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Ber [7]
3 years ago
12

Use substitution to write an equivalent quadiatic equation ( 3x^2)^2+7(3x +2) -8=0

Mathematics
1 answer:
mezya [45]3 years ago
7 0

Answer:

9x^4+21x+6=0

Step-by-step explanation:

( 3x^2)^2+7(3x +2) -8=0

((3^2)*(x^2)^2)+(7*3x)+(7*2)-8=0

9(x^4)+21x+14-8=0

9x^4+21x+6=0

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Find the length of the leg of the right triangle leave your answer in simplest radical form
erastova [34]

Answer:

a =12*sqrt(2)

Step-by-step explanation:

3.  The Pythagorean theorem states

a^2 + b^2 = c^2  where a  and b are the legs and c is the hypotenuse

a^2 +21^2 = 27^2

a^2 +441 =729

Subtract 441 from each side

a^2 +441-441 = 729 -441

a^2 =288

Take the square root of each side

sqrt(a^2) = sqrt(288)

sqrt(xy) = sqrt(x)sqrt(y)

a = sqrt(144)sqrt(2)

a =12*sqrt(2)

7 0
3 years ago
John has 350 which is 50 more than sally has, how much does sally have?
Tanya [424]

Answer:

sally has 400.

Step-by-step explanation:

because if u add 350 and 50 it equals 400

3 0
3 years ago
Read 2 more answers
Mr. Adams drove his delivery truck 151.2 miles during 2.4 days. He drove the same number of miles each day. How many miles did h
Dmitriy789 [7]
Answer 63 miles
Explains 151.2 / 2.4 = 63
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3 years ago
Violet wants to find the best time to try to sell vacation plans in a kiosk near the food court. Which statement best describes
Svetlanka [38]
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3 years ago
I can't figure out how to solve for x
Romashka [77]
The answer i got was x=2 :)

Step 1: Simplify both sides of the equation.
x−2 over 3−(x+3 over 5)=−1
Simplify: (Show steps)
2 over 15x+−19 over 15=−1
Step 2: Add 19/15 to both sides.
2 over 15x+−19 over 15+19 over 15=−1+19 over 15
2 over 15x=4 over 15
Step 3: Multiply both sides by 15/2.
(15 over 2)*(2 over 15x)=(15 over 2)*(4 over 15)
3 0
4 years ago
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