Just need the bottom one answered

7th grade easy Math
NEED ANSWER ASAP DUE TODAY

Answer:

$21.40

Step-by-step explanation:

List price = $19.95

Sales Tax Rate = 7.25%

Total sales tax = 19.95 x 7.25/100 = $ 1.45

Total cost = 19.95 + 1.45 = $21.40

The following are the solutions to the given problems by using binomial probability principle:

1.) P(X ≤ 3)

P(X ≤ 3) = p(x = 0) + p(x = 1) + p(x = 2) + p(x = 3)

Use a binomial probability calculator :

P(X ≤ 3) = 0.277 + 0.365 + 0.231 + 0.093

P(X ≤ 3) = 0.966

2.) P(X < 3)

P(X < 3) = p(x = 0) + p(x = 1) + p(x = 2)

Use a binomial probability calculator :

P(X < 3) = 0.277 + 0.365 + 0.231

P(X < 3) = 0.873

3.)P(X ≥ 4)

P(X ≥ 4) = p(x = 4) + p(x = 5) +...+ p(x = 50)

Use a binomial probability calculator :

P(X ≥ 4) = 0.034

4.) P(1 ≤ X ≤ 3)

P(1 ≤ X ≤ 3) = p(x =1) + p(x =2) + p(x =3)

Use a binomial probability calculator :

P(1 ≤ X ≤ 3) = 0.365 + 0.231 + 0.093

P(1 ≤ X ≤ 3)= 0.689

D.) σ(X)

E(X) = np = 25 × 0.05

E(X)  = 1.25

σ(X) = √(npq)

σ(X) = √(25 × 0.05 × 0.95)

σ(X) = √1.1875

σ(X) = 1.090

E. Probability for none do have food allergy :

P(X = 0) = ⁵⁰C₀ × 0.05^0 × 0.95^50

P(X = 0) = 0.0769

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Answer:

130 degrees

Step-by-step explanation:

When two lines intersect, the opposite angles are equal, therefore, in this example, 7c+36 = 5c+40. We can find c using this equation.
7c+36 = 5c+40
7c-5c = 40-36
2c = 4
c = 4/2 therefore c=2

now that we know c is equal to 2, we can find out both of those angles.
therefore 5c+40 = (5*2)+40 = 10+40= 50
and 7c+36 = (7*2)+36 = 14 +36 = 50

now we know that those two angles add up to 100.

to find the sum of x and the angle opposite to x, subtract 100 from 360
360-100 = 260

since the angle opposite of x is equal to x, x+x = 260
2x=260
x=260/2 = 130

x is 130 degrees

Answer:

x = 130

Step-by-step explanation:

7c + 36 and 5c + 40 are vertically opposite angles and are congruent , so

7c + 36 = 5c + 40  ( subtract 5c from both sides )

2c + 36 = 40 ( subtract 36 from both sides )

2c = 4 ( divide both sides by 2 )

c = 2

Then

7c + 36 = 7(2) + 36 = 14 + 36 = 50

5c + 36 and x are a linear pair and sum to 180° , that is

50 + x = 180 ( subtract 50 from both sides )

x = 130

The equation of the line that has a slope of 7 and passes through the point (4, -2) is: y = 7x - 30.

If we are given a point on a line (x, y), and we know the slope (m) of the line, we can expressed the equation of the line in slope-intercept form as y = mx + b.

Given the following:

Slope of the line, m = 7

A point on the line = (4, -2).

Find the value of b by substituting x = 4, y = -2, and m = 7 into y = mx + b:

-2 = 7(4) + b

-2 = 28 + b

-2 - 28 = 28 + b - 28 [subtraction property of equality]

-30 = b

b = -30

To write the equation of the line, substitute m = 7 and b = -30 into y = mx + b:

y = 7x + (-30)

y = 7x - 30

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Step-by-step explanation:

-1/7 is exact form and Slash or / is division . -0.142857, Decimal form and horizontal line is division too . It is the simplest form .

The length of the diagonal AB of the cube is 8.7 cm.

Length of a face diagonal of cube = √2a, where a = Length of each side of a cube.

