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3 years ago

Find the value of 15/124•230/30 divided 230/124

Mathematics

2 answers:

Leno4ka [110]3 years ago

6 0

Your answer is 92,741,935,479

valentina_108 [34]3 years ago

6 0

I agree with Mia029, the answer's 92,741,935,479 :).

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Find an equation for the parabola with focus at (-5,-4) and vertex at (-5,-3)

sattari [20]

Answer:

$(x+5)^{2}=-4(y+3)$

Step-by-step explanation:

Given:

Focus point = (-5, -4)

Vertex point = (-5, -3)

We need to find the equation for the parabola.

Solution:

Since the x-coordinates of the vertex and focus are the same,

so this is a regular vertical parabola, where the x part is squared. Since the vertex is above the focus, this is a right-side down parabola and p is negative.

The vertex of this parabola is at (h, k) and the focus is at (h, k + p). So, directrix is y = k - p.

Substitute y = -4 and k = -3.

$-4 = -3+p$

$p=-4+3$

$p=-1$

So the standard form of the parabola is written as.

$(x-h)^{2}=4p(y-k)$

Substitute vertex (h, k) = (-5, -3) and p = -1 in the above standard form of the parabola.

So the standard form of the parabola is written as.

$(x-(-5))^{2}=4(-1)(y-(-3))$

$(x+5)^{2}=-4(y+3)$

Therefore, equation for the parabola with focus at (-5,-4) and vertex at (-5,-3)

$(x+5)^{2}=-4(y+3)$

7 0

3 years ago

What the fact family for 4,6,10 I got b 10-6=4 10-4=6 4+6=10 6+4=10 what your answer

tensa zangetsu [6.8K]

Answer:

Step-by-step explanation:

These numbers form an addition and subtraction, fact family.

4, 6, 10

Choose the fact family formed by these numbers.

10 – 6 = 4

4 + 6 = 10

10 – 6 = 4

10 – 4 = 6

4 + 6 = 10

6 + 4 = 10

4 + 6 = 10

10 – 6 = 4

6 + 4 = 10

10 – 4 = 6

4 0

2 years ago

An exit poll in an election is a survey taken of voters just after they have voted. One major use of exit polls has been so that

3241004551 [841]

Answer:

P(A) = 0.39

Step-by-step explanation:

We are given;

P(W|A) = 0.7

P(W|A^c ) = 0.3

We are told that 60% of the respondents said they voted for A. Thus;

P(A|W) = 60% = 0.6

Now, using the principle of drawing lots, we can be able to find the probability of the event that they are willing to participate in the exit poll which is P(W).

Thus;

P(W) = [P(W|A) × P(A)] +[P(W∣A^c) × P(A^c)]

Now, P(A^c) can be expressed as 1 - P(A)

Thus, we now have;

P(W) = [P(W|A) × P(A)] + [P(W∣A^c) × (1 - P(A)]

Plugging in the relevant values gives;

P(W) = 0.7P(A) + 0.3(1 - P(A))

P(W) = 0.7P(A) + 0.3 - 0.3P(A)

P(W) = 0.3 + 0.4P(A)

Now,using Baye's theorem, we can find an expression for P(A|W)

Thus;

P(A|W) = [P(A ∩ W)]/P(W)

This can be further expressed as;

P(A|W) = [P(A) × P(W|A)]/P(W)

Plugging in relevant values, we have;

0.6 = 0.7P(A)/(0.3 + 0.4P(A))

Cross multiply to get;

0.6(0.3 + 0.4P(A)) = 0.7P(A)

0.18 + 0.24P(A) = 0.7P(A)

0.18 = 0.7P(A) - 0.24P(A)

0.46P(A) = 0.18

P(A) = 0.18/0.46

P(A) = 0.39

7 0

3 years ago

Will give brainliest

elena55 [62]

Answer:3

I’m sorry if it’s wrong

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Which two properties can you use to find (3.4×4)×(25×1) mmentally. Explain.Remember that the parentheses tell you which factors

artcher [175]

Tho would use order of operations!

7 0

3 years ago