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3 years ago

Need help please! Answer ASAP please!!

Mathematics

2 answers:

Sati [7]3 years ago

7 0

Answer:

80 degrees

Step-by-step explanation:

If angle E and angle Y are conguent, angle X and F would be congruent making angle F 80 degrees

DochEvi [55]3 years ago

3 0

80°= answer will be

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11 1/9 - 6 2/3 pease anwer

rosijanka [135]

4 5/9 this is the answer to your question

7 0

3 years ago

Read 2 more answers

A consumer advocacy group tested the "on-air" lifetimes a random sample of 241 cell phone batteries. The mean lifetime was 3.2 h

snow_tiger [21]

Using the Empirical Rule, it is found that 229 batteries have lifetimes between 3.0 hours and 3.4 hours.

--------------------------

By the Empirical Rule, in a normal variable: 68% of the measures are within 1 standard deviation of the mean, 95% are within 2 and 99.7% are within 3.

--------------------------

Mean of 3.2 hours with a standard deviation of 0.2 hours.

3 = 3.2 - 2(0.1)

3.4 = 3.2 + 2(0.1)

Thus, between 3 and 3.4 hours is within 2 standard deviations of the mean, which is 95%.
Out of 241 batteries: $0.95(241) = 229$

229 batteries have lifetimes between 3.0 hours and 3.4 hours.

A similar problem is given at brainly.com/question/24552083

4 0

3 years ago

Multiply this thank you will mark brainliest

VMariaS [17]

Answer:

x^4 -y^4 +6x^2y +9y^2

Step-by-step explanation:

8 0

3 years ago

Given f(x) = x^2 − 2x − 5.

lukranit [14]

Answer:

$(x - 1)^2 - 6$

Step-by-step explanation:

You need to know:

Vertex form = $a(x -h)^2 + k$

The vertex is at

(h, k)

Need to know about perfect squares

Need to know how to complete the square.

-----------------------------------------------------------------------------------------

To convert $x^2-2x-5$ you need to complete the square on the equation.

Complete the Square $x^2 - 2x -5$

$x^2 - 2x -5$

$(x^2 - 2x) -5$

Divide -2 by 2 and then square it.

$\frac{-2}{2} = -1$

$-1^2 = 1$

Add the one to the parentheses and subtract the one from the 5

$(x^2 - 2x +1) -5 -1$

Square $(x^2 - 2x +1)$

$(x-1)^2$

Now we have

$(x - 1)^2 -5 -1$

Next add -5 - 1 = -6

$(x - 1)^2 - 6$

Our quadratic is in vertex form now.

Vertex form = $a(x -h)^2 + k$

our equation = $(x - 1)^2 - 6$

Vertex = (1, -6)

5 0

4 years ago

chubhunter [2.5K]

9514 1404 393

Answer:

$3277.23

Step-by-step explanation:

The future value of the CD with interest at rate r compounded semiannually for t years will be given by ...

A = P(1 +r/2)^(2t)

where P is the principal value.

For the given rate and time, this is ...

A = $2000(1 +0.05/2)^(2·10) = $2000(1.025^20) ≈ $3277.23

The value of the CD at maturity will be $3277.23.

6 0

3 years ago