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3 years ago

How do you solve fire x.

Mathematics

1 answer:

makkiz [27]3 years ago

3 0

Answer:

x = 10

Step-by-step explanation:

Sum of all the angle of triangle = 180

71 + 50 + 6x - 1 = 180

71 + 50 -1 + 6x = 180

120 + 6x = 180

6x = 180 - 120

6x = 60

x = 60/6

x = 10

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Evaluate -a -8b when a = 9 and b = -3 someone please help quick!!

ollegr [7]

Answer:

Step-by-step explanation:

-a -8b = -9 + 24 = 15

4 0

3 years ago

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Question -3+13x=9.

aalyn [17]

Answer:

-3+13x=9.

13x=9+3

13x=12

x=12/13

i proved it by putting value of x in reactant side you get product .

-3+13×12/13=9

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2 years ago

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Find two consecutive positive integers such that the sum of their squares is 421 .

maria [59]

We assume the two numbers are x and (x+1)
so x^2+(x+1)^2=421
x^2+(x^2+2x+1)=421
2x^2+2x-420=0
According to the formula of quadratic
x=14 or-15
cuz we know the two numbers are integers
so x=14
therefore the other number is 15
To make sure that's correct
14^2+15^2=421

Hope that helps you!!

4 0

3 years ago

What is the exact circumference of the circle?

fredd [130]

Data:

Formula: diameter = 2*radius

Formula: (Circle length)
 $C = 2* \pi *r$

Solving: Using the data
diameter = 2*radius
20 = 2*r
2r = 20
$r = \frac{20}{2}$
$\boxed{r = 10\:ft}$

Now, replace in the circumference length formula
 $C = 2 \pi *r$
$C = 2 \pi *10$
$\boxed{\boxed{C = 20 \pi \:ft}}\end{array}}\qquad\quad\checkmark$

Answer:
The exact circumference of the circle is $20 \pi \:ft$

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3 years ago

Jairo walked 4/10 mile on Monday. He

elena-14-01-66 [18.8K]

Answer:

he walked 1 mile

Step-by-step explanation:

we find the common denominator which is 10. 3/5=6/10

6/10+4/10=10/10 or 1 mile

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3 years ago