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77julia77 [94]
2 years ago
12

Really need help in these two questions!!!! Thank you math experts!!!!

Mathematics
1 answer:
const2013 [10]2 years ago
3 0

<h3><u>Answers</u><u>:</u></h3>

1. b = 7,

a = 12

OR

b =  - 1,

a =  - 4

2. = 10

See attached images for explanation.

<h3 /><h3>I hope they help.</h3>

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what is the equation of the line in standard form? please help me I am really having a hard time with this
fiasKO [112]

Answer:

      -4 - 2

m= --------- (over)

      -1 - 2

Step-by-step explanation:


4 0
4 years ago
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What expression is equivalent to -21? <br> A. 9-(-12)<br> B. 9+(-12)<br> C. -9+12<br> D. -9-12
xz_007 [3.2K]

Answer:

D

Step-by-step explanation:

-9-12 = -21

hope this helped :)

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4 years ago
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Guyss please help me with this question. I tried a thousand times but it's still incorrect.
Shalnov [3]

Answer: 17.68cm

Step-by-step explanation:

Using the area formula of a cone, find the height first.

A=\pi r(r+\sqrt{h^2+r^2})

Solve for h,

Begin by dividing by \pi r

\frac{A}{\pi r}=r+\sqrt{h^2+r^2}

Subtract r.

\frac{A}{\pi r}-r=\sqrt{h^2+r^2}

Square both sides.

(\frac{A}{\pi r}-r)^2=(\sqrt{h^2+r^2})^2

(\frac{A}{\pi r}-r)^2=h^2+r^2

Subtract r^2

(\frac{A}{\pi r}-r)^2-r^2=h^2

Extract the square root.

\sqrt{(\frac{A}{\pi r}-r)^2-r^2 } =\sqrt{h^2}

\sqrt{(\frac{A}{\pi r}-r)^2-r^2 } =h

Plug in your values.

\sqrt{[\frac{670cm^2}{(3.14)(8cm)}-(8cm)]^2-(8cm)^2 } =h

Solve;

\sqrt{[\frac{670cm^2}{25.12cm}-(8cm)]^2-(8cm)^2 } =h

\sqrt{[26.67cm-(8cm)]^2-(8cm)^2 } =h

\sqrt{(18.67cm)^2-(8cm)^2 } =h

\sqrt{348.57cm^2-64cm^2}=h

\sqrt{284.57cm^2}=h

15.77cm=h

------------------------------------------------------------------

Now, to find the slant height use this formula: l=\sqrt{h^2+r^2}

l=\sqrt{(15.77cm)^2+(8cm)^2}\\l=\sqrt{248.69cm^2+64cm^2}\\ l=\sqrt{312.69cm^2}\\ l=17.68cm

8 0
3 years ago
If two polynomial equations have real solutions, then will the equation that is the result of adding, subtracting, or multiplyin
Solnce55 [7]
If you graph it,the equation will have a real solution and the solution has to cross the x Axis
5 0
3 years ago
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Steve is buying Darryl's house for $360,000. Steve's loan amount is $275,000. He has agreed to pay 2 points at closing. How much
skad [1K]

Answer:

$5,500

Step-by-step explanation:

Steve is Darrlyn house for $360,000

Steve loan amount $275,000

He agreed to pay 2 points at closing

Therefore the amount steve will pay for points can be calculated as follow

= 275,000 × 2/100

= 275,000 × 0.02

= 5,500

Hence Steve will pay $5,500

3 0
3 years ago
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