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ExtremeBDS [4]
3 years ago
10

Consider the quadratic function that has x-intercepts of –1 and –7 and passes through the point (–2, –20). What is the value of

a in the factored form of this function?
Mathematics
2 answers:
iVinArrow [24]3 years ago
6 0
The correct answer is 4
andriy [413]3 years ago
3 0
Yes she is correct the answer is 4

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26)A $45.00 purchase in Iowa totals $47.70 with tax and a $35.00 purchase in tennessee totals$37.70 with tax which state has a g
babunello [35]
First, 47.7-45 to get price increase by tax for I which is 2.7. next divide 2.7 by 45 and multiply that by 100 to get a sales tax of 6%. Next 37.7-35 is once again 2.7. divide 2.7/35 and multiply times 100 to get a sales tax of 7.7 for T. T=7.7% and I=6% so since 7.7>6, therefore Tennessee has a greater sales tax then Iowa
6 0
3 years ago
One antifreeze solution is 20% alcohol. Another antifreeze solution is 12% alcohol. How many liters of each solution should be c
katrin [286]
Use this systems of equations to solve:

x = first antifreeze
y = second antifreeze

\left \{ {{.2x + .12y = .18(15)} \atop {x + y = 15}} \right.

Isolate y.

x + y = 15
Subtract x from both sides.
y = -x + 15

Substitute y into the other equation.

.2x + .12(-x + 15) = .18(15)
Simplify.
.2x - .12x + 1.8 = 2.7
Subtract 1.8 from both sides.
.08x = .9
Divide both sides by .08
x = 11.25

Substitute x in the equation that we isolated y in.

y = -11.25 + 15
y = 3.75

11.25 L of the first antifreeze and 3.75 L of the second.
5 0
3 years ago
If y varies directly as x and y = 5.5 when x = 11, find x when y = 3.5
PtichkaEL [24]

Answer:

x=7

Step-by-step explanation:

y=mx

5.5=m×11

5.5÷11=m

m=1/2

y=mx

3.5=1/2×x

3.5÷1/2=x

x=7

4 0
3 years ago
Read 2 more answers
I don't really understand this question so can someone please help
Makovka662 [10]
Hello,

(5x-2)+(2x+6)=67
==>7x+4=67
==>7x=67-4
==>7x=63
==>x=63/7
==>x=9
|AB|=5x-2=5*9-2=45-2=43 (miles)


8 0
3 years ago
X2 - 12x+36<br> A) (x-6)(x + 6)<br> B) (x+6)2<br> C) (x-6)<br> D) (x+12)(x – 3).
lys-0071 [83]

Answer:

C) (x-6)^2

Step-by-step explanation:

x2 - 12x+36

What two numbers multiply to 36 and add to -12

-6*-6 = 36

-6+-6 = -12

(x-6) (x-6)

(x-6)^2

7 0
3 years ago
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