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VMariaS [17]
3 years ago
11

Jacob earned $80 babysitting and deposited the money into his savings account.The next week he spent $85 on video games.Use inte

gers to describe the weekly changes in Jacob's savings account balance.
Mathematics
1 answer:
IgorC [24]3 years ago
3 0

Answer:

Here's what I get

Step-by-step explanation:

\begin{array}{cccc}\bf{Week}& \textbf{Earned/Spent} & \textbf{Change} & \textbf{Net Change}\\1 & \text{Earned \$80} & + 80 & + 80\\2 & \text{Spent \$85} & \mathbf{- 85} &\mathbf{-5}\\\end{array}

The net chance in Jacob's savings was +80 in the first week, -85 in the second week, and -5 overall.

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Solve the system of equations by substitution. What is the solution for x?
Nostrana [21]

Answer:

There is no x value, as there is no solution

Step-by-step explanation:

we have

2x+y=1

Isolate the variable y

y=-2x+1 -----> equation A

4x+2y=-1 ---> equation B

Solve the system of equations by substitution

Substitute the equation A in the equation B and solve for x

4x+2(-2x+1)=-1

4x-4x+2=-1

2=-1 ------> is not true

therefore

The system has no solution

Equation A and equation B are parallel lines with different y-intercepts

7 0
3 years ago
Evaluate the expression for this
Zinaida [17]
Answer is

184
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25
7 0
2 years ago
ABC is a straight line <br> the length of
Drupady [299]

Answer:

Answer:

AB = 20 metres

BC = 60 metres

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Can someone please help me with this question asap! greatly appreciated!
dedylja [7]

Answer:

1344 ft^2

Step-by-step explanation:

From the picture we can see that 4w = 3l, which means that l = (4/3)w.  Since w = 12 ft, l = (4/3)(12 ft) = 16 ft.  Then the total area of the floor is

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8 0
3 years ago
A cube-shaped aquarium has edges that are 3 feet long and is filled with water that has a density of 62 lbs/ft3 Should the aquar
Sunny_sXe [5.5K]

Given:

There are given the edge of the cube-shaped aquarium has 3 feet.

Explanation:

To find the value, we need to use the volume of the cube formula:

So,

From the formula of volume:

V=a^3

Where

a represents the value of edge.

So,

Put the value of edge into the above formula:

Then,

\begin{gathered} V=a^3 \\ V=3^3 \\ V=27cube\text{ feet} \end{gathered}

Now,

The water has a density of 62 pounds per cube foot.

According to the question:

If the weight of 1 cubic foot of water is 62 pounds, then the weight of 27 cube feet water is:

62\times27=1674pound

Final answer:

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And,

No, the density of water would not change.

6 0
1 year ago
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