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luda_lava [24]
3 years ago
10

4. Write the quadratic equation in standard form.

Mathematics
1 answer:
kicyunya [14]3 years ago
8 0

Answer:

i think it on of these C. y = 2x2 - 6x + 80

D. y = 2x2 + 6x - 80

Step-by-step explanation:

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In Mrs Phillips math class the ratio of boys to girls is 4 to 2. If there are 51 girls in math class, how many boys are there?
maksim [4K]
So for every two girls, there's four boys. There are twice as many boys than girls, so the number of girls • 2 = your answer.

51 • 2 = 102
7 0
4 years ago
Three students can wash a car in 16 minutes. If the varies inversely with the number of students washing the car, how many minut
aleksley [76]

Answer:

Two students will take 24 minutes to wash the car.

Step-by-step explanation:

In this case we can apply a rule of three to find out the time that will take for the students to wash the car. This has to be done such as:

3 students -> 16 minutes

2 students -> x minutes

3/2 = 16/x

But in this cases the problem states that this variables are inversely proportionate, which means that if there's less students washing the car they will take more time to finish the job. So we need to invert one of the fractions before computing the result.

3/2 = x/16

2*x = 3*16

x = 48/2 = 24 minutes.

Two students will take 24 minutes to wash the car.

4 0
4 years ago
Please help, see attachment
Black_prince [1.1K]

Answer:

The length of DB is 8

Step-by-step explanation:

I know it doesn't look EXACTLY like the one in the diagram but I just followed the measurements provided

4 0
3 years ago
Please help asap!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Fiesta28 [93]

Answer:

The solution is <u>-3</u>.

The graph is attached.

Step-by-step explanation:

To solve, first subtract 2 from both sides to get 5q\geq -15. Now divide 5 from both sides to get q\geq -3.

The graph representing this is attached.

Hope it helps and is correct!

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3 years ago
The cost of manufacturing A certain type of headphone varies inversely as the number of headphones increase . If 5000 headphones
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