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3 years ago

The tength of a picture frame is 12 cm more than twice the width. If the perimeter is 204cm, find the

Mathematics

1 answer:

alekssr [168]3 years ago

8 0

Answer:

30cm x 72 cm

Step-by-step explanation:

The perimeter is the measurements of all sides added together. Let's start by dividing the perimeter by 2, so we have the sum of the length and width. This gives us 102cm. Let's call the width x, and the length y. We know y is x times 2 plus 12. (2x + 12) So, we know [x + y = x + (2x + 12)]. So let's solve.

x + y = x + (2x + 12)

102 = x + (2x + 12)

102 = 3x + 12

102 - 12 = 3x + 12 - 12

90 = 3x

90/3 = 3x/3

30 = x

The width is 30cm.

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Line CD contains points A (4, 6) and B (4, 3). The slope of line CD is (2 points)

Nadya [2.5K]

Answer:

slope is undefined

Step-by-step explanation:

Calculate the slope m using the slope formula

m = $\frac{y_{2}-y_{1} }{x_{2}-x_{1} }$

with (x₁, y₁ ) = A(4, 6) and (x₂, y₂ ) = B(4, 3)

m = $\frac{3-6}{4-4}$ = $\frac{-3}{0}$

Division by zero is undefined thus the slope of CD is undefined

7 0

3 years ago

a marble is drawn at random from a bag which contains nine yellow marbles and six white marbles . Find the probability of white

Mamont248 [21]

Answer:

2/5

Step-by-step explanation:

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3 years ago

A rectangular tank measures 16 cm by 9 cm by 10 cm. How many milliliters of water are in the tank when it is full? How many lite

trapecia [35]

Answer:

1,440 cubic centimeter = 1,440 milliliters

1,440 cubic centimeter= 1.44 liters

Step-by-step explanation:

Volume of the rectangular tank = length × width × height

Length = 16 cm

Width = 9 cm

Height = 10 cm

Volume of the rectangular tank = length × width × height

= 16 cm × 9 cm × 10 cm

= 1,440 cm³

Volume of the rectangular tank = 1,440 cm³

How many milliliters of water are in the tank when it is full?

1 cubic centimeter = 1 milliliter

1,440 cubic centimeter = 1,440 milliliters

How many liters?

1 cubic centimeter = 0.001 liters

1,440 cubic centimeter= 1.44 liters

7 0

3 years ago

2+90=? please someone help asap

Oxana [17]

Answer:

92 :)

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Papi sold candles at the fair. She sold $169.74 on Friday, $235.95 on Saturday and $219.21 on Sunday. What were her average sale

Galina-37 [17]

To find the average you would add the three numbers together 169.74+235.95+219.21
to get a total of $624.90 divide that number by 3 to get the average which is $208.30 as the average sale per day

7 0

3 years ago