Length of body diagonal of a cube = √3a, where a = Length of each side of a cube.

Given:

Side length of the cube(a) = 5 cm

We have to find the length of the diagonal AB which is a body diagonal.

Length of Body diagonal(AB) = √3a

Substituting the given value in the formula,

Length of the body diagonal of cube = √3a

⇒ √3a ⇒√3 × 5 = 8.7 cm

Therefore, the length of AB i.e. the body diagonal of the cube is 8.7 cm.

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Answer:

126

Step-by-step explanation:

The area of the top triangle is (6)(6)/2 = 18 square meters.

The area of the bottom rectangle is (9)(12)=108 square meters.

Adding these, we get the total area to be 126 square meters.

By using percentage, the deductible amount is $103.73 for each paycheck. So, option b is correct.

We are provided by some percentage here. A percentage is a part of a whole that is expressed in hundredths.

Sally paid 38% of her annual health insurance premium of $4,350.00 and left with the 62%.

62% of $4,350.00 is equal to $2697

      62/100 x 4,350.00 = 2697

So, the net amount that Sally has to pay is $2697 in equal distribution from her 26 paychecks throughout the calendar year.

Therefore, each paycheck will be deducted as = $2697/26

                                                                        = $103.73

Hence, $103.73 will be deducted from her paycheck.

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Despite that JSR stock price was $52.33 in October, when the stock increase and decrease are accounted for, then, the price of the stock in December equals to $51.91.

Also known as share price, it refers to the price of a single share of a number of sale-able equity shares of a company.

Given data

Stock price for JSR was $52.33 in October.

November, the stock had increased by 9%

December, the price fell by 9%.

In November, the firm's stock price will be:

= Stock price in October * (1 + 0.09)

= $52.33 * (1.09)

= $57.0397

In December, the firm's stock price will be:

= $57.0397 * (1 - 0.09)

= $57.0397 * 0.91

= $51.906

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Answer:

2318

Step-by-step explanation:

Answer:

2'

Step-by-step explanation:

An eleven-foot long board must be cut into three pieces so that one piece is 1-foot shorter than half the length of the longest piece and the other piece is 3 feet shorter than the longest piece. How long is the shortest piece?

board 1 = 0.5L - 1

board 2 = L - 3

board 3 = L

so:

(0.5L - 1) + (L - 3) + L = 11'

0.5L - 1 + L - 3 + L = 11'

combine L on left side:

2.5L - 4 = 11

add4 from both sides:

2.5L - 4 + 4 = 11 + 4

2.5L = 15

divide both sides by 2.5:

2.5L/2.5 = 15/2.5

L = 6

Formula for boards are, substitute in L = 6:

board 1 = 0.5L - 1

= 0.5(6) - 1

= 3 - 1

= 2'

board 2 = L - 3

= 6 - 3

3'

board 3 = L

= 6

shortest board is board 1 at 2'

It will take 18 minutes to run 3 miles. For 7 miles, it will take him 42 minutes.

The unitary method is an approach for issue that involves first calculating the value of a single unit, then multiplying that value to find the required value. a single state. This has an identity element in math, in an algebra. Whose inverse is equivalent to its linear algebra, mathematical study of a matrix or operator,

Given Data

Charlie can run 4 miles in 28 minutes.

To run 1 mile,

4 miles = 28 minutes

1 mile - 6 minutes

For 3 miles,

3 miles = 3(6)

3 miles = 18 minutes

It will take 18 minutes to run 3 miles.

For 7 miles,

7 miles = 7(6)

7 miles = 42

For 7 miles, it will take him 42 minutes.

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Answer:

The correct answer is C. On the vertex of Figure A.

Step-by-step explanation:

Before you can find the answer to the question, you must first know what the center of dilation means in math. The center of dilation is a reference point used to appropriately scale the dilation of a figure. The vertex is the the point opposite to and farthest from the base of a geometrical figure, or the common endpoint of the sides of an angle.

Hope that helps! Have an amazing rest of your day!! :)

The entered points belong to a vertical line. There is no slope.

