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3 years ago

9

Consider the following equation.

1 answer:

coldgirl [10]3 years ago

7 0

Answer:

( 19/3, -1)

Step-by-step explanation:

3x + 4y = 15

3x + 4(-1) = 15

3x -4 = 15

3x= 19

x= 19/3

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Can you help me solve <br> -3(y-4)=18

VikaD [51]

First you have to distribute. -3y +12=18. -3y=6. y= -2.

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3 years ago

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If i have 20 cookies and i take 10 away, how much do i have left

pentagon [3]

Answer:

10

Step-by-step explanation:

20 - 10 = 10

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4 years ago

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1. Solve exponential equations: ax=b, where a>0, a≠1, b>0

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3 years ago

Consider this right triangle with given measures.

OlgaM077 [116]

Answer:

$\sqrt{39}$

Step-by-step explanation:

I think the answer choices were supposed to be:

$\sqrt{3} , \sqrt{6} , \sqrt{39} , \sqrt{89}$

Pythagorean Theorem: a²+b²=c²

5²+b²=8²

25+b²=64

<em>Subtract 25 from both sides</em>

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Our answer is $\sqrt{39}$

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4 years ago

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Find the measure of angle B, note that angle B is acute

Nesterboy [21]

Answer:

B= 44.9506°

Step-by-step explanation:

WE apply sine angle formula

$\frac{a}{sin(A)} =\frac{b}{sin(B)}=\frac{c}{sin(C)}$

Given angle C = 51, c= 11 and b = 10

$\frac{b}{sin(B)}=\frac{c}{sin(C)}$

Plug in the values

$\frac{10}{sin(B)}=\frac{11}{sin(51)}$

Cross multiply it

10 * sin(51) = 11* sin(B)

7.771459615 = 11 sin(B)

Now divide by 11 on both sides

0.706496328 = sin(B)

Now $B = sin^{-1} (0.706496328)$

B= 44.9506°

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3 years ago