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3 years ago

HELP!!!!! WILL MARK BRAINLEST IF CORRECT

Mathematics

1 answer:

bezimeni [28]3 years ago

5 0

What is the question?

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Which value is a solution of the inequality -x + 5 < 7? (SELECT ALL THAT\ APPLY)

Varvara68 [4.7K]

Answer:

5,7,-1

Step-by-step explanation:

5) -5+5<7=0<7 TRUE

7)-7+5<7=--2<7 TRUE

-1)-(-1)+5<7=6<7 TRUE

-3)-(-3)+5<7=8<7 FALSE

-2)-(-2)+5<7=7<7 FALSE

8 0

3 years ago

Solve for x in the equation

Viktor [21]

Answer:

${x}^{2} + 2x + 1 = 17 \\ {x}^{2} + 2x - 16 = 0 \\ x = \frac{ - b± \sqrt{ {b}^{2} - 4ac} }{2a} \\ x = \frac{ - 2± \sqrt{68} }{2} \\ x = \frac{ - 2±2 \sqrt{17} }{2 } \\ x = - 1± \sqrt{17}$

5 0

3 years ago

<img src="https://tex.z-dn.net/?f=-2%283%20-%202x%29%20%3D%20-6x%20%2B%208%28x%20%2B%202%29" id="TexFormula1" title="-2(3 - 2x)

vovikov84 [41]

Answer:

$\boxed{ \bold{ \huge{ \boxed{ \sf{x = 11}}}}}$

Step-by-step explanation:

$\sf{ - 2(3 - 2x) = - 6x + 8(x + 2)}$

Distribute -2 through the parentheses

Similarly, Distribute 8 through the parentheses

$\dashrightarrow{ \sf{ - 6 + 4x = - 6x + 8x + 16}}$

Collect like terms

$\dashrightarrow{ \sf{ - 6 + 4x = 2x + 16}}$

Move 2x to left hand side and change it's sign

Similarly, move 6 to right hand side and change it's sign

$\dashrightarrow{ \sf{4x - 2x = 16 + 6}}$

Collect like terms

$\dashrightarrow{ \sf{2x = 16 + 6}}$

Add the numbers : 16 and 6

$\dashrightarrow{ \sf{2x = 22}}$

Divide both sides by 2

$\dashrightarrow{ \sf{ \frac{2x}{2} = \frac{22}{2} }}$

Calculate

$\dashrightarrow{ \sf{x = 11}}$

Hope I helped!

Best regards! :D

5 0

3 years ago

Heyyy pls help w this ( used all my points )

Katyanochek1 [597]

Answer:
1) 20
2) -3
3) x+18y
4) x=-18

8 0

3 years ago

Read 2 more answers

Inverse operationsare pairs of mathematical manipulations in which one operation undoes the action of the other—for example, add

Valentin [98]

The answer is you are looking for is 0.36

3 0

3 years ago

Read 2 more answers