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3 years ago

Divide 33 photos into two groups so the ratio is 4 to 7

1 answer:

4 0

33 photos in a 4x to 7x ratio

4x + 7x = 33
11x = 33
x = 3

33 photos can be put in a 4(3) to 7(3) ratio

which is a 12 to 21 ratio

so 12 photos on one side, and 21 on the other side to get the ratio of 4 to 7

Note:
<span>a(b) = ab = a x b = a times bv</span>

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What is the direct linear variation equation for the relationship?

defon

$\bf \begin{array}{cccccclllll}
\textit{something}&&\textit{varies directly to}&&\textit{something else}\\ \quad \\
\textit{something}&=&{{ \textit{some value}}}&\cdot &\textit{something else}\\ \quad \\
y&=&{{ K}}&\cdot&x
\\ \\
&& y={{ K }}x
\end{array}
\\ \quad \\

\begin{cases}
y=4\\
x=12
\end{cases}\implies y=Kx\implies 4=K\cdot 12$

solve for "K", to see what "K" is, or the "constant of variation",
once you found K, plug it back in y=Kx, and that's the equation

3 0

3 years ago

Select the coordinates of two points on the line y = 8.

shusha [124]

Answer:

D: (0, 8) and (8, 8)

Step-by-step explanation:

Line y = 8. So doesn't matter what x values are, y is always equal 8

Answer

D: (0, 8) and (8, 8)

8 0

3 years ago

Consider two bases B = {b1, b2, b3} and C = {c1, c2, c3} for a vector space V such that

Helen [10]

I’m a failure if you can just say “yes you are” in the comments

3 0

3 years ago

HELP PLEASE :) * giving brainliest*

Inessa05 [86]

Answer:

(2,16)

Step-by-step explanation:

y=-x+18

y=8x

8x=-x+18

8x+x=9x

-x+x=0

9x=18

9x/9=x

18/9=2

x=2

y=8(2)

y=16

5 0

3 years ago

Read 2 more answers

Write the equation on the line passing through the two points (-2,11) and (5,-3)

nalin [4]

Answer:

y = - 2x + 7

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Calculate m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = (- 2, 11) and (x₂, y₂ ) = (5, - 3)

m = $\frac{-3-11}{5+2}$ = $\frac{-14}{7}$ = - 2, thus

y = - 2x + c ← is the partial equation

To find c substitute either of the 2 points into the partial equation

Using (- 2, 11), then

11 = 4 + c ⇒ c = 11 - 4 = 7

y = - 2x + 7 ← equation of line

3 0

3 years ago