All categories

3 years ago

Factor this quadratic expression: a2 - 2a - 15

Mathematics

2 answers:

Mumz [18]3 years ago

8 0

A² - 2a - 15
= a² - 5a + 3a - 15
= a(a-5) + 3(a-5)
= (a-5)(a+3)

Sliva [168]3 years ago

7 0

A^2-2a-15

1. Ask: Which two numbers add up to -2 and multiply to -15?
-5 and 3

2. Rewrite the expression using the above
(a-5)(a+3)

Have a nice day :D

You might be interested in

Westin is on vacation and wants to purchase something for 350 euro. how much would this cost in us dollars ?

Snezhnost [94]

Answer:

418.69 usd

Step-by-step explanation:

8 0

3 years ago

When Mr. P. drinks an 8-ounce glass of cola, how many teaspoons of sugar is he consuming if one teaspoon of sugar provides 4 gra

natta225 [31]

The number of teaspoons of sugar that Mr. P. consumes is = 56.7 teaspoons.

<h3>Calculation of total sugar quantity</h3>

The total amount of cola taken is 8-ounce

To covert ounce to grams , the following is carried out;

1 ounce =28.35g

8 ounce = X

Xg = 8 × 28.35

X = 226.8g

But one teaspoon = 4 grams

X teaspoon = 226.8g

cross multiply to solve for x

X = 226.8g/ 4

X = 56.7 teaspoons

Therefore, the number of teaspoons of sugar that Mr. P. consumes is = 56.7 teaspoons.

Learn more about multiplication here:

brainly.com/question/10873737

4 0

2 years ago

Kevin jogged 2 1/2 miles in 1/3 of an hour. What was his average rate in speed in miles per hour? Show your work.

Arlecino [84]

Answer:

7.5 miles per hour

Step-by-step explanation:

Average Speed = Total Distance/Total Time

$\frac{2 \frac{1}{2} }{\frac{1}{3} }$ = 7.5 miles/hour

Answer from Gauthmath

3 0

3 years ago

Pls pls pls help me this is due soon

Thepotemich [5.8K]

Answer:

x+18

Step-by-step explanation:

6 0

3 years ago

The statement the sum of x and 7% of x is at least 30"

tigry1 [53]

Answer:

x + 0.07x ≥ 30

Step-by-step explanation:

A sum is terms separated by a plus sign.

"Is at least" means "is greater than or equal to."

7% as a decimal fraction is 0.07.

"Of" means "times."

In consideration of the above, you have ...

x plus 7% of x is at least 30

x + 0.07x ≥ 30 . . . . . using math symbols

5 0

3 years ago