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Lapatulllka [165]
3 years ago
6

Ericka is selling baked goods. She sells x cookies for $0.70

Mathematics
2 answers:
shutvik [7]3 years ago
8 0

Answer:

.70x + 14.50= 36.90    x=32

Step-by-step explanation:

0.7x=36.9-14.5

0.7x=22.4

x=32

snow_lady [41]3 years ago
4 0

Answer:

i believe the correct answer here is 53

Step-by-step explanation:

so if 1 cookie is 70 cents, then you determine how many cookies is $36.90

you use proportion and say(convert to cents)

70: 1

3690: more

and calculating using proportion, you get 52.714285714286 and when you round it off it's 53. to prove your answer you say 0.7 × 52.7 = 36.9

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Write .27 as a fraction in simplest form.
Debora [2.8K]

Answer:

27/100

Step-by-step explanation:

It's in the hundreths,

so we just put 27 over 100

8 0
2 years ago
68.40 5% what is the original price
olga2289 [7]

The original price would be $72. Hope this is right, and helps you.

3 0
3 years ago
9.2% written as a decimal is
nekit [7.7K]

the answer will be 0.092 as a decimal

5 0
2 years ago
The question is below
Ad libitum [116K]

Answer:

£59.25

Step-by-step explanation:

Hello!

To solve this problem, we must:

  1. Solve for the length of the fence (aka height)
  2. Find the area of the lawn (trapezoid)
  3. Find the number of cans needed
  4. Find the price of all the cans

Area of a trapezoid, and why the formula works:

A trapezoid is a quadrilateral with one set of parallel sides known as bases. The other two sides are known as the legs.

To find the area of a trapezoid, we use the formula:

\frac{B_1 + B_2}{2}* h

This works because if we used the formula, we would be duplicating the trapezoid to form a rectangle with a side length of B1 + B2, and a height of h. Since the trapezoid is half of that, we divide by 2.

Solve for height:

The height is unknown but can be found using the Pythagorean Theorem.

The difference between the bases is the length of the bottom leg of the right triangle, and 17 is the hypotenuse.

Difference = 20 - 12 = 8

Hypotenuse = 17

  • 8² + fence² = 17²
  • 64 + fence² = 289
  • 225 = fence²
  • fence = 15

The height is 15

Solve for area:

Now we can solve for the area.

  • A = \frac{B_1 + B_2}{2} * h
  • A = \frac{12 + 20}{2} * 15
  • A = \frac{32}{2} * 15
  • A = 16 * 15 = 240

The area is 240

Cans:

The area of the lawn is 240 square meters. Each can cover 100 square meters.

  • 240 ÷ 100 = 2.4

Since we can't use part of a can, we round up to three whole cans.

The price of 3 cans :

  • 3 * 19.75
  • 59.25

£59.25

The Pythagorean Theorem:

The Pythagorean theorem is a very common geometry formula used to find the length of the hypotenuse in a right triangle, given the lengths of the two other bases.

The formula is : a^2 + b^2 = c^2

  • a is a leg
  • b is a leg
  • c is the hypotenuse

Images attached for your reference

7 0
2 years ago
And aquarium tank hold 169 gallons of water. How much is this in meters? Use the following conversion: 1 gallon is 3.8 m.
Mkey [24]
642.2 is the answer if you multiply 3.8x169
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