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3 years ago

Help plssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssss

Mathematics

2 answers:

Nostrana [21]3 years ago

8 0

Answer:

See image

Step -by-step explanation:

Take the number and times by 2, then subtract 5. That us what the 2m-5 at the top of the column is telling you to do.

Solnce55 [7]3 years ago

5 0

Answer: C. -13, -5, 19

Step-by-step explanation:

2(-4)-5 = -13

2(0)-5= -5

2(12)-5= 19

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Simplify (4^3)^5. A. (1/4)^15 B. 4^8 C. 4^15 D. 14^5

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(4^3)^5=4^(3*5)=4^15

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4 years ago

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3 years ago

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What is the value of the missing variable? 2x+4 = 20

Gemiola [76]

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Step-by-step explanation:

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What is the focus of the parabola? y=−1/4x2−x+3

alex41 [277]

Answer: Focus = (-2, 3)

Step-by-step explanation:

$y=-\dfrac{1}{4}x^2-x+3\\\\\rightarrow a=-\dfrac{1}{4},\ b=-1$

First let's find the vertex. We do that by finding the Axis-Of-Symmetry:

$AOS: x=\dfrac{-b}{2a}\quad =\dfrac{-(-1)}{2(\frac{-1}{4})}=\dfrac{1}{-\frac{1}{2}}=-2$

Then finding the maximum by inputting x = -2 into the given equation:

$y=-\dfrac{1}{4}(-2)^2-(-2)+3\\\\y=-1+2+3\\\\y=4$

The vertex is: (-2, 4)

Now let's find p, which is the distance from the vertex to the focus:

$a=\dfrac{1}{4p}\\\\\\-\dfrac{1}{4}=\dfrac{1}{4p}\\\\\\p=-1$

The vertex is (-2, 4) and p = -1

The focus is (-2, 4 + p) = (-2, 4 - 1) = (-2, 3)

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3 years ago

What is 32986538537 plus 78.9 times 5

Umnica [9.8K]

Answer:

164,932,693,079.5

Step-by-step explanation:

To start you must add 78.9 to 32,986,538,537 which will give you 32,986,538,615.9. Then you must multiply 5.

9*5=45 keep the keep the 4 drop the 5

5*5=25+4=29 keep the 2 drop the 9 and continue doing this. Until you get to 3*5=15+1= 16 and you get your answer

164,932,693,079.5

8 0

4 years ago