MATHEMATICS HIGH SCHOOL

From the set {1, 3, 5}, use substitution to determine which value of x makes the equation true. 20 - 2x = 10
5
1
3
none of these

Answers

Answer 1
Answer: {1,3,5}
ie, sub 1, 3 and 5 for x and see which one is true

20-2(1)=10
20-2=10
18=10
false

20-2(3)=10
20-6=10
14=10
false

20-2(5)=10
20-10=10
10=10

true

answer is 5

Related Questions

Abcd is a rectangle. Find the length of each diagonal. .AC= 3y/5 BD=3y-4
Two equations are given below:a – 3b = 4 a = b – 2 What is the solution to the set of equations in the form (a, b)? (5 points) (–2, –2) (–3, –1) (–9, –7) (–5, –3)
Can someone help ???​
The beginning inventory at cost is $80,000.00 and at retail is $100,000.00. Purchases at cost are $160,000.00 and the retail value is $200,000.00. Net sales are $250,000.00. The ending inventory at cost isA. $240,000B. $50,000.00C. $40,000D. $192,000
Please solve the combined inequality and describe the graph. 3x-6 > -3 and 3x-6 < 12

Solving equations. find value of m2m - 1/2 = m/7 + m/2

here is a picture of the previous question

Answers

2m-\frac { 1 }{ 2 } =\frac { m }{ 7 } +\frac { m }{ 2 } \n \n \frac { 1 }{ m } \left( 2m-\frac { 1 }{ 2 } \right) =\frac { 1 }{ m } \left( \frac { m }{ 7 } +\frac { m }{ 2 } \right)

\n \n \frac { 2m }{ m } -\frac { 1 }{ 2m } =\frac { m }{ 7m } +\frac { m }{ 2m } \n \n 2-\frac { 1 }{ 2m } =\frac { 1 }{ 7 } +\frac { 1 }{ 2 } \n \n 2-\frac { 1 }{ 7 } -\frac { 1 }{ 2 } =\frac { 1 }{ 2m }

\n \n \frac { 28 }{ 14 } -\frac { 2 }{ 14 } -\frac { 7 }{ 14 } =\frac { 1 }{ 2m } \n \n \frac { 19 }{ 14 } =\frac { 1 }{ 2m } \n \n { \left( 2m \right) }^( -1 )={ \left( \frac { 14 }{ 19 } \right) }^( -1 )

\n \n 2m=\frac { 14 }{ 19 } \n \n \frac { 1 }{ 2 } \cdot 2m=\frac { 14 }{ 19 } \cdot \frac { 1 }{ 2 } \n \n m=\frac { 14 }{ 38 } =\frac { 7 }{ 19 }

You added 3 3/4 cups of flour, 1 1/4 cups of oil, and 2 2/4 cups of water to a bowl for a recipe. How many cups did you combine in total?

Answers

3 3/4 + 1 1/4 + 2 2/4 

3/4 + 1/4 + 2/4 = 1 1/2

3 + 1 + 2 + 1 1/2 = 7 1/2 cups total

6.51875 rounded to the nearest tenth

Answers

the answer is 6.5 because the number on the left of 5 is less than 5 which means we don't round up

Let e = 15. What is the value of 2e?

A.
13

B.
17

C.
30

D.
215

Answers

2e = 2 X (15)

2 X 15 = 30

Answer: C. 30

What is the common difference between the elements of the arithmetic sequence below? –18, –22.5, –27, –31.5, –36

Answers

Answer
Common difference = -4.5

Explanation.
An arithmetic sequence is a sequence in which the next term is found by adding a constant to the current term. This constant is called the common difference.
If a, b, c, d, e, ….is an arithmetic sequence, then the common difference will be,
Common difference = b-a=c-b=d-c=e-d…..
Now the question above common difference is;
Common difference = (-22.5)-(-14)=-4.5 

Answer:

-4.5

confirmed correct on edge

Whats the value of x? 2−(3x−4)=2x−9

Answers

Answer:

x=3

Step-by-step explanation:

Use pemdas!

First use distributive property to get rid of the parenthesis, by multiplying 2 by 3x and -4. Then combine like terms and use inverse operations to simplify each side until you get it down to just x! Hope this helped! :)
Other Questions
Are the ratios 1:2 and 17:18 equivalent
A piece of ribbon 4 yards long is used to make bows requiring 15 inches of ribbon for each. What is the maximum number of bows that can be made?
The value of a boat, in dollars, x years after its purchase is represented by the function.f(x)=10,000(0.73)^x What is the average decrease in value per year between years 1 and 2?
What is the height of a triangular plate if its area is 1225 square centimeters and the length of its base is 35 centimeters, and how can you calculate this height using the formula for the area of a triangle?