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vladimir1956 [14]
3 years ago
6

How do you find ratio

Mathematics
1 answer:
ser-zykov [4K]3 years ago
6 0
<span>Identify the known ratio and the unknown ratio.Set up the proportion.Cross-multiply and solve.Check answer by plugging result into unknown ratio. Look here for the formula: </span>http://prntscr.com/e0qtq3
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In a random sample of 300 people in a town, 193 were female. What is the sample portion of female
Inessa [10]

Answer: 0.643

Step-by-step explanation:

There are 300 people and 193 were female.

The sample portion that is female is therefore;

= 193/300

= 0.643

3 0
3 years ago
If x=3 ,then 5x - 9=6 conclusion:x=3 <br> true or false
saul85 [17]
(5 x3)-9=6 its true
5 0
3 years ago
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Given: ΔABC, AB ≅ BC<br> BE− median of ΔABC<br> m∠ABE = 40°30'<br> Find: m∠ABC, m∠FEC
Nikitich [7]
I think angle abc is 80° and angle fec is 90°

Explanation:

Since angle abe is 40° just double it to get abc

And fec is just a 90° angle

8 0
3 years ago
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If you invest $100,000 in an account earning 8% interest compounded annually, how long will it take until the account holds $300
Monica [59]

We have been given that you invest $100,000 in an account earning 8% interest compounded annually. We are asked to find the time it will take the amount to reach $300,000.

We will use compound interest formula to solve our given problem.

A=P(1+\frac{r}{n})^{nt}, where,

A = Final amount after t years,

P = Principal amount,

r = Annual interest rate in decimal form,

n = Number of times interest is compounded per year,

t = Time in years.  

8\%=\frac{8}{100}=0.08

300,000=100,000(1+\frac{0.08}{1})^{1\cdot t}

300,000=100,000(1.08)^{t}

\frac{300,000}{100,000}=\frac{100,000(1.08)^{t}}{100,000}

3=(1.08)^{t}

(1.08)^{t}=3

Let us take natural log on both sides of equation.

\text{ln}((1.08)^{t})=\text{ln}(3)

Using natural log property \text{ln}(a^b)=b\cdot \text{ln}(a), we will get:

t\cdot \text{ln}(1.08)=\text{ln}(3)

\frac{t\cdot \text{ln}(1.08)}{\text{ln}(1.08)}=\frac{\text{ln}(3)}{\text{ln}(1.08)}

t=\frac{1.0986122886681097}{0.0769610411361283}

t=14.274914586

Upon rounding to nearest tenth of year, we will get:

t\approx 14.3

Therefore, it will take approximately 14.3 years until the account holds $300,000.

7 0
3 years ago
Evaluate 3•r•(t—v) if r=2, t=6, and v=4
Oliga [24]

Answer:

12

Step-by-step explanation:

3*2*(6-4)

3*2*(2)

6*(2)

12

6 0
3 years ago
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