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3 years ago

What graph is a quadratic graph? graph A graph B graph C graph D

Mathematics

2 answers:

WITCHER [35]3 years ago

8 0

Answer:

Step-by-step explanation:

A quadratic graph is a graph that is y=mx^2+B. The x in the equation is to the power of 2 meaning it must go both way. (not the best explanation sorry)

valkas [14]3 years ago

3 0

Answer:

Graph A.

Step-by-step explanation:

Quadracric equations makes a parabola and graph A. Is a parabola

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What is the answer to. -4=5n+6

loris [4]

First you need to leave the variable by itself.
-4=5n+6
-4-6=5n
-10=5n
n=-2 done!

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4 years ago

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Kevin is making a picture frame. He has a piece of trim that is 4 feet long.How many 14−inch-long pieces can Kevin cut from the

Lerok [7]

First, convert 4 feet into inches - 48 inches. Then, divide 48 by 14 to get 3.43, so he can have 3 14-inch long pieces. To get the left over out of a foot, take 14 x 3 to get 42, then subtract 42 from your original 48 inches to get 6 inches left, which is half of a foot.

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3 years ago

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According to the National Institute of Health, about 37% of high school seniors have vaped in the past year. Suppose that a surv

Elodia [21]

Using the Central Limit Theorem, it is found that the mean of the sampling distribution of sample proportions is 0.37.

The <em>Central Limit Theorem</em> establishes that, for a <u>proportion p in a sample of size n</u>, the sampling distribution of sample proportions has:

Mean $\mu = p$ .

Standard error $s = \sqrt{\frac{p(1 - p)}{n}}$

For this problem, about 37% of high school seniors have vaped in the past year, hence $p = 0.37$ .

Then, the mean of the sampling distribution of sample proportions is 0.37.

For more on the Central Limit Theorem, you can check brainly.com/question/4086221

8 0

3 years ago

The question is below

Ad libitum [116K]

Answer:

£59.25

Step-by-step explanation:

Hello!

To solve this problem, we must:

Solve for the length of the fence (aka height)
Find the area of the lawn (trapezoid)
Find the number of cans needed
Find the price of all the cans

Area of a trapezoid, and why the formula works:

A trapezoid is a quadrilateral with one set of parallel sides known as bases. The other two sides are known as the legs.

To find the area of a trapezoid, we use the formula:

$\frac{B_1 + B_2}{2}* h$

This works because if we used the formula, we would be duplicating the trapezoid to form a rectangle with a side length of B1 + B2, and a height of h. Since the trapezoid is half of that, we divide by 2.

Solve for height:

The height is unknown but can be found using the Pythagorean Theorem.

The difference between the bases is the length of the bottom leg of the right triangle, and 17 is the hypotenuse.

Difference = 20 - 12 = 8

Hypotenuse = 17

8² + fence² = 17²
64 + fence² = 289
225 = fence²
fence = 15

The height is 15

Solve for area:

Now we can solve for the area.

$A = \frac{B_1 + B_2}{2} * h$
$A = \frac{12 + 20}{2} * 15$
$A = \frac{32}{2} * 15$
$A = 16 * 15 = 240$

The area is 240

Cans:

The area of the lawn is 240 square meters. Each can cover 100 square meters.

240 ÷ 100 = 2.4

Since we can't use part of a can, we round up to three whole cans.

The price of 3 cans :

3 * 19.75
59.25

£59.25

The Pythagorean Theorem:

The Pythagorean theorem is a very common geometry formula used to find the length of the hypotenuse in a right triangle, given the lengths of the two other bases.

The formula is : $a^2 + b^2 = c^2$