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3 years ago

-7 (8s + 9f) if s = -5 and f = -3

Mathematics

1 answer:

masya89 [10]3 years ago

3 0

Answer:

469

Step-by-step explanation:

Substitute -5 and -3 into the equation:

-7(8 (-5) + 9 (-3)

-7(-40 - 27)

-7(-67)

+469

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A cylinder has a volume of 105 cubic centimeter what is the volume of a cone with the same base and height?

pychu [463]

Answer:

Step-by-step explanation:

The formula of a volume of a cylinder:

$V_1=\pi r^2H$

r - radius

H - height

The formula of a volume of a cone:

$V_2=\dfrac{1}{3}\pi r^2H$

If the cylinder and the cone have the same base (radius) and the same height, then the volume of the cone is three times smaller than the volume of the cylinder.

$V_2=\dfrac{1}{3}\underbrace{\pi r^2H}_{V_1}$

Therefore:

$V_2=\dfrac{1}{3}V_1\toV_2=\dfrac{1}{3}\cdot105\ cm^3=35\ cm^3$

5 0

3 years ago

Gary had a 40% discount for new tires. The sale price of a tire was $96.25. What was the original price of the tire? Round to th

EastWind [94]

If the price after the discount is subtracted is $96.25 then this is what you do

u times 0.40 x 96.25 which is 38.5 so since you are wanting to know what the price was before the discount you would add 38.5 to 96.25 and when you do that your answer is 134.75

but if you are just trying to get the discount from 96.25 you subtract 38.5 from 96.25

8 0

3 years ago

Isaiah rides the bus home and it cost $0.50. Isaiah has 3 quartiers, 5 dimes, and 2 nickles. What is the probability that Isaiah

vovikov84 [41]

Answer:

30%

Step-by-step explanation:

5+2=7+3=10

3/10=30%

2 nickels

5 dimes

3 quarters

3 0

2 years ago

BRAINLIEST<br> find the value of a^n b^n if n=3,a=100,and b=1/4

Bumek [7]

Answer:

= (100)^3(1/4)^3

= 15,625 i think im not that good at math but i passed

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

2 + 3 × 16 − 2 × 21 − 3 = <br> 5<br> 14<br> 35<br> 40

Ganezh [65]

Answer: 5

Step-by-step explanation:

Since, According to the BODMAS, when we solve an expression,

We follow the following sequence,

1. Bracket/ parenthesis

2. Of

3. Division

4.Multiplication

5. Addition

6. Subtraction

Here, the given expression is,

$2 + 3\times 16 - 2\times 21 - 3$

Thus, solving the given expression by following the BODMAS,

We get,

Step 1. $2 + 48 - 42 - 3$

Step 2. $50 - 42 - 3$

Step 3. $8-3$

Step 4. 5

7 0

3 years ago