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3 years ago

420 students went on a field trip. Ten buses were filled and 20 students traveled in cars. How many students were in each bus?

Mathematics

1 answer:

Gnoma [55]3 years ago

4 0

Answer:40

Step-by-step explanation:

420-20=400

400\20=40

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A=75(125+81/2) how do you this equation? pls Help!!!

Maru [420]

Closing parenthesis is misplaced. Should be:
A = h(b₁ + b₂)/2 

h = 75 ft 
b₁ = 125 ft 
b₂ = 81 ft 

Then it's just plug & grind: 

A = 75(125 + 81)/2 ft² = 75·206/2 ft² = 75·103 ft² = (7500 + 225) ft² = 7725 ft² 

If you follow that, it will guide you through any other, similar p

4 0

3 years ago

Read 2 more answers

Camellia earned $160 over the summer. If you put 80% of earnings into her savings account and spent 75% of the rest on a gift fo

In-s [12.5K]

Answer: She has left over $8.

Step-by-step explanation:

Hi, to answer this question we have to analyze the information given:

Camellia earned $160 and you put 80% of earnings into her savings account:

So, to obtain this number we have to multiply Camellia's earnings by 0.80 (the percentage in decimal form, 80 /100 = 0.80)

$160 x 0.80 = $128 (savings)

If we subtract the number obtained to Camellia's earnings:

$160 -$128 = $32 (money left without purchasing a gift)

She spent 75% of the rest on a gift for her

The rest is $32, so we have to multiply it by the percentage in decimal form (75/100=0.75)

$32 x 0.75 (decimal form) = $24

And finally, subtract that number to the original rest.

$32-$24 = $8

She has left over $8.

7 0

2 years ago

Read 2 more answers

A bicyclist races on a bicyclist with 13-inch-radius wheels. When she is traveling at a speed of 37 ft/sec, how many revolutions

drek231 [11]

Radius of a wheel = 13 inch
= 1.08333 ft
circumference of a wheel = 2×pi×r^2
= 2 × (22/7) × 1.08333^2 ft
= 2 × (22/7) × 1.1736 ft
= (44/7)×1.1736 ft
= 51.6384/7 ft
= 7.3769142857 ft
distance covered in one minute = 37 × 60 ft/min
= 2220 ft/min
now, revolution per minute = 2220 / 7.3769142857
= 300.93884
therefore her wheels are making 300.93884 revolutions per minute

8 0

3 years ago

The rectangular rug has side lengths of 3 and 4 ft. What is the length of the diagonal? Draw a picture of the problem and solve.

Nadusha1986 [10]

ANSWER

The length of the diagonal is 5 ft

EXPLANATION

The diagram of the rug with the diagonal is:

The diagonal and the sides form a right triangle, so we can use the Pythagorean theorem to find x, the length of the diagonal:

$\begin{gathered} x^2=3^2+4^2 \\ x=\sqrt[]{9+16} \\ x=\sqrt[]{25} \\ x=5 \end{gathered}$

7 0

1 year ago

If the area of the triangular kite is 24 square ft and its base is 4 feet, find the height of the kite.

beks73 [17]

Area of a triangle is A = (1/2) (b) (h). Here we are given A and b and need to find h.

A = 24 ft^2 = (1/2) (4 ft) (height)

24 = 2(height) => height is 12 ft (answer)

3 0

3 years ago