All categories

4 years ago

I need help on this promblem

Mathematics

1 answer:

puteri [66]4 years ago

8 0

The two triangles are similar all angles are equal.

the sides are proportional

10/22 = AQ/AQ + 18

22AQ = 10 AQ+ 180

12 AQ = 180

AQ = 15

You might be interested in

Use the matrix method to solve the system of equations 2 x + 4 y = 8 and 6 x + 3 y = -3. The resulting matrix is:

attashe74 [19]

Answer:

$x=-2,y=3$

Step-by-step explanation:

The given system of equations is

$2x+4y=8$

and

$6x+3y=-3$

The augmented matrix is

$\left[\begin{array}{ccc}2&4&|8\\6&3&|-3\end{array}\right]$

$\frac{1}{2}R_1\to R_1$

$\left[\begin{array}{ccc}1&2&|4\\6&3&|-3\end{array}\right]$

$-6R_1+R_2\to R_2$

$\left[\begin{array}{ccc}1&2&|4\\0&-9&|-27\end{array}\right]$

$-\frac{1}{9}R_2\to R_2$

$\left[\begin{array}{ccc}1&2&|4\\0&1&|3\end{array}\right]$

$-2R_2+R_1\to R_1$

$\left[\begin{array}{ccc}1&0&|-2\\0&1&|3\end{array}\right]$

Hence $x=-2,y=3$

3 0

4 years ago

Help ASAP!!! Easy question i guess?

Nataliya [291]

Answer:

C. Circle

Step-by-step explanation:

A sphere is just a three dimensional circle, if you rotate a two dimensional object it becomes three dimensional.

4 0

3 years ago

Read 2 more answers

( PLEASE HELP NOWWWWW) Eroy collected data on the number of hours that each staff member at Eroy's Electronics slept Thanksgivin

Mariana [72]

The median would be either 4,7 or just 4 because you line them up least to greatest and check them off left to right until there is the median(the number in the middle) hope it helps ❤️

5 0

3 years ago

Read 2 more answers

On average, a family living on Pine Street spends $238.79 a year on school supplies. About how much does one of these families s

maks197457 [2]

Must be C.$24 but I'm not 100% sure.

5 0

3 years ago

The scores for a state's peace officer training test are normally distributed with a mean of 55 and a standard deviation of 12.

s344n2d4d5 [400]

Answer:

About 84% of the people have test scores that make them eligible to be interviewed

Step-by-step explanation:

Problems of normally distributed samples are solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this question, we have that:

$\mu = 55, \sigma = 12$

A state agency will only interview applicants with test scores of 43 or greater. About what percent of the people have test scores that make them eligible to be interviewed?

This is 1 subtracted by the pvalue of Z when X = 43. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{43 - 55}{12}$

$Z = -1$

$Z = -1$ has a pvalue of 0.1587

1 - 0.1587 = 0.8413

Rounding to the nearest percent

About 84% of the people have test scores that make them eligible to be interviewed

5 0

3 years ago