find the sum by using a number line -9+8=​

Answer:

-3(-1) + 4 = 3 + 4 = 7

-3(0) + 4 = 0 + 4 = 4

-3(1) + 4 = -3 + 4 = 1

-3(2) + 4 = -6 + 4 = -2

Answer:

Step-by-step explanation:

Put the left dot on negative 4, and then put the right dot on positive 6.

For the quadratic equation:

x^2 + 7x = 8x + 12

The two solutions are:

x = 4

x = -3

I'm only solving the first question, as it is how the guidelines say.

Here we have the quadratic equation:

x^2 + 7x = 8x + 12

First, we can rewrite this equation as:

x^2 + 7x - 8x - 12 = 0

x^2 - x - 12 = 0.

Using Quadratic formula we can see that the solutions (or zeros of the quadratic) are:

x = (1 ± √(  (-1)^2 - 4*1*-12))/(2*1)

x = (1 ± 7)/2

Then the two solutions are:

x = (1 + 7)/2 = 4

x = (1 - 7)/2 = -3

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In the picture there is a prism with measures. The surface area of prism is 156.

Given that,

In the picture there is a prism with measures.

We have to find the surface area of prism.

The surface area of prism=(2×base area)+(Base perimeter×height)

The base is trapezoid

So, the area of trapezoid is (a+b)/2×h

=(6+12)/2×4

=18/2×4

=9×4

=36

Here base area we got is 36.

Now, we find the perimeter of trapezoid is a+b+c+d

=6+12+5+5

=18+10

=28

Here, base perimeter we got is 28.

Now surface area of prism is

=(2×36)+(28×3)

=72+84

=156

Therefore, the surface area of prism is 156.

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Answer:

seven and a half hours

Step-by-step explanation:

aa

x = 30

Step-by-step explanation:

Given,

y = 10, x = ?

2y+y = x → Equation no. (1)

Substitute the value of y in Equation no. (1) then,

2(10)+10 = x

20+10 = x

30 = x (OR) x = 30.

By using the concept of uniform rectilinear motion, the distance surplus of the average race car is equal to 3 / 4 miles. (Right choice: A)

In accordance with the statement, both the average consumer car and the average race car travel at constant speed (v), in miles per hour. The distance traveled by the vehicle (s), in miles, is equal to the product of the speed and time (t), in hours. The distance surplus (s'), in miles, done by the average race car is determined by the following expression:

s' = (v' - v) · t

Where:

Please notice that a hour equal 3600 seconds. If we know that v' = 210 mi / h, v = 120 mi / h and t = 30 / 3600 h, then the distance surplus of the average race car is:

s' = (210 - 120) · (30 / 3600)

s' = 3 / 4 mi

The distance surplus of the average race car is equal to 3 / 4 miles.

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The equivalent number to 2.76 is the mixed number 2 + 19/25.

Here we need to see which option is equivalent to the given number, which is 2.76.

We can rewrite this as a mixed number.

2 + a/b

Such that:

a/b = 0.76

By looking at the options, we can see:

19/25 = 0.76

Then the correct option is:

2 + 19/25

So the third option is the correct one.

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Answer:

As a fraction: 3/50

It cannot be turned into a mixed number

Answer:

y = x(2.50)+3.25

Step-by-step explanation:

y (total cost )= x (miles rode) * 2.50 (cost per mile) + 3.25 (initial cost)

The compound interest of $182.60 will not be enough to pay for the award.

So, annual interest will be sufficient to serve the award:

(Refer to the compound chart given below)

Therefore, the compound interest of $182.60 will not be enough to pay for the award.

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Clay and Jason are 600 feet far apart.

When an object goes above the surface, the altitude is measured as +ve and when an object goes below the surface, the altitude is measured as -ve.

Since Clay is flying a helicopter at an altitude of 400 feet in the air,

The Value of altitude of Clay = +400

Since, Jason is diving 200 feet below the surface,

The Value of altitude of Jason = -200

The the distance between Clay and Jason = (The Value of altitude of Clay) - (The Value of altitude of Jason)

= +400 - (-200)

= 400 + 200

= 600 feet

Therefore, the distance between Clay and Jason is 600 feet.

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Using Venn diagram, if a student is chosen randomly, (a) the probability that he or she is not in any of the language classes is 0.5, (b) the probability that he or she is taking exactly one language class is 0.32, and (c) if 2 students are chosen randomly, the probability that at least 1 is taking a language class is 0.753.

