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4 years ago

if postage costs $0.54 for the first once and $0.22 for each additional ounce, calculate the cost of mailing a 10-once envelope

Mathematics

2 answers:

Dvinal [7]4 years ago

8 0

You would just multiply $0.22 8 times then add the $0.54 to it and you get $2.30

photoshop1234 [79]4 years ago

6 0

$2.74 because the first one is 54 cents so that is one away from the nine. multiply the 22 cents by 9. then add the 54 cents

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3 years ago

Read 2 more answers

Dilate a triangle with vertices (0,0), (0,2) and (2,0) using the scale factor k=3. What is the value of the ratio (new to origin

seropon [69]

Answer:

Part a) The ratio of the perimeters is $3$

Part b) The ratio of the areas is $9$

Step-by-step explanation:

Part A) What is the value of the ratio (new to original) of the perimeters?

we know that

If two figures are similar, then the ratio of its perimeters is equal to the scale factor

Let

z-----> the scale factor

x-----> the perimeter of the new triangle

y-----> the perimeter of the original triangle

$z=\frac{x}{y}$

we have

$z=3$

substitute

$\frac{x}{y}=3$

Part B) What is the value of the ratio (new to original) of the areas?

we know that

If two figures are similar, then the ratio of its areas is equal to the scale factor squared

Let

z-----> the scale factor

x-----> the area of the new triangle

y-----> the area of the original triangle

$z^{2}=\frac{x}{y}$

we have

$z=3$

substitute

$\frac{x}{y}=3^{2}$

$\frac{x}{y}=9}$

3 0

4 years ago

If x = 3, calculate the value of: 2x2 + x

Molodets [167]

2x = 2 * 3 = 6

6^2 = 6*6 = 36

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Answer: 39

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3 years ago

Someone pls help i’m desperate

Ulleksa [173]

Answer:

<u>Filling in the blanks:</u>

1. Opposite
2. C
3. Opposite

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3 years ago

the hypotenuse of a 45°-45°-90° triangle measures 128 cm. What is the length of one leg of the triangle? 64 cm cm 128 cm cm

Kisachek [45]

Answer:

length of one leg of the triangle is 64 cm.

Step-by-step explanation:

Given : The hypotenuse of a 45°-45°-90° triangle measures 128 cm.

To find : What is the length of one leg of the triangle.

Solution : We have given that hypotenuse of a 45°-45°-90° triangle measures 128 cm.

By the 45°-45°-90° triangle rule ,

Perpendicular sides (legs) are equal .

Hypotenuse = √2 × either perpendicular side ( leg ).

128 = √2 × leg .

We can write 128 as 64 √2 and substitute in above

64√2 = √2 leg.

On dividing by √2 both sides and switching sides.

leg = 64 cm .

Therefore, length of one leg of the triangle is 64 cm.

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3 years ago