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irina [24]
3 years ago
9

Variations problem Help please

Mathematics
1 answer:
Zolol [24]3 years ago
6 0

Answer:

9

Step-by-step explanation:

12-5=7 so...

2+7 = 9

y = 9

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The diameter of a circle is 20 m. Find its area in terms of π
Yakvenalex [24]

Answer:

100π m^2

Step-by-step explanation:

Given data

Diameter= 20m

Radius= 10m

The expression for the  area is

Area= πr^2

Area= π*10^2

Area= π*100

Area= 100π m^2

Hence the area is 100π m^2

4 0
3 years ago
Image 1<br> ____________________________________________<br> image 2
Anit [1.1K]
Cosine of angle F = adjacent side / hypotenuse
Cosine of angle F = 60/61 Option C

In image 2, we have to find out the adjacent side
adjacent side =√ 41² - 40² = √81 = 9

Cosine of angle X = 9/41
Option C


4 0
3 years ago
swati won a Computer game that she played with matt. The sum of the scores was 754. The difference of there scores was 176. How
klio [65]

<u>Answer:</u>

Swati - 465 , Matt - 289

<u>Explanation:</u>

Let Swati's score be x and Matt's score be y.

Since Swati won the game her score is obviously higher.

We are given the sum and difference between their scores which we can write as , x + y = 754 and x - y = 176.

Solving these two equations by adding them we get 2x = 930 so x = 465. Substituting x in x - y = 176 we get y = 289

Thus Swati scored 465 points and Matt scored 289 points.

5 0
3 years ago
Dennis got 85 percent of the questions on the math test correct, which was out of 40. what was his actual mark?​
makkiz [27]

Answer:

34/40

Step-by-step explanation:

85/100 cross multiply x/40

100x/100=3400/100

x=3400/100

3400/100=34

x=34

Picture included

(Sorry about my handwriting)

Hope this helps!! :)

Stay safe and have a wonderful day/night!!!!!

Brainliest?!?!

4 0
3 years ago
Janice's mother gave her ten-dollar bill to buy five pounds each bananas and apples at the grocery store. When she got there she
lakkis [162]

Buying apples and bananas with $10


5 pounds of bananas so

5 x .80 = $4

5 pounds of apples so

5 x 1.40 = $7


$7 + $4 = $11

she only has $10

$11 - $10 =  - 1,00


so no. she will not recieve any change because she doesnt havew enough money

6 0
3 years ago
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