MATHEMATICS MIDDLE SCHOOL

What is the answer of 7a-6+8a

Answers

Answer 1
Answer:

Answer: 15A-6

Step-by-step explanation:

put 7a and 8a together and leave -6
Answer 2
Answer: 15A-6 add 7and 8 and get 15 and you keep 6

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A triangular flag has an area of 187.5 square inches. The base of the flag measures 25 inches. How tall is the triangular flag?

Answers

15 inches
the formula for the area of a triangle is Area=(1/2)(base)(height)
since the problem is looking for the height, we can rewrite it as
 Height=(Area)/((1/2)(Base))
then the number must be substituted in
Height=(187.5)/((1/2)(25))
and the answer is 15 inches.
To find the height, you would do the area divided by the base, or in this case,187.5 / 25 which equals 7.5 inches.  Hope this helped!

How many 1/4 teaspoon doses are in 7/8 teaspoon of medicine

Answers

The correct answer is:

3 1/2.

Explanation:

To find out how many 1/4 tsp doses are in 7/8 tsp of medicine, we divide:

7/8 ÷ 1/4

To divide fractions, flip the second fraction and multiply:

7/8 × 4/1

Multiply straight across:

7/8 × 4/1 = (7×4)/(8×1) = 28/8

To simplify this, we see how many times 8 will divide into 28. It divides evenly 3 times; this is our whole number.

After 8 goes into 28 3 times, there are 4 left over. This is the numerator of our fraction (8 is the denominator):

3 4/8 = 3 1/2

If you multiply me by 2, I become a number greater than 20 and less than 40 who am I

Answers

well there are many numbers, starting from 11 though 19.
11 times 2 = 22    12 times 2 = 24   13 times 2 = 26    14 times 2 = 28    15 times 2 = 30      16 times 2 = 32     17 times 2 = 34    18 times 2 = 36     19 times 2 = 38
so basically from any number from 11 through 19.
Hope i helped! :D

Is 8 yd greater than 288 in.

Answers

3 feet is equal to 1 yard and 3 feet is 36 inches. 288 inches divided by 36 is 8 so 8 yards is equal to 288 inches.
I believe they are the same since one yard is 36 in, so 8x36 is 288. Hope i helped :)

Is this equation an identity?

-5w − 8 = 1 − 2w

Answers

Answer:

-3w = 9

w = -3

yes, it is an identity

In triangle LMN, the measure of m_L =75°and m_M is one-half m_N. what is m_M?

Answers

Let m(<N) be x;
We have m(<M) = 1.5x;
We solve the equation: 75 + x + 1.5x = 180;
75 + 2.5x = 180;
2.5x = 105;
x = 105 ÷ 2.5;
x = 42;
Finally, m(<M) = 63 degrees;
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