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antoniya [11.8K]
3 years ago
10

These prisms are similar. Find the surface

Mathematics
1 answer:
Bumek [7]3 years ago
5 0

Answer:

823.7 m^2

Step-by-step explanation:

The ratio of the side lengths is 6/5.

The ratio of the areas is the square of the ratio of the side lengths, 36/25.

572 m^2 * 36/25 = 823.7 m^2

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Evaluate the expression(-3.8)+0+y for the given values of y.
11111nata11111 [884]

Answer:

y = -3.3 then  -7.1

y = -7.1 then  -10.9

y = -2.6 then -6.4

y = 1 then -2.8

y = 4.2 then 0.4

Step-by-step explanation:

(-3.8)+0+y can be simplified to -3.8 + y. Evaluate each value for y by substituting it into the expression and solving.

y = -3.3 then -3.8 + -3.3 = -7.1

y = -7.1 then -3.8 + -7.1 = -10.9

y = -2.6 then -3.8 + -2.6 = -6.4

y = 1 then -3.8 + 1 = -2.8

y = 4.2 then -3.8 + 4.2 = 0.4

7 0
3 years ago
You earn a salary of R6 000 per month. Your employer indicates that he will give you a 20% increase. How much will your salary b
alexdok [17]

Answer:

R7,200

Step-by-step explanation:

We find the new salary by multiplying the old salary by 20% and adding this value to the old salary.

Thus, we have 6,000 + (6,000 * 0.20) = 6,000 + 1,200 = R7,200

7 0
2 years ago
The average of the first 3 weights was 14 pounds. The average of the next 7 was 4 pounds. What was the overall average of the we
miskamm [114]

Answer:

Average = 10

Step-by-step explanation:

Given

First\ Three = 14 --- Average

Next\ Seven= 4 --- Average

Required

Determine the overall average

Represent the sum of the first three with x.

So:

\frac{x}{3} = 14

Solve for x

x = 14 * 3

x = 42

Represent the sum of the next seven with y.

So:

\frac{y}{7} = 4

Solve for y

y = 4 * 7

y = 28

The overall average is calculated as thus:

Average = \frac{x + y}{7}

Average = \frac{42 + 28}{7}

Average = \frac{70}{7}

Average = 10

7 0
3 years ago
−8 (1 + x) + 7x PLEASE HELP
Tanya [424]

Answer:

-8-x or -x-8 or x=-8

Step-by-step explanation:

Distribute the -8 to the (1+x)

-8-8x+7x

then add the -8x+7x

-8-x or -x-8

and if you want to solve for x

x=-8

7 0
3 years ago
Your distance from the lighting varied directly with time it takes you to hear thunder. if you hear thruder 10 seconds after you
antiseptic1488 [7]
12 miles and add 4 more which is 16 miles i don’t know sry
8 0
3 years ago
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