B is the midpoint of segment AC; AB = 8v, and AC = 2v + 42. What is BC?

Mathematics

2 answers:

Alona [7]2 years ago

7 0

2 * AB = AC
2 * 8v = 2v + 42
16v - 2v = 42
14v = 42
v = 42/14
v = 3

BC = AB = 8v = 8*3 = 24

KonstantinChe [14]2 years ago

7 0

I believe it's 24 after solving.

You might be interested in

40% of 125 is what number?

Hatshy [7]

The answer is 32

Solution for 40 is what percent of 125:

40:125*100 =

( 40*100):125 =

4000:125 = 32

Now we have: 40 is what percent of 125 = 32

Question: 40 is what percent of 125?

Percentage solution with steps:

Step 1: We make the assumption that 125 is 100% since it is our output value.

Step 2: We next represent the value we seek with $x$x.

Step 3: From step 1, it follows that $100\%=125$100%=125.

Step 4: In the same vein, $x\%=40$x%=40.

Step 5: This gives us a pair of simple equations:

$100\%=125(1)$100%=125(1).

$x\%=40(2)$x%=40(2).

Step 6: By simply dividing equation 1 by equation 2 and taking note of the fact that both the LHS
(left hand side) of both equations have the same unit (%); we have

$\frac{100\%}{x\%}=\frac{125}{40}$
100%
x%=
125
40

Step 7: Taking the inverse (or reciprocal) of both sides yields

$\frac{x\%}{100\%}=\frac{40}{125}$
x%
100%=
40
125

$\Rightarrow x=32\%$⇒x=32%

Therefore, $40$40 is $32\%$32% of $125$125.

7 0

2 years ago

Read 2 more answers

Sarah bought two t-shirts and one sweatshirt. The t-shirts cost $15.22 each. If Sarah spent a total of $67.94,how many dollars d

Lena [83]

Answer:

111

Step-by-step explanation:

6 0

2 years ago

Pls answer, need to have it by Friday <br><br> Thank you

puteri [66]

Answer:

Step-by-step explanation:

I'm pretty sure you are only meant to draw a rectangle of 34 I'm not sure tho.

8 0

1 year ago

olice response time to an emergency call is the difference between the time the call is first received by the dispatcher and the

yan [13]

Answer:

0.7823 = 78.23% probability that the response time is between 3 and 9 minutes.

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score 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 p-value, we get the probability that the value of the measure is greater than X.

Mean of 7.2 minutes and a standard deviation of 2.1 minutes.

This means that $\mu = 7.2, \sigma = 2.1$