Venn diagram is a diagram used to present the relationship between sets in a logical form. (See attached image)

Let A = students in the Spanish class = 28

B = students in the French class = 26

C = students in the German class = 16

Hence, the probability of each class is:

P(A) = 28/100 = 0.28

P(B) = 26/100 = 0.26

P(C) = 16/100 = 0.16

P(A ∩ B) = 12/100 = 0.12

P(B ∩ C) = 6/100 = 0.06

P(A ∩ C) = 4/100 = 0.04

P(A ∩ B ∩ C) = 2/100 = 0.02

(a) P(not A, B, C) = 1 - P(A ∪ B ∪ C)

P(not A, B, C) = 1 - [P(A) + P(B) + P(C) - P(A ∩ B) - P(B ∩ C) - P(A ∩ C) + P(A ∩ B ∩ C)]

P(not A, B, C) = 1 - (0.28 + 0.26 + 0.16 - 0.12 - 0.06 - 0.04 + 0.02)

P(not A, B, C) = 1 - 0.5

P(not A, B, C) = 0.5

(b) P(A, B, C only) = P(A only) + P(B only) + P(c only)

P(A, B, C only) = [P(A) - P(A ∩ B) - P(A ∩ C) + P(A ∩ B ∩ C)] + [P(B) - P(A ∩ B) - P(B ∩ C) + P(A ∩ B ∩ C)] + [P(C) - P(B ∩ C) - P(A ∩ C) + P(A ∩ B ∩ C)]

P(A, B, C only) = (0.28 - 0.12 - 0.04 + 0.02) + (0.26 - 0.12 - 0.06 + 0.02) + (0.16 - 0.06 - 0.04 + 0.02)

P(A, B, C only) = 0.14 + 0.10 + 0.08

P(A, B, C only) = 0.32

(c) P = 1 - (50/100 x 49/99)

P = 1 - (49/198)

P = 149/198

P = 0.753

To complete the problem, here are the questions:

(a) If a student is chosen randomly, what is the probability that he or she is not in any of the language classes?

(b) If a student is chosen randomly, what is the probability that he or she is taking exactly one language class?

(c) If 2 students are chosen randomly, what is the probability that at least 1 is taking a language class?

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Mang Efren's present age is 30 years.

Let's assume the present age of Mang Efren's son is x years.

Mang Efren is presently 5 times as old as his son.

So, Mang Efren's present age = 5x years

Four years ago,

Mang Efren's son's age = x - 4 years.

Mang Efren's age = 5x - 4 years

According to the question, four years ago, the product of their ages was 52.

From this information, we will create an equation.

(x - 4)(5x - 4) = 52

5x² - 4x - 20x + 16 = 52

5x² - 24x + 16 - 52 = 0

5x² - 24x - 36 = 0

Solving the quadratic equation to obtain the value of x,

5x² - 30x + 6x - 36 = 0

5x(x -6) + 6(x - 6) = 0

(5x - 6)(x - 6) = 0

x = 6

So, Mang Efren's present age is 5 × 6 = 30 years.

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Answer:

[tex] = \frac{ {4x}^{2} {y}^{4} \sqrt{5z} }{5z} [/tex]

Step-by-step explanation:

[tex] \sqrt{ \frac{16x {}^{4} y {}^{8} }{5z} } \\ = \sqrt{ \frac{16 {x}^{4} y {}^{8} }{ \sqrt{5z \\ } } } \\ = \frac{4 {x}^{2}y {}^{4} }{ \sqrt{5z} } \\ = \frac{ {4x}^{2} y {}^{4} \sqrt{5z} }{5z} [/tex]

Answer: 51

Step-by-step explanation:

Answer: C, x = -16

Step-by-step explanation:

1. Distribute

7x-2(x+1)=6x+14

7x-2x-2=6x+14

2. Combine like terms

7x-2x-2=6x+14

5x-2=6x+14

3. Add 2 to both sides

5x-2+2=6x+14+2

4. Simplify

Add the numbers

5x=6x+16

5. Subtract 6x from both sides

5x-6x=6x+16-6x

6. Simplify

Combine like terms

-x=16

7. Divide both sides by the same factor

-x/-1=16/-1

8. Simplify

Cancel terms that are in both the numerator and denominator

Divide the numbers

Answer:

8800000 or 88x 10^5

Step-by-step explanation:

4x2200000=8800000

Based on the fact that the two numbers multiply to 2,400 and add up to -16, the numbers are undefined.

Assume that one of the numbers is x and the other number is y, the system of equations to represent this is given that the two numbers add up to -16 and multiplying to 2,400:
x + y = -16

xy = 2,400

Expressing y in terms of x :

xy = 2,400

y = 2,400 / x

Solving for x gives:

x + y = -16

x + (2,400 / x) = -16

x = 0

y = 0

The problem given in the question is wrong because the results of x and y are undefined.

