4 years ago

What is now the length in meters?

2 answers:

6 0

If you have the area of a rectangle as x2 - 49 your factorised version would be (x-7) and (x+7). Since you cannot have a negative measurement it would 7

Natasha_Volkova [10]4 years ago

5 0

I think length is 7－x.

You might be interested in

3 × 1/4 need help its just the acual answer I need im srry I didnt spell acual right I forgot. :) lol

Andreyy89

Answer:

3/4

Step-by-step explanation:

bahrjdksjshhswheh

4 0

3 years ago

A population of size 3,624 grows at a rate of 3% per year, compounded continuously. How big will the population be in 2 years?

rodikova [14]

Answer:

Step-by-step explanation:

The continuous compound formula is

$y=Pe^{rt$ where P is the principle or starting value, r is the growth rate in decimal form, and t is the time in years. For us:

$y=3624e^{(.03)(2)}\\y=3624e^{.06}\\y=3624(1.061836547)\\y=3848.09$

which would probably round to just 3848 people.

8 0

3 years ago

On a skiing trip there are five people but only three pairs of skis how many different groups of three could ski

____ [38]

10 different groups can ski.

This is a combination of 5 items taken 3 at a time:
$_5C_3=\frac{5!}{3!(5-3)!}=\frac{5!}{3!2!}=\frac{120}{12}=10$

3 0

3 years ago

Simplify the expression 53 + 3(5 − 3).

IrinaVladis [17]

Answer:

Step-by-step explanation:

5-3=2

53+3(2)

53+6

=59

7 0

4 years ago

Read 2 more answers

The sales price of a single family house in Charlotte is normally distributed with mean $210,000 and standard deviation $35,000.

Lady_Fox [76]

Answer:

E(X ¯)=210,000.

Step-by-step explanation:

A sampling distribution for samples of size n=49 from a population with means μ=210,000 and standard deviation σ=35,000, has the following means anda standard deviation:

$\mu_s=\mu=210,000\\\\\sigma_s=\sigma/\sqrt{n}=35,000/\sqrt{49}=35,000/7=5,000$

If X ¯ is the mean sales price of the sample, it will have a mean value of E(X ¯)=210,000.

7 0

3 years ago