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2 years ago

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likoan [24]2 years ago

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There are 28 students in the class. Sixteen of those students are girls. What percentage of the class is girls?

IrinaK [193]

$\text {Total students = 28}$

$\text {Total girls = 16}$

$\text {Percentage of girls in the class = } \dfrac{16}{28} \times 100$

$\text {Percentage of girls in the class = } \dfrac{1600}{28}$

$\text {Percentage of girls in the class = } \57.14 \ \%$

8 0

2 years ago

Which expression represents the perimeter of the model shown below? PLEASE HELP

devlian [24]

P = 2(L) +2(W)
P = 2(4x+3) + 2(2x)

answer
B. 2(4x+3) + 2(2x)

3 0

2 years ago

Read 2 more answers

A taxi driver had 27 fares to and from the airport last Monday. The price for a ride to the airport is $14, and the price for a

OLga [1]

Answer:

(15, 12)

Step-by-step explanation:

Let's generate two systems of equations that fit this scenario.

Number of trips to the airport = x

Number of trips from the airport = y

Total number of trips to and from the airport = 27

Thus:

$x + y = 27$ => equation 1.

Total price for trips to the Airport = 14*x = 14x

Total price of trips from the airport = 7*y = 7y

Total collected for the day = $294

Thus:

$14x + 7y = 294$ => equation 2.

Multiply equation 1 by 7, and multiply equation 2 by 1 to make both equations equivalent.

7 × $x + y = 27$

1 × $14x + 7y = 294$

Thus:

$7x + 7y = 189$ => equation 3

$14x + 7y = 294$ => equation 4

Subtract equation 4 from equation 3

-7x = -105

Divide both sides by -7

x = 15

Substitute x = 15 in equation 1

$x + y = 27$

$15 + y = 27$

Subtract both sides by 15

$y = 27 - 15$

$y = 12$

The ordered pair would be (15, 12)

7 0

2 years ago

6 + (9 − 1) 2 ÷ 4 ⋅ 1 over 2 whole to the power of 4

Bas_tet [7]

Answer:

625

Step-by-step explanation:

1. parenthesis first, so it simplifies to ((6+(8)2÷4*1)/2)^4

2. pemdas says that multiplication and division go before addition and subtraction, so ((6+(8)2÷4*1)/2)^4 becomes ((6+16÷4*1)/2)^4 ---> ((6+4)/2)^4

3. then simplify inside of the parenthesis, so it becomes 5^4, which is 625

6 0

2 years ago

Polly has $80,000 in a savings account that earns 1% annually. The interest is not compounded. How much will she have in 1 year?

Natasha2012 [34]

Answer:

80,800

Step-by-step explanation:

7 0

2 years ago