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3 years ago

Select the expression that is equivalent to 12n+8

Mathematics

2 answers:

HACTEHA [7]3 years ago

8 0

A, you combine like terms.
a) 11n-4+n+12
11n+n=12n
-4+12=8
12n+8

Naddik [55]3 years ago

5 0

The correct answer is a.

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With three boys on a large scale, it read 170 pounds. When Adam stepped off, the scale read 100 pounds. When both Adam and Ben s

Elden [556K]

Answer:

Adam = 70 pounds

Ben = 40 pounds

C = 60 pounds

Step-by-step explanation:

We can work out some equations based on the given information:

We can call the boys A, B and C

so,

when all three boys are standing on the scale, it reads 170 pounds.

$A + B + C = 170$ - Eq(1)

when Adam stepped off, the scale reads 100. This means that the combined weight of the remaining two boys is 100.

$B + C = 100$ - Eq(2)

when both Adam and Ben stepped off, the weight of the remaining boy is shown on the scale.

$C = 60$

So we already knew the weight of boy C. (it was in the question all along)

$C = 60$ pounds

Now to find the individual weights of the remaining boys, we can work our way backwards

we can put this value back in Eq(2), to find the weight of boy B.

$B + C = 100$

$B + 60 = 100$

$B = 100 - 60$

$B = 40$

the

the weight of boy B (Ben) is $B = 40$ pounds

now we can put all of the known weights of the boys in Eq(1) to find the weight of Boy A.

$A + B + C = 170$

$A + 40 + 60 = 170$

$A + 100 = 170$

$A = 170 - 100$

$A = 70$

the weight of boy A (Adam) is $A = 70$ pounds

The Answer:

Adam = 70 pounds

Ben = 40 pounds

C = 60 pounds

7 0

4 years ago

I have no clue what the answer is please help me?

dedylja [7]

Answer:

Step-by-step explanation:

in the quadratic equation: ax^2+bx+c,

in order to factor when a=1, then we need to find values that add to b and multiply to c.

8 0

3 years ago

Read 2 more answers

Two variables are defined, a regression equation is given, and one data point is given.

rusak2 [61]

Answer:

Predicted height: 57.42 inches

Residual: 2.58 inches

Step-by-step explanation:

Regression Equation

The regression equation for the height of the children (Hgt) and their age (Age) is given by the expression

Hgt = 24.3 + 2.76(Age)

We must compare the predicted value of the equation vs the real data point Age=12, Height=60

Computing the predicted height

Hgt = 24.3 + 2.76(12)

Hgt=57.42 inches

The residual is the difference between the real data point and the predicted value

R=60-57.42

R=2.58 inches

6 0

3 years ago

Which expression would you use to determine the missing number in the sequence? 12, ____, 26, 33, 40

Paladinen [302]

Answer:

The answer is 19.

Step-by-step explanation:

This is because the sequence adds up by 7 each time. Have a nice day!

4 0

3 years ago

Read 2 more answers

Please help. I think I know but I'd like to have it confirmed.

V125BC [204]

Part 1
$40 \times 10.5 = 402$
Part 2
$40 \times 10.5 + 5 \times 1.5 \times 10.5 \\ = 402 + 78.75 \\ = 480.75$

4 0

3 years ago