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liberstina [14]
3 years ago
9

I will mark Brainliest

Mathematics
2 answers:
gladu [14]3 years ago
8 0
I think its  A = 4π(7)2
valentinak56 [21]3 years ago
8 0
I think that the answer is the last one, 4 pi (7)2 because if the radius of the sphere is 7 feet than this equation works the best as 4 * pi * 7^2 = 49*4*pi=196 pi= 615.75ft^2 or 615.75 ft squared.
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(2x−6)+4(x−3) help finding the sum pls
aleksandr82 [10.1K]

Answer:

6x-18

Step-by-step explanation:

(2x-6)+4x-12

6x-18

4 0
3 years ago
Please be quick, i need this as soon as possible!
dalvyx [7]

Answer:

I’m pretty sure the answer is a

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Jonas is doing a science experiment with his class. The teacher has 21 fluid ounce of pond water to share equally with 10 pairs
tiny-mole [99]
2.1 ounces because you divide 21 by 10 which equals 2.1

3 0
3 years ago
What is the perimeter of the triangle in units of the triangle formed by the points (-3,1), (-3,5), and (4,1)?
ira [324]

let's say

A(-3,1) B(-3,5) C(4,1)

we need to find the perimeter of ABC for that we find each of the sides

AB BC and AC

there is a formula to find the distance between 2 poins

let's say that a point has the structure A(x1,y1) where x=-3 and y=1 and B(x2,y2) where x2=-3 and y2=5

AB=\sqrt{(x2-x1)^2+(y2-y1)^2}

AB=\sqrt{(-3+3)^2+(5-1)^2}

AB=\sqrt{0^2+4^2}

AB=4

we do the same thing for AC and BC

AC=\sqrt{(4+3)^2+(1-1)^2}

AC=\sqrt{7^2+0^2}

AC=7

BC=\sqrt{(4+3)^2+(1-5)^2}

BC=\sqrt{7^2+(-4)^2}

BC=\sqrt{49+16}

BC=\sqrt{65}

The perimeter is equal to the sum of the sides

P=AB+AC+BC=4+7+\sqrt{65}=11+\sqrt{65}

8 0
2 years ago
Christine runs 10 miles in 75 minutes. At the same rate, how many miles would she ru<br> I miles
Len [333]

Answer:

\frac{46}{5}  miles  [or, 9.2 miles]

Step-by-step explanation:

<u>Complete Question:</u>

Christine runs 10 miles in 75 minutes. At the same rate, how many miles would she ru n in 69 minutes?

<u>Solution:</u>

We need to find the unit rate first and then find our answer. To get unit rate, we need to know the number of miles she runs in "1 minute". So, we will divide number of miles by number of minutes, that is given. Hence:

\frac{10}{75}=\frac{2}{15}

That means in 1 minute, Christine runs 2/15th of a mile.

Now, we want to know how many miles she will run in 69 minutes. We simply multiply unit rate (2/15) by the number of minutes (which is 69). Thus we have:

\frac{2}{15}*69=\frac{2*23}{5}=\frac{46}{5}

In decimal, doing division, that is 9.2 miles

7 0
3 years ago
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