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Misha Larkins [42]
3 years ago
13

HELP!!!

Mathematics
2 answers:
Jobisdone [24]3 years ago
8 0

Answer:

16 is the number of quarters and 14 is the number of dimes

Step-by-step explanation:

we know that

1\ dime=\$0.10

1\ quarter=\$0.25

Let

x-----> the number of dimes

y------> the number of quarters

we know that

0.10x+0.25y=5.40 -----> equation A

x+y=30 ----Isolate the variable y

y=30-x -----> equation B

Substitute equation B in equation A

0.10x+0.25(30-x)=5.40      

0.10x+7.5-0.25x=5.40

0.25x-0.10x=7.5-5.40

0.15x=2.1

x=14\ dimes

Find the value of y

y=30-x

y=30-14=16\ quarters

therefore

16 is the number of quarters and 14 is the number of dimes

Colt1911 [192]3 years ago
6 0

Answer:answer in image

Step-by-step explanation:

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SVETLANKA909090 [29]

Answer:

c=b-x/d hope it helps..............

8 0
2 years ago
Which angles are vertical angles in the figure shown? Select two answers.
sukhopar [10]

Answer:

B and C

Step-by-step explanation:

Vertical angles are formed when you make lines make an  x shape (or a turned x shape).  The vertical angles are, on a normally positioned x the top and bottom angle, as well as the left and right angle.  so every x has 2 vertcial angles unless the x is further split up.

So the part with angles 1. 2. 3 and 4 the top angle is 2, the bottom is 3, the left angle is 1 and the right angle is 4.  This means the vertical angle pairs are 1 and 4 as well as 2 and 3.

So in total there are 2 x shapes, so 4 pairs of vertical angles.  Here are all the vertical angles.

1 and 4

2 and 3

5 and 8

6 and 7

So from your choices you have 2 and 3 as choice B and 5 and 8 as choice C.

8 0
3 years ago
Can someone help me? thanks!
masha68 [24]
So you know that 1 cubic foot is equal to 80 pounds. So, the first point would be (1,80). 
You can find the other points by multiply 80 by a number, and when I did that, I got (2,160) and (3,240) too.

I hope this helps :)
6 0
3 years ago
Factor the following polynomial completely.<br> -x^2y^2 + x^4 + 9y^2 - 9x^2
castortr0y [4]
See attached picture for answer:

3 0
3 years ago
What is the slope of the line through(-5,-10) and (-1,5)
Akimi4 [234]
<span> Put the values of above points in the equation of straight </span>line<span> point-</span>slope<span> form m=(y2-y1)/(x2-x1) m=(-</span>5-(-10))/(-1-5) m=(-5+10)/(-6) m=5/-6 m=-5<span>/6. </span>Slope of the line<span> = m = -</span>5<span>/6 so the answer is 5/6</span>
7 0
3 years ago
Read 2 more answers
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