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4 years ago

Please help! Explain step by step pls :) (The question is on the image that i attached)

Mathematics

2 answers:

Ivanshal [37]4 years ago

7 0

Answer:

Step-by-step explanation:

6(-8)/-12 -1

Now, multiply

-48/-12=4

Now, divide.

4-1=3

and your last step should be subtracting.

juin [17]4 years ago

5 0

Answer:

Step-by-step explanation:

6(-8)/-12 -1

Multiply.

-48/-12=4

Divide.

4-1=3

Subtract.

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What is the sign of the product (−4)(2)(−3)(6)?

solong [7]

Answer: negative ; -144 sowwy if im wrong

Step-by-step explanation:

-4, 2, -3 , 6

-4 times -3 = -12

6 times 2 = 12

-12 times 12 = -144

5 0

3 years ago

Read 2 more answers

at the craft store , alan bought a bag of orange and green marbles. the bag contained 25 marbles, and 40% of them where orange.

Kazeer [188]

Answer:

There are 10 orange marbles

Step-by-step explanation:

There are 25 marbles in the bag

40% are orange

To determine the number of orange marbles, we multiply the total number of marbles by the percent that are orange

25 *40% = number of orange marbles

25*.40

There are 10 orange marbles

4 0

3 years ago

Read 2 more answers

What number is 21% of 450?

Akimi4 [234]

Answer:

94.5

Step-by-step explanation:

450 / 100 = 4.5

4.5 * 21 = 94.5

HOPE THIS HELPS

PLZ MARK BRAINLIEST

3 0

3 years ago

A study indicates that 37% of students have laptops. You randomly sample 30 students. Find the mean and the standard deviation o

Brilliant_brown [7]

Answer:

The mean and the standard deviation of the number of students with laptops are 1.11 and 0.836 respectively.

Step-by-step explanation:

Let X = number of students who have laptops.

The probability of a student having a laptop is, P (X) = p = 0.37.

A random sample of n = 30 students is selected.

The event of a student having a laptop is independent of the other students.

The random variable X follows a Binomial distribution with parameters n and p.

The mean and standard deviation of a binomial random variable X are:

$\mu=np\\\sigma=\sqrt{np(1-p)}$

Compute the mean of the random variable X as follows:

$\mu=np=30\times0.37=1.11$

The mean of the random variable X is 1.11.

Compute the standard deviation of the random variable X as follows:

$\sigma=\sqrt{np(1-p)}=\sqrt{30\times0.37\times(1-0.37)}=\sqrt{0.6993}=0.836$

The standard deviation of the random variable X is 0.836.

5 0

3 years ago

10. The perimeter of a triangle is 48'. The sides are in the ratio of 1 to 2 to 3. Find the three sides.

pentagon [3]

Answer:

Step-by-step explanation:

The sides are in the ratio 1:2:3, so the lengths of the sides are 1x, 2x, 3x.

1x + 2x + 3x = 48'

6x = 48'

x = 8'

The lengths of the sides are 8', 16', 24'

4 0

3 years ago