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nexus9112 [7]
3 years ago
15

Select the correct answer.

Mathematics
1 answer:
MrRissso [65]3 years ago
3 0

Answer:

C. 309 cm2

Step-by-step explanation:

A=2(1+sqr2)a^2

A=2(1+sqr2)8^2

≈309.01934

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(8 – 10i) – (-16 + 2i)
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Answer:

8-10i - -16+2i= 236

Step-by-step explanation:

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The staff at the arcola country club prepares tables for a wedding reception they are able to prepare 6 tables in 45 minutes how
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4 hours=240 minutes
240 minutes=5 1/3 45 min. intervals
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4 years ago
Help!! quickly!! will give brainliest [image attached]
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19.5

Step-by-step explanation:

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3 years ago
A line through the points $(2, -9)$ and $(j, 17)$ is parallel to the line $2x + 3y = 21$. What is the value of $j$?
lys-0071 [83]

Answer:

j=-37

Step-by-step explanation:

step 1

Find the slope of the given line

we have

2x+3y=21

Convert to slope intercept form

Isolate the variable y

subtract 2x both sides

3y=-2x+21

divide by 3 both sides

y=-\frac{2}{3}x+7

The slope is

m=-\frac{2}{3}

step 2

we have the points

(2,-9) and (j,17)

Find the slope

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

substitute

m=\frac{17+9}{j-2}

m=\frac{26}{j-2}

Remember that

If two lines are parallel then their slope are equal

therefore

\frac{26}{j-2}=-\frac{2}{3}

26(3)=-2(j-2)\\78=-2j+4\\2j=4-78\\2j=-74\\j=-37

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3 years ago
5/m-9 = 8/m+5<br><br> Solve the following proportions, while using cross multiplication.
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