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3 years ago

What is the answer to this problem? And how do you work it? -3(x+2)=

Mathematics

2 answers:

torisob [31]3 years ago

4 0

I hope this helps you (-3).x+2. (-3) -3x-6

Marina CMI [18]3 years ago

3 0

-3(x+2)
(-3 *x) + (-3 *2) (Distributive Property)
SImplify
-3x - 6
-3x = 6
divide both sides by -3 then
-3x/-3 = 6/-3
simplify
x = -3

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The tent shown has fabric covering all four sides and the floor. What is the minimum amount of fabric needed to construct the te

Vesna [10]

Answer:

The answer is "152 ft"

Step-by-step explanation:

Please find the attached file.

The area of the square $(8 \times 5=40)$ can be found on the foot.

The area of the triangular front will then be calculated $(6\times 4=\frac{24}{2} = 12).$

Since each has two sides, $24+80=104$ .

Therefore the multiplying the area of the bottom square $(6\times 8=48)$ by the number of cells to get 152.

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2 years ago

What would X is less than or equal to negative 7 look like as a graph

Anastaziya [24]

Answer:

Place a dot on 7 and do < underlined

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3 years ago

Jennifer's saving to buy a bike. The bike costs $245. She has $125 saved, and each week she adds $15 to her savings. How long wi

Novosadov [1.4K]

It will take her 8 weeks to save up enough money for the bike.

To get the answer first you have to subtract 125 from 245 to see how much money she still has to save then divide the answer which is 120 by 15 and you get 8. Hope this helps!!

4 0

2 years ago

Read 2 more answers

A company has 31 salespeople. A board member at the company asks for a list of the top 4 salespeople, ranked in order of effecti

kvv77 [185]

Answer:

31465 ways

Step-by-step explanation:

Given data

Let us apply the combination formula

nCr = n! / r! * (n - r)!

n= 31

r= 4

substitute

= 31!/4!(31-4)!

= 31!/4!(27)!

= 31*30*29*28*27!/ 4!(27)!

= 31*30*29*28/4!

=31*30*29*28/4*3*2*1

=755160/24

=31465 ways

Hence there are 31465 possible ways to rank it

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2 years ago

Assume that hybridization experiments are conducted with peas having the property that for offspring, there is a 0.75 probabili

ivolga24 [154]

Answer:

(a) The mean and the standard deviation for the numbers of peas with green pods in the groups of 36 is 27 and 2.6 respectively.

(b) The significantly low values are those which are less than or equal to 21.8. And on the other hand, the significantly higher values are those which are greater than or equal to 32.2.

(c) The result of 15 peas with green pods is a result that is significantly low value.

Step-by-step explanation:

We are given that hybridization experiments are conducted with peas having the property that for offspring, there is a 0.75 probability that a pea has green pods.

Assume that the offspring peas are randomly selected in groups of 36.

The above situation can be represented as a binomial distribution;

where, n = sample of offspring peas = 36

p = probability that a pea has green pods = 0.75

(a) The mean of the binomial distribution is given by the product of sample size (n) and the probability (p), that is;

Mean, $\mu$ = n $\times$ p

= 36 $\times$ 0.75 = 27 peas

So, the mean number of peas with green pods in the groups of 36 is 27.

Similarly, the standard deviation of the binomial distribution is given by the formula;

Standard deviation, $\sigma$ = $\sqrt{n \times p \times (1-p)}$

= $\sqrt{36 \times 0.75 \times (1-0.75)}$

= $\sqrt{6.75}$ = 2.6 peas

So, the standard deviation for the numbers of peas with green pods in the groups of 36 is 2.6.

(b) Now, the range rule of thumb states that the usual range of values lies within the 2 standard deviations of the mean, that means;

$\mu - 2 \sigma$ = 27 - (2 $\times$ 2.6)

= 27 - 5.2 = 21.8

$\mu + 2 \sigma$ = 27 + (2 $\times$ 2.6)

= 27 + 5.2 = 32.2

This means that the significantly low values are those which are less than or equal to 21.8.

And on the other hand, the significantly higher values are those which are greater than or equal to 32.2.

(c) The result of 15 peas with green pods is a result that is a significantly low value because the value of 15 is less than 21.8 which is represented as a significantly low value.

5 0

3 years ago