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Nookie1986 [14]

2 years ago

6

Please help me quick

1 answer:

evablogger [386]2 years ago

6 0

Answer:

c

Step-by-step explanation:

can i get brainlist because brainly deleted all my answers for no reason

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What is the y-coordinate of the solution for the system of equations? x−y=−11 y+7=−2x

ICE Princess25 [194]

Answer:

$y= 5$

Step-by-step explanation:

Given the system of equations:

$x-y=-11$

$y+7=-2x$

In order to find the y coordinate of the solution we must first find the solution to this system of equations. We first start by solving one of the given equations and then substitute the answer of that into the second equation and further solve to get the final answers.

$x=y=-11$

$y+7=-2x$

$y+7=-2x$

$+ -7$

$y = -2x - 7$

$x - y = -11$

$y = -2x-7$

$x-(-2x-7)=-11$

$x--2x=x+2x=3x$

$3x+7=-11$

$-7$

$-11+-7=-18$

$3x=-18$

$\div3$

$-18\div3=-6$

$x=-6$

$y=-2x-7$

$y=(-2)(-6)-7$

$-2\times-6=12-7=5$

$y=5$

Hope this helps.

7 0

2 years ago

X^lg(x)=100^x find x

Wittaler [7]

$x^lg(x)=100^x$ <span>
</span>

$X^lg(x)=100^x:x$ $|Solve \ for \ x|$

<span> $|Use \ logarithms \ of \ both \ sides \ of \ the \ base \ 10|

$ </span>

<span>
</span>

<span> $lg (x ^ lg (x)) = lg (100x)

$ </span>

<span>
</span>

<span> $lg ^ 2 (x) = 2 + lgx$ </span>

<span>
</span>

$lg 2 ^ x-lg x -2 = 0$

$lg x = 2 x = 100$

$lg x = -1 x = \dfrac{1}{10} = 0.1$

3 0

3 years ago

Volume of cylinder diameter 10 inches height of 20 inches

stiks02 [169]

$\sf{Volume~of~a~cylinder=\pi r^2h}\\\\V = \pi (\frac{10}{2})^2(20)\\\\V = 5^2 \pi (20)\\\\V = 25 \times 20 \pi\\\\\boxed{\bf{V = 500 \pi\approx1570.8}}$

4 0

3 years ago

Simplify sqrt 3× sqrt 27

sleet_krkn [62]

√3√27

=√(3*27)

=√81

=9

As 9*9=81.

----------------------

RULES:

√a√b=√ab

As (√a√b)²=((√a)²(√b)²)=√a√a√b√b=ab

When:

(√a√b)²=ab

√a√b=√ab

4 0

3 years ago

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The statement below describes a situation in which opposite quantities combine to make zero:

77julia77 [94]

The answer is false. if the quantities combine to make zero

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3 years ago

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