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Debora [2.8K]
3 years ago
11

What three that are equivalent to 4:3.

Mathematics
1 answer:
stich3 [128]3 years ago
5 0
Three that are equivalent are 12:9 8:6 28:21
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5(a + 2b)<br><br> Please help me on this problem
just olya [345]
If you are looking to get it into standard form, you distribute the 5 to get 5a+10b
3 0
3 years ago
Read 2 more answers
A new phone costs $230 and the sales tax rate is 7%. What is the total cost of the camera after tax?
rosijanka [135]

That's a question about percentage.

One way to represent percentage is using decimal number. In this way, 1 is equivalent to 100% and the other less percentages using numbers between 0 and 1.

Examples:

  • 90% is equivalent to 0,90.
  • 5% is equivalent to 0.05. It's not 0.5 because 0.5 is equivalent to 50%.
  • 13.17% is equivalent to 0.1317.
  • 245% is equivalent to 2.45.

If we want to know the percentage of a number, we should multiplacate the number by the porcentage in the decimal number form.

Examples:

  • 55.90% of 200 is equal to: 200 \times 0.5590 = 111.8
  • 360% of 88 is equal to: 88\times 3.6 = 316.8

In our problem, we have a phone with a increase of 7%. To solve that, it's important to perceive that $230 is equal to 100% and with a increase of 7%, we will pay 107%.

107% in the decimal number form is 1.07. With that information, we should multiplicate 1.07 by the original value and we will find the answer.

We know that 230\times 1.07 = 246.1, therefore, the total cost of the phone after tax is $246.1.

I hope I've helped. :D

Enjoy your studies. \o/

4 0
3 years ago
Simplify the expression:<br> x+2/ x^2 -4 - (x - 2)
bonufazy [111]

Answer:

2 ( 1 + x )  ( 1 − x ) over  x ^2

Step-by-step explanation:

if you didn't get that its 2 ( 1 + x )  ( 1 − x ) as the numerator and  x ^2 as the denominator

3 0
3 years ago
Read 2 more answers
Which statements correctly describe the cosine and sine functions? Check all that apply.
VMariaS [17]

Answers:

B: <em>The sine function increases on (0°, 90°) and (270°, 360°).</em>

C: <em>The cosine function decreases on (0°, 180°).</em>

E: <em>Both the cosine and sine functions have a maximum value of 1.</em>

F: <em>Both the cosine and sine functions are periodic.</em>

4 0
3 years ago
I need help if you can thanks?
9966 [12]

Answer:

what do you want me to do subtraction, addition, multiplication or division?

Step-by-step explanation:

3 0
2 years ago
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