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2 years ago

What is the ratio for the surface areas of the rectangular prisms shown below,

Mathematics

1 answer:

lawyer [7]2 years ago

5 0

Calculating surface area
Big Prism-
7*14*2=196
7*21*2=294
14*21*2=588
196+294+588=1078

Small prism
3*6*2=36
3*9*2=54
6*9*2=108
36+54+108=198

1078:198
Simplify(divide by common factors)
(Divide2)
539:99
(Divide 11)
49:9

C is your answer

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PLEASE HELP ASAP THANKS IN ADVANCE

chubhunter [2.5K]

Answer:

the answer to the question is "C"

7 0

3 years ago

Solve the right triangle, ΔABC, for all the missing side and angles to the nearest tenth given sides a = 10.6 and b = 19.2.

Aliun [14]

Answer:

Part 1) $c=21.9\ units$

Part 2) $B=61.1\°$

Part 3) $A=28.9\°$

Part 4) $C=90\°$

Step-by-step explanation:

step 1

Find the length side c

Applying the Pythagoras Theorem

$c^{2}=a^{2}+b^{2}$

substitute the given values

$c^{2}=10.6^{2}+19.2^{2}$

$c^{2}=481$

$c=21.9\ units$

step 2

Fin the measure of angle B

we know that

In the right triangle

$tan(B)=b/a$

substitute the given values

$tan(B)=19.2/10.6$

$B=arctan(19.2/10.6)=61.1\°$

step 3

Find the measure of angle A

we know that

The measure of interior angles in a triangle must be equal to 180 degrees

∠A+∠B+∠C=180°

Remember that in a right triangle the measure of angle C is 90 degrees

we have

$B=61.1\°$

$C=90\°$

substitute

$A+61.1\°+90\°=180\°$

$A=28.9\°$

4 0

3 years ago

Evaluate the function.<br> f(x) = -x2 + 5x + 15<br> Find f(9)

Keith_Richards [23]

Answer:

f(9) = 42

Step-by-step explanation:

f(9) = (-9)*2 + 5*9 +15

= -18 + 45 + 15

= 42

5 0

3 years ago

Read 2 more answers

James tosses a coin 50 times. It lands on heads 23 times and on tails 27 times.

valentinak56 [21]

Answer:A

Step-by-step explanation:

23/50= 0.46 *100= 46%

4 0

3 years ago

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What is the area of a circle if the radius is 13

Kisachek [45]

A = pi * r^2.....r = radius and pi = 3.14

A = (3.14)(13^2)
A = 3.14(169)
A = 530.66

7 0

3 years ago