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3 years ago

7. Solve the proportion w/36 = 5/18 . (1 point)

Mathematics

1 answer:

musickatia [10]3 years ago

6 0

Answer:

B, 10

Step-by-step explanation:

W/36=5/18

W/36=5/18 cress cross

18w=5x36

18w=180

18w/18=180/18

W=10

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A^2+10a+24 does anyone know how to do it

Komok [63]

Answer:

(a + 4)(a + 6)

Step-by-step explanation:

f(a) = a² + 10a + 24

I think you are asking us to factor the quadratic.

1. Multiply the leading coefficient and the constant

1 × 24 = 24

2. Find two numbers that multiply to give 24 and add to give 10.

Possible pairs are 1, 24; 2, 12; 3, 8; 4, 6

Start with the numbers near the end of the list.

By trial and error, you will find that 4 and 6 work:

4 × 6 = 24 and 4 + 6 = 10

3. Rewrite 10a as 4a + 6a

a² +4a + 6a +24

4. Factor by grouping the first two and the last two terms

a(a + 4) + 6(a + 4)

5. Distribute the a + 4

(a + 4)(a + 6)

a² + 10a + 24 = (a + 4)(a + 6)

8 0

4 years ago

The projected T. rex is about

dolphi86 [110]

Answer: $scale\ factor=230$

Step-by-step explanation:

You need to analize all the information given in the exercise.

You know that the actual height of the T-rex on the projector lens is the following:

$actual\ height=2\ cm$

The height of the projected T-rex is:

$projected\ height=4.6\ m$

Make the conversion from meters to centimeters:

$projected\ heigth=(4.6\ m)(\frac{100\ cm}{1\ m})\\\\projected\ heigth= 460\ cm$

Therefore, the scale factor will be:

$scale\ factor=\frac{projected\ heigth}{actual\ heigth}$

Finally, you must substitute values into the equation and then you must evaluate in order to find the scale factor of the projection. You get that this is:

$scale\ factor=\frac{460\ cm}{2\ cm}\\\\scale\ factor=230$

7 0

3 years ago

A game room has a floor that is 125 feet by 30 feet. A scale drawing of the floor on grid paper uses a scale of 3 units:5 feet.

crimeas [40]

It would be 75 units in length and 18 units in width.

7 0

3 years ago

A triangle with vertices at A(20, –30), B(10, –15), and C(5, –20) has been dilated with a center of dilation at the origin. The

Kobotan [32]

Answer:

One-fifth

Step-by-step explanation:

step 1

Find the distance between the origin and the point B

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have

O (0,0) and B(10, –15)

substitute

$d=\sqrt{(-15-0)^{2}+(10-0)^{2}}$

$d=\sqrt{325}\ units$

step 2

Find the distance between the origin and the point B'

the formula to calculate the distance between two points is equal to

$d=\sqrt{(y2-y1)^{2}+(x2-x1)^{2}}$

we have

O (0,0) and B'(2,-3)

substitute

$d=\sqrt{(-3-0)^{2}+(2-0)^{2}}$

$d=\sqrt{13}\ units$

step 3

Find the scale factor of the dilation

The scale factor is equal to divide the length of segment OB' by the length of segment OB

$\frac{\sqrt{13}}{\sqrt{325}}=\frac{1}{5}$

One-fifth

4 0

3 years ago

Read 2 more answers

Help me please i appreciate it

aleksley [76]

Answer:

17.5

plsss mark brainliestt

Step-by-step explanation:

10÷4=2.5

7×2.5=17.5

7 0

3 years ago

Read 2 more answers