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wariber [46]
3 years ago
8

A parabola can be drawn given a focus of (−4,−10) and a directrix of y=−4. What can be said about the parabola?

Mathematics
1 answer:
ANEK [815]3 years ago
6 0

Answer:

The answer to your question is: Yes a parabola can be drawn if we know the focus and the directrix.

Step-by-step explanation:

We can say that it is a vertical parabola that opens downwards.

We conclude that if we graph both the focus and the directrix. Also if we continue the process we can find the vertex (-4, -7) and p = 3.

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What is -12 + (-4) + (-17) ??
Ludmilka [50]

Answer:

The answer is -33

Step-by-step explanation:

7 0
1 year ago
Which of the following are solutions to the equation below?
scoundrel [369]

Answer:

The correct options for the solution values are:

  • x=2\sqrt{2}-5
  • x=-2\sqrt{2}-5

Step-by-step explanation:

Given the expression

x^2+10x+25=8

Subtract 25 from both sides

x^2+10x+25-25=8-25

Simplify

x^2+10x=-17

Add 25 or 5² to both sides

x^2+10x+5^2=8

as

x^2+10x+5^2=\left(x+5\right)^2

so the expression becomes

\left(x+5\right)^2=8

\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}

solve

x+5=\sqrt{8}

Subtract 5 from both sides

x+5-5=2\sqrt{2}-5

x=2\sqrt{2}-5

solve

x+5=-\sqrt{8}

Subtract 5 from both sides

x+5-5=-2\sqrt{2}-5

x=-2\sqrt{2}-5

Therefore, the solution to the equation

x=2\sqrt{2}-5,\:x=-2\sqrt{2}-5

Hence, the correct options for the solution values are:

  • x=2\sqrt{2}-5
  • x=-2\sqrt{2}-5

6 0
3 years ago
Can someone help me asapp !!!!
Doss [256]

Answer:

he has 10 type of each coin

Step-by-step explanation:

Total number of cents in possession is calculated as;

= 25 + 10 + 5

= 40 cent

Total amount in possession = $4

                                               = 400 cent

Since he has equal number of each cent, let this equal number be "y";

40cent (y) = 400cent

40y = 400

divide both sides by 40

\frac{40y}{40} = \frac{400}{40} \\\\y = 10

Therefore, he has 10 type of each coin

4 0
3 years ago
Simplify.<br><br> (2f+5)2<br> lllllllllllllllllllllllllll
Yuki888 [10]

Answer:

Step-by-step explanation:

I think 4f + 10

4 0
3 years ago
Read 2 more answers
Kay went bowling with her friends. She spent $3 to rent shoes and then 4.75 for each game of bowling. If she spent a total of $4
Amiraneli [1.4K]

41 - 3 = 38 \\ 38 \div 4.75 = 8
bowled 8 games
7 0
4 years ago
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