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kompoz [17]
3 years ago
13

Faith started last week with $1,100 in her checking account. During the week, she wrote the checks below.

Mathematics
2 answers:
quester [9]3 years ago
6 0

Answer:

the correct answer is A

Step-by-step explanation:


Sunny_sXe [5.5K]3 years ago
5 0

Answer:

A- Faith did a good job; everything is correct.

Step-by-step explanation:

Her final balence is correct, and she organized her check register correctly.

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The number 13 is less than the number of hours Nathan's volleyball team trains in a week. Which of the following inequalities re
Elza [17]

Answer : A x > 13

The number 13 is less than the number of hours Nathan's volleyball team trains in a week.

Let the number of hours in a week is x

Question says 13 is less than the number of hours

So we can write it as 13 < x

We always put the variable in the left. When we switch the variable then we reverse the inequality sign.

13 < x can be written as x > 13

6 0
3 years ago
Read 2 more answers
The following equations are given:
jarptica [38.1K]

The solution to the variables using equations 1, 2 and 3 is x = 2, y = -1 and z = 3 and the solutions in part b hold for equation 4

<h3>Solving the variables using equations 1 and 2</h3>

There are three variables in the system

To solve the three variables, there must be at least three equations in the system of equations

Hence, the variables cannot be solved because the number of equations is not enough

<h3>Solving the variables using equations 1, 2 and 3</h3>

We have:

3x + z + y = 8

5y - x = -7

3z + 2x - 2y = 15

Make x the subject in (2)

x = 5y + 7

Substitute x = 5y + 7 in (1) and (3)

3(5y + 7) + z + y = 8

15y + 21 + z + y = 8

16y + z = -13

3z + 2(5y + 7) - 2y = 15

3z + 10y + 14 - 2y = 15

3z + 8y = 1

Multiply 16y + z = -13 by 3

48y + 3z = -39

Subtract 3z + 8y = 1 from 48y + 3z = -39

48y - 8y + 3z - 3z = -39 - 1

40y = -40

Divide by 40

y = -1

Substitute y = -1 in x = 5y + 7

x = 5(-1) + 7

x = 2

Make z the subject in 16y + z = -13

z = -13 - 16y

Substitute y = -1

z = -13 - 16(-1)

z = 3

Hence, the solution to the variables using equations 1, 2 and 3 is x = 2, y = -1 and z = 3

<h3>Can the solution work for equation 4?</h3>

We have:

4x + 5y - 2z = -3

Substitute x = 2, y = -1 and z = 3

4(2) + 5(-1) - 2(3) = -3

Evaluate

-3 = -3 --- this is true

Hence, the solutions in part b hold for equation 4

Read more about system of equations at:

brainly.com/question/12895249

#SPJ1

<u>Missing part of the question</u>

The following equations are given:

Equation #1: 3x + z + y = 8

Equation #2: 5y - x = -7

Equation #3: 3z + 2x - 2y = 15

Equation #4: 4x + 5y - 2z = -3

3 0
2 years ago
3.9x - 0.7 = 8.66, so what does x equal?
scoundrel [369]

Answer:

x=2.4

Step-by-step explanation:

brainliest pls

6 0
2 years ago
Read 2 more answers
Simplify 7x²-x²<br> how to simplify this maths question
kondaur [170]

Hi student, let me help you out! :)

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  . . . . . . . . . . .  . . . . . . . . . . . . . . . . . . . . . . .

We are asked to simplify the expression \large\pmb{7x^2-x^2}.

\triangle~\fbox{\bf{KEY:}}

  • Combine like terms! :)

That's exactly what we need to do - combine like terms.

So, we subtract:

\star~\large\pmb{7x^2-x^2}

Which gives us:

\star~\large\pmb{6x^2}

Hope it helps you out! :D

Ask in comments if any queries arise.

#StudyWithBrainly

~Just a smiley person helping fellow students :)

6 0
1 year ago
What does s equal?pls help me plsss.
Archy [21]

Answer:

s< -7/11

Step-by-step explanation:

6 0
3 years ago
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