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3 years ago

Which expressions are equivalent to 2(l + w)?

Mathematics

2 answers:

Sergio [31]3 years ago

6 0

Answer:I think it’s 52

Step-by-step explanation:

jasenka [17]3 years ago

3 0

Answer:

I belive it is 3 and 4

Step-by-step explanation:

sorry if it is wrong

You might be interested in

What value of x makes the following equation true? -5x/4=- 40

tangare [24]

Answer:

Step-by-step explanation:

First, you have to multiply -40 by 4 which gives you -160. After that, divide -160 by -5 which equals positive 32

4 0

3 years ago

Brainliest + [20] Points!!!! Explain!

Elena L [17]

Answer: 165 combination can be possible.

Step-by-step explanation:

Here, According to the question,

Different types of machines in the weight room in gym = 11

And, . Geoff has time to use only 3 of them this afternoon.

Therefore, total number of different combination of machine can geoff choose from to use

= $11_C_3$

= $\frac{11!}{3!\times (11-3)! }$ ( because $n_C_r = \frac{n!}{r!(n-r)!}$ )

= $\frac{11!}{3!\times 8! }$

= $\frac{11\times 10\times 9\times 8!}{6\times 8! }$

= $\frac{11\times 10\times 9}{6}$

= $\frac{990}{6}$

= $165$

5 0

3 years ago

Margie received her store order on 12/3/16 at 4AM. She just opened one of the

Cerrena [4.2K]

Answer:

Exp Date: 1/17/2017

Exp Time: 4:00am

Prep Date: 12/3/2016

Prep Time: 4:00am

Initials: 12/7/2016

Step-by-step explanation:

A well-detailed version of the question has been uploaded in form of an image for easier understand.

Looking at the question, it was said that she received her store order on 12/3/2016 at 4am, this implies that the prep date and time are 12/3/2016 and 4am respectively. Also, it was said that the expiration date was printed on the product and it is 1/17/2017. Obviously, the expiration time would also be 4am because it was prepared at 4am and if we calculate in. 24hours we would get 4am at the expiration date as well. Lastly, we were told she opened the product she received on 12/7/2016 which is the initial date the product was used. From all these we can deduce the following:

Exp Date: 1/17/2017

Exp Time: 4:00am

Prep Date: 12/3/2016

Prep Time: 4:00am

Initials: 12/7/2016

8 0

3 years ago

Given a normal distribution with mu equals 100μ=100 and sigma equals 10 commaσ=10, complete parts (a) through (d). loading...

m_a_m_a [10]

I believe the parts are:

A. What is the probability that Upper X greater than 95X>95?

B. What is the probability that Upper X less than 75X<75?

C.What is the probability that Upper X less than 85X<85 and Upper X greater than 125X>125?

D. 95% of the values are between what two X-values (symmetrically distributed around the mean)?

Solution:

We use the equation for z score:

z = (X – μ) / σ

Then use the standard normal probability tables to locate for the value of P at indicated z score value.

A. Z = (95 – 100) / 10 = - 0.5

Using the tables, the probability at z = -0.5 using right tailed test is:

P = 0.6915

B. Z = (75 – 100) / 10 = - 2.5

Using the tables, the probability at z = -2.5 using left tailed test is:

P = 0.0062

C. Z = (85 – 100) / 10 = - 1.5

Using the tables, the probability at z = -2.5 using left tailed test is:

P = 0.0668

Z = (125 – 100) / 10 = 2.5

Using the tables, the probability at z = 2.5 using right tailed test is:

P = 0.0062

So the probability that 85<X and X>125 is:

P(total) = 0.0668 + 0.0062

P(total) = 0.073

D. P(left) = 0.025, Z = -1.96

P(right) = 0.975, Z = 1.96

The X’s are calculated using the formula:

X = σz + μ

At Z = -1.96

X = 10 (-1.96) + 100 = 80.4

At Z = 1.96

X = 10 (1.96) + 100 = 119.6

So 95% of the values are between 80.4 and 119.6 (80.4< X <119.6).

7 0

3 years ago

Is my answer actually incorrect and if so how?

mr Goodwill [35]

Answer:

B. 0.159

A = taking history class

B= taking sociology class

P(A) = 0.051

P(B) = 0.32

A ÷ B = $\frac{0.051}{0.32}$

= 0.159 Rounded the the nearest hundredth

5 0

2 years ago