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3 years ago

Please Help me Please please please

Mathematics

1 answer:

Vesna [10]3 years ago

3 0

Answer:

The answer is,

(8+2+6) ft = 16 ft

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If the porprotion of defective in the sample is less than 12%, it is reasonable to conclude that the new process is better.

Anuta_ua [19.1K]

answer: false

Step-by-step explanation: The probability of it being true is 40% and the probability of it being false is 60% so i think it would be better to go with false

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3 years ago

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3 years ago

Which equation does this image represent?

nirvana33 [79]

Given:

Image of the ellipse

To find:

The equation of the image

Solution:

The given image is a ellipse.

Center of the ellipse = (0, 0)

x-axis points are (-3, 0) and (3, 0).

y-axis points are (2, 0) and (-2, 0).

Standard form of equation of ellipse:

$$\frac{(x-h)^{2}}{a^{2}}+\frac{(y-k)^{2}}{b^{2}}=1$

where (h, k) is the center = (0,0)

a is the point on x-axis where y = 0. Hence a = 3.

b is the point on y-axis where x = 0. Hence b = 2.

Substitute this in the standard form of ellipse.

$$\frac{(x-0)^{2}}{3^{2}}+\frac{(y-0)^{2}}{2^{2}}=1$

$$\frac{x^{2}}{9}+\frac{y^{2}}{4}=1$

To make the denominator same multiply 1st term by $\frac{4}{4}$ and 2nd term by $\frac{9}{9}$ .

$$\frac{4x^{2}}{4\times9}+\frac{9y^{2}}{9\times4}=1$

$$\frac{4x^{2}}{36}+\frac{9y^{2}}{36}=1$

$$\frac{4x^{2}+9y^{2}}{36}=1$

Multiply by 36 on both sides

$$\frac{4x^{2}+9y^{2}}{36}\times 36=1\times 36$

$${4x^{2}+9y^{2}}={36}$

The equation of the image is $${4x^{2}+9y^{2}}={36}$ .

8 0

4 years ago

If the side lengths of a cube are 16 feet, what is the correct way to write the expression to represent the volume of the cube i

VMariaS [17]

The expression for finding the volume of a cube is s^3 in this case it is 16^3 or 16*16*16

8 0

3 years ago

Read 2 more answers

two friends are knitting scarves. Each scarf has 3 rectangles and 2/3 of the rectangles have stripes, If the friends are making

Natasha_Volkova [10]

Answer:

They need 30 rectangles and 20 of those rectangles will have stripes.

Step-by-step explanation:

3 x 10 = 30, (2/3) x 30 = 20

5 0

3 years ago

Please Help me Please please please ​

Please Help me Please please please