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mafiozo [28]
4 years ago
6

Tell how to find 81-36 using mental math

Mathematics
1 answer:
iVinArrow [24]4 years ago
5 0
Just subtract the two in your head and the answer would be 45 by the way
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Find the distance between the points (-2,6) and (-1,-3)
8_murik_8 [283]

Answer:

\sqrt{82}

Step-by-step explanation:

Calculate the distance d using the distance formula

d = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2    }

with (x₁, y₁ ) = (- 2, 6) and (x₂, y₂ ) = (- 1, - 3)

d = \sqrt{(-1+2)^2+(-3-6)^2}

  = \sqrt{1^2+(-9)^2}

  = \sqrt{1+81}

  = \sqrt{82} ≈ 9.06 ( to 2 dec. places )

7 0
4 years ago
Read 2 more answers
angle c and angle d are supplementary angles. angle c is 5 times as large as angle d.what is measure of angle c?
svetlana [45]
C + d = 180°(supplementary angle)
C = 5d
5d + d = 180°
6d = 180°
d = 180°/6
d = 30°
Since C = 5d,
C = 5 x 30°
Therefore, C = 150°
Hope this helps
Please mark brainliest :):)
6 0
4 years ago
It costs a homeowner $4.00 to rent a set of hand tools, plus an additional
nexus9112 [7]

Answer:

The correct graph answer is A.

Step-by-step explanation:

Let

c ----> the total cost to rent a set of hand tools

h ----> the number of hours for the rental

we know that

The linear equation that represent the problem is equal to

---> this is the equation of the line into slope intercept form

where

the slope m is equal to

m=$2 per hour

b=$2 ---> the y-intercept (the value of c when the value of h is equal to zero)

therefore

The correct graph is A.

B. C. and D. are incorrect

6 0
3 years ago
Read 2 more answers
HELP PLEASE ASAP!!!!
Sphinxa [80]

Answer:

4.2

Step-by-step explanation:

its asymmetrical

8 0
3 years ago
Read 2 more answers
Simplify: -3(6+8q)+2(-3q+7)
Angelina_Jolie [31]
I think 18q-4 is the answer
4 0
3 years ago
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