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4 years ago

I don’t know how to do this one I need help

Mathematics

1 answer:

vova2212 [387]4 years ago

5 0

Solve for w by simplifying both sides of the equation by isolating the variable then combining like terms w= -3

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7x + 4y = -3 -7x - 5y = 9 How do I solve using elimination

mel-nik [20]

Answer:

X=3, y=-6

Step-by-step explanation:

7x+4y=-3 equation 1

-7x-5y=9 equation 2

-y=6. Add above two equations

Y=-6

solve for x by inputting y value into either equation.

7x+4(-6)=-3

7x-24=-3

7x=21

x=3

check answer by inputting x and y values into either equation

-7x-5y=9

-7(3)-5(-6)=9

–21+30=9

9=9

5 0

3 years ago

Find x A. 4√6 B. 4√6/3 C. 16√6/3 D. 32√3/3

Cerrena [4.2K]

Answer:

Step-by-step explanation:

let hypotenuse of triangle with 60°=y

$\frac{8\sqrt{2}}{y} =sin ~60\\8 \sqrt{2}=y \times \frac{\sqrt{3}}{2} \\y=\frac{16 \sqrt{2}}{\sqrt{3}} =\frac{16 \sqrt{6}}{3}$

4 0

3 years ago

Please help me. i am having a bit of trouble.

bulgar [2K]

Answer:dont think this right i just need to do this

Step-by-step explanation:its 3

7 0

3 years ago

Read 2 more answers

Write 6^8 • 6^7 as a single power

taurus [48]

<h3>Write 6^8 • 6^7 as a single power:</h3>

$6^8 \times 6^7 = 6^{15}$

Solution:

Given that,

We have to write 6^8 • 6^7 as a single power

Given is:

$6^8 \times 6^7$

Use the following law of exponent

$a^m \times a^n = a^{m+n}$

When, the base is same, powers gets added

Therefore,

$6^8 \times 6^7 = 6^{8+7}\\\\6^8 \times 6^7 = 6^{15}$

Thus the given is written as a single power

3 0

3 years ago

HELP ME HAVING TROUBLE!!!

levacccp [35]

It's A because 6^4=6×6×6×6

3 0

4 years ago

Read 2 more answers