MATHEMATICS MIDDLE SCHOOL

What is a correct first step for solving this equation x+7=2x+5-4x

Answers

Answer 1

Answer:

Answer:

2x+4x=6x

Step-by-step explanation:

Answer 2

Answer:

Answer:

Combing like terms.

Step-by-step explanation:

If there are like terms with a variable, you should combine them to make the problem more easier.

$2x-4x = -2x$

$x + 7=-2x+5$

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Answers

Answer:

radius: DF (it is a line segment drawn from the center of the circle to any point on the circle)

diameter: AC ( it is a straight line passing through the center of the circle and intersecting the circle at two distinct points)

chord : AB ( it is a line segment joining any two points on the circle)

Answer:

Step-by-step explanation:

radii- A F / D F / C F

diameter- E B / A C

chord- A B

If 50 is 20% of a value what is that value

Answers

The answer would be 200 because it takes 20% 4x to get to 100% so 50x4=200

The value would be 250.

there are 52 weeks in 1 year. In the space at the right, make a table and write a function rule relating the number of weeks to the number of years for 1,2,3, and n years. Then find Hana's age in weeks if she is 11 years old.

Answers

Given:
52 weeks in a year
Hana's age: 11 years

Find her age in weeks.

f(x) = 52x ; where x is the number of years.

f(11) = 52(11)
f(11) = 572 weeks

Hana is 572 weeks old.

Answer:

Step-by-step explanation:

What is the probability that a month picked at random will have 31 days? A.5/12
B.4/12
C.7/12
D.8/12

Answers

There are 12 months. 7 of them have 31 days (Jan, Mar, May, July, Aug, Oct, Dec). 4 of them have 30 days (Apr, June, Sep, Nov). 1 of them has 28 or 29 days (Feb). Based on this knowledge, the probability of picking a month with 31 days at random is C, 7/12.

7 times as much as sum of 1/3 and 4/5

Answers

So the formula is
7*(1/3+1/5) = x

First find the common denominator of the fractions. In this case the common denominator of 3 and 5 is 15 so we must convert them to 15ths. To do that we divide 15 by the denominator and take that answer and multiply the numerator by it.

So for 1/3 we take 15/3(denominator) = 5 and multiply the numerator (1) by it

5 * 1 = 5 so 1/3 converts to 5/15

Do the same for 1/5 we take 15/5 = 3 and multiply the numerator (4) by it

3*4 = 12 so 4/5 converts to 12/15

Now we add 5/15 and 12/15 = 17/15 so we have our formula now to

7*17/15

We make seven a fraction 7/1 and multiply across 7*17 = 119 and 15 * 1 = 15

We have 119/15 which when we divide and get 7 14/15 as your answer

find a common denominator aka 15
so 5/15 and 12/15
= 17/15 times 7/1
119/15

~~~15 POINTS~~~
Please help me with this question.

Answers

Divide the actual building's measurements by the replica's measurements.

$(400)/(20)=20\n\n(320)/(16)=20$

The measurements of the actual building are divided by 20 not 12.
The crew member's calculation is incorrect.

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