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4 years ago

14

How would you solve -7x-4y=16

1 answer:

Anni [7]4 years ago

8 0

So one easy way is to make the equation equal to only one place holder so
-7x-4y=16
add 7x to both sdies
-4y=16+7x
multiply both sides by -1
4y=-16-7x
divide both sides by 4
y=-4-7/4x
subsitute values for x and get values for y
exg
if x=0 then y=-4
if x=1 then y=-5 3/7
etc

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Jake leaned a 12-foot ladder against his house. If the Angle formed by the ladder and the ground is 68, how far from the base of

zhuklara [117]

Answer:

$4.50\ ft$

Step-by-step explanation:

see the attached figure to better understand the problem

In the right triangle ABC

$cos(A)=\frac{AC}{AB}$ -----> the cosine is the adjacent side to angle A divided by the hypotenuse

substitute the values and solve for x

$cos(68\°)=\frac{x}{12}$

$x=12*cos(68\°)=4.50\ ft$

4 0

3 years ago

Need help thanks!!!!!!

kherson [118]

Answer:

<h2>1.5</h2>

Step-by-step explanation:

$-----------------------------$

$Here's$ $how$ $we$ $solve$ $the$ equation

$-1.2\left(3-x\right)$ = $-1.8$

$-1.2\left(3-1.5\right)$ = $-1.8$

$-3.6+1.2\cdot1.5$ = $-1.8$

$1.2\cdot1.5$ = $-1.8$

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<em>Hope this helps! <3</em>

5 0

3 years ago

Please help me out !!

Dmitrij [34]

<h3>Solution:</h3>

$\huge \pink {\tt {{128}^{ \frac{3}{7} } = \sqrt[7]{ {128}^{3} } = {2}^{3} }}$

$\huge \pink {\tt {= 8}}$

<h2>Answer:</h2>

$\huge \purple {\tt {8 \: is \: the \: answer}}$

8 0

3 years ago

Does someone know how to do this

Sveta_85 [38]

Answer:

us

Step-by-step explanation:

(B)

b
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b
b
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3 years ago

What is the probability of drawing a 9 of heart or an ace from a standard deck of cards? A. 7/52 B. 5/52 C. 5/26 D. 8/13 What is

Strike441 [17]

A for the first because there are 4 aces and 1 nine of hearts. that makes it 5 cards of the 52 in a deck
d for the second because there are two cards: the queen of heart and and ace of diamond out of the 52

hope this helped :)

5 0

3 years ago