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3 years ago

7

X-1) x-x-2x+8 Long division

1 answer:

Nastasia [14]3 years ago

4 0

Answer:

Ummm

Step-by-step explanation:

Im confused

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Solve for k, the constant of variation, in a direction variation problem where y = 240 and x = 30.

Minchanka [31]

$\bf \qquad \qquad \textit{direct proportional variation}
\\\\
\textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby 
\begin{array}{llll}
k=constant\ of\\
\qquad variation
\end{array}\\\\
-------------------------------\\\\
\textit{we also know that }
\begin{cases}
y=240\\
x=30
\end{cases}\implies 240=k30
\\\\\\
\cfrac{240}{30}=k\implies 8=k$

4 0

3 years ago

The line L passes through the points (5, -5) and (1, 2).<br> Find the gradient of line L.

Free_Kalibri [48]

gradient of L = -7/4

Explanation:

$\sf gradient = \dfrac{y_2-y_1}{x_2-x_1}$

<u>Insert the following values.</u>

$\rightarrow \sf \dfrac{2-(-5)}{1-5}$

$\rightarrow \sf \dfrac{7}{-4}$

$\rightarrow \sf -\dfrac{7}{4}$

7 0

2 years ago

Read 2 more answers

Which graph represents the inequality -2x+7y<112

algol13

The answer to the question is 25

6 0

3 years ago

The sum of two numbers is 39 and the difference is 3. What are the numbers?

frosja888 [35]

Answer: 21 & 18

Step-by-step explanation:

Sum of two numbers is 39

Difference is 3

Let the numbers be x & y

X+y=39........equation 1

X-y=3...........equation 2

X=3+y............equation 3

Substitute equation 3 into equation 1

(3+y)+y=39

3+y+y=39

3+2y=39

2y=39-3

2y=36

Y=36/2

Y=18

Substitute for y in equation 2

X-y=3

X-18=3

X=3+18

X=21

The two numbers are 21 & 18

8 0

4 years ago

Describe which of the two points lies on the graph of the line<br> -4x+y=-11<br> A.3,1<br> B.1,3

Olin [163]

-4x + y = -11

-4(3) + (1) = -11

-12 + 1 = -11

-11 = -11 True

A) 3,1
hope this helps

4 0

4 years ago