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givi [52]
3 years ago
15

What is r-9r simplified. Show steps

Mathematics
1 answer:
frutty [35]3 years ago
5 0

Answer:

-8r

Step-by-step explanation:

r- 9r

since there is an r in each term  we can factor out an r

r (1-9)

r (-8)

-8r

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Henry takes out a $650 discounted loan with a simple interest rate of 12% for a period of 7 months. What is the effective intere
Andru [333]

The effective rate of interest will be 9.10 %.

<h3>What is compound interest?</h3>

Compound interest is applicable when there will be a change in principle amount after the given time period.

Let's say you have given 100 for two years with a 10% rate of interest annually than for the second-year principle amount will become 110 instant of 100.

Given for simple interest

Principle amount = $650

Rate of interest = 12%

Time period = 7 months.

Interest= PRT/100

Interest= 650× 12 × 7/100 = 546

So final amount = 650 + 546 =  $1196

By compound interest

1196 = 650[1 + R/100]^{7}

R = 9.10%

Hence the effective rate of interest will be 9.10%.

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6 0
2 years ago
Find the weight of the cast iron shape shown below at 0.26 pounds per cubic inch. (round to the nearest pound). The height of th
weqwewe [10]

Answer:

<u>640 pounds </u>

Step-by-step explanation:

The rest of the question is the attached figure

So, the total volume = V(cylinder ) + V(cone)

The volume of cylinder = π r² h

The volume of cone = π r² h/3

Both of the cylinder and the cone have the same diameter = 14 inches

So, the radius = 14/2 = 7 inches

The height of the cylinder is 13 inches and the height of the cone is 9 inches.

So, The volume of cylinder = π r² h = π * 7² * 13 = 2,001.2 in³

And The volume of cone = π r² h/3 = π * 7² * 9/3 = 461.8 in³

So, the total volume = 2,001.2 + 461.8 = 2,463 in³

So, the total weight = 0.26 pounds per cubic inch times the total volume

                                = 0.26 * 2463 = 640.38 pounds

                                = <u>640 pounds (to the nearest pound)</u>

6 0
3 years ago
I need help fast!!!!!
Vesna [10]
-48 is the answer to the question

mean = Summation of Data/Number of Data Added

mean = [(-54)+(-32)+(-70)+(-25)+(-65)+(-42)] / 6

mean = -288 / 6
mean = -48
7 0
3 years ago
Read 2 more answers
For which value of b can the expression x2 + bx + 18 be factored?
WINSTONCH [101]

An expression is defined as a set of numbers, variables, and mathematical operations. The value of b for which the expression x² + bx + 18 can be factored is 9.

<h3>What is an Expression?</h3>

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

The value of b for which the given expression x² + bx + 18 can be factored is 9. This will make the expression factored as (x+3) and (x+6).

Thus, the value of b for which the expression x² + bx + 18 can be factored is 9.

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6 0
2 years ago
How do i find the unit rate?
Assoli18 [71]
U can find the unit rate by looking where is the point so in that pic the unit rate I see is: 3/5
5 0
3 years ago
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