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Answer:

3x(x+6)

=(3x)(x+6)

=(3x)(x)+(3x)(6)

=3x2+18x

Step-by-step explanation:

Answer:

1) Conditional

If a month begins with letter M, then it has 31 days.

2) Converse

If a month has 31 days, then it begins with letter M.

3) Inverse

If a month does not begin with the letter M, then it does not have 31 days.

4) Contrapositive

  If a month does not have 31 days, then it does not begin with the letter M.

Step-by-step explanation:

1) Conditional

If a month begins with letter M, then it has 31 days.

2) Converse

If a month has 31 days, then it begins with letter M.

3) Inverse

If a month does not begin with the letter M, then it does not have 31 days.

4) Contrapositive

  If a month does not have 31 days, then it does not begin with the letter M.

Conditional statement states the original statement. If 'p' , then 'q'

Converse statement switch positions in the original if --then statement. If 'q', then 'p'

Inverse statement states the opposite of the original statement. If not 'p', then not 'q'.

Contrapositive if not 'q' , then not 'q'.

If the balance were growing according to the exponential function, the balance owed on your credit card after 9 months is equal to $1,502.02.

In Mathematics, an exponential function simply refers to a mathematical function whose values are generated by a constant that is raised to the power of an argument.

From the information provided, an exponential function that models or represents the rate at which the balance owed on your credit card triples is given by:

f(x) = 500(1 + 0.13)^x

Where:

After 9 months, the balance owed on your credit card would be calculated by substituting the value of x with 9 as follows:

Balance owed,  f(x) = 500(1 + 0.13)^9

Balance owed, f(x) = 500(1.13)^9

Balance owed, f(x) = 500 × 3.0040419380

Balance owed, f(x) = $1,502.02.

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Complete Question:

Growing linearly, the balance owed on your credit card triples from $500 to $1500 in 9 months. If the balance were growing according to the exponential function f(x) = 500(1 + 0.13)^x, where x represents the number of months, what would the balance be after 9 months? Round your answer to the nearest cent.

Answer:

$1502.02

Step-by-step explanation:

f(x)=500(1+0.13)^x

f(9) = 500(1.13)^9

f(9) = 500(3.004041938)

f(9) = 1502.02

Answer: $1502.02

The inequality expression given as |-4/3x - 5| > 19 has a solution of 10.5 < x < -18

From the question, the inequality is given as

|-4/3x-5|>19

Rewrite properly as

|-4/3x - 5| > 19

Remove the absolute bracket

So, we have the following representation

-19 > -4/3x - 5 > 19

Add 5 to all sides of the inequality

So, we have

-14 > -4/3x > 24

Multiply through by -3/4

So, we have

10.5 < x < -18

Hence, the solution to the expression is 10.5 < x < -18

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Answer: Sorry for the late answer, I was already answering it by the time someone else answered

Step-by-step explanation:

Since two angles on a straight line add up to 180, I used the angles given to find the adjacent angles to it by subtracting those angles from 180. Then, since the angles of a triangle add up to 180, I used the angles I just solved for to find the angle that is adjacent to n. I did the same thing I did to the first two angles by subtracting it from 180 to find n, which was 69 degrees

Answer:

can you turn it to the carma I can see it that good

correct value of x will 9 if Maggie corrected her mistake.

When the greatest power of the variable is consistently 1, an equation is considered to be linear. A one-degree equation is another name for it. The typical form of a linear equation with one variable is Ax + B = 0. The variables x and A in this situation are variables, whereas B is a constant.

Applying the parallel line theorem

alternate angles are always equal -

therefore ,

 4x + 2 = 7x - 25

27 = 3x

x = 9

so , the correct value of x will be 9 if maggie corrected her mistake

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Answer:

Step-by-step explanation:

No it does not hold for division nor subtraction. An example would be 8÷(4÷2)≠(8÷4)÷2. You would get two complete different answers. For the first equation you would get 4 where as for the second equation you would get 1.

The value of t for the angles of the given triangle will be 30.67.

The straight angle is equal to the total of the angles of a triangle. Three angles, one at each vertex and bounded by two neighbouring sides, make up a triangle. For a very long period, it was unknown if there were any alternative geometries for which the total is different.

The triangle has three sides and is a two-dimensional figure having the sum of the angles of 180 degrees.

In the given image the three angles are 2t, t + 8, and t - 12. The value of t will be calculated as:-

2t + t + 8 + t - 12 = 180

4t - 4 = 180

4t = 184

t = 184 / 4

t = 30.67

Therefore, the value of t for the angles of the given triangle will be 30.67.

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Given:

To draw the graph:

Let us find the slope as the ratio.

Comparing the given equation with y=mx+c

So, the slope m=4.

In ratio,

Let us take two points, (0,0) and (1,4).

So, the graph is,