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Ugo [173]
4 years ago
6

Solve the equation: 14w=91 Please and thank you!!

Mathematics
2 answers:
avanturin [10]4 years ago
5 0
You divide 91/14 to get w=6.5.
Rama09 [41]4 years ago
4 0
Let's talk about basic distribution on equations.

You equation is 14w = 91. You need to find w

What it is essentially saying is, "What times 14  equals to 91?" The main way to find what w is is to first look at the equation:

14w is basically saying 14 times w. What you need to do is to isolate "w" by itself in one side. To keep it simple, we will keep the w in the left side.

Essentially, the next step is to divide 14 on EACH side. This is essential to do it on each side to make the equation still equal and be valid

What it would look like is this:
\frac{14w}{14} =  \frac{91}{14}

\frac{14w}{14}. The 14 cancels out to be 1, therefore w is resulted to be by itself. The other side is \frac{91}{14}. This simplifies to \frac{13}{2}.

The final result will be: w = \frac{13}{2} or 6.5 as a decimal




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3x−12≥15<br><br> 2x−5≤9<br><br> 5x+8≤53<br><br> 3x−5≥16
zalisa [80]

Answer:

Step-by-step explanation:

A) 3x−12≥15

3x ≥ 15 + 12

3x ≥ 27

or x≥ 9

B) 2x−5≤9

2x ≤ 9 +5

2x ≤ 14

or x ≤ 7

C) 5x+8≤53

5x ≤ 53 -8

5x ≤ 45

or x ≤ 9

D) 3x−5≥16

3x ≥ 16 + 5

3x ≥ 21

or x ≥ 7

Have a good day!

8 0
3 years ago
Multiply. Write your answer as a fraction in simplest form. −1/4×(−4/3)=
Sophie [7]

Answer:

\frac{1}{3}

Step-by-step explanation:

Given

- \frac{1}{4} × - \frac{4}{3} ( negative times negative = positive )

= \frac{1}{4} × \frac{4}{3} ( cancel the 4 on the numerator and denominator )

= \frac{1}{3}

5 0
3 years ago
I don’t know how to solve this problem,
xxTIMURxx [149]

Answer:

380/week

Step-by-step explanation:

all u do is 1520 divide by 4 (bc he makes 1520 in 4 weeks) and that would equal 380 per week.

hoped that helped:P

6 0
2 years ago
Read 2 more answers
In a completely randomized experimental design, three brands of paper towels were tested for their ability to absorb water. Equa
arlik [135]

Answer:

Yes. At this significance level, there is evidence to support the claim that there is a difference in the ability of the brands to absorb water.

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>The significance level is 0.05.</em>

<em>The data is:</em>

<em>Brand X: 91, 100, 88, 89</em>

<em>Brand Y: 99, 96, 94, 99</em>

<em>Brand Z: 83, 88, 89, 76</em>

We have to check if there is a significant difference between the absorbency rating of each brand.

Null hypothesis: all means are equal

H_0:\mu_x=\mu_y=\mu_z

Alternative hypothesis: the means are not equal

H_a: \mu_x\neq\mu_y\neq\mu_z

We have to apply a one-way ANOVA

We start by calculating the standard deviation for each brand:

s_x^2=30,\,\,s_y^2=6,\,\,s_z^2=35.33

Then, we calculate the mean standard error (MSE):

MSE=(\sum s_i^2)/a=(30+6+35.33)/3=71.33/3=23.78

Now, we calculate the mean square between (MSB), but we previously have to know the sample means and the mean of the sample means:

M_x=92,\,\,M_y=97,\,\,M_z=84\\\\M=(92+97+84)/3=91

The MSB is then:

s^2=\dfrac{\sum(M_i-M)^2}{N-1}\\\\\\s^2=\dfrac{(92-91)^2+(97-91)^2+(84-91)^2}{3-1}\\\\\\s^2=\dfrac{1+36+49}{2}=\dfrac{86}{2}=43\\\\\\\\MSB=ns^2=4*43=172

Now we calculate the F statistic as:

F=MSB/MSE=172/23.78=7.23

The degrees of freedom of the numerator are:

dfn=a-1=3-1=2

The degrees of freedom of the denominator are:

dfd=N-a=3*4-3=12-3=9

The P-value of F=7.23, dfn=2 and dfd=9 is:

P-value=P(F>7.23)=0.01342

As the P-value (0.013) is smaller than the significance level (0.05), the null hypothesis is rejected.

There is evidence to support the claim that there is a difference in the ability of the brands to absorb water.

3 0
3 years ago
Answer please no links or files
Naddik [55]

Answer:

120

Step-by-step explanation:

4 0
3 years ago
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