All categories

3 years ago

Sam scored 59, 64, and 68 on three test. How many points should he get on the fourth test to get an average score of 70?

Mathematics

2 answers:

wel3 years ago

7 0

Answer:

To find this out the easy way, add up all the numbers and an answer, then divide by 4.

59 + 64 + 68 + 63.67 = 254.67

254.67/4 = 63.66

A is not correct.

59 + 64 + 68 + 65.25 = 256.25

256.25/4 = 69.25

B is not quite correct.

59 + 64 + 68 + 75 = 266.

266/4 = 66.5

C is not correct.

59 + 64 + 68 + 89 = 280

280/4 = 70.

D.) is the correct answer.

I hope this helps!

ch4aika [34]3 years ago

5 0

The correct answer would be (D - 89 points)
59+64+68
=191 + 89
=280/4
=70(%)

You might be interested in

10 divided by 1 7/8 = 4x what is x? hurry!!

Ostrovityanka [42]

X= 20/17 ; multiply by reciprocal 10 times 8/17 =4x then 80/17=4x , divide both sides by 4 leaves you x=20/17

3 0

3 years ago

Read 2 more answers

lutik1710 [3]

Answer:

Step-by-step explanation:

You'll divide the tip by the sub-total and multiply by 100

7/52.99 *(100) =13.21%

6 0

3 years ago

please help me to solve both question.....need your help....N33d your working...i swear i will mark brainliest who answer it♥♥♥

emmasim [6.3K]

Answer:

Hello. The answer is 250.

Step-by-step explanation:

The explanation takes alot of time

The two important tips are

Sum of the interior angles of triangle is 180

And for those which have 4 sides are 360

4 0

3 years ago

Please help, I dont know how to do this

Mrrafil [7]

Answer:

$\frac{y-2}{4}$

Step-by-step explanation:

Let's start by factoring everything:

$\dfrac{\frac{y^2+y}{y^2-2y}}{\frac{4y+4}{y^2-4y+4}}=$

$\dfrac{\frac{y(y+1)}{y(y-2)}}{\frac{4(y+1)}{(y-2)^2}}=$

Now, you can cancel out some terms:

$\dfrac{\frac{y+1}{y-2}}{\frac{4(y+1)}{(y-2)^2}}=$

Now, when you divide a fraction by another fraction, that is the same as multiplying the first fraction by the reciprocal of the second one:

$\frac{y+1}{y-2}\cdot \frac{(y-2)^2)}{4(y+1)}=$

$\frac{y-2}{4}$

Hope this helps!

4 0

3 years ago

In the figure below, CD bisects

AlladinOne [14]

It’s C’ D’ hope this helps

7 0

3 years ago