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EastWind [94]
3 years ago
8

Please help me asap i will mark branlist please explain

Mathematics
1 answer:
Ulleksa [173]3 years ago
6 0
It would be b because a^2+b^2=c^2 so in this case 5^2+8^2=c^2
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Find the value of f(3) if f(x) = 4x^2 - 8x 3. <br> a. 3 <br> b. 12 <br> c. 15 <br> d. 18
Vladimir [108]
I hope this helps you



x=3



f (3)=4.3^2-8.3+3



f (3)=36-24+3=15



f (3)=4.3^2-8.3-3=36-24-3=5
3 0
3 years ago
Tiffany is 140 miles away from Maggie. They are traveling towards each other. If Maggie travels 5 mph faster than Tiffany and th
8090 [49]

Answer: Tiffany 15mph, Maggie 20mph

Step-by-step explanation:

Set up the equation 4((x+5) + x) = 140. x+5 represents how many miles Maggie covered in one hour. x represents how much Tiffany traveled in one hour. 140 is the number of miles in total. 4 is the number of hours in total.

Simplify the equation.

(x+5) + x = 35    Divide both sides by 4

2x+5 = 35         Combine like terms

2x = 30              Subtract 5 from both sides

x = 15                 Divide both sides by 2

Tiffany traveled 15mph, while Maggie traveled 15+5=20mph.

3 0
2 years ago
If a circle has a diameter of 8cm, what is the radius of this circle?
oee [108]

Answer:

r=4cm

d Diameter

cm

d

r

r

r

d

d

C

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Unit Conversion:

d=8cm

Using the formula

d=2r

Solving forr

r=d

2=8

2=4cm

Step-by-step explanation:

6 0
2 years ago
canstanza has 13 blue envelopes she has 3 fewer yellow envelopes then blue envelopes she has 7 times as many green envelopes as
zavuch27 [327]

She has 93 envelopes in all


8 0
3 years ago
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7x-3=-3+7x i neep help answer this please
erica [24]

Answer:

All real numbers are solutions.

Step-by-step explanation:

Let's solve your equation step-by-step.

7x− 3 = − 3 + 7x

Step 1: Simplify both sides of the equation.

7x − 3 = −3 + 7x

7x + −3 = −3 + 7x

7x − 3 = 7x − 3

Step 2: Subtract 7x from both sides.

7x− 3 −7x = 7x −3 −7x

−3 = −3

Step 3: Add 3 to both sides.

−3 + 3 = −3 + 3

0 =  0

7 0
3 years ago
Read 2 more answers
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