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s344n2d4d5 [400]
1 year ago
13

Which linear equation would produce a y-intercept of (0, 5) and a slope of 7?

Mathematics
1 answer:
Dafna11 [192]1 year ago
7 0

Answer:

y=7x + 5

Step-by-step explanation:

sub into y= mx + c

where m = slope/gradient (7)

and c = y-value of y-intercept (5)

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Please help! <br> Simplify. Your answer should contain only positive exponents.
maxonik [38]

Answer:

\frac{1}{4k^3}

Step-by-step explanation:

It's already in a form that only ha positive exponents.  Just to state it though you could rewrite it as k*(4k^{4})^{-1} or k*4^{-1}*k^{-4}  The question asks for positive exponents though so yu don't need to do that.

You also need to know \frac{x^a}{x^b}=x^{a-b} so in this case \frac{k}{k^4}=\frac{k^1}{k^4} =k^{1-4}=k^{-3}=\frac{1}{k^3}

so \frac{k}{4k^4}=\frac{1}{4}*\frac{k}{k^4}=\frac{1}{4}*\frac{1}{k^3}=\frac{1}{4k^3}

3 0
3 years ago
Plz do this question if you did I will very appreciated you. plz.​
Nastasia [14]

The area formula of a circle is r^{2} × π.

With that being said, we can solve both problems!

Starting with part A:

-The radius we know is 21cm. From there, we can substitute in our formula with the new value.

21^{2} x π

From there, we can square our radius:

(21 x 21) x π

(441) x π

And finally, we can multiply by pi to get our answer.

(441) x π

1385.44236023

Which rounded to the nearest tenth is 1385.4. Therefore, the area of the porthole is 1385.4 centimetres.

The second part can be followed with the same process, hopefully you understand the concept enough to where you're comfortable solving problems like this on your own. Feel free to reach out if you have any further trouble!

<em>Hope this helped! :)</em>

5 0
3 years ago
2x (3x5) - (8-3)= what is the answer please
bekas [8.4K]

Answer:

2x15-5=30-5=25 So, the answer is 25.

6 0
3 years ago
What number is needed to complete the pattern. 66 73 13 21 52 __ 10 20
svetoff [14.1K]
Please try 43 I'm not sure
3 0
3 years ago
Sebastian is going to invest in an account paying an interest rate of 1.5%
densk [106]

Answer:

I would answer but I cannot see it sorry :D

Step-by-step explanation:

7 0
2 years ago
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