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Bogdan [553]
3 years ago
14

This is worth 25 points.

Mathematics
1 answer:
hram777 [196]3 years ago
5 0
The answer will be no solution because if you put x-y=4 or y=x-4 on the graph and y=x you can see that those two lines will be parallel from each other and never intersect resulting in a no solution
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In two or more complete sentences write and solve an equation for the situation and explain how you will solve the equation. Fif
miv72 [106K]

We conclude that the starting average grade is 79.17%

<h3>How to write the equation and solve it?</h3>

There are 50 students, let's say that the grades are measured between 1% and 100%.

And the average grade of the 50 students is A.

We know that after it increased by 20%, the average of the grades is 95.

Then we just need to solve the percentage equation:

95 = A*(1 + 20%/100%) = A*(1.2)

95/1.2 = A = 79.17

We conclude that the starting average grade is 79.17%

If you want to learn more about percentages:

brainly.com/question/843074

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6 0
2 years ago
21-35a<br>Factor the following expression​
erica [24]

Answer:

7x(3-5a)

Step-by-step explanation:

21-35a =

to find a minimum common multiply you have to rationalize the number with the same numer, and this number must be a whole, this will help you to write the expression easier, if you notice that 21 and 35 are familiar of 7, then you can find a common factor, to multiply your expression

4 0
3 years ago
Part a : solve - vp + 40 &lt; 65 for v .
miskamm [114]

Answer:

\large \text{Part a:}\\\\for\ d-\dfrac{25}{d}}

\large\text{Part b:}\\\\\boxed{r=\dfrac{7}{3}w-5}

Step-by-step explanation:

\text{Part a}\\\\-vp+400,\ \text{then}\ \boxed{v>-\dfrac{25}{d}}\\\\\text{if}\ d

\text{Part b}\\\\7w-3r=15\qquad\text{subtract 7w from both sides}\\\\-3r=-7w+15\qquad\text{divide both sides by (-3)}\\\\\boxed{r=\dfrac{7}{3}w-5}

6 0
3 years ago
What is the answer ?
sergiy2304 [10]

Answer:

First box: 2

Second box: 30

Third box: 42

Step-by-step explanation:

5 sixes means 5 · 6, which equals 30. An unknown amount of sixes equals 12, which is 2 because 2 · 6 = 12.

30 + 12 = 42

7 · 6 = 42, so 42 is the answer.

I hope this helped! :)

4 0
3 years ago
Read 2 more answers
7. Which is the area of a rectangle TYOC with vertices T(-6, 6), Y(2, 10), 0(4, 6),
antiseptic1488 [7]

Answer:b

Step-by-step explanation:

5 0
3 years ago
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