Equation: x = -19.

Answer:

Y = 60x

Step-by-step explanation:

Find the slope by finding Y2 - Y1/X2 - X1, 1 and 2 being two separate points on the graph. 120-0/2 = 6

If the length of the room is 17 inches one the architect's plan, the actual length of the room in feet if the scale of the plan is 1.25 inches to 3 feet is

40.8 feet

The length of the room on the architect's plan = 17 inches

The scale of the plan = 1.25 inches to 3 feet

That means

The length on the plan/ The actual length = 1.25 inches / 3 feet

Substitute the value of the length on the plan in the equation

17 / The actual length = 1.25/3

The actual length of the room  = 17/0.42

= 40.8 feet

Hence, if the length of the room is 17 inches one the architect's plan, the actual length of the room in feet if the scale of the plan is 1.25 inches to 3 feet is 40.8 feet

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       The length of the line segment bridging two points on a plane is known as the distance between the points. d=((x2 - x1)2 + (y2 - y1)2) is a common formula to calculate the distance between two points.

         Except for when the points coincide, distances in geometry are always positive. The distance between points A and B is equal to their respective distances. We take two points A(a,b) and B into consideration in order to calculate the formula for the distance between two points in the plane (c,d).

     In coordinate geometry, the distance between two given points is calculated using the distance formula. D=(x2x1)2+(y2y1)2 D = (x 2 x 1) 2 + (y 2 y 1) 2 is the formula for calculating the distance between two points (x1,y1) (x 1, y 1) and (x2,y2) (x 2, y 2).

    Say, for instance, that you are asked to determine the distance between two points at ( -6,-2 ) and ( -1,10).

First step:  

Give x 1, y 1, x 2, and y 2 their respective assignments.

Consider the cases where (x 1, y 1 ) = ( -6,-2)) and (x 2, y 2 ) = ( -1,-10).

      x1 = -6

      y1 =- 2

      x2 =  -1

      y2  = 10

Second Step:

Replace in the Distance Formula

Now that we know the numbers for x1, y1, x2, and y2, we can enter them into the Distance Formula.

d = √(-6,-2)² + (-1-10)²

   = √(8)² + (11)²

   = √16+22

   = √38.

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We can conclude that Angle ∠2 is 127°.

So, in order to solve for x, you must first write an expression using the following measurements from both ∠1 and ∠2.

Then, 5x + 12 = 6x - 11

Now, solve for x as follows:

We know that x = 23.

Solve for ∠2 as follows:

Therefore, angle ∠2 is 127°.

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The correct 4 Digit Code (no spaces) is 0164 .

In the question ,

the numbers representing the equation are given

to find

the first statement

-C.P-(-K.I)

From the figure we can see that C=2 ,P=7 ,K=5 ,I=4,

hence -C.P-(-K.I) = -2.7-(-5.4) = -14+20 = 6.0    .....(i)

the second statement

E/H + -L/T

From the figure we can see that E=3 ,H=4 ,L=5 ,T=8

hence E/H + -L/T = 3/4 + -5/8 = 3/4 - 5/8 = 1/8  ...(ii)

the third statement

B/W × -N/T

From the figure we can see that B=2 ,W=9 ,N=6 ,T=8

hence B/W × -N/T = 2/9 × -6/8 = -1/6    ...(iii)

the fourth statement

-F/J ÷ -M/V

From the figure we can see that F=3 ,J=5 ,M=6 ,V=8

hence -F/J ÷ -M/V = -3/5 ÷ -6/8 = 4/5   ....(iv)

From equation (i) , (ii) , (iii) and (iv) , we get

-C.P-(-K.I) = 6.0

E/H + -L/T = 1/8

B/W × -N/T = -1/6

-F/J ÷ -M/V = 4/5

the number from the red color lines are 0,1,6,4

hence the code is 0164 .

Therefore , the correct 4 Digit Code (no spaces) is 0164 .

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Answer:

It would go 3 to the write of x.

Step-by-step explanation:

If B is the 3 spaces to the left of x and T is three spaces to the right of x, x would be in the middle.

