MATHEMATICS MIDDLE SCHOOL

The value of x in 3(x+5)=12

Answers

Answer 1

Answer:

Answer:

x = -1

Step-by-step explanation:

3(x+5)=12

Divide each side by 3

3/3(x+5)=12/3

x+5 = 4

Subtract 5 from each side

x+5-5 = 4-5

x = -1

Answer 2

Answer:

Answer:

x=-1

Step-by-step explanation:

3(x+5)=12

Step 1: Simplify both sides of the equation.

3(x+5)=12

(3)(x)+(3)(5)=12(Distribute)

3x+15=12

Step 2: Subtract 15 from both sides.

3x+15−15=12−15

3x=−3

Step 3: Divide both sides by 3.

−3

x=−1

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Can you please help find z?

Answers

Answer:

the angle for z° is 96°

Step-by-step explanation:

Since we already know 2 of the angles and that y=18° because both of the lines opposed to y are straight, so subtract all of what we know: 360-(64+18+18)=260°. x also has straight lines with the 64°, so subtract another 64°, then the equation will be 360°-(64+64+18+18), so z should equal 196, but there are 2 z angles, so divide it by 2 and the answer should be z°=96°

the base price to rent a car is $60, and there is an additional cost of $2 per mile. the base price to rent a truck is $40, and their is an additional cost of $3 per mile. At how many miles will the cost be the same to rent either vehicle

Answers

Answer: At 20 miles.

Step-by-step explanation:

60 + 2m = 40 + 3m

-40

20 + 2m = 3m

-2m

20 = m

$35 is what percent of $175

Answers

the answer to your question is 20%

$35 is 20% of $175

~ Aquamarime:)

PLZ HELP Kim wants to know how many families in her small neighborhood of 70 homes would participate in a neighborhood sports event. She put all the addresses in a bag and drew a random sample of 35 addresses. She then asked those families if they would participate in the sports event. She found that 15% of the families would participate in the event. She claims that 15% of the neighborhood families would be expected to participate in the sports event. Is this a valid inference? A. Yes, this is a valid inference because she took a random sample of the neighborhood
B. Yes, this is a valid inference because the 35 families speak for the whole neighborhood
C. No, this is not a valid inference because she asked only 35 families
D. No, this is not a valid inference because she did not take a random sample of the neighborhood

Answers

C. No because she only asked 35 families

the diameter of the earth at the equator is about 8,000 mi. Based on this figure ,how far is it exactly around the earth

Answers

basically, we want to find the circumfernece of the earth
C=pid
d=diameter
pi=pi (aprox pi=3.1419256)
C=3.14159256*8000
C=25132.74048 feet

C = 2 π r
C = 8,000 π or 25,133 miles

What is the slope between the points (3, 5) and (-2, -4)?A) 9/5
B) 1
C) 5/9
D) -5/9

Answers

The slope is 9/5
The formula is y-y1/x-x1

Using the slope formula I have found that the slope is m= 9/5 which is option A.

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