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In-s [12.5K]
3 years ago
5

7x(-3) x (-2)^2 help please!

Mathematics
2 answers:
Tanya [424]3 years ago
7 0

Answer:

7\times (-3) \times  (-2)^2=-21\times 4=-84

Step-by-step explanation:

Multiplication :

Multiplication means to add equal groups or we can say multiplication is repeated addition . We use symbol × to denote multiplication .

Consider a bag containing 5 balls then 7 bags will contain 5+5+5+5+5+5+5=7+7+7+7+7=35 balls or we can directy say that 5 bags will contain 5×7 = 35 balls .

If we are saying 6 times 8, it means 8+8+8+8+8+8 = 6+6+6+6+6+6+6+6 .

i.e 8 is added 6 times or 6 is added 8 times .

In problem 7×9 = 63 , 7 and 9 are factors and 63 is the product .

To find : 7\times (-3) \times  (-2)^2

Solving 7\times (-3) :

7\times (-3)=(-3) +(-3)+(-3)+(-3)+(-3)+(-3)+(-3)=-21

Solving (-2)^2 :

(-2)^2=(-2)\times (-2)=4

Therefore ,

7\times (-3) \times  (-2)^2=-21\times 4=-84

Anvisha [2.4K]3 years ago
5 0
    [7×(-3)]   ×   (-2)²
=     (-21)    ×    4
=             -84
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In a geometric sequence each number after the first is found by multiplying the previous number by a fixed number called the common ratio.

In an arithmetic sequence, each term is equal to the previous term plus or minus a constant called the common difference.

In your problem we have a sequence of numbers that appears to be decreasing in value, but on the surface it doesn't appear to be by any constant number... but if you look closely, the denominator 34 is exactly twice the other denominator 17. This would lead me to look at a common denominator to see if anything takes shape...

9/17 = 18/34
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Now we see that each number is the previous number minus 3/34, so we have a common difference of 3/34.

This would match the definition of an arithmetic sequence and NOT a geometric sequence.
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What is the volume of a cylinder in cubic feet with a height of 8 feet and a base diameter of 18 feet
postnew [5]

Answer:

The volume of a cylinder:

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Step-by-step explanation:

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h = height

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V = \pi (\frac{18}{2})^2  8

-Then, you solve:

V = \pi (\frac{18}{2})^2  8

V = \pi \times (\frac{18}{2})^2 \times  8

V = \pi \times (9)^2 \times  8

V = \pi \times 81 \times  8

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8 0
3 years ago
HELP ME PLEEASE!
vlabodo [156]
The answer would be 0.5
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3 years ago
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The simple interest equation that represent the situation is A = t/5

<h3>What is simple interest?</h3>

Simple Interest (S.I.) is the method of calculating the interest amount for a particular principal amount of money at some rate of interest. For example, when a person takes a loan of 500 dollars, at a rate of 10 per annum for two years, the person's interest for two years will be S.I. on the borrowed money.

Principal(P) borrowed =  $2

Rate(R) in percentage = 10

time in years = t

Simple interest(A) = P X R X t / 100

A = 2 X 10 X t/ 100

After reducing 20/100 to the lowest term

A = t/5

In conclusion the simple interest(A) = t/5

Learn more about simple interest: brainly.com/question/20690803

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5 0
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