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3 years ago

I idk how to put this please help me understand better

Mathematics

1 answer:

arlik [135]3 years ago

3 0

The answer to the t.v question is 55 inches
Sorry I lost it and found you and can’t message you

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Last week, Tina worked 40 hours in 4 days. She worked the same number of hours each day. How many hours did she work each day? W

blsea [12.9K]

She works 10 hour per day

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3 years ago

Help Me Please I will Give Brainliest If Correct!!!

disa [49]

Answer:

8^-2a^7 = a^7/8^2 = a^7/64

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

What is the equation of the quadratic graph with a focus of (3, 1) and a directrix of y = 5?

telo118 [61]

Answer:

$f(x)=-\frac{1}{8}(x-3)^2+3$

Step-by-step explanation:

We want to find the equation of the parabola with a focus of $(3,1)$ and directrix $y=5$ .

Considering the directrix, the quadratic graph must open downwards.

The equation of this parabola is given by the formula,

$(x-h)^2=4p(y-k)$ , where $(h,k)$ is the vertex of the parabola.

The axis of this parabola meets the directrix at $(3,5)$ .

Since the vertex is the midpoint of the focus and the point of intersection of the axis of the parabola and the directrix,

$h=\frac{3+3}{2}=3$ and $k=\frac{5+1}{2}=3$ .

The equation of the parabola now becomes,

$(x-3)^2=4p(y-3)$ .

Also $|p|$ is the distance between the vertex and the directrix.

$|p|=2$

This implies that $p=-2\:or\:2$ .

Since the parabola turns downwards,

$p=-2$ .

Our equation now becomes,

$(x-3)^2=4(-2)(y-3)$ .

$(x-3)^2=-8(y-3)$ .

We make y the subject to get,

$y=-\frac{1}{8}(x-3)^2+3)$ .

This is the same as

$f(x)=-\frac{1}{8}(x-3)^2+3)$ .

4 0

3 years ago

If x-1/3 = k and k = 3, what is the value of x ? A) 2 B) 4 C) 9 D) 10

Semenov [28]

Answer:

None of the above

Step-by-step explanation:

x-1/3 = k

We know that k=3, so we can substitute that into the equation

x-1/3 = 3

Add 1/3 to each side

x-1/3 + 1/3 = 3+1/3

x = 3 1/3 or as an improper fraction 10/3

7 0

3 years ago

Use the diagram below to answer the questions. -17h 119° с G Find m_PCT

pshichka [43]

Answer:

119°

Step-by-step explanation:

It’s 119. You don’t need to solve for h.

7 0

3 years ago