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Usimov [2.4K]
1 year ago
15

6. Andy scored 90 on the last history exam. He scored 81 this time. By what percent did his score decrease?​

Mathematics
1 answer:
allsm [11]1 year ago
6 0

Answer:

His score decreased by 9 percent this time.

Step-by-step explanation:

From his first history exam he had a score of 90 percent. The difference between his first score and present score is given by

90 - 81 = 9

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2. Which equation in standard form has a graph that passes through the point (-5,8) and has a
atroni [7]

Answer:

a

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = - \frac{1}{5}, thus

y = - \frac{1}{5} x + c ← is the partial equation

To find c substitute (- 5, 8) into the partial equation

8 = 1 + c ⇒ c = 8 - 1 = 7

y = - \frac{1}{5} x + 7 ← in slope- intercept form

Multiply through by 5

5y = - x + 35 ( add x to both sides )

x + 5y = 35 ← in standard form → a

3 0
3 years ago
There are 5 oranges, three apples, 12 grapes, and 2 avocados in the fruit basket of Ms. Canton's refrigerator. Write a ratio of
Akimi4 [234]

Answer:

6:11

Step-by-step explanation:

There are 12 grapes and 12 + 5 + 2 + 3 = 22 total fruits, so the ratio is 12:22 which simplifies to 6:11.

8 0
3 years ago
Read 2 more answers
Am i correct? please be honest
nadya68 [22]

Answer:

Yep. Those are 5 (-4)'s.

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Will mark as brainlist!!!!pls include steps ​
Goryan [66]

Step-by-step explanation:

a) 1.16× 10^-6

standard form should be less than 10. therefore, count decimal places from where the decimal point is located to the right until you reach a number less than 10 ....count the number of shifts in the above is 6 shifts to the right. when moving to the right, power will be negative.(-6)

1.157/1.16 ×10^-6

b) 6.79 × 10^10

67890000000....count till a number less than 10.there will be 10 shifts to the left. the 10 will be your power,(positive) since u r moving to the left exponent is positive

6.789/6.79 × 10^10

6 0
3 years ago
Read 2 more answers
How many feet are in 508 cm ? ​
Alenkasestr [34]

Answer:

16.7

Step-by-step explanation:

30.48cm = 1 foot

508/30.48= 16.6667

round up to 16.7

4 0
2 years ago
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