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maks197457 [2]
4 years ago
9

How do you represent real world problems involving ratios and rates with tables and graphs

Mathematics
1 answer:
kolezko [41]4 years ago
4 0
By using a table chart
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A's salary is 25% higher than B's. By how many percents is B's salary less than A's?
alexandr1967 [171]

ANSWER

20 %

EXPLANATION

Let's say B's salary is 100. Given that A's salary is 25% higher than B's salary, then A's salary would be,

A=100+100\cdot25\text{ \%}=100+100\cdot\frac{25}{100}=100+25=125

To find how many percents is B's salary less than A's, we have to divide the portion of B's salary that is higher than A's, which is 25, by A's salary. And then multiply by 100% to obtain it as a percentage,

\frac{25}{125}\times100=\frac{1}{5}\times100=20\text{ \%}

Therefore, B's salary is 20% less than A's.

3 0
2 years ago
A taxi charges a flat fee of $4.00 plus $3.25 per mile. How much will it cost to travel 8.3 miles? Round your answer to the near
NikAS [45]

Answer:

$30.98

Step-by-step explanation:

Make an expression

It costs 3.25 per mile(x), and there is a cost of 4 no matter how many miles are traveled.

3.25x+4

To find how much 8.3 miles will cost, substitute 8.3 in for x

3.25x+4

3.25(8.3)+4

Multiply

26.975+4

Add

30.975

Round to the nearest cent/hundreth

30.98

So, it costs $30.98 to travel 8.3 miles

Hope this helps! :)

5 0
4 years ago
A−(a+b)x=(b−a)x−(c+bx), if b≠ 0<br><br> HELP ASAP WILL MARK BRAINLIEST
11Alexandr11 [23.1K]

Answer:

ok

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Write an equation of the cosine function with amplitude pi/2 and period 3
juin [17]

Answer:

y = \frac{\pi}{2}cos(\frac{2\pi}{3}x)

Step-by-step explanation:

Given

Amplitude = \frac{\pi}{2}

Period = 3

Required

Write the equivalent cosine function

The general formula is:

y = acos(bx)

Where

amplitude = |a|

period = \frac{2\pi}{b}

Substitute \frac{\pi}{2} for amplitude in amplitude = |a|

|a| = \frac{\pi}{2}

a = \frac{\pi}{2}

Substitute 3 for period in period = \frac{2\pi}{b}

\frac{2\pi}{b} = 3

<em>Multiply both sides by b</em>

2\pi = 3b

<em>Divide through by 3</em>

b = \frac{2\pi}{3}

Hence;

y = acos(bx) becomes

y = \frac{\pi}{2}cos(\frac{2\pi}{3}x)

5 0
3 years ago
Ken made $14,500 in five months at his new job. How much can he expect to make in two years if his pay remains constant?
Wewaii [24]

If ken makes $14,500 in 5 months that means he make 2,900 in a month. 24 times $2,900 is $69,600 so the answer is $69,600. He can expect $69,600 is two years.

4 0
3 years ago
Read 2 more answers
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