what is the factorization of the trinomial below -x^2+x+42 A. (x+6)(x-7) B. -1(x+7)(x+6)C. -1(x-7)(x+6) D. (-x+6)(x+7)
Answers
Answer:
-(x - 7)(x + 6)
Step-by-step explanation:
Step 1: Factor GCF
-1(x² - x - 42)
Step 2: Factor quadratic
-1(x - 7)(x + 6)
Answer:
C
Step-by-step explanation:
-x²+x+42
=-(x²-x-42)
[7-6=1,7×-6=-42]
=-(x²-(7-6)x-42)
=-(x²-7x+6x-42)
=-[x(x-7)+6(x-7)]
=-(x-7)(x+6)
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Tammy wants to get change for $.30. The only coins she can get are quarters, nickels and dimes. How many different ways can she get $.30 using only these coins?
Answers
Answers
Answer: 94
Step-by-step explanation:
Simplify each term
Multiply 2 by 2
4+9x9+9
Multiply 9 by 9
4+81+9
Simplify by adding numbers
add 4 and 81
85 +9
add 85 and 9
94
Hope this helps~
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Answers
Answer:
B. y = 2/3 x.
Step-by-step explanation:
The slope of the line = rise / run = 2/3.
The equation is y = 2/3 x.
Answer:
B. y = 2/3x.
This is your answer!
Answers
Answer:
The original price was $28.
Step-by-step explanation:
Let the original price be = x
There was 40% off on x.
So, sales price was =
Tt was then put on clearance an additional 25% off the sale price.
Means the price now becomes:
With the help of coupon, she got $5 off and paid no more than $7.60, so the equation becomes:
=>
=>
=>
Hence, the original price of the sweater was $28.
Answers
Answers
a * b = 180
a (width) = unknown
b (length) = 1 1/4a
We can write it down as:
a * 1 1/4 * a = 180
a² * 1 1/4 = 180 / ÷ 1 1/4 (both sides)
a² = 144 / square root (both sides)
a = 12
Doublecheck:
a = 12
b = 1 1/4 * 12 = 15
a * b = 12 * 15 = 180 (so it's correct)
Answer: The dimensions of the painting are 12 x 15 inches.