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Trava [24]
3 years ago
13

I have no idea how to do this. Its substitution.

Mathematics
1 answer:
barxatty [35]3 years ago
7 0
Since y = x+5, we can substitute y for x+5, making the new equation
3x + x+5 =25. Now, you can solve traditionally. 4x = 20, x = 5, y = 10
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X -5x -14=0 quadratic formula
Oksanka [162]
No its a negitive number one x minus five x's equal -14
8 0
2 years ago
HELPPPPP IM GIVING 50 POINTS FOR THIS !
azamat

4 cups = 1 quart

16 cups = 4 quarts

thx brainliest plz?

8 0
3 years ago
Read 2 more answers
Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4 by substituting x = 1 and x = 2. 6x + 11 3(x + 7) 2(3x + 16) 3x
sveta [45]

2(3x+16)

Step-by-step explanation:

Identify the expression equivalent to 4(x + x + 7) − 2x + 8 − 4

4(x + x + 7) − 2x + 8 − 4

When x=1 , the expression becomes 4(1+1+7)-2(1)+8-4=38

When x=2 , the expression becomes 4(2+2+7)-2(1)+8-4=44

Plug in x=1  and check with each expression

6x + 11 =6(1) +11= 16

3(x + 7) = 3(1+7)= 3(8)= 24

2(3x + 16) = 2(3(1)+16)= 38 , we got same answer when x=1, now check with x=2

2(3x + 16) = 2(3(2)+16)= 44

3x + 16= 3+16= 19

5 0
3 years ago
Pls help I have a test today in math :( no 1 would help me pls try to help and its in 12:20 so I have a lot of time but pls help
DanielleElmas [232]

Answer:

C. he did not multiply the numerator by 2

Step-by-step explanation:

To find an equivlent fraction, you must multiply the numerator and denominator by the same thing.

3 0
2 years ago
Read 2 more answers
Find y.<br> Round to the nearest tenth:<br> у<br> 270<br> 350 ft<br> y = [? ]ft
Hunter-Best [27]

Answer:

y=620 lemme know if this helped by pressing thanks :)

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
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