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sesenic [268]
3 years ago
13

The ratio of boys to girls in the band is 3:6 if there are 81 students in the band how many boys are in the band

Mathematics
1 answer:
Alexandra [31]3 years ago
8 0

Answer:

27 boys

Step-by-step explanation:

The ratio of boys to girls is 3 to 6.  The total is (3+6) is 9.

Using the ratio of boys to total (3 to 9), we set it equal to the ratio of boys to total students (81)

3               b

---- = -------------

9          81

We can solve this using cross products.

3*81 = 9b

243 = 9b

Divide each side by 9

243/9 =9b/9

27 =b

There are 27 boys

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Solve for m. <br> 2(5m + 4) = 2 (3m - 10)
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3 0
3 years ago
A baseball stadium has 45,000 seats. If tickets have been brought for 5/8 of the seats for the next game, how many seats are sti
Nadusha1986 [10]

Subtraction is a mathematical operation that reflects the removal of things from a collection. The number of seats that are available in the stadium is 16,875.

<h3>What is subtraction?</h3>

Subtraction is a mathematical operation that reflects the removal of things from a collection. The negative symbol represents subtraction.

Given that a baseball stadium has 45,000 seats, out of this 45,000 seats, 5/8 of the seats are bought for the next game.

Therefore, the number of seats that are still available is,

Number of seats available

= Total number of seats - Seats already sold

= 45,000 - (45,000 × 5/8)

= 45,000 - 28,125

= 16,875

Hence, the number of seats that are available in the stadium is 16,875.

Learn more about Subtraction here:

brainly.com/question/1927340

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6 0
1 year ago
Which numbers are equivalent to 3/10
Sedbober [7]

Answer:

Multiply numerator and denominator with same number to gwt the answers . There are infinitely many numbers

3/10 × 2/2 = 6/20

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And so on

8 0
3 years ago
ONE HUNDRED POINTS
Over [174]

Answer:

See Below.

Step-by-step explanation:

We are given that ∠A = ∠D, and we want to prove that ΔACB ~ ΔDCE.

Statements:                                    Reasons:

1) \text{ $\angle A=\angle D$}                                    \text{Given}

2) \text{ }\angle BCA=\angle ECD                        \text{Vertical Angles Are Congruent}

3) \text{ } \Delta ACB \sim \Delta DCE                        \text{AA (Angle-Angle) Similarity}

5 0
3 years ago
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