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ValentinkaMS [17]
3 years ago
7

Running out of time hurryyyyyyyy

Mathematics
1 answer:
Gelneren [198K]3 years ago
6 0

Answer:

I'm not sure but I think 8

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Question 4(Multiple Choice Worth 1 points)
lianna [129]

Answer:

Ox=4 is the answer for the question

7 0
2 years ago
Please find which quadratic equation matches the graph with work attached
lesya [120]

Answer:

C

Step-by-step explanation:

Firstly, we know that the function must be negative due to its shape. This means that the answer cannot be B

Next we can use the equation x=\frac{-b}{2a} that is used in order to find the vertex of the parabola.

A)

f(x)=-x^2+6x+7\\a=-1,b=6,c=7\\\\x=\frac{-6}{-2} \\x=3

As the vertex is at x=3 on the graph, this one could be a contender.

C)

f(x)=-x^2+6x-7\\a=-1,b=6, c=-7\\\\x=\frac{-6}{-2} \\\\x=3

This also could be the equation

D)

f(x)=-x^2-6x-7\\\\a=-1, b=-6, c=-7\\\\x=\frac{6}{-2} \\\\x=-3

This rules option D out.

For this last step, we can look at where the zeroes would be for each equation. (These values are irrational, so we cannot look at specific number)

A)

f(x)=-(x^2-6x-7)

As this equation has a negative value for c, this means that one zero must be positive and the other must be negative.

This means that option A can be ruled out

C)

f(x)=-(x^2-6x+7)

As this equation has a positive value for c, this means that both of the zeroes must be positive. This means that it is the only one that fits all of the criteria.

7 0
3 years ago
A sporting event held at a high school had 135
Anastaziya [24]
911 is the key of power of mind
6 0
2 years ago
Read 2 more answers
Marcia is building a doghouse and needs to cut plywood for the roof. Plywood comes in sheets that are 48
djverab [1.8K]

Answer:

A,24ft

Step-by-step explanation:

you have 48^2ft and Marcia needs two squares that are each 12^2ft,

12+12=24

48-24=24

                                                            answer=24ft

8 0
3 years ago
Marco needs to climb up to the roof of his house. He placed his ladder so that the bottom of
8090 [49]

Answer:

12.4 feet

Step-by-step explanation:

A ladder placed against the wall forms a right angle triangle

Hypotenuse ² = opposite ² + adjacent ²

Hypotenuse = 13 feet

Opposite = 4 feet

Adjacent = x

Hypotenuse ² = opposite ² + adjacent ²

13² = 4² + x²

169 = 16 + x²

169 - 16 = x²

153 = x²

Find the square root of both sides

√153 = √x²

12.369316876852 = x

x = 12.4 feet

Adjacent = x = 12.4 feet

6 0
3 years ago
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