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3 years ago

Solve for x. 42-3x=30. Please and thank you! will mark brainliest!

2 answers:

4 0

X=4

Explanation: 42-3x=30
So you subtract 42 on each side leaving you with -3x=-12 and then you divide by -3 on each side meaning -12/-3 which leaves you with x=4

olganol [36]3 years ago

3 0

Answer:

x = 4

Step-by-step explanation:

Isolate the variable by diving each side by factors that don't contain the variable.

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How would I solve this step by step?

hoa [83]

Answer:

Step-by-step explanation:

you would add 60 + 90 then subtract it from 180

4 0

3 years ago

Read 2 more answers

PLs answer fast i need this questions answer

Mashutka [201]

Answer:

$x=6$

Step-by-step explanation:

Given equation:

$x-\left(2x-\dfrac{3x-4}{7}\right)=\dfrac{4x-27}{3}-3$

Expand the left side:

$\implies x-2x+\dfrac{3x-4}{7}=\dfrac{4x-27}{3}-3$

Let all terms on the left side have the same denominator of 7:

$\implies \dfrac{7x}{7}-\dfrac{14x}{7}+\dfrac{3x-4}{7}=\dfrac{4x-27}{3}-3$

Join the terms on the left side:

$\implies \dfrac{7x-14x+3x-4}{7}=\dfrac{4x-27}{3}-3$

$\implies \dfrac{-4x-4}{7}=\dfrac{4x-27}{3}-3$

Let all the terms on the right side have the same denominator of 3:

$\implies \dfrac{-4x-4}{7}=\dfrac{4x-27}{3}-\dfrac{9}{3}$

Join the terms on the right side:

$\implies \dfrac{-4x-4}{7}=\dfrac{4x-27-9}{3}$

$\implies \dfrac{-4x-4}{7}=\dfrac{4x-36}{3}$

Cross multiply:

$\implies 3(-4x-4)=7(4x-36)$

Expand:

$\implies -12x-12=28x-252$

Add 12x to both sides:

$\implies -12=40x-252$

Add 252 to both sides:

$\implies 240=40x$

Divide both sides by 40:

$\implies 6=x$

$\implies x=6$

6 0

1 year ago

I have quiz need this question! PLS I will mark brainiest

rewona [7]

We will need to shade the region above f(x) and the region below the function g(x).

<h3>How to transform the graph into the solution set?</h3>

We have:

f(x) = x² - 2

g(x) = -x² + 5

Both of these are already graphed, and we want to transform it into:

y > f(x)

y ≤ g(x)

The first inequality means that we need to graph f(x) with a dashed line, because f(x) is not part of the solution, and then we shade all the region above f(x).

For the other inequality, we use a solid line (because the points on the line are solutions) and then we shade the part below the curve.

Learn more about inequalities on:

brainly.com/question/18881247

#SPJ1

8 0

2 years ago

Which of the following equations is equivalent to bsin(A) = asin(B)?

anastassius [24]

Answer:

please mark me brainliesf if it is right

sin(A)/a = sin(B)/b

3 0

2 years ago

Jaydas house is located at (1,5). She can walk in a straight line to get to Christians house. A fast food restaurant is located

steposvetlana [31]

Answer:

C. (9,1)

Step-by-step explanation:

Let the coordinated of Jaydas House be:

A(x_1, y_1) = (1,5)

The coordinates of Christian's House be:

B( x_2, y_2)

Let the restaurant be

M(x_M, y_M) = (7,2)

The ratio is 3:1

m=3 and n=1

So by the formula of finding the point that divides lines into given ratios

$x_M = \frac{nx_1+mx_2}{m+n}\\7 = \frac{(1)(1)+(3)x_2}{3+1}\\7 = \frac{1+3x_2}{4}\\7*4 = 1 + 3x_2\\28-1=3x_2\\27=3x_2\\x_2 = \frac{27}{3}\\x_2 = 9\\y_M = \frac{ny_1+my_2}{m+n}\\2 = \frac{(1)(5)+(3)y_2}{3+1}\\2 = \frac{5+3y_2}{4}\\2*4 = 5 + 3y_2\\8=5+3y_2\\8-5=3y_2\\3=3y_2\\y_2 = \frac{3}{3}\\y_2 = 1$

Therefore the coordinates of Christian's house are (9,1)

Option C is correct ..

7 0

3 years ago