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Arada [10]
3 years ago
5

Subtract. Express your answer in simplest form. 8/9 - 5/12

Mathematics
1 answer:
notka56 [123]3 years ago
3 0
The answer for this is 32
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How would I find the equation of the line of best fit for this table<br> x 7 9 11<br> y 12.4 13 16
Dominik [7]

Answer:

Use your calculator to find the line of best fit for the data. ... Age Range, \begin {align*}x\end{align*}, 1-3, 4-6, 7-10, 11-14, 15- ... Here is a sample table for the scatterplot

4 0
3 years ago
sarah can complete a project in 90 minutes and her sister betty can complete it in 120 minutes if they both work on the project
alukav5142 [94]

Answer:

It will take them approximately 51.43 minutes to complete the project together

Step-by-step explanation:

This is what is called a "shared job" problem.

The best way to work on them is to start by finding the "portion" of the job done by each of the people in the unit of time.

So, for example, Sarah completes the project in 90 minutes, so in the unit of time (that is 1 minute) she completed 1/90 of the total project

Betty completes the project in 120 minutes, so in the unit of time (1 minute) she completes 1/120 of the total project.

We don't know how long it would take for them to complete the project when working together, so we call that time "x" (our unknown).

Now, when they work together completing the entire job in x minutes, in the unit of time they would have done 1/x of the total project.

In the unite of time, the fraction of the job done together (1/x) should equal the fraction of the job done by Sarah (1/90) plus the fraction of the job done by Betty. This in mathematical form becomes:

\frac{1}{x} =\frac{1}{90} +\frac{1}{120}\\\frac{1}{x} =\frac{4}{360} +\frac{3}{360}\\\frac{1}{x} =\frac{7}{360} \\x=\frac{360}{7} \\x=51.43\,\,min

So it will take them approximately 51.43 minutes to complete the project together.

8 0
3 years ago
Rachel has developed a plan to start paying off her credit card debt, and has stopped making purchases with her credit card. She
Ann [662]
Present value of annuity PV = P(1 - (1 + r/t)^-nt) / (r/t)
where: p is the monthly payment, r is the APR = 14.12% = 0.1412, t is the number of payments in one year = 12, n is the number of years = 2.
1,120.87 = P(1 - (1 + 0.1412/12)^(-2 x 12)) / (0.1412 / 12)
0.1412(1120.87) = 12P(1 - (1 + 0.1412/12)^-24)
P = 0.1412(1120.87) / 12(1 - (1 + 0.1412/12)^-24) = $53.88

Minimum monthly payment = 3.15% of 1120.87(1 + 0.1412/12) = 0.0315 x 1120.87(1 + 0.1412/12) = $35.72

Therefore, his first payment will be greater than the minimum payment by 53.88 - 35.72 = $18.16
5 0
3 years ago
Read 2 more answers
Find the point of Intersection of two lines<br> Y= 4x + 1 and Y 2x + 7
satela [25.4K]

Answer:

(3, 13)

Step-by-step explanation:

i plugged the two lines into desmos :)

5 0
2 years ago
Read 2 more answers
If 3x + 6 = 18, then x = ?
zaharov [31]

Answer:

X=4

Step-by-step explanation:

3x + 6 = 18 \\ 3x = 18 - 6 \\ 3x = 12 \\ x = 4

7 0
3 years ago
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