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topjm [15]
3 years ago
7

What are the solutions of the quadratic equation? Solve by factoring. 4x^2-18x+20=0

Mathematics
1 answer:
Romashka-Z-Leto [24]3 years ago
3 0

Answer:

x = 5/2,2

Step-by-step explanation:

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A grocery store is offering a sale on bread and soup. Khalil buys four cans of soup and
Flura [38]

Answer:

a) cblo

2)$3.44

Step-by-step explanation:

4 cans and 3 loaves=11.67

8 cans and 1 loaf= 12.89.

Set up equation:

x=cans

y=loaves

4x+3y=11.67\\8x+y=12.89 This is the answer for question A.

Multiply eq1 by 2:

8x+6y=23.34

Subtract eq3 by eq2:

5y=10.45\\y=2.09

Substitute:

8x+2.09=12.89\\8x=10.8\\x=1.35

One can of soup and one loaf of bread=

1.35+2.09 or 3.44

So:

$3.44

Hope this helps :D Please hit the crown if u can !!

6 0
3 years ago
To convert 58.58 to a fraction, we evaluate 58.58-0.58 What is 58.58-0.58 ?
lord [1]

Answer:

58

Step-by-step explanation:

58.58 - 0.58 = 58

4 0
3 years ago
Read 2 more answers
Which points are generated by the function y = -5x + 2? Check all that apply. (2, 8) (2, -8) (13, 3) (3, -13)
Zanzabum
(2,-8) (3,-13) because if you plug them all in there the only ones that come out right 

4 0
3 years ago
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A rubber ball is dropped onto a hard surface from a height of 9 feet, and it bounces up and down. At each bounce it rises to 80%
8_murik_8 [283]
There are 12 inches in a foot, so 9ft = 108in. Also, 80% = 0.8. Therefore the formula is: h(n) = 108 * 0.8^n. To find the bounce height after 10 bounces, substitute n=10 into the equation: h(n) = 108 * 0.8^10 = 11.60in (2.d.p.). Finally to find how many bounces happen before the height is less than one inch, substitute h(n) = 1, then rearrage with logarithms to solve for the power, x: 108 * 0.8^x = 1; 0.8^x = 1/108; Ln(0.8^x) = ln(1/108); xln(0.8) = ln(1\108); x = ln(1/108) / ln(0.8) = -4.682 / -0.223 = 21 bounces
4 0
3 years ago
Use the quadratic formula to findntge roots of the equation 2X2-28X+98=0
JulijaS [17]
The answer to that equation is {7,7}
3 0
3 years ago
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