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daser333 [38]
3 years ago
6

The teacher ordered pizza for her math class to celebrate their success at learning how to solve problems with percents. The pri

ce of the pizza was $56.15. The delivery driver delivered the pizza on-time and was tipped 20%. a. What was the total cost of the pizza, including tip?
Mathematics
1 answer:
MaRussiya [10]3 years ago
4 0

Answer: 56.35

Step-by-step explanation:

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(Factorize): x^2 + 4x + 4 - 9y^2<br>​
aalyn [17]

Answer:

x²^2 + 4x + 4 - 9y²=(x+2-3y) (x+2-3y)

Step-by-step explanation:

hello :

x²+4x+4 = x²+2(2x)+2²=(x+2)²  use identity : (a+b)² = a²+2ab+b²

( x² + 4x + 4) - 9y² = (x+2)²-(3y)²  = (x+2-3y) (x+2-3y)  use identity :

a²-b² =(a-b)(a+b)

3 0
3 years ago
Your friend says that the absolute value equation ∣3x + 8 ∣ − 9 = −5 has no solution because the constant on the right side of t
SashulF [63]
No, ur friend is not correct

| 3x + 8 | - 9 = -5....u have to get the absolute value (and everything in it) on one side of the equal sign, and everything else on the other side. So we have to get that -9 across the equal sign by adding 9 to both sides
| 3x + 8 } = -5 + 9
| 3x + 8 | = 4...so that number is not negative anymore
now u can set up ur 2 equations and solve for x...ur 2 equations would be: 
3x + 8 = 4 and 3x + 8 = -4...so there will be 2 solutions

** if that -9 would not have been there, then ur friend would have been correct
5 0
3 years ago
Read 2 more answers
Use the Pythagorean Theorem to find the distance
docker41 [41]

Answer:

About 10.05

Step-by-step explanation:

The change in x is 1, so the bottom line is a length of 1. The change in y is 10, so the right line is 10. Since a^2+b^2=c^2, 1^2+10^2=101, and the square root of 101 is about 10.05.

7 0
2 years ago
If Jeremy is in the 90th percentile in the main office test scores is 180 with a standard deviation of 15 which of the following
Alika [10]
199. 

the z score for the 90th percentile is 1.28, so you can solve the equation

\frac{x-180}{15} = 1.28

which gets you the 199
4 0
3 years ago
Debbie did a survey of how many states the members of her class had visited. The
jeyben [28]

Answer:

17

Step-by-step explanation:

6 0
3 years ago
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