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Karolina [17]
3 years ago
15

Evaluate and simplify the following expression for the given values​

Mathematics
1 answer:
zubka84 [21]3 years ago
5 0

Answer:

-88

Step-by-step explanation:

-a² + 4ab - b²

Substitute the variables with the numbers given.

-2² + 4(2×-6) - -6²

-2² + 4(-12) - -6²

-4 + 4(-12) - 36

-4 + -48 - 36

-52 - 36 =

-88

(im starting 8th grade tommorow and im doing this cause im bored and i should practice xD)

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Josiah buys cheese and onions at the store. He pays a total of $35.41. He pays a total of $6.26 for the cheese. He buys 5 bags o
dezoksy [38]

Answer:

5.83

Step-by-step explanation:

5x + 6.26 =  35.41

      -6.26    -6.26

5x = 29.15

\frac{5x}{5} =\frac{29.15}{5}

x = 5.83

Each bag of onions costs $5.83.

5 0
3 years ago
If the data point is at (3, 10.5) and the prediction equation is y = -6.1x + 12.5, what is the value of the residual for this da
Keith_Richards [23]

Given:

The data point is (3,10.5).

The prediction equation is y=-6.1x+12.5.

To find:

The value of the residual for this data point.

Step-by-step explanation:

The data point is (3,10.5). So, the actual value is 10.5 at x=3.

Prediction equation is

y=-6.1x+12.5

Putting x=3, we get

y=-6.1(3)+12.5

y=-18.3+12.5

y=-5.8

The formula for residual is:

Residual = Actual value - Expected value

Residual=10.5-(-5.8)

Residual=10.5+5.8

Residual=16.3

Therefore, the residual for the given data point is 16.3.

6 0
3 years ago
Solve the inequality <br> g/-100=6
kkurt [141]

Answer:

g = -600

Step-by-step explanation:

4 0
3 years ago
He value represented by the 2 in 423 is times the value represented by the 2 in 72.
melisa1 [442]
It is 1/10 times the value represented in the 2 in 423.
It is 10 times the value represented in the 2 in 72
3 0
4 years ago
7.50 = 3 = 2.50
11111nata11111 [884]

Answer:

y=2.5x

Step-by-step explanation:

You already know that the cost for 1 book is $2.50, which is also the rate of change. So you just basically multiply 2.50 by 5 to get 12.50.

4 0
3 years ago
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