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3 years ago

a box of cereal contains 23.4 ounces it cost 5.49 what is the cost to the nearest cent of cereal per ounce

Mathematics

1 answer:

algol133 years ago

6 0

23 cents is the correct answer

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Plz help ToT I'm horrible at math

cluponka [151]

Answer:

24 Square Inches

Step-by-step explanation:

7 0

2 years ago

A rectangular field with perimeter of 80m is to have an area of at least 380m² . Describe the possible lengths and of the field.

Kryger [21]

$let \: x \: be \: the \: length \\ let \: y \: be \: the \: width$

$perimeter = 2x + 2y \\ area = xy$

$2x + 2y = 80 \\ xy = 380 \\ \\ x + y = 40 \\ xy = 380 \\ \\ x = 40 - y \\ (40 - y)y = 380$

$40y - y {}^{2} = 380 \\ y {}^{2} - 40y + 380 = 0 \\ y {}^{2} - 40y + 400 = 20 \\ (y - 20) {}^{2} = 20 \\ y - 20 =± \sqrt{20} \\ y_{1}=20-√20≈15.52786\\ y_{2}=20+√20≈24.4721$

6 0

2 years ago

5. A monument casts a 78 ft. shadow at the same time that a vertical yardstick casts a 4.5 ft. shadow. How high is the monument?

rodikova [14]

Hello,

Using Thalès 's theorem:

Let's h the height of the monument.

$\dfrac{1}{h} =\dfrac{4.5}{78} \\\\h=\dfrac{78}{4.5} =\dfrac{156}{9} \approx{17.3\ (ft)}$

If you don't know what is the Thalès's theorem,

imagine that the similar triangles.

5 0

2 years ago

Fabio has run five eighths of the race. What fraction of the race remains?

Pavel [41]

Answer:

$\frac{3}{8}$

Step-by-step explanation:

<h2><u>Fractions </u></h2>

since $\frac{5}{8}$ has been completed

the remaining would be :

$\frac{8}{8} -\frac{5}{8}$

since <em>denominators are the same </em>

= $\frac{8 - 5}{8} \\\\$

= $\frac{3}{8}$

<u>the fraction of the race that is remaining is 3/8</u>

7 0

2 years ago

Read 2 more answers

Please give me an equation for this situation

asambeis [7]

Answer:

y=8.50x

Where y is the total cost and x is the number of cars washed

Step-by-step explanation:

Divide 93.50 by 11 and you get 8.50. When you divide 195.50 by 23, you still get 8.50. Therefore, the cost of the car wash is 8.50 per car.

3 0

2 years ago

Read 2 more answers