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3 years ago

Which inequality is the solution to 20+2 < Ž -8?

Mathematics

1 answer:

Maru [420]3 years ago

5 0

Answer:

the 20 +2

Step-by-step explanation:

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1. The formula for calculating the circumference<br>of a circle is

REY [17]

Answer:

C = 2 x π x r

Step-by-step explanation:

π = pi 3.14

r = radius

C = circumference

8 0

3 years ago

Please help me, What is the slope??

dangina [55]

Answer:

-0.5

Step-by-step explanation:

8 0

3 years ago

What are the solutions to the equation 2x^2 + 9x =5

Maksim231197 [3]

Answer:

$\displaystyle -5 \ and \ \frac{1}{2}$

Step-by-step explanation:

$2x^2 + 9x =5$

we have to move 5 in the other side with a different sign, to get a 2 grade ecuation

$2x^2 + 9x -5= 0$

now we know

a=2

b=9

c=-5

we have to find delta

$\boxed{\Delta=b^2-4ac} \\\\ \Delta=9^2-4\cdot2\cdot(-5)\\ \Delta=81+40 \\ \Delta=121$

and now we have to use the formula to find the root square

$\displaystyle \boxed{ X_{1,2}=\frac{-b\pm\sqrt{\Delta} }{2a} }$

$\displaystyle X_1=\frac{-b-\sqrt{\Delta} }{2a} =\frac{-9-11}{2\cdot2}=\frac{-20}{4} =-5$

$\displaystyle X_2=\frac{-b+\sqrt{\Delta} }{2a} =\frac{-9+\sqrt{121} }{2\cdot4} =\frac{-9+11}{4} =\frac{2}{4} =\frac{1}{2}$

8 0

3 years ago

Read 2 more answers

The product of three and a number is x increased by seven

Delicious77 [7]

$3 \times (x + 7)$

3 0

3 years ago

Help! how do i find the slope and the y-intercept? please help

Talja [164]

Answer:

1 is the - Slope

4 is the y-intercept

Step-by-step explanation:

To find slope, you have to use two points and use the formula $\frac{y2-y1}{x2-x1}$

Here one point is (2,6), and other point is (4,8)

Substitute to get $\frac{2}{2}$ which equals 1.

To find y-intercept, x should be 0. If x is 0 then why in this case would be 4

8 0

3 years ago