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2 years ago

Which expression is equivalent to 18 - 7? Apex

Mathematics

1 answer:

Dominik [7]2 years ago

7 0

Answer: See explanation

Step-by-step explanation:

Your question isn't complete but let me help out.

To get an expression that is equivalent to 18 - 7, you will have to know the value of 18-7 first. This will be:

= 18 - 7

= 11

Since we know that 18-7 = 11, then from the options that you're given, you'll find the one that is also equal to 12 which will be the answer.

For example, let's say you're given the options of a. 20 - 6 and b. 3 + 19 - 11.

20 - 6 = 14. This means that it isn't an equivalent of 18-7.

3+19-11 = 11. So, this is an equivalent of 18-7.

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A car travels 172 miles using 7 gallons of gas. At that rate, how far can the car traval using 42 gallons of gas?

Semmy [17]

Answer:

1.1032

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Step-by-step explanation:

7 0

2 years ago

Which ordered pair is generated from the equation shown below? y = 2x + 4 A. (1, 6) B. (1, 2) C. (3, 6) D. (8, 16)

USPshnik [31]

Answer:

The ordered pair generated from the equation is (1, 6).

Step-by-step explanation:

An ordered pair is a pair of numbers, representing two variables, in a specific order. For instance, (x, y) = (1, 2) here x = 1 and y = 2.

The equation provided is:

$y=2x+4$

Check for all the options:

A (1, 6): $y=2x+4\Rightarrow\ 6=(2\times 1) +4\Rightarrow\ 6=6$
B (1, 2): $y=2x+4\Rightarrow\ 2=(2\times 1) +4\Rightarrow\ 2\neq 6$
C (3, 6): $y=2x+4\Rightarrow\ 6=(2\times 3) +4\Rightarrow\ 6\neq10$
D (8, 16): $y=2x+4\Rightarrow\ 16=(2\times 8) +4\Rightarrow\ 16\neq20$

Thus, the ordered pair generated from the equation is (1, 6).

8 0

3 years ago

Factor the expression 2x^3-10x^2-5x+25. Show your work.

azamat

Step 1. Factor out common terms in the first two terms, then in the last two terms.

2x^2(x - 5) -5(x - 5)

Step 2. Factor out the common term x - 5

(x - 5)(2x^2 - 5)

4 0

2 years ago

Look at the number line below.

Paladinen [302]

? -2 -1 0 1

-1-2=-3

The answer is -3

3 0

1 year ago

2x+3y= 14 3х - 4 y = 4

goldenfox [79]

The solution to given system of equations are (x, y) = (4, 2)

Solution:

Given system of equations are:

2x + 3y = 14 ---------- eqn 1

3x - 4y = 4 --------- eqn 2

We have to solve the given system of equations

We can solve the above system of equations by elimination method

Multiply eqn 1 by 3

3(2x + 3y = 14)

6x + 9y = 42 --------- eqn 3

Multiply eqn 2 by 2

2(3x - 4y = 4)

6x - 8y = 8 ----------- eqn 4

Subtract eqn 4 from eqn 3

6x + 9y = 42

6x - 8y = 8

( - ) --------------

9y + 8y = 42 - 8

17y = 34

Substitute y = 2 in eqn 1

2x + 3(2) = 14

2x + 6 = 14

2x = 14 - 6

2x = 8

Thus the solution to given system of equations are (x, y) = (4, 2)

5 0

2 years ago