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Naily [24]
3 years ago
11

Need help ASAP please! thank you! 20 pts

Mathematics
1 answer:
densk [106]3 years ago
4 0

y=-\dfrac{x}{4}+[?]\\\\\text{We know: a line intersects the point (-8, -1).}\\\text{Put the coordinates of the point into the equation of a line}\\(-8,\ -1)\to x=-8,\ y=-1\\\\-1=-\dfrac{-8}{4}+[?]\\\\-1=2+[?]\qquad|\text{subtract 2 from both sides}\\\\-3=[?]\\\\Answer:\ y=-\dfrac{x}{4}-3

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Write the circumference of a circle with a diameter of 49 inches in terms of pi
AleksAgata [21]

Answer:

153.94

Step-by-step explanation:

c=2r*r

The radius is half of the diameter.

To find the radius you will divide 49 inches by 2.

You should get a total of 24.5

Now that you have your radius you are going to use the circumference formula to solve.

C= 2r*r

C=2(24.5)*(24.5)

type that into the calculator (without the parenthesis) and boom your done!

You answer should be 153.938

then you round to get a total of 153.94

I hope i was able to help!

5 0
3 years ago
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A check is _____.
torisob [31]

Answer:

B

Step-by-step explanation:

A check is an I.O.U. or a promissory note.

3 0
3 years ago
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Please help me out people
Juliette [100K]

Answer:

c i think

Step-by-step explanation:

4 0
3 years ago
A retired woman has $280,000 to invest. She has chosen one relatively safe investment fund that has an annual yield of 9% and an
ASHA 777 [7]

Answer:

9% fund: $ 210,000

13% fund: $70,000

Step-by-step explanation:

As she wants to have a $28,000 annual return for her $280,000 investment, she is expecting a return rate of 10%:

r=\dfrac{R}{C}=\dfrac{28,000}{280,000}=0.10

If we call x the proportion of the capital in the 9% fund, then (1-x) is the proportion of the capital in the 13% fund,and the return of the combination has to be the expected return of 10%:

0.09x+0.13(1-x)=0.10\\\\0.09x+0.13-0.13x=0.10\\\\-0.04x=0.10-0.13=-0.03\\\\x=\dfrac{0.03}{0.04}=0.75

Then, we know that 75% of the capital should be invested in the 9% fund and 25% in the 13% fund.

This correspond to a capital of:

9% fund: 0.75*$280,000 = $ 210,000

13% fund: 0.25*$280,000 = $70,000

6 0
3 years ago
The graph of this quadratic function is a parabola. What is the x-coordinate of the vertex? y = x^2 - 3
Studentka2010 [4]
\bf y = x^2 - 3\implies y=1x^2+0x-3\qquad now
\\\\\\
\textit{vertex of a parabola}\\ \\
\begin{array}{llccll}
y=&1x^2&+0x&-3\\
&\uparrow &\uparrow &\uparrow \\
&a&b&c
\end{array}\qquad 
\left(-\cfrac{{{ b}}}{2{{ a}}}\quad ,\quad  {{ c}}-\cfrac{{{ b}}^2}{4{{ a}}}\right)

so, the x-coordinate is \bf -\cfrac{{{ b}}}{2{{ a}}}
5 0
3 years ago
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