w". This is shown below:

Thus,

The amplitude is determined as the distance from the midline of the cosine function.

From the graph provided, the depth is shown as 3 units (between 5 units and 2 units) which puts the midline at 3.5 units. The amplitude therefore is 1.5

FOR ARITHMETIC

[tex]lhs = 9 - 4 \\ lhs = 5 \\ rhs = 4 - 1 \\ rhs= 3 \\ \\ lhs \: not = rhs[/tex]

SINCE THERE IS NO COMMON DIFFERENCE LET US TEST FOR A GEOMETRIC SEQUENCE.

[tex]lhs = \frac{9}{4} \\ \\ rhs = \frac{4}{1} \\ rhs = 4 \\ \\ lhs \: not = rhs[/tex]

THERE IS NO COMMON DIFFERENCE NOR A COMMON RATION THIS MEANS THAT THE SEQUENCE IS NEITHER AN ARITHMETIC NOR A GEOMETRIC SEQUENCE.

THE OPTION IS A.NEITHER.

The order from smaller to greatest is -11.5, -11, -10, 12, 12.5.

Zero, a positive natural number, or a negative integer denoted by a minus sign are all examples of integers. The inverse additives of the equivalent positive numbers are the negative numbers. The set of integers is frequently represented in mathematical notation by the boldface Z or blackboard bold math Z.

The value of a continuous quantity that can represent a distance along a line is a real number. René Descartes first used the word "real" in this meaning in the 17th century when he made a distinction between the real and imaginary roots of polynomials.

Given numbers are -11.5, -11, -10, 12.5, 12

The order from smaller to greatest is -11.5, -11, -10, 12, 12.5.

Real numbers: -11.5, -11, -10, 12, 12.5.

Rational numbers: -115/10, 125/10

Integer numbers: -11.5, -11, -10, 12, 12.5.

Whole numbers: 12, 12.5, 26

Therefore, the order from smaller to greatest is -11.5, -11, -10, 12, 12.5.

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The mean of the sampling distribution of sample means when 35 random components are tested will be 4.05 years.

From the information, it should be noted that the journalist believes that, in reality, these components have a shorter lifespan than what the company is reporting.

He then tests a random group of 35 of these components and finds a mean lifespan of 4.05 years.

Therefore from the information, we acne see that the mean lifespan has already been given.

Therefore, the mean lifespan is 4.05 years.

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Answer:

x=0

Step-by-step explanation:

if y = -8

the y^2 = -8 times -8 = 64

x^2 + 64 = 64

        -64    -64

x^2=0

x=0

The monthly deposit that Florence must make in order to reach her goal is  $366.74.

The series of payments that must be made is known as an annuity. An annuity is a series of payment made over a period of time. The amount that is invested monthly would grow at an exponential rate. This is because both the amount invested and the interest that has been accrued grows at each compounding period.

The formula to determine the monthly deposit is:

Monthly deposit = future value / annuity factor

Annuity factor = {[(1+r)^n] - 1} / r

Where:

(65 - 22) x 12

43 x 12 = 516

1,200,000 ÷ [((1.00583)^516]}- 1 / 0.00583] = $366.74

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Answer:

  no universal test point

Step-by-step explanation:

You want to know if there is or is not a universal test point that can be used for testing the shading for a linear inequality.

The purpose of a test point for the graph of an inequality is to determine whether the shaded area includes the test point or not. A single inequality will divide the universal set into two parts: one part that is the solution set, and one part that is not the solution set.

A point that is well inside the solution set (or not-a-solution set) will tell you which side of the boundary is shaded. Any point that always meets that requirement could be considered a universal test point.

The boundary point(s) between these sets may or may not be shaded, but its(their) shading, or lack of it, will not tell you which half of the universal set is the solution set. That is, any point that falls on the boundary of the solution set is not a suitable test point.

The boundary can be anywhere, so there is no single universal test point.

__

Additional comment

A set of three non-collinear points can be considered to be a universal test set. Together, they can tell you which part of the universal set is the solution set. At most, the boundary line can pass through two of them, so the third can tell you which half of the universe it lies in.

Answer:

(3,2)

Step-by-step explanation:

The equation of the line graphed is

y = 2/3x + 2

Parallel lines have the same slope.

y = mx + b

y = 2/3x + 0  P tells me that the y-intercept is 0

y = 2/3 x  Which point would make this true?

Point (3,2)  We plug in 3 for x and 2 for y

2 = 2/3(3)

2 = 2 This is a true statement, so the point (3,2) is on the line.

Answer:

8%3-29xy

Step-by-step explanation:

thats the answer

The error that the customer made was that he subtracted 3 from 10 instead of dividing 3 by 10.

It is given in the question that at the clothing store T-shirts are on sale, 3 for $10. A customer at the store says that one T-shirt should cost $7 at this rate.

We have to find the error made by the customer while calculating the rate of a T- shirt.

To find the rate of a shirt we will divide the number of shirts by the total amount.

