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3 years ago

Can somebody please help me and explain a bit, it's for a test grade :(

Mathematics

1 answer:

bekas [8.4K]3 years ago

5 0

Answer:

Step-by-step explanation:

All you have to do is

85=5(x)

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A vat of milk has spilled on a tile floor. The milk flow can be expressed with the function r(t) = 4t, where t represents time i

Likurg_2 [28]

R(t) = 4t
A(r) = π(r^2)

a) A(t) = A[r(t)] = π[r(t)]^2 = π[4t]^2 = 16π(t^2)

b) t = 4,

A(4) = 16*3.14*(16)^2 = 12,861.44

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3 years ago

How many liters of water should be added to 18 liters of a 14% bleach solution so that the resulting solution contains only 10%

HACTEHA [7]

<h2>Answer:</h2>

18 liter = 14% Bleach

............ = 10% Bleach

......=

$\frac{18 \times 10}{14}$

$\frac{180}{14}$

$= 12.9\%$

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3 years ago

Read 2 more answers

Determine which of the lines, if any, are parallel. Explain.

amid [387]

Answer:

Line A and Line C are parallel

Step-by-step explanation:

<u>Slope Equation: </u> $m=\frac{y_{2} - y_{1}}{x_{2} - x_{1}}$

<u>Step 1: Find the slope of the first line</u>

Line a passes through (-1, -2) and (1, 0).

$m = \frac{(0- (-2))}{(1 - (-1))}$

$m=\frac{2}{2}$

$m=1$

<u>Step 2: Find the slope of the second line</u>

Line b passes through (4, 2) and (2, -2).

$m = \frac{(-2- 2)}{(2 - 4)}$

$m = \frac{-4}{-2}$

$m=2$

<u>Step 3: Find the slope of the third line.</u>

Line c passes through (0, 2) and (-1, 1).

$m=\frac{(1-2)}{(-1 - 0)}$

$m=\frac{-1}{-1}$

$m=1$

Answer: Line A and Line C are parallel

5 0

3 years ago

Write the linear equation for each graph.

nignag [31]

Slope = rise/run
3 down, 1 left: 3/1 = 3
Y = 3x + b
Plug in any point
1 = 3(1) + b, b = -2
Solution: y = 3x - 2

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3 years ago

If the homogeneity of variance assumption is violated in an independent groups t test, this means _________. the populations fro

Anit [1.1K]

Answer:

the populations from which the samples were drawn have different standard deviations

Step-by-step explanation:

Given that the assumption of homogeneity of variance is the same as the assumption of the independent samples t-test which asserted that all comparison groups possess the same variance

Therefore, if the homogeneity of variance assumption is violated in an independent groups t-test, this means "the populations from which the samples were drawn have different standard deviations."

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3 years ago