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Goshia [24]
4 years ago
15

If Anna’s test grades are 66, 90, and 99, what is her test average?

Mathematics
2 answers:
blsea [12.9K]4 years ago
5 0

Answer:

85

Step-by-step explanation:

You have to add up all the numbers

60+90+99=255

Then divide by the number of numbers you added together

255 divided by 3 equals 85

shtirl [24]4 years ago
4 0

Answer:

The average is 85

Step-by-step explanation:

To find the average, add up all the scores and divide by the number of scores

(66+90+99) / 3

255/3

85

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A phone company charges a $5 monthly service fee and $0.25 for every minute of long-distance call time. If your telephone budget
VladimirAG [237]
The maximum number is 33. $0.25 multiplied by 4 is $1.00. If you multiply $1.00 by 8, the result is $8.00. If you multiply 8 by 4, since the number of quarters equivalent to $1.00 is 4, the result is 32. The remaining number is 0.45. You can only add 1 more quarter. 32+1=33. Therefore, the answer is 33.
3 0
4 years ago
The temperature was -5°F when Sally went to school on Monday. The temperature rose
lesya692 [45]

Answer:

-40

You start at -5 then you add 20 to get 15 . Then you subtract 25 from 15 to get -10. Then you add 40 to -10 to get 30. Then you have to subtract 70 from 30 to get -40 F.

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
What is the equation of a line perpendicular to why=2x-6 that passes through (5,4)
almond37 [142]

Answer:

y = ½(13- x)

Step-by-step explanation:

Step 1. Find the<em> slope (m₁) of the original line </em>

The equation for the original line is

      y = 2x - 6

slope = m₁ = 2

Step 2. Find the <em>slope (m₂) of the perpendicular line </em>

m₂ = -1/m₁     Substitute the value of m₁

m₂ = -1/2

Step 3. Find the <em>equation for the perpendicular line</em>

y = mx + b     Substitute the value of m₂

y = -½x + b

The line passes through (5, 4).  

4 = -½(5) + b     Add 5/2 to each side

4 = -5/2 + b     Add 2 to each side

b = 13/2  

y = -½x + 13/2

y = ½(13 – x)  

In the image, below, the red line is the graph of your original equation.

The blue line passing through (5, 4) is the perpendicular line.

4 0
3 years ago
Help 6th grade math i will give brainliest to the person who answers all
Dominik [7]

Answer:

1. Equivalent

The rest are not

Step-by-step explanation:

This is my thinking, sorry if I got it wrong...

In the first pair, 6 will be multiplied by 5, which is 30, the 6 will be multiplied by x as well. The second one is not equivalent as 4 is not multiplied. The last one is that y did not get multiplied.

3 0
3 years ago
First, the population is subdivided by metropolitan area. Then a crime researcher uses a random number generator to select twent
ss7ja [257]

Answer:

C. Stratified Sampling

Step-by-step explanation:

Stratified sampling is a sampling method in which the overall population is divided into a number of smaller sub groups.

These smaller sub-groups are called as strata.

These sub-groups are formed on the basis of similar characteristics and attributes shared by the population.

It is also known as proportional random sampling.

3 0
4 years ago
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