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2 years ago

Which table shows the correct methods used to justify the solution steps?

Mathematics

2 answers:

EleoNora [17]2 years ago

8 0

Answer:

x = 8

Step-by-step explanation:

Step 1 : Simplify the equation

3(x-5) + 7x = 65

3x - 15 + 7x = 65

Step 2 : Make x the subject

3x + 7x = 65 + 15

10x = 80

x = 80/10

x = 8

Pie2 years ago

8 0

Answer:

The answer is B

Step-by-step explanation:

The reasoning behind this is because in the second step, if you were to add all of the numbers you would get the solution of -5x or something like that.

Hope this helps!

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Data were collected on random specimens of Yellowfin tuna from 1991 and 2010. For the sample of 231 specimens of Yellowfin tuna,

Molodets [167]

Answer:

95% confidence interval: (0.325 ,0.383)

Step-by-step explanation:

We are given the following in the question:

Sample size, n = 231

Sample mean = 0.354 ppm

Sample standard deviation = 0.231 ppm

95% confidence interval:

$\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}$

Putting the values, we get,

$t_{critical}\text{ at degree of freedom 4 and}~\alpha_{0.01} = \pm 1.97$

$0.354 \pm 1.97(\dfrac{0.231}{\sqrt{231}} ) = 0.354 \pm 0.029 = (0.325 ,0.383)$

6 0

3 years ago

Solve for the value of: 14/5 =z/25

ryzh [129]

Answer:

Solve for

by simplifying both sides of the equation, then isolating the variable.

Step-by-step explanation:

Hope I helped

8 0

2 years ago

HELP I NEED THIS ANSWER ASAP

tester [92]

Answer:

10.4% or 13/125

Step-by-step explanation:

5 perfect squares in the set of numbers

13 odd numbers

(5/25) x (13/25) = 0.104

0.104 x 100 = 10.4%

i hope its right

4 0

1 year ago

Which of the following equations is equivalent to x - y = 6?

Agata [3.3K]

I believe the answer would be A. 2x-y=6 :)

8 0

3 years ago

Read 2 more answers

The student council wants to rent a ballroom for the junior prom. The ballroom's rental rate is $1500 for 3h and $125 for each a

Tems11 [23]

They can afford only 5 1/2 hours

3 0

3 years ago