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3 years ago

B is 30 more than a. B is 6 times as many as a. What is the value of a and b ?

Mathematics

2 answers:

Kruka [31]3 years ago

7 0

180 would be the correct answer. because you multiply 30x6=180:)!

12345 [234]3 years ago

4 0

Answer:

180 is the answer you multiple 6 times 30

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May I know this answer

kap26 [50]

I think it’s C but I may be wrong

3 0

3 years ago

If your starting salary is $50,000 and you receive a 4%increase at the end of every year, what is the total amount, indollars, y

Softa [21]

Answer

Total amount earned after 16 years = $93649

Explanation:

The principal, P = $50,000

Interest rate, r = 4% = 4/100

r = 0.04

The time, t = 16 years

Number of times intesrest is compounded per year, n = 1

Total amount is calculated below:

$\begin{gathered} A=P(1+r)^t \\ \\ A=50000(1+0.04)^{16} \\ \\ A=50000(1.04)^{16} \\ \\ A=\$93649 \end{gathered}$

Total amount earned after 16 years = $93649

4 0

1 year ago

Part 4. NO LINKS!! Find the area of the shaded area shown. SHOW WORK PLEASE !! #21

SIZIF [17.4K]

Area of square

32²
1024

Radius of each circle

32/4/2
8/2
4

Area of 16 circles

16πr²
16π(4)²
16π(16)
256π
803.8cm²

Area of shaded region

1024-803.8
220.2cm²

5 0

2 years ago

Read 2 more answers

What is the perimeter?

DanielleElmas [232]

Answer:

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7 0

3 years ago

If it takes 6 hours for a plane to travel 720km with a tail wind and 8 hours to make the return trip with a head wind. Find the

denis-greek [22]

The speed of wind and plane are 105 kmph and 15 kmph respectively.

<u>Solution:</u>

Given, it takes 6 hours for a plane to travel 720 km with a tail wind and 8 hours to make the return trip with a head wind.

We have to find the air speed of the plane and speed of the wind.

Now, let the speed wind be "a" and speed of aeroplane be "b"

And, we know that, distance = speed x time.

$\text { Now, at tail wind } \rightarrow 720=(a+b) \times 6 \rightarrow a+b=\frac{720}{6} \rightarrow a+b=120 \rightarrow(1)$

Now at head wind → $720=(a-b) \times 8 \rightarrow a-b=\frac{720}{8} \rightarrow a-b=90 \rightarrow(2)$

So, solve (1) and (2) by addition

2a = 210

a = 105

substitute a value in (1) ⇒ 105 + b = 120

⇒ b = 120 – 105 ⇒ b = 15.

Here, relative speed of plane during tail wind is 120 kmph and during head wind is 90 kmph.

Hence, speed of wind and plane are 105 kmph and 15 kmph respectively.

6 0

3 years ago