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3 years ago

Find the surface area of a grapefruit with a circumference of 14 cm. Round your answer to the nearest whole number.

Mathematics

2 answers:

aleksklad [387]3 years ago

7 0

I just took the test the answer is 62 cm ^2

Maru [420]3 years ago

3 0

The answer is 62 cm^2!

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What are the coordinates of the y-intercept of the line y = -2x + 7?

Mashcka [7]

Answer:

C. (0, 7)

Step-by-step explanation:

Just use a graphing calculator.

8 0

3 years ago

Read 2 more answers

What is the length of a line segment with endpoints of 19 and –39

Vlad [161]

19-(-39)
19+39=58
is solution as
the two end points are 19 and -39 we should subtract then we get the distance between

6 0

3 years ago

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Find the equation for the plane that contains the line x=−1+3t , y=1+2t, z=2+4t and is perpendicular to the plane containing the

Ivan

Let $L$ be the line given by the vector equation

$(-1,1,2) + \lambda(3,2,4) \ , \lambda \in \mathbb{R}$ .

First, we use the director vectors of the lines L1 and L2 to get the

vector equation of the plane containing them, which we denote by $\Pi_1$ . This is,

$\\\\\Pi_1 : (1,-1,5) + \alpha (2,-1,6) + \beta (1,1,-3) \ , \alpha, \beta \in \mathbb{R}\\\\\\$

We observe that $\vec{N} = (2,-1,6)\times(1,1,-3) = (-3,12,3) \ne (0,0,0)$ . Therefore, the vector equation of $\Pi_1$ defines a plane and $\vec{N}$ is a normal vector to $\Pi_1.$

Finally, the vector equation for the wanted plane, which we denote by $\Pi$ , is

$\Pi : (-1,1,2) + r(3,2,4) + s(-3,12,3), r,s \in \mathbb{R} \ .$

Thus, if $s = 0$ , then $L \subset \Pi$ and since $\vec{N}$ is parallel to $\Pi$ , then it is perpendicular to $\Pi_1$ .

8 0

3 years ago

Josue went to his favorite donut shop with his friend. The donut shop was having a special. A dozen donuts was selling $11.76. H

yan [13]

Answer:

0.98 cents

Step-by-step explanation:

All you do to solve this is ou do 11.76 divided by 12

11.76 divided by 12 is actually just 98 cents (0.98)

8 0

2 years ago

Solve for x<br>-2x+2-7x= -70

Lostsunrise [7]

Answer:

x=8

Step-by-step explanation:

-2x+2-7x=-70

Minus two from each side.

-2x-7x=-72

Combine like terms.

-9x=-72

Divide -9 from each side.

x=8

7 0

3 years ago