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Bad White [126]
3 years ago
9

Dose anyone know how to do these problems

Mathematics
1 answer:
zimovet [89]3 years ago
4 0

Answer:

1. 14

2. 20

3. 12

4. -400

5. 6

6. 21

7. 11

8. 16

9. 40

10. 49

11. 12

12. IDK

Step-by-step explanation:

1. 16-2=14

2. 16+4=20

3. 6 X 2 = 12

4. -400/-10 (negative divided by a negative equals a positive) = 40

5. 6 X 6 = 36

6. 16+5=21

7. 23-12=11

8. 4 X 16 = 64

9. 36-16=20, 20 X 2 = 40

10. 400-8=392, 392/8= 49

11. 912-612=300, 300/25 = 12

12. Sorry too confusing.

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Two sides of a triangle are equal in length and double the length of the shortest side. The perimeter of the triangle is 36 inch
chubhunter [2.5K]

Answer:

Two equal sides = 14.4 inches each

Shortest side = 7.2 inches

Step-by-step explanation:

a + b + c = 36

a = b

a = 2c

then:

c = a/2

a + a + a/2 = 36

2a + a/2 = 36

4a/2 + a/2 = 36

5a/2 = 36

a = 2*36/5

a = 72/5

a = 14.4

a = 2c

14.4 = 2*c

c = 14.4/2

c = 7.2

a = b

b = 14.4

Check:

14.4 + 14.4 + 7.2 = 36

3 0
3 years ago
reasoning: if you know that 9 x 20 = 180, how can you use this to find 9 x 24? explain your strategy.
Lostsunrise [7]
9 * 20 = 180

24 has 4 more than that, so multiply 9 to 4 and add it to 180.

9 * 4 = 36

180 + 36 = 216

So 9 * 24 = 216
4 0
2 years ago
Read 2 more answers
Please help asap !!!!!!
alukav5142 [94]

Answer:

A.

Step-by-step explanation:

\sqrt{10} *\sqrt{8}\\   \sqrt{10}*\sqrt{2*4}\\\sqrt{10}*2\sqrt{2}\\2\sqrt{2*10}\\2\sqrt{20}\\ 2\sqrt{4*5} \\4\sqrt{5}

4 0
3 years ago
Factor completely 81m^2-169
wel
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7 0
3 years ago
The larger of two numbers is 7 less than twice the
Flauer [41]

Answer:

The two numbers are 29 and 18

Step-by-step explanation:

Let x and y be the two numbers

x = 2y-7

x+y = 47

We have two equations and 2 unknowns

Substituting the first equation into the second equation

2y-7+y = 47

Combine like terms

3y -7 = 47

3y-7+7 = 47+7

3y = 54

Divide by 3

3y/3 = 54/3

y = 18

Now find x

x = 2y-7

x = 2*18 -7

x = 36-7

x = 29

The two numbers are 29 and 18

4 0
2 years ago
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