All categories

3 years ago

Please help me! Will mark brainliest!

Mathematics

2 answers:

Eddi Din [679]3 years ago

7 0

Answer:

B. 2sqrt(30)

Step-by-step explanation:

The three right triangles are similar.

In the left right triangle, the short leg measures 6, and the hypotenuse measures x.

In the large triangle, the short leg measures x, and the hypotenuse measures 6 + 14 = 20.

Since all three triangles are similar, the ratios of the lengths of corresponding sides are equal.

6/x = x/20

x^2 = 6 * 20

x^2 = 120

x = sqrt(120)

x = sqrt(4 * 30)

x = 2sqrt(30)

Answer: B. 2sqrt(30)

hodyreva [135]3 years ago

3 0

Answer:

2 root 21

Step-by-step explanation:

14 + 6 equals 20

Add x is 21

2 root21

You might be interested in

Translating a sentence into a multi-step equation

Kryger [21]

Answer:7x-4= 3

Step-by-step explanation:

4 less than the product of 7 and a number is equal to 3.

The answer is 7x-4= 3 beacuse:

(a. whenever you have something less than , the first number in the sentence (in this cacse 4) goes after the second number (in this case 7) with a subtraction sign in the middle. (imagine this equation looking like 7-4 for now).Thats a little trick i use whenever i have to write "something less than something"

(b. okay so now we know it has to be 7 times somethig -4=3, but now we just need to write the "product of 7 and a number" in proper form. in other words, whenever you get somethig times a number, it is always going to be that number with an x right next to it. so thats why i made it 7x.

(c. "equals 3" is easy because you just turn it into an "=3".

(d. Now put it together. "4 less than the product of 7 and a number is equal to 3." becomes 7x-4=3.

Hope this helps :)) Also brainliest would be appreciated, worked pretty hard on this ! :D

5 0

1 year ago

A picture on a page was reduced by 60% of its original size, and this copy was then reduced by 20%. What percent of the size of

melamori03 [73]

Answer:

the final copy should be 12% of the original picture.

Step-by-step explanation:

you multiply 20% by 60%

and you get 0.12 which is the same as 12%

6 0

3 years ago

76,80,88,95,100,101,? Which number comes next in this sequence?

ANTONII [103]

Answer:

112

Step-by-step explanation:

76->88->100->112

3 0

3 years ago

Read 2 more answers

I need help simplify: 4^8/4^-4

LenKa [72]

Answer:

$4^{12}$

Step-by-step explanation:

using the rule of exponents

$\frac{a^{m} }{a^{n} }$ = $a^{(m-n)}$ , then

$\frac{4^{8} }{4^{-4} }$ = $4^{(8-(-4))}$ = $4^{(8+4)}$ = $4^{12}$

5 0

1 year ago

WHY DOES NO ONE ANSWER MY QUESTIONS?? Its kinda annoying that i answer others' questions but no one answers mine. Well if anyone

Alex17521 [72]

Answer:

The test was not statistically significant because if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 21% of the time.

Step-by-step explanation:

This is the right answer,since this result is only observed 21% of the time, so in general it's not significant, so the first 2 are eliminated. The 2 x 0.21 doesn't matter since, the percent is 21% not 42%, so it doesn't even matter. The last question we eliminate is:"The test was not statistically significant because if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 79% of the time" 79% of the time is a pretty good amount to say it's significant, but it only says 21% of the time.So, it leaves us with:The test was not statistically significant because if the null hypothesis is true, one could expect to get a test statistic at least as extreme as that observed 21% of the time.

Hope this helps lol (: is this a psat or somethin?

8 0

3 years ago