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3 years ago

PLEASE I NEED HELP

Mathematics

1 answer:

Afina-wow [57]3 years ago

8 0

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PLEASE HELP!!!!!!!!!!!!

Igoryamba

<h3>Answer: 21x+14 (choice A)</h3>

Explanation:

Use the distribution rule to multiply the outer 7 by each term inside

7 times 3x = 21x
7 times 2 = 14

We go from 7(3x+2) to 21x+14

3 0

3 years ago

Read 2 more answers

A housepainter mixed 5 gal of blue paint with every 9 gal of yellow paint in order to make a

NikAS [45]

I think any of these would work

10;18

15;28

20;35

8 0

3 years ago

Read 2 more answers

if 2/3 of the girls in class have brown eyes and 1/4 of the girls have blue eyes, what fraction of the girls in class have neith

Crank

2/3 + 1/4. You start by converting the fractions so that they have a common denominator.
8/12 + 3/12 = 11/12
11/12 of the girls have blue and brown eyes. That leaves 1/12 of the girls who have neither blue nor brown eyes.

4 0

3 years ago

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7x9=7x5+7x= <br> Please help i’m on a test

mariarad [96]

I can’t see the photo sorry

7 0

3 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