3 years ago

Please help asap !!!!

Mathematics

1 answer:

USPshnik [31]3 years ago

7 0

Your answer is C,105

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What is the value of 7 to the 3rd power

madam [21]

Seven to the third power is
(7^3)
7 * 7 * 7
this is
49 * 7
which is
343

Hope this helps :)

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3 years ago

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Which value for x makes the sentence true?

vazorg [7]

3x - 9 = 12

3x = 12 + 9

3x = 21

x = 21 / 3

x = 7

d- 7

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4 years ago

What is 2x + 3y = 13<br> x = 2 + 3y

IgorC [24]

Answer:

Step-by-step explanation:

Given that

2x+3y=13. Equation 1

x=2+3y. Equation 2

Using substitution method

Substitute x in equation 2 to equation 1

2x+3y=13

2(2+3y)+3y=13

4+6y+3y=13

4+9y=13

9y=13-4

9y=9

y=9/9

y=1.

To get x, substitute y=1 into equation 2

x=2+3y

x=2+3(1)

x=2+3

x=5

Then, x=5 and y=1 is the solution to the simultaneous equation

4 0

3 years ago

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What is the value of y when x=-7

Morgarella [4.7K]

Its dont know .............

6 0

3 years ago

Please answer for a brainliest

HACTEHA [7]

Answer:

$x = 5$

$y = - 5$

Step-by-step explanation:

Look at the second equation.

Add 6y to both sides:

$- 6x = 6y$

Hence,

$y = - x$

Substitute this into first equation:

$- 4x - x = - 25$

$- 5x = - 25$

$x = 5$

Since y = -x,

$y = - 5$

8 0

3 years ago