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Sophie [7]
3 years ago
15

The graphs below have the same shape. What is the equation of the red

Mathematics
2 answers:
Olenka [21]3 years ago
8 0
D. F(x)=2-x^2 i know for sure because it opens downward is on the 2 of the y axis
Svetllana [295]3 years ago
4 0

Answer:

The answer is D. F(x) =2-X²

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What percent of 75 is 45 show your work
erastovalidia [21]

Multiply the fraction by 100%.

\dfrac{45}{75}\times 100\%=60\%

5 0
3 years ago
What is 7 billion in standard form?
zimovet [89]
If by standard from you mean numbers (123) and not words then

1 milllion=1000 thousand or 1000*1000 or 1,000,000
1 billion=1000 million=1000*1000*1000=1,000,000,000
so 7billion=7*1000*1000*1000=7,000,000,000
4 0
3 years ago
Read 2 more answers
Solve. -7x=x^2+12 help
Nat2105 [25]

Hey There!

The answer to your problem is x=-3 or x=-4 both answers are correct!

<u>Step 1: Subtract x²+12 from both sides.</u>

−7x−(x²+12)=x²+12−(x²+12)

−x²−7x−12=0

<u>Step 2: Factor left side of equation.</u>

(-x-3)(x+4)=0

<u>Step 3: Set factors equal to 0.</u>

-x-3=0 or x+4=0

<u>Get your answer:</u>

x=-3 or x=-4

3 0
3 years ago
Arc measure with equations
Alona [7]

Answer:131

Step-by-step explanation:

7 0
3 years ago
New streetlights will be installed along a section of the highway. The posts for the streetlights will be 7.5 m tall and made of
SIZIF [17.4K]
First, we determine the volumes of the posts may it be cylindrical in shape or rectangular prism. 

(A) cylindrical:
                         ( π(26.7/100)² - π(24.2/100)²)*(7.5) = 0.3 m³
(B) rectangular prism:
                          (40/100)²(7.5) - (35/100)²(7.5) = 0.28125 m³

Then, we calculate for the amount of substance
 (A) cylindrical:   (0.3 m³)(2700 kg/m³) = 810 kg
 (B) rectangular prism : (0.28125 m³)(2700 kg/m³) = 759.375 kg

Then, calculate for the costs
 (A) (810 kg)($0.38/kg) = $307.8
 (B) (759.375 kg)($0.38/kg) = $288.56

Thus, the answer for A is rectangular post 
B. About $19.24 can be saved. 
6 0
3 years ago
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