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1 year ago

3 times the sum of 7 and 8 is divided by 9

Mathematics

2 answers:

Dahasolnce [82]1 year ago

7 0

Answer:

Step-by-step explanation:

7+8=15

15 x 3 = 45

45/9=5

belka [17]1 year ago

3 0

Answer: 5

Step-by-step explanation: (7+8)3 / 9 =

15 x 3 / 9 = 45 / 9 = 5

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A city has a population of 310,000 people.Suppose that each year the population grows by 6.5% . What will the po

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Answer:

546,397 people

Step-by-step explanation:

We solve for the above question, using the formula for Exponential growth

The formula is given as

P(t) = Po (1 + r)^t

Po = Initial population = 310,000

r = Exponential growth rate = 6.5% = 0.065

t = Time in years = 9

P(t) = Population size after time t

Hence:

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P(t) = 546,396.82088 people

Approximately =546,397 people

The population will be 546,397 people after 9 years.

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1 year ago

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2 years ago

Read 2 more answers

In ΔXYZ, ∠Y=90° and ∠X=73°. ∠ZWY=80° and XW=80. Find the length of ZY to the nearest 100th.

lawyer [7]

Answer:

Solution given:

Y=90°

∠X=73°.

∠ZWY=80°

and XW=80.

ZY=?

We know that

In right angled triangle ∆ XYZ

Tan 73= $\frac{p}{h}$

3.27= $\frac{yz}{xy}$

3.27×[xy]=yz

xw+wy= $\frac{yz}{3.27}$

wy= $\frac{yz}{3.27}$ -80...........(1)

again

In right angled triangle WYZ

Tan 80= $\frac{yz}{wy}$

5.67×wy=yz

wy= $\frac{yz}{5.67}$

yz=5.67×wy............................................(2)

Equating equation 1&2

$\frac{yz}{5.67}$ = $\frac{yz}{3.27}$ -80

$\frac{yz}{3.27}$ - $\frac{yz}{5.67}$ =80

5.67yz-3.27yz=80*5.67*3.27

2.4yz =1483.272

yz= $\frac{1483.272}{2.4}$

yz=618.03

:.y=618.03unit.the length of ZY to the nearest 100th is 618.

8 0

2 years ago

3 times the sum of 7 and 8 is divided by 9​

3 times the sum of 7 and 8 is divided by 9