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3 years ago

PLSSS HELP IF YOU TURLY KNOW THISS

Mathematics

2 answers:

Lorico [155]3 years ago

7 0

Answer:

0.78 is the answer

Step-by-step explanation:

divide and round up

Hope it helps you! :):):):):):):):):):)

amm18123 years ago

5 0

0.78

hope this helps, good luck! :)

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shen has ridden 4 miles of a bike course. the course is 40 miles long. what percentage of the course has shen ridden so far?

s344n2d4d5 [400]

Answer:

10% out of 100%.

Or 4/40=1/10 which is 10%.

Shen has ridden her bike for 10% of the course

4 0

4 years ago

In two or more complete sentences write and solve an equation for the situation and explain how you will solve the equation. Fif

miv72 [106K]

We conclude that the starting average grade is 79.17%

<h3>How to write the equation and solve it?</h3>

There are 50 students, let's say that the grades are measured between 1% and 100%.

And the average grade of the 50 students is A.

We know that after it increased by 20%, the average of the grades is 95.

Then we just need to solve the percentage equation:

95 = A*(1 + 20%/100%) = A*(1.2)

95/1.2 = A = 79.17

We conclude that the starting average grade is 79.17%

If you want to learn more about percentages:

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6 0

2 years ago

A mowing company charges $840 plus $17 per hour. Another moving company charges $760 plus $22 per hour. How long is a job that c

Korvikt [17]

Answer: 16 hours

Step-by-step explanation:

The two equations are:

840 + 17x

and

760 + 22x

with x being the amount of hours

840 + 17x = 760 + 22x

-760

80 + 17x = 22x

-17x

80 = 5x

16 = x

840 + 17(16) = 1,112

760 + 22(16) = 1,112

3 0

3 years ago

Select the two binomials that are factors of this trinomial.

const2013 [10]

$\huge{ \mathfrak{ \underline{question : }}}$

Select the two binomials that are factors of this trinomial.

$x_2 + 8x + 12$

$\huge{ \mathfrak{ \underline{Answer : }}}$

${x}^{2} + 8x + 12$

${x }^{2} + 6x + 2x + 12$

$x (x + 6) + 2(x + 6)$

$(x + 2)(x + 6)$

We got the factors as :

$A. \: (x + 6)$

and

$D. \: (x + 2)$

$\#TeeNForeveR$

7 0

3 years ago

About 2% of the population has a particular genetic mutation. 500 people are randomly selected.

S_A_V [24]

The standard deviation for the number of people with the genetic mutation in such groups is 3.1305.

<h3>Standard Deviation</h3>

In statistics, the standard deviation is a measure of the amount of variation or dispersion of a set of values. A low standard deviation indicates that the values tend to be close to the mean of the set, while a high standard deviation indicates that the values are spread out over a wider range.

Let X be the number of people with genetic mutation is a group of 500,

The formula of standard deviation is given as

$SD=\sqrt{n*p(1-p)} \\SD=\sqrt{500*0.02*0.98} \\SD=3.1305$

The standard deviation of the given sample is 3.1305

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4 0

1 year ago