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svetoff [14.1K]
3 years ago
10

Someone anybody please help

Mathematics
1 answer:
babymother [125]3 years ago
3 0
This is a system of equations problem that can be solved using one of three methods: <span>graphing, substitution, or <span>elimination. I'll be using substitution.

In substitution:
1) S</span></span><span>olve one equation for either variable. I'll use the first equation because its easier to solve for one of the variables. I'll be solving for y because that will allow us to solve for the value of x faster.
</span>x+y=60
y=60-x

2) Substitute what you get into the other equation:
20x + 5y = 600
20x + 5(60-x) = 600

3) Solve your new equation in step 2 for the variable, x.
20x + 5(60-x) = 600
20x + 300-5x = 600
15x + 300 = 600
15x = 300 
x=20

There are D) 20 $20 bills in her drawer. 

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r-ruslan [8.4K]

Answer:

Gretchen has mostly more than Manuel.

Step-by-step explanation:

Plz mark as Brainliest!

5 0
4 years ago
I need help thank you
IRISSAK [1]

Answer:

1) k = 3

2) 3, 4, 5

3) k + (k + 2) + (k + 4) = 4k

4) 6, 8, 10

Step-by-step explanation:

Jared used the equation;

k + (k + 1) + (k + 2) = 4k

Let's find k.

3k + 3 = 4k

4k - 3k = 3

k = 3

Thus,the integers will be;

3, (3 + 1) and (3 + 2)

This is; 3, 4, 5

He is looking for consecutive even integers but yet got 3 and 5 which are odd numbers. However, he should have used the format;

k, (k + 2), (k + 4) as the 3 consecutive even integers.

Thus, rewriting the main equation gives;

k + k + 2 + k + 4 = 4k

3k + 6 = 4k

4k - 3k = 6

k = 6

Thus,the integers are;

6, (6 + 2), (6 + 4)

This is; 6, 8, 10

6 0
3 years ago
Marie ate 1/3 of a pie. Her sister, Rebecca, ate 1/5 of the pie. What fraction of the whole prediction Rebecca eat?​
Harlamova29_29 [7]
8/15ths, because 1/3=5/15 and 1/5=3/15 therefore 5/15+3/15=8/15
5 0
3 years ago
The equation for line m is y = - - x + 5. Which equation represents a line perpendicular to line m?
Natalka [10]

Answer:

-y-x+5=0

Step-by-step explanation:

because if a line is perpendicular then

eqn bx-ay+.k..=0

4 0
3 years ago
Y=4x+8<br> Y=5x+1<br><br> I cant figure out this math problem
Crank
If solving for x:
Because both equations are equal to Y, you can set both equations equal to each other:
5x+1=4x+8
Then it's a matter of simplification (subtract the 4x to the left side and subtract the 1 over to the right):
x=7
If solving for Y:
Plug x=7 into either equation and solve:
Y=4(7)+8
Y=36
4 0
3 years ago
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