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3 years ago

Help for this question?!?

Mathematics

2 answers:

maxonik [38]3 years ago

5 0

if you do 20.51-18.99 you will get 1.52.

and 1.52 over 20.51 is equal to 7.30 over 100.As we know percents are out of 100

therefore your answer is 7.36%

malfutka [58]3 years ago

4 0

Answer:

TAX IS 8%

Step-by-step explanation:

first we subtract 18.99 from 20.51

we get the number 1.51

then we take this number 1.51 and divide by 18.99

to find the percentage of that 1.51 and of 18.99

its 8%

HOPE THIS HELPS

(also I love bts too!!)

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Can someone please explain how to figure this out!!

kakasveta [241]

2.9% OF the 500 phones are more than likely defective. In order to figure this out you must do 500*0.029 which would equal 14.5 and rounds off to 15. 15 out of the 500 phones will maybe be defective.

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3 years ago

Use the quadratic formula to solve for the roots of the following equation. x 2 – 4x + 13 = 0

Artyom0805 [142]

Quadratic Formula: $x=\frac{-b\pm \sqrt{b^2-4ac}}{2a}$ , with a = x^2 coefficient, b = x coefficient, and c = constant

With our equation, plug in the values:

$x=\frac{4\pm \sqrt{(-4)^2-4*1*13}}{2*1}$

Next, solve the exponent and multiplications:

$x=\frac{4\pm \sqrt{16-52}}{2}$

Next, solve the subtraction:

$x=\frac{4\pm \sqrt{-36}}{2}$

Next, factor out i (i = √-1):

$x=\frac{4\pm \sqrt{36}i}{2}$

Next, solve the square root:

$x=\frac{4\pm 6i}{2}$

Lastly, divide and your answer is:

$x=2\pm 3i$

5 0

3 years ago

Read 2 more answers

Marcus needs to bike at least 80 mi this week for a training if he has already bike 25 mi this week then how many miles should h

Rashid [163]

Marcus needs to bike at least 11 miles each day.

Step-by-step explanation:

Given,

Distance to cover = 80 miles at least

Distance already biked = 25 miles

Number of days left = 5

Let,

x be the distance to cover in 5 days.

According to given statement;

Number of days left * Distance to cover + distance already bike ≥ Total distance to travel

$5x+25\geq 80\\5x+25-25\geq 80-25\\5x\geq 55$

Dividing both sides by 5

$\frac{5x}{5}\geq \frac{55}{5}\\x\geq 11$

Marcus needs to bike at least 11 miles each day.

Keywords: inequality, division

Learn more about division at:

#LearnwithBrainly

7 0

3 years ago

Need Help Rn!!!

fgiga [73]

It would be 5850 hope you get it right:)

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3 years ago

Work out length AC.

Yuki888 [10]

Answer: $\sqrt{105}$

Step-by-step explanation:

As a result of the pythagorean theorem we can say that a^2+b^2=c^2

In this case, we have bc and ab missing side ac. So the equation looks something like this $4^{2}+ac^{2} =11^2$

dont get confused by the ac in the problem i only wrote it like that because ac is the length representation. So 16+ac^2=121 and with algebra we can solve to ac^2=105 or side ac= $\sqrt{105}$

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2 years ago

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