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3 years ago

Explain the relationship between the multiplication of natural numbers and the decision of decimals. Show an example.

Mathematics

1 answer:

blondinia [14]3 years ago

8 0

Answer:

When you multiply decimals, do not align the decimal points. Simply line up the numbers along the right hand side of the problem. Then multiply just as you would if the numbers were all whole numbers and add at the end.

Step-by-step explanation:

6.2 × 3.2= 19.84

62 × 32= 1984

Hope this helps:)

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PLEASE HELP. WILL MARK BRAINLIEST.

Alina [70]

Answer:

y = x² + 6x + 8

Step-by-step explanation:

The zeros ( x- intercepts ) of the graph are x = - 4 and x = - 2, thus

the factors are (x + 4) and (x + 2) and the function is the product of the factors.

y = a(x + 4)(x + 2) ← a is a multiplier

To find a substitute (0, 8 ) the y- intercept into the equation

8 = a(0 + 4)(0 + 2) = a(4)(2) = 8a ( divide both sides by 8 )

a = 1, thus

y = (x + 4)(x + 2) ← expand using FOIL

= x² + 6x + 8

6 0

3 years ago

Margaret drove to a business appointment at 80 mph. Her average speed on the return trip was 70 mph. The return trip took her 1/

Gnoma [55]

Margaret traveled 80 miles to the appointment.

Step-by-step explanation:

Given,

Speed while driving for appointment = 80 mph

Speed while coming back = 70 mph

Let,

x be the time taken for the trip

y be the distance covered

Distance = Speed*Time

y = 80x Eqn 1

Time taken in return trip = x+1/7

y = 70(x+1/7)

$y=70x+10$ Eqn 2

Putting value of y from Eqn 1 in Eqn 2

$80x=70x+10\\80x-70x=10\\10x=10$

Dividing both sides by 10

$\frac{10x}{10}=\frac{10}{10}$

x = 1 hour

Putting x = 1 in Eqn 1

$y=80(1) \\y=80$

Margaret traveled 80 miles to the appointment.

Keywords: linear equation, substitution method

Learn more about substitution method at:

#LearnwithBrainly

5 0

4 years ago

Ab/c=de make d the subject

denis-greek [22]

Answer:

Step-by-step explanation:

8 0

3 years ago

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ololo11 [35]

The third one I think btw if you get mad at this person

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3 years ago

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Write as a product of two polynomials.<br> (x-y)^2-a(y-x)

11Alexandr11 [23.1K]

Answer:

(x-y) (a+x-y)

Step-by-step explanation:

(y-x)=-(x-y)

-a(y-x) = a(x-y)

(x-y)^2 = (x-y)(x-y)

(x-y)(a + x - y)

3 0

4 years ago