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3 years ago

What is a simpler form of the expression? Show all steps -3(-4y+3)+7y

Mathematics

2 answers:

Igoryamba3 years ago

7 0

Answer:

19y-9

Step-by-step explanation:

apply distributive property

-3(-4y)-3 x 3 + 7y

12y - 3 x 3 + 7y

12y - 9 + 7y

add 12y to 7y

19y-9

Alona [7]3 years ago

5 0

-3(-4y + 3) + 7y Distribute -3 into (-4y + 3)

(-3)(-4y) + (-3)3 + 7y (two negative signs cancel each other out and become positive)

12y - 9 + 7y Combine like terms(terms that have the same variable and power/exponent), which are only 12y and 7y because the have the same variable of y and an exponent of 1

19y - 9 (this is as far as you can simplify)

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A net for which three-dimensional figure would always have 6 congruent rectangular regions

Crank

If I am correct it should just be a cube

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2 years ago

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Lerok [7]

Answer:

Step-by-step explanation:

3√1000 = 10

because 10 • 10 • 10 = 1000

3√8 = 2

because 2 • 2 • 2 = 8

10+2 = 12

It's not plus or minus because it's a cube root rather than a square root.

5 0

3 years ago

What is the solution to the equation = 25? x = 5 x = 10 x = 25 x = 125

Brilliant_brown [7]

Answer:

x=125

Step-by-step explanation:

To solve we must find a number that when divided by 5 equals 25.

To do this we can either...

Take each answer choice and plug in the value into the x spot and see if it works...

5/5=25 WRONG

10/5=25 WRONG

25/5=25 WRONG

125/5=25 CORRECT!

ORRR... we can set the equation so that the x is alone on one side.

To do this we can multiply both sides by 5

$\frac{x}{5}$ =25 ---> x=25×5

x=125

7 0

2 years ago

An auto repair shop charges $36 per hour, plus the cost of replaced parts. Which of the following expressions can be used to cal

aivan3 [116]

Answer:

44h

Step-by-step explanation:

Auto repair shop Charge - $36

Replaced Parts - $8

Number of Hours - h

Formula to find the total cost

(Auto Repair Shop Charge + Replaced Parts) x Number of Hours

= (36 + 8) x h

= 44 x h

= 44h

3 0

2 years ago

zhenek [66]

Answer:

Step-by-step explanation:

length = x +x + 2 = 2x + 2

Width = 2+ x

Area of rectangle = length *width

(x +2)(2x + 2) = 110

Use FOIL method

x*2x + x*2 + 2*2x + 2*2 = 110

2x² + 2x + 4x + 4 - 110 = 0 {Combine like terms}

2x² +6x - 106 = 0

a = 2 ; b = 6 ; c = -106

b² - 4ac = 6² - 4*2*(-106)

= 36 + 848

= 884

$\sqrt{b^{2}-4ac}=\sqrt{884}= 29.73$

$x =\dfrac{-b+\sqrt{b^{2}-4ac}}{2a} \ ; \ x==\dfrac{-b-\sqrt{b^{2}-4ac}}{2a}\\\\x = \dfrac{-6+29.73}{2*2} \ ; \ x =\dfrac{-6-29.73}{2*2} \ this \ is \ ignored \ as \ it \ is \ negative\\\\x=\dfrac{23.73}{4};$

x = 5.93 m

5 0

3 years ago