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Marrrta [24]
3 years ago
7

Find the value of the expression. c²b for b = 5 and c = 3

Mathematics
2 answers:
kicyunya [14]3 years ago
7 0

Answer:

45

Step-by-step explanation:

c^2*b

We know that c is 3, and b is 5, so we can substitute them in

3^2*5

Solve the exponent first

9*5

Multiply

45

SIZIF [17.4K]3 years ago
3 0

Answer:

45

Step-by-step explanation:

1. plug in the numbers (3)^2 x 5

2. Solve 3^2= 9

9x5= 45

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blagie [28]

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Step-by-step explanation:

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8 0
3 years ago
Elena plans to ride her bicycle 5 miles to a park and then ride several times
Aneli [31]

Option A

Elena need to ride around the  loop four or more times

<em><u>Solution:</u></em>

Given that Elena plans to ride her bicycle 5 miles to a park and then ride several times  around a loop in the park that is 3 miles long

Then she will ride the same way  home

She wants to ride a total of at least 22 miles

<em><u>Given inequality is:</u></em>

3t + 10 > 22

Where "t" is the number of times Elena rides around the loop

<em><u>Solve fot "t" in given inequality</u></em>

3t + 10 > 22

Subtract 10 both sides

3t + 10 - 10 > 22 - 10

3t > 12

Divide by 3 both sides

t > 4

The solution is all real numbers greater than or equal to 4

Which means 4 or more times

Therefore, Option A is correct.

4 0
3 years ago
A surveying instrument is 5 feet from the ground, 22 feet from the base of a building. The angle of elevation from the top of th
g100num [7]

Answer:

\frac{\left(22\cdot \sin \left(60\right)\right)}{\sin \left(30\right)} +5

43.1 ft

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Simplify the expression r^-3 s^5 t^2/r^2 st^-2
Hoochie [10]
R/s^5t^r2st-2/r^3
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5 0
3 years ago
Y=6x-11 -2x-3y=-7 solve each system of equation by substitution
Anit [1.1K]

Answer:

(2, 1 )

Step-by-step explanation:

Given the 2 equations

y = 6x - 11 → (1)

- 2x - 3y = - 7 → (2)

Substitute y = 6x - 11 into (2)

- 2x - 3(6x - 11) = - 7 ← distribute and simplify left side

- 2x - 18x + 33 = - 7

- 20x + 33 = - 7 ( subtract 33 from both sides )

- 20x = - 40 ( divide both sides by - 20 )

x = 2

Substitute x = 2 into (1) for corresponding value of y

y = 6(2) - 11 = 12 - 11 = 1

Solution is (2, 1 )

5 0
3 years ago
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