Hence, the rate of a shirt will be $  10/3

But the customer subtracted 3 from 10 to get $ 7 as the rate of a T-shirt.

Hence, the customer subtracted 3 from 10 instead of dividing 3 by 10.

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If $44,900 is invested at an interest rate of 7% per year,investment at the end of 5 years is

1)Annual =61712.27

2)Semiannual=62066.34

3)monthly= 62375.51

4)daily = 62287.59

Over a specific time period, compound interest builds up on both the principal and interest. A principal is also included when accounting for interest that has accrued on it over time. The cumulative principal value is used to calculate interest for the upcoming period as well.

Given that : If $44,900 is invested at an interest rate of 7% per year .

p =44,000

R = 7%

t =5

(2)Semiannual means  compounding is in a year done means two times hence, n = 2

We know

A(t) =p[tex][1 +\frac{r}{n} ]^{nt}[/tex]

A(5) = 44000[tex][1+\frac{0.07}{2} ]^{2(5)}[/tex]

A(5)=62066.34

(1) Annual means. compounding is done 1 time for  a year

So, n = 1

A (5) = 44000[tex][1 + 0.07]^{(5)}\\[/tex]

A(5)= 61712.27

(3)Monthly means compounding is done 12 times in a year.

So, n = 12

= 44000[tex][1 + \frac{0.07}{12} ]^{60}\\[/tex]

= 62375.51

(4)For daily put n = 365

A(5) = 44000[tex][1 + \frac{0.07}{5} ]^{5(5)}\\[/tex]

= 44000[tex][1 + \frac{0.07}{5} ]^{25}\\[/tex]

=62287.59

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Since the two triangles in the given are similar triangles, we now know that they both have the same angle, but scaled, meaning they have different side lengths.

Base on the given, XA = 15, while XZ = 27

We can now assume that if XA : XZ, BA : YZ

We can rewite this as:

Now, plugging in the values of XA, XZ, and BA, we can now solve for YZ.

We now see that the length of YZ is 36 inches.

Next, to solve for XY, we will use the same method, but this time we will be using XB instead of BA.

Therefore, XY is 18 inches long.

The inequality that can be used to find the domain of f(x) is x - 3 ≥ 0.

The correct answer is the second one i.e.x minus three over or equal to zero.

Given:

Function f(x) = √x-3

The fact that a negative number cannot be used as the term in the root square, so

x - 3 ≥ 0  which implies that, x ≥ 3.

From the inequality, we can tell that the domain of the function is the interval [3,∞).

Hence the inequality is x - 3 ≥ 0.

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Answer: 14

Step-by-step explanation: https://brainly.com/question/15694490

ANSWER:

80°

STEP-BY-STEP EXPLANATION:

Since the sides XZ and YZ are equal, the angle We know that the sum of all the angles is equal to 180 °, therefore:

We are asked to determine the value of the variation of the angle with respect to "x". To do that we will determine an equation that relates "x" and the angle using the following right triangle:

We can use the function tangent since this is defined as:

Now, we plug in the values:

Now, we will determine the angle when "x = 2000". We substitute 2000 in the equation:

Now, we take the inverse function of the tangent:

Solving the operations we get:

Therefore, the angle is 56.31 degrees or 0.983 radians.

We are asked to determine the value of the derivative of "x" with respect to "t". Since this is equivalent to the velocity of the plane we have that:

Now, we are asked to determine the derivative of the angle with respect to time. To do that we will determine the derivative with respect to time on both sides of the equation:

For the derivative on the left side, we know that the derivative of the tangent is the secant squared, therefore, we have:

Now, we determine the derivative on the right side using the following formula:

Applying the rule we get:

Now, we solve for the derivative of the angle with respect to time:

Now, we substitute the values:

Solving the operations:

Therefore, the variation of the angle with respect to time is 0.047 rad/s.

This means that the dish is rotating at a speed of 0.047 rad/s.

Answer: We are asked to determine the value of the variation of the angle with respect to "x". To do that we will determine an equation that relates "x" and the angle using the following right triangle:We can use the function tangent since this is defined as:Now, we plug in the values:Now, we will determine the angle when "x = 2000". We substitute 2000 in the equation:Now, we take the inverse function of the tangent:Solving the operations we get:Therefore, the angle is 56.31 degrees or 0.983 radians. We are asked to determine the value of the derivative of "x" with respect to "t". Since this is equivalent to the velocity of the plane we have that:Now, we are asked to determine the derivative of the angle with respect to time. To do that we will determine the derivative with respect to time on both sides of the equation:For the derivative on the left side, we know that the derivative of the tangent is the secant squared, therefore, we have:Now, we determine the derivative on the right side using the following formula:Applying the rule we get:Now, we solve for the derivative of the angle with respect to time:Now, we substitute the values:Solving the operations:Therefore, the variation of the angle with respect to time is 0.047 rad/s.This means that the dish is rotating at a speed of 0.047 rad/s.

Step-by-step explanation: