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Assoli18 [71]
3 years ago
6

Need help first to answer gets brainliest

Mathematics
1 answer:
NeX [460]3 years ago
4 0
It’s BBBBBB all the way
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Solve using elimination 5x+7y=9 <br> 2x-3y=-37
uranmaximum [27]

Answer:

x = -8

y = 7

Step-by-step explanation:

5x + 7y = 9

2x - 3y = -37

1.) First, multiply each side to match either y-values or x-values. (In this example, we'll use match x-values)

10x + 14y = 18 (multiplied by 2)

10x - 15y = -185 (multiplied by 5)

2.) Then, subtract the entirety of one equation to isolate the y-value.

10x + 14y = 18

-10x + 15y = 185

3.) Add and subtract values and divide to find y.

29y = 203

y = 7

4.) Plug-in y to solve for x into one equation, or repeat steps 1-3.

15x + 21y = 27

14x - 21y = -259

29x = -232

x = -8

4 0
2 years ago
THIS IS 100 POINTS SOMEBODY PLEASEEEEEEEEEEEEEE HELP MEEEEE
Nookie1986 [14]

Answer: Option #4: the 0.2 could be changed to 2.

Explanation:

The table is designed to make the concept of percentages more understandable. The table first allocates the total amount of 70 in terms of its "fifths," or 20% parts. Then it expresses these parts in the last row of the table, showing that 20% of 70 is 14 and all the five parts sum up to 70 again.

Now, Mikel is supposed to express 40% of the amount. So she writes (incorrectly): 0.2 * 14. This statement needs to be changed to 2 * 14 (two times 14 = 28), to correspond to 2 times 20%, or 40%  of 70.

This is reflected in the last (fourth) option "The 0.2 in the expression could be changed to 2."

Option #3 is incorrect because changing 14 to 70, will result in an incorrect number (2.8).

Options 1 and 2 are similarly incorrect (as can be easily verified)

3 0
3 years ago
Read 2 more answers
What are the values of the coefficients and constant term of 0 = 4 – 7x2 + x in standard form?
sweet [91]

Answer:

a = -7 and b = 1.  The constant term is 4

Step-by-step explanation:

In standard form, this equation is -7x^2 + x + 4 = 0

The coefficients are a = -7 and b = 1.  The constant term is 4.

7 0
3 years ago
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PLEASE HELP ME ASAP! WILL AWARD BRAINLIEST! IT'S ABOUT SIMULTANEOUS EQUATIONS. TYSM ;)
Hatshy [7]

Plug in your Y value into the bottom equation like so:

4x + 3x-3=11, combine like terms

7x-3=11 solve for x

7x= 14

x=2

Plug in x value into first equation

y = 3(2) -3

y= 6-3, y = 3

answer: (2,3)

7 0
2 years ago
How do estimate the difference of mixed numbers
avanturin [10]

Simplify then subtract.   

3 0
3 years ago
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