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4 years ago

3. Solve the following: 2/3 + 1/5 + 1/6 =

Mathematics

1 answer:

AlekseyPX4 years ago

8 0

Answer:

1 1/30

Step-by-step explanation:

2/3+1/5+1/6=

Find the common denominator---30

2/3=20/30

1/5=6/30

1/6=5/30

Add up all numerators---20+6+5=31

31/30

Simplify---1 1/30

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How many Solutions does this equation have<br> -2(5x + 6) = 2( -5x - 1)

vazorg [7]

None. Because when you solve for x, x is eliminated.

6 0

3 years ago

How do you do this problem?

White raven [17]

You can find the scale factor by dividing like values from one another. For example CA is the counterpart of PU. So to find the scale factor you would divide the transformed value by the original value. 4/12 is 1/3 so the scale factor is 1/3

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3 years ago

Which of the following shows how to write 8,240 pennies as<br> dollars?

olasank [31]

Answer:

$ 82.40

Step-by-step explanation:

you divide

100 pennies in a dollar

8240/100=82.40

5 0

3 years ago

Nat2105 [25]

Answer:

30 centimeters.

Step-by-step explanation:

The scale between the rectangles is 1 to 3, so the larger one is three times bigger than the smaller one, that is, all the sides of the rectangle are three times bigger.

So, We know that the formula to calculate the perimeter of a rectangle is:

P = 2L + 2W

Where P is the perimeter, L is the lenght and W is the width.

If the lenght and the width of the bigger rectangle are three times bigger, we have that its perimeter, related to the perimeter of the smaller rectangle, will be:

(bigger rectangle: P1, L1 and W1; smaller rectangle: P2, L2 and W2)

P1 = 2*L1 + 2*W1 = 2*3*L2 + 2*3*W2 = 3*(2*L2 + 2*W2) = 3*P2

If P1 = 90 centimeters, we have that:

90 = 3*P2 -> P2 = 30 centimeters.

The perimeter of the smaller rectangle is 30 centimeters.

7 0

3 years ago

A mixture of 30 pounds of candy sells for $1.10 a pound. The mixture consists of chocolates worth $1.50 a pound and chocolates w

Allushta [10]

Answer: Option 'B' is correct.

Step-by-step explanation:

Number of pounds of candy = 30

Cost per pound = $1.10

Total amount would be

$30\times 1.10\\\\=33$

Let the number of pound that sold at $1.50 per pound be 'x'.

Let the number of pound that sold at 90 cents per pound be '30-x.

According to question, we get that

$1.5x+0.90(30-x)=33\\\\1.5x+27-0.90x=33\\\\1.5x-0.9x=33-27\\\\0.6x=6\\\\x=\dfrac{6}{0.6}=10$

Hence, there are 10 pounds of chocolates worth $1.50 per pound.

Therefore, Option 'B' is correct.

8 0

3 years ago