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alekssr [168]
2 years ago
5

Hellppp 70 pointsss

Mathematics
1 answer:
dimulka [17.4K]2 years ago
7 0

y=a.(X-x1)(X-x2)

x1 and x2 are x-intercepts

x1=-3

x2=1

other points: (-1,8) and (0,5)

y=a.(x+3).(x-1)

a=-2

f(x)= -2.(x+3)(x-1)

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What is 4% of 75 please
Paul [167]
4% Of 75 is 3 so yeah the answer to your question is 3
8 0
2 years ago
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Suppose you have 20 coins that total $3.00. Some coins are nickels and some are quarters. Which of the following pairs of equati
shusha [124]

Answer: D. n + q = 20

5n + 25q = 300

Step-by-step explanation:

Let n represent the number of nickels that you have.

Let q represent the number of quarters that you have.

Suppose you have 20 coins. It means that

n + q = 20

The total value of the coins is $3. The value of a quarter is $0.25 and the value if a nickel is $0.05. Therefore, the equation would be

0.05n + 0.25q = 3

Multiplying both sides of the equation by 100, it becomes

5n + 25q = 300

The correct option is

D. n + q = 20

5n + 25q = 300

6 0
2 years ago
How do u solve 1/2x < -6
Komok [63]
Explanation:
Step 1) Add
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x
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12
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0
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12
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Step 2) Divide each side of the equation by
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8 0
3 years ago
What is the solution to the equation 2/3 x + 1 = 1/6 x -7
slamgirl [31]

Answer:

x = -16

Step-by-step explanation:

2/3 x + 1 = 1/6 x -7

Multiply both sides of the equation by 6 to eliminate the fraction

6*(2/3 x + 1) =6( 1/6 x -7)

4x +6 = x -42

Subtract x from each side

4x-x +6 = -42

3x +6= - 42

Subtract 6 from each side

3x+6-6 = -42-6

3x = -48

3x/3 = -48/3

x = -16

3 0
3 years ago
Find the surface area of this triangular prism. Be sure to include the correct unit in your answer.
makkiz [27]

Answer:

390ft^2\\

Step-by-step explanation:

Ok so we have 2 (congruent) triangles and 3 rectangles.

Your main approach to this problem should be to find the area of each of the faces and adding them up to get to your final answer. Your question makes a point of including the correct unit in your answer. Since this is surface area, the unit would be ft^2

Now let's start:

First, I am going to start with finding the area of the rectangles.

12\cdot11=132\\13\cdot11=143\\5\cdot11=55\\\\55+143+132=330

Alright, next lets move on to the triangles.

They are both the same, if you notice. So find one and double it.

12\cdot5=60\\\frac{60}{2}=30\\30\cdot2=60

now lets add em all

330+60

= 390 and thats your final answer, dont forget to include the unit, ft^2

8 0
2 years ago
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