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3 years ago

Help me please with this Simplify. 5a-12a

1 answer:

4 0

It helps to imagine the variable a sort of as a unit. Like with 5 minus 12 lemons, it has no bearings on the addition/subtraction here.

Factor out a and subtract.

$5a-12a \\ (5-12)a \\ \boxed{-7a}$

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3(7+x to the power of two);x=2

JulijaS [17]

Answer:

$33$

Step-by-step explanation:

$3(7+x^{2}); x=2$

$=3(7+2^{2})$

$=3(7+4)$

$= 33$

5 0

1 year ago

Two researchers, Jaime and Mariya, are each constructing confidence intervals for the proportion of a population who is left-

soldi70 [24.7K]

Answer:

Jaime's. Interval not centered around the point estimate.

Step-by-step explanation:

When constructing a confidence interval based on a point estimate, the obtained point estimate must be the central value of the interval.

For Jaime's interval

Lower bound = 0.078

Upper Bound = 0.193

$Central = \frac{0.078+0.193}{2} =0.1355$

For Mariya's interval

Lower bound = 0.051

Upper Bound = 0.189

$Central = \frac{0.051+0.189}{2} =0.12$

For a point estimate of 0.12, only Mariya's interval is adequate since Jaime's is not centered around the point estimate.

4 0

2 years ago

Evaluate the expression for x = 3 y= 1/3 and z= 5. 12 x - 3y over 4 x - Z

Zepler [3.9K]

Answer:

35.786

12(3) - 3(1/2)/4(3) - 5

This is then further simplified to:

36 - 1.5/7

And when you divide 1.5 by 7, the number (rounded) is .214.

Thus, subtract, and gain the final answer of 35.786.

Hope this helps!

Step-by-step explanation:

Can you please mark me brainliest

6 0

3 years ago

Solve for x: 2(x-3)+5=4-7(2x-1)

Marat540 [252]

Solve for x by simplifying both sides of the equation , then isolating the variable
your answer is x=3/4

3 0

2 years ago

PLS HELP THIS IS DUE TONIGHT

Molodets [167]

The answer is A, B, and C

3 0

3 years ago

Read 2 more answers