All categories

2 years ago

What does Sam need to score on the fourth test to ensure that she will have an average of 90% for all four tests?

Mathematics

1 answer:

olga_2 [115]2 years ago

4 0

Answer:

can u put her other scores pls

You might be interested in

What is the sum of series is numbers 64&66 ?<br> Using the summation notation

iragen [17]

Answer:

64. 6138

66. 8.078125

Step-by-step explanation:

Let's take it one number at a time.

For number 64:

$6(2)^{1-1}=6$

$6(2)^{2-1}=12$

$6(2)^{3-1}=24$

$6(2)^{4-1}=48$

$6(2)^{5-1}=96$

$6(2)^{6-1}=192$

$6(2)^{7-1}=384$

$6(2)^{8-1}=768$

$6(2)^{9-1}=1536$

$6(2)^{10-1}=3072$

Sum = 6 + 12 + 24 + 48 + 96 + 192 + 384 + 768 + 1536 + 3072

Sum = 6138

For number 66:

$12(-\frac{1}{2})^{0}=12$

$12(-\frac{1}{2})^{1}=-6$

$12(-\frac{1}{2})^{2}=3$

$12(-\frac{1}{2})^{3}=-1.5$

$12(-\frac{1}{2})^{4}=0.75$

$12(-\frac{1}{2})^{5}=-0.375$

$12(-\frac{1}{2})^{6}=0.1875$

$12(-\frac{1}{2})^{7}=-0.0078125$

$12(-\frac{1}{2})^{8}=0.046875$

$12(-\frac{1}{2})^{9}=-0.0234375$

Sum = 12 + -6 + 3 + -1.5 + 0.75 + -0.375 + 0.1875 + -0.0078125 + 0.046875 + -0.0234375

or to make things simpler:

Sum = 12 - 6 + 3 - 1.5 + 0.75 - 0.375 + 0.1875 - 0.0078125 + 0.046875 - 0.0234375

Sum = 8.078125

4 0

3 years ago

Which type of checking account pays interest on the mean balance of the account during a particular cycle?

Natali5045456 [20]

Savings account is the one

8 0

3 years ago

Read 2 more answers

In March for every 2 days it rained out of 5 days. A total of 30 days were calculated, How many days did it rain?

icang [17]

Answer:

37 days it rained for sure

4 0

3 years ago

Is this correct???? TYSM

vfiekz [6]

Yep, this is all correct!

-6/2 = y/4

y = (-6×4)/2

y = -24/2

y = -12

x was multiplied by 2

and y was also multiplied by 2

5 0

3 years ago

val walks 2 and 3/5 miles each day. Bill runs 10 miles once every 4 days. In 4 days, who covers the greater distance?

Dmitrij [34]

Val would walk 10 2/5 miles in 4 days, so he/she would travel the greatest distance

8 0

3 years ago

Read 2 more answers