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Tatiana [17]
3 years ago
5

Write the equation of the parabola that has the vertex at point (-2, -2) and passes through the point (-1, -1)

Mathematics
1 answer:
barxatty [35]3 years ago
5 0

Answer:

y = (x+2)²-2

Step-by-step explanation:

Use the vertex form y = a(x-h)²+k. Plug in the vertex for h and k. Solve for a and you will get 1 for that value. You can check your answers by plugging in both of those points to make sure.

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Cable company A charges $45 a month for cable plus a $18 installation fee. Cable B charges $39 a month for cable plus a $30 fee
blagie [28]

Question

Cable company A charges $45 a month for cable plus a $18 installation fee. Cable B charges $39 a month for cable plus a $30 fee for installation. Which inequality can be used to find out when the monthly cost for Cable company A is less than Cable company B?

a)39x+30<45x+18

b) 45x+18>39x+30

c) 45x+18<39x+30

d)39x+18<45x+30

Answer:

c) 45x+18<39x+30

Step-by-step explanation:

Step 1

We have to find the Algebraic expressions for the cable companies

Cable company A charges $45 a month for cable plus a $18 installation fee.

Let the number of months be represented as x

Hence, this is represented as:

$45 × x + $18

= 45x + 18

Cable B charges $39 a month for cable plus a $30 fee for installation.

Let the number of months be represented as x

Hence, this is represented as:

$39 × x + $30

= 39x + 30

The inequality that can be used to find out when the monthly cost for Cable company A is less than Cable company B?

= Cable company A < Cable company B

= 45x + 18 < 39x + 30

Therefore option c is correct

8 0
3 years ago
No links plz<br><br><br> x+1/ 3x^3 +10x^2-x-9
Irina-Kira [14]

Answer:

You didn't tell us much on what to do, so I just guessed you wanted it simplified. If you want a different answer, please do so tell me and I'll edit my answer to fit.

Simplified: 10x^{2} + \frac{1}{3x^{3} } - 9

5 0
3 years ago
A class has 32 pupils if 12 are boys what percent are girls
valina [46]
So 12 out of 32=12/32=6/16=3/8

percent means parts out of 100 so
x/100=x%

3/8=0.375/1
0.375/1 times 100/100=37.5/100=37.5%

answer is 37.5%
3 0
4 years ago
2 (3*5) divided 2 to the secound power + 1
Levart [38]

Answer 6

Step-by-step explanation:

remove the para-these 2 x 3 x 5 / 2 power of 2 + 1

you get 30/ 5

30/5 =

6 therefore your answer is 6

5 0
3 years ago
What are the first 100 digits of pi (<img src="https://tex.z-dn.net/?f=%5Cpi" id="TexFormula1" title="\pi" alt="\pi" align="absm
diamong [38]

Answer:

1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679

3 0
3 years ago
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