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Nookie1986 [14]
3 years ago
10

Find the x-intercepts for y = -7x2 + 4x + 9 using the quadratic formula. Choose all

Mathematics
1 answer:
Nataly_w [17]3 years ago
4 0
What are the answer choices 35
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Solve −3x2 + 30x − 90 = 0. x equals 5 plus or minus 2i square root of 5 x equals 5 plus or minus i square root of 5 x equals 10
Tcecarenko [31]
The x in your equation is 16/5 or 3 1/5 or 3.2 if you want it simplified 
5 0
2 years ago
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If a shirt costs $40 and the amount of tax collected was $2 what is the sales tax rate?
scoundrel [369]

Answer:

5%

Step-by-step explanation:

To find the tax, we take the price times the tax rate

2 = 40* rate

Divide each side by 40

2/40 =rate

.05 = rate

Changing to percent form

5% = rate

7 0
3 years ago
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What is the value of the expression [(1+5)x2-5]x2
Stella [2.4K]
[6 x 2 - 5] x 2
= (12 - 5 ) x 2
= 7 x 2
=14
3 0
2 years ago
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Whats is the job of dentisy​
SSSSS [86.1K]

Answer:

A dentist, also known as a dental surgeon, is a medical professional who specializes in dentistry, the diagnosis, prevention, and treatment of diseases and conditions of the oral cavity. The dentist's supporting team aids in providing oral health services. Wikipedia

6 0
2 years ago
THERE IS A ANSWER CALLED 'C' BUT it's NOT IN THE IMAGE HELP
larisa [96]

The correct answer I would think would be C but I would try A because B does no have a proportion of 3/4.

4 0
3 years ago
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