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Anton [14]
3 years ago
5

How do you solve this? ASAP please help me. a^2+2.1^2=2.9

Mathematics
1 answer:
ss7ja [257]3 years ago
3 0
Convert decimal to fraction
a^2+(21/10)^2=2.9
Use exponent rules
a^2+441/100=2.9
Move constant to the right
a^2=2.9-441/100
Calculate
a^2=-151/100
This equation has no solution.
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Hello my fellow smart people I think the answer is 4 but I wanna be sure your supposed to find the mean
dedylja [7]

Answer:

You are correct! The answer is 4

Step-by-step explanation:

Add up all the wands and divide by number of fairies in Fairyland

5+3+3+5 = 16

16/4 = 4

3 0
4 years ago
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3 groups of 5 how<br> Many are there in total
Vadim26 [7]

It's 15 because

3 groups and 5 people in each group

and becomes 15

I HOPE THIS HELPS

7 0
3 years ago
If The area of a triangle is 84 square meters. What is the base if the height is 12 meters?
Delicious77 [7]

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14

Step-by-step explanation:

5 0
3 years ago
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A circle has an 18-inch radius and a shaded sector with a central angle of 50°. Determine the area of the shaded sector.
Makovka662 [10]

Answer:

Area of shaded region is 141.3 square inches

Step-by-step explanation:

It is given that,

A circle has an 18-inch radius and a shaded sector with a central angle of 50°

Area of circle = πr²

<u>To find the area of circle</u>

Area of circle = πr² = 3.14*18²  = 3.14 * 18 * 18

Area =  1017.36 square inches

<u>To find the part of shaded region</u>

central angle of shaded region is 50°.

part of sector = 50/360 = 5/36

<u>To find the area of shaded region</u>

area of shaded region is 5/36th of total area of circle

Area of shaded region = 5/36(1017.36) = 141.3 square inches

3 0
3 years ago
4. Sherman hopes to get at least a 90 average on his science tests. He has one more test
Alinara [238K]

Answer:

79+94+91+92+test5)/5=90

The lowest score have to be 94

Step-by-step explanation:

Our goal is gona be to have an average of 90, it can be higher but we are going to use this.

For average the equation is

(test1+test2+test3+test4+test5)/5=average

We know the result for the first 4 tests

Test 1=79

Test 2=94

Test 3=91

Test 4=92

But we dont know test 5

(79+94+91+92+test5)/5=average

Our goal for the average is 90

(79+94+91+92+test5)/5=90

79+94+91+92+test5=90*5

test5=450-79-94-91-92

Test5=94

8 0
3 years ago
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