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r-ruslan [8.4K]

3 years ago

6

How do you do a two step equation with a fraction

2 answers:

shutvik [7]3 years ago

7 0

The fraction symbolizes division. Divide, buddy.

Fittoniya [83]3 years ago

4 0

Actually you want to cross multiply most likely. How is the equation set up?

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Evaluate this expression <br> (-7--9)*(8+2)

Marizza181 [45]

Before we get started, it is good to remember PEMDAS - the acronym that tells you the order to carry out equations.

P = parentheses
E = exponents
M = multiplication
D = division
A = addition
S = subtraction

Knowing this, we should start by doing the equations <em>within </em>each parentheses.

$(-7 - -9) *(8 + 2)$
$(2) *(10)$

So we did the addition and subtraction pieces within each group leaving us with the above equation. Now let's multiply:

$(2)*(10) = 20$

20 is the answer.

5 0

3 years ago

Factorise this : 2p²-p-10

gizmo_the_mogwai [7]

Answer:

Step-by-step explanation:

p(2p-1)-10

8 0

2 years ago

The manufacturer of a certain brand of aluminum foil claims that the amount of foil on each roll follows a Normal distribution w

lilavasa [31]

Answer:

Given that the manufacturers claim is true, the probability that the sample mean area is 249.6 ft.² or less is 0.42074

Step-by-step explanation:

The manufacturer claims that mean amount of foil on each roll, μ = 250 ft²

The standard deviation of the measured amount of foil per roll, σ = 2 ft.²

The number of rolls tested by the restaurant, n = 10 rolls

The mean measured by the restaurant, $\overline x$ = 249.6

Taking the sample means as individual score, we have;

The z-score, of the sample mean is given as follows;

$z=\dfrac{\overline x -\mu }{\sigma }$

At $\overline x$ = 249.6, we have;

z = (249.6 - 250)/2 = -0.2

Therefore, the probability for a mean less than or equal to 249.6, we have;

The probability, P = P(z < -0.2) = 0.42074

The probability that the sample mean area is 249.6 ft.² or less given that the manufacturers claim is true, P = 0.42074.

7 0

3 years ago

Subtract 7/9 from 4 / 9

poizon [28]

The Answer is 3/9

7-4=3

6 0

2 years ago

Read 2 more answers

the cube shown is composed of 27 unit cubes. The top and bottom faces of the cube are painted red, and the other faces are paint

Musya8 [376]

Answer:

10

There are 16 blocks that are painted with 2 colors which are red and blue and 1 block that isn't painted

27-17 = 1

3 0

3 years ago

Read 2 more answers