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Vesnalui [34]
2 years ago
11

What’s the correct answer to this problem ?

Mathematics
1 answer:
kicyunya [14]2 years ago
5 0

Answer:

y = (x+3)^2 -1

Step-by-step explanation:

The equation for an upward opening parabola is

y = a(x-h)^2 +k

Where (h,k) is the vertex

The vertex is (-3,-1)

y = a(x--3)^2 +-1

y = a(x+3)^2 -1

Put a point in to find a

(0,8)

8 = a(0+3)^2 -1

8 = a (3)^2 -1

Add 1 to each side

8+1 = a9

9=9a

Divide by 9

1 =a

y = (x+3)^2 -1

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Gail has eight united states coins. Their total value is 93 cents. What coins does she have?
Kryger [21]
8 coins = $0.93

3 quarters = $0.75
1 dime = $0.10
1 nickel = $0.05
3 pennies = $0.03

3 + 1 + 1 + 3 = 8 coins

$0.75 + $0.10 + $0.05 + $0.03 = $0.93

5 0
3 years ago
6x + 4y = -14<br> -X-5y=11
kumpel [21]

Answer:

x= -1; y= -2

Step-by-step explanation:

A:   6x+4y= -14  

B:  -x-5y=11

6B is :  -6x-30y=66

A+6B is :  -26y=52

so   y= -2

so A becomes :  6x+4.(-2)= -14

so x= -1

4 0
3 years ago
Solve #14 for x and y plsss I WILL GIVE BRAINLY
frez [133]

7x - 44 = 4x + 4

Add both sides 44

7x - 44 + 44 = 4x + 4 + 44

7x = 4x + 48

Subtract both sides 4x

7x - 4x = 4x - 4x + 48

3x = 48

Divide both sides by 3

3x ÷ 3 = 48 ÷ 3

<h2>x = 16 </h2>

______________________________

Suppose that the angle between 39 and 4x + 4 is t degrees as you know they make a straight line together thus :

39 + t + 4x + 4 = 180

39 + t + 4(16) + 4 = 180

39 + t + 64 + 4 = 180

39 + t + 68 = 180

t + 107 = 180

Subtract both sides 107

t + 107 - 107 = 180 - 107

<h2>t = 73 </h2>

_____________________________

8y - 43 = 4x + 4 + t

8y - 43 = 4(16) + 4 + 73

8y - 43 = 64 + 4 + 73

8y - 43 = 68 + 73

8y - 43 = 141

Add both sides 43

8y - 43 + 43 = 141 + 43

8y = 184

Divide both sides by 8

8y ÷ 8 = 184 ÷ 8

<h2>y = 23 </h2>

6 0
2 years ago
the original price of a winter jacket is $125 is on sale for $81.25 cents what is the percent discount
Hoochie [10]
81.25 / 125 = 0.65
so 65 %

to check 65% * 125 = 81.25 
hope this helps ;)

5 0
3 years ago
Select the correct answer.
tankabanditka [31]

Answer:

Saving (Start) = 1000

Add to savings = 300

y = 300x + 1000

Motorcycle = 5000

Payment = 250

y = 5000 - 250x

Answer is C

Step-by-step explanation:

8 0
3 years ago
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