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2 years ago

Please help no one is helping me Extra points if helping me correctly

Mathematics

1 answer:

Verdich [7]2 years ago

7 0

Answer:

The simplified equivalent expressions for given expression as below:

A) 2x+10x=12x

B) -4(3x-10)+5(2-6x)=-42x+50

C) 2(x-4)+x=3x-8

D) -3-7(3-4x)+8x=36x-24

Step-by-step explanation:

A) Given expression is 2x+10x

To simplify the expression using distributive property a(x+y)=ax+ay

2x+10x=12x (adding the terms)

B) Given expression is -4(3x-10)+5(2-6x)

To simplify the expression using distributive property a(x+y)=ax+ay

-4(3x-10)+5(2-6x)=-12x+40+10-30x

-4(3x-10)+5(2-6x)=-42x+50 (adding the like terms)

C) Given expression is 2(x-4)+x

To simplify the expression using distributive property a(x+y)=ax+ay

2(x-4)+x=2x-8+x (adding the like terms)

2(x-4)+x=3x-8

D) Given expression is -3-7(3-4x)+8x

To simplify the expression using distributive property a(x+y)=ax+ay

-3-7(3-4x)+8x=-3-21+28x+8x (adding the like terms)

-3-7(3-4x)+8x=-24+36x

-3-7(3-4x)+8x=36x-24

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If a couple were planning to have three children, the sample space summarizing the gender outcomes would be: bbb, bbg, bgb,

MaRussiya [10]

There are two choices for each child: overweight (o) or underweight (u). So if the first child is o the next can be o or u. If the first is u the second can be o or u. This gives four possibilities. Here the first child is the letter noted first and the second is the one listed second:
OO
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There are 4 outcomes and if each is equally likely then the probability of each is 1/4. Thus the probability of UU is 1/4

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3 years ago

If the perimeter of a square is 20, find the length of a diagonal

avanturin [10]

Answer:

7.07

Step-by-step explanation:

<h2><u>Length</u></h2>

a square has equal length on each side

hence is the perimeter is 20 it means that :

each side is 20/4 = 5

we can make a diagonal line which create 3 right angled triangles

2 sides of the triangle are 5 , this is the base and the height

to find the length we can make use of the Pythagoras theorem

c^2 = a^2 + b^2

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a and b are the opposite and adjacent

hence :

c^2 = 5 ^2 + 5^2

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c = 7.071

to 3sf

<h3><u>diagonal length = 7.07</u></h3>

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3 years ago

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3 years ago

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Masteriza [31]

Answer:

≤ Note: without the equal

Step-by-step:

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3 years ago

Read 2 more answers

Your tea her will grade your response 4-8 to ensure you receive proper credit

svlad2 [7]

Answer:

k = 73

Step-by-step explanation:

The sum of all the angles in a triangle is 180 degrees.

62 ° + k + 45 ° = 180

Solve the equation for k

Add 62 ° and 45 °

k + 107 = 180

Move all terms not containing C to the right side of the equation.

Subtract 107 from both sides of the equation.

k = 180 − 107

Subtract

k = 73

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3 years ago