MATHEMATICS MIDDLE SCHOOL

Which of the following sets of lengths can be used to form the sides of a triangle? Explain your reasoning.5 inches, 18 inches, 20 inches

3 inches, 16 inches, 22 inches

4 inches, 5 inches, 9 inches

Answers

Answer 1
Answer:

Answer:A can be use to form a triangle.

Step-by-step explanation:

a+b>C

5+18 >20

23>20

SO this is a triangle since if you add A and B together it is greater than C.

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What times 5 equals 70?

The measure of one angle of an octagon is two times smaller that of the other seven angles. What is the measure of each angle?pls help the answer is (not 77 degrees and 144 degrees)

Answers

Answer:

7 of the angles measure 144 degrees each and one angle measures 72 degrees

Step-by-step explanation:

Let

x -----> represent the measures of the seven same-size angles,

x/2 ----> represent the measure of the one that is "two times smaller."

we know that

The sum of internal angles of a polygon can be calculated as:

S=180^o(n-2)

where

n is the number of sides of the polygon

In this case

n=8 (octagon)

substitute

S=180^o(8-2)=1,080^o

so

The linear equation that represent this problem is

(x)/(2)+7x=1,080

solve for x

(15x)/(2)=1,080\n\n15x=2,160\n\nx=144^o

so

(x)/(2)=72^o

therefore

7 of the angles measure 144 degrees each and one angle measures 72 degrees

What is 2 and 928 ten-thousandths as a decimal?

Answers

I think this is the correct answer
2+ 928    = 2 + 0.0928 = 2.0928
    ---------
    10000
I hope i helped you :-)

Evaluate.

90 • 4 – 14 ÷ 2 + 10² ÷ 5 • 2

Answers

90 x 4 - 14 / 2 + 10^2 / 5 x 2
For this expression, you would use the method PEMDAS.
(Parentheses Exponents Multiplication Division Addition Subtraction)
The first one available in this expression is Exponents (10^2=100)
90 x 4 - 14 / 2 + 100 / 5 x 2
Then Multiplication (90 x 4 = 360 and 5 x 2= 10)
360 - 14 / 2 + 100 / 10
Next is Division (14 / 2 = 7 and 100 / 10 = 10)
360 - 7 + 10
Now Addition or Subtraction (whichever one is first from left to right)
353 + 10
90 x 4 - 14 / 2 + 10^2 / 5 x 2 = 363

Given triangle JKL : triangle XYZ, find the scale factor.

Answers

Answer:

2/3

Step-by-step explanation:

i don't know how to explain it, but this is the answer :) good luck

Describe algebraically the relationship between x1 and x2

Answers

x2 is double the amount of x1

(Simplify the answer if possible)

5/7-2/5=

Answers

If you would like to calculate 5/7 - 2/5, you can do this using the following steps:

5/7 - 2/5 = 25/35 - 14/35 = (25 - 14) / 35 = 11/35

The correct result would be 11/35.
the answer is 11/35
hope i helped
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