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Veronika [31]
4 years ago
7

Does 1/8 and 3/20 form a proportion

Mathematics
1 answer:
erica [24]4 years ago
5 0
1/8
3* 1 / 8 * 3
3/24

1/8 = 3/24

3/24 ≠ 3/20

Since 3/24 ≠ 3/20, 1/8 and 3/20 do not form a proportion.
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5 A classroom has 42 desks. Each row has 7 seats. Write an equation to find the number of rows in the classroom. Solve the equat
aliya0001 [1]

Answer:

42 / 7 = 6

Step-by-step explanation:

There are 6 rows in the class room.

4 0
3 years ago
Read 2 more answers
The average weight of a 12 year old boy in the US is 45 kg. If there are 2.2046 pounds in a kg, what is the average weight in po
Gennadij [26K]

Answer:

X=99

Step-by-step explanation:

1 KG =2.2046 pound

45 KG = x

X=45* 2.2046=99.207

8 0
3 years ago
Find the value of x in the isosceles triangle shown below.<br> 2<br> 2<br> 12<br> 10
Rudik [331]

Answer: x=13

Step-by-step explanation:

4 0
3 years ago
How long will it take for an investment to triple, if interest is compounded continuously at 8%?
maw [93]

Answer:

<em>It will take 14 years before the investment triples</em>

Step-by-step explanation:

<u>Continuous Compounding</u>

Is the mathematical limit that compound interest can reach if it was calculated and reinvested into an account's balance over a theoretically infinite number of periods.

The formula for continuous compounding is derived from the formula for the future value of a compound interest investment:

FV = PV\cdot e^{i.t}

Where:

FV = Future value of the investment

PV = Present value of the investment

i     = Interest rate

t     = Time

It's required to find the time for an investment to triple, that is, FV = 3 PV, knowing the interest rate is i=8%=0.08.

Substituting the known values:

3PV = PV\cdot e^{i.t}

Dividing by PV:

3 = e^{i.t}

Taking logarithms:

\ln 3=i.t

Solving for t:

\displaystyle t=\frac{\ln 3}{i}

\displaystyle t=\frac{\ln 3}{0.08}

t = 13.7 years

Rounding up:

It will take 14 years before the investment triples

6 0
3 years ago
The difference between seven times a number and 9 is equal to three times the sum of the number and 2. Find the number
murzikaleks [220]

Answer:

Number:3.75

Equation:7 x-9=3(x+2)

Step-by-step explanation:

Let the number be x.

According to the question,

7 x-9=3(x+2)

7 x-9= 3 x+ 6

7 x- 3 x= 9+6

4 x= 15

x=15/4

x=3.75

If you verify the answer you will get,

11.25=11.25

Thank you!

8 0
3 years ago
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