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Ainat [17]
3 years ago
10

Which set of side lengths forms a right triangle?

Mathematics
1 answer:
pochemuha3 years ago
4 0

Awnser:

9,12,18

Step-by-step explanation:

you have to add the smallest numbers together and it has to be greater that the greatest number.

9+12= 21

21>18

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One number is 5 times another number.their sum is 90.find the numbers.​
alexgriva [62]

Step-by-step explanation:

let both unknowns be x and y

x = 5y. ......(1)

x + y = 90. ......(2)

sub eqn (1) into eqn (2)

5y + y = 90

6y = 90

y = 90/6

= 15

sub y = 15 to eqn (1)

x = 5y

x = 5 × 15

× = 75

4 0
2 years ago
Use the distributive property to simplify the expression 11 (x-5)
olga_2 [115]
The distributive property, in this case, is to multiply the number outside the parenthesis by the numbers and characters inside the parenthesis:


11 (x - 5)
11x - 55 → Simplified expression.



Hope it helped,

Happy homework/ study/ exam!

4 0
3 years ago
Use slopes to determine if the lines 4x−7y=9 and 7x+4y=5 are perpendicular.
KIM [24]

Answer:

Perpendicular.

Step-by-step explanation:

4x - 7y = 9 ---> 7y = 4x - 9 ---> y = 4/7 x - 9/7, slope= 4/7

7x + 4y = 5 ---> 4y = - 7x + 5 ---> y = - 7/4 x + 5/4, slope = - 7/4

lopes are negative-reciprocal , so these lines are perpendicular.

3 0
2 years ago
HELP PLS<br> ∠2 and ∠4 are ? angles. adjacent, supplementary, complementary, vertical
Mrrafil [7]

Answer:

They are vertical angles

Step-by-step explanation:

they are across from each other/opposites of each other

<em>vertical angles:</em> each of the pairs of opposite angles made by two intersecting lines.

4 0
3 years ago
Solve the formula for the volume of a cone for the height of the cone, h. The formula is: V = 1/3 pir^2h
Kamila [148]
80085 because this is the circumference which u multiply across surface area that gives u the volume.
7 0
2 years ago
Read 2 more answers
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