In the picture, you have B=2, X= 5

so T goes if X is the midpoint of BT is

X= (B+T)/2

5 x 2= 2+ T

10 = 2+T

therefore, T = 8

The expression to represent the number of hours Erica babysits  each week is 7x .

In mathematics, an expression that was created using integer variables, constants, and algebraic operations is known as an algebraic expression (addition, subtraction, multiplication, division and exponentiation by an exponent that is a rational number) .

Erica works x hours each day and there are 7 days in a week.

Hence Erica works 7x hours in a week

Therefore the expression to represent the number of hours Erica babysits  each week is 7x .

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The correct answers are point of intersection and point plotted on an object.

5a^3 x 2b^2 x 4a^2 x b^5 / 3a^2 x 5b^3 (rewrite)

= 20a^5 x 2b^7 / 3a^2 x 5b^3
= 40a^5 x b^7 / 15a^2 x b^3
= (8/3) x a^3 x b^5

Answer: The answer should be 3 hours

Step-by-step explanation: 8+4=12, divide the sum by 36: 36÷12=3

She had worked 3 hours.

Answer: c

Step-by-step explanation:

A is 190 divided by 125

B is 190 multiplied with 125 (product of the two numbers)

D is the sum of 190 and 125 (addition)

the difference will be found by subtracting the smaller number from the bigger number

Answer: If you had a fraction, you would have to turn into a decimal, then a percent. You can turn a decimal into a percent by multiplying the decimal by 100 and adding the percent sign. Hopefully this helps!

Answer: Like so:

30 percent of 50...

30/100= 0.30 (percentage)

0.30*50= 15 (discount, deducted amount, etc...)

Subtract answer from original number:

50-15= 35

30% of 50= 15

New amount= 35

Square root 12+Square root 6/Square root 3+1. After Rationalize the denominator we got 4.68.

Given that,

Square root 12+Square root 6/Square root 3+1

​We have to Rationalize the denominator.

If the denominator's radical is a square root, multiply by a square root that, when multiplied by the denominator, produces a perfect square beneath the radical.

The square root of a number is the element that, when multiplied by itself, produces the original number. Squares and square roots are examples of special exponents.

[tex]\sqrt{12}+\sqrt{6} /\sqrt{3+1}[/tex]

Square root of [tex]\sqrt{12} is 2\sqrt{3}[/tex]

[tex]2\sqrt{3}+\sqrt{6}/\sqrt{4}[/tex]

Square root of [tex]\sqrt{4} is 2[/tex]

[tex]2\sqrt{3}+\sqrt{6}/2[/tex]

Calculating the terms

3.46+2.44/2

3.46+1.22

4.68

Therefore, After Rationalize the denominator we got 4.68.

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The coordinates of the images of the vertices of the rectangle are B'(x, y) = (- 4, 2), C'(x, y) = (- 4, 7), D'(x, y) = (0, 7) and E'(x, y) = (0, 2).

Rectangles are defined by the location of its four vertices set on Cartesian plane, whose images must be found by using a transformation known as translation, whose formula is defined below:

P'(x, y) = P(x, y) + T(x, y)

Where:

If we know that B(x, y) = (3, 2), C(x, y) = (3, 7), D(x, y) = (7, 7), E(x, y) = (7, 2) and T(x, y) = (- 7, 0), then the images of the vertices are:

B'(x, y) = (3, 2) + (- 7, 0)

B'(x, y) = (- 4, 2)

C'(x, y) = (3, 7) + (- 7, 0)

C'(x, y) = (- 4, 7)

D'(x, y) = (7, 7) + (- 7, 0)

D'(x, y) = (0, 7)

E'(x, y) = (7, 2) + (- 7, 0)

E'(x, y) = (0, 2)

Now we proceed to present the resulting figure.

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A table of data for two different linear functions using the same values of x for both functions is shown below:

From the table, it can be seen that when x = -1, the function y = 2x + 7 has a value of 5 and the function y = -x + 4 has a value of 5.

Therefore, the graph of the two functions will intersect at (1, 5)