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4 years ago

There are 500 children in elementary.Today 25 children are away.what percentage are present?

1 answer:

4 0

This can be solved using a proportion

100 : 500 = x : 475
100 percent is 500, x percent is based on the remaining 475 students
100 x 475 = 500x
47500 = 500x
x= 47500/500
x=95

95% of students are present.

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Aricela is trying to estimate the distance between her house and the park. On a map with a scale of 0.5 in. = 2 miles, the dista

mrs_skeptik [129]

Answer:

Option A - $\frac{0.5}{2.75}=\frac{2}{d}$

Step-by-step explanation:

Given : Aricela is trying to estimate the distance between her house and the park. On a map with a scale of 0.5 in. = 2 miles, the distance between her house and the park is 2.75 in.

To find : Which proportion can Aricela use to determine the distance, d, between her house and the park?

Solution :

The distance between her house and the park is 'd' miles.

A scale of 0.5 in. = 2 miles

The distance between her house and the park is 2.75 in.

i.e. the scale is 2.75 in. = d miles

The proportion form is

$\frac{0.5\ in}{2.75\ in}=\frac{2\ miles}{d\ miles}$

Therefore, proportion can Aricela use to determine is $\frac{0.5}{2.75}=\frac{2}{d}$ .

So, option A is correct.

4 0

4 years ago

A gift box in the shape of a rectangular prism has 20-inch length, 14-inch width, and 10-inch height. How much paper will you ne

Marizza181 [45]

Answer:

1240 in²

Step-by-step explanation:

Total surface area:

S = 2(lw + lh + wh)
S = 2(20*14+20*10+14*10) = 1240 in²

5 0

3 years ago

Consider the matrices

SCORPION-xisa [38]

Answer:

2000

Step-by-step explanation:

sorry need points

4 0

3 years ago

Read 2 more answers

A physical education class is running a mile. The teacher has set a goal of 12 minutes to complete the mile. Students

Illusion [34]

Answer:

Isaac is 26

Simon is 24

if 8 is 4 I.e 8 divide by 4 is 2

therefore 1 minute is 2 scores

Isaac :13 x 2=26

(do the same to Simon to get his score)

6 0

3 years ago

Which shows the expression below in simplified form? (7 × 10-3) - (2.3 × 10-6) A. 6.9977 × 10-3 B. 6.99977 × 10-3 C. 6.9977 × 10

rosijanka [135]

Option A

$(7 \times 10^{-3}) - (2.3 \times 10^{-6}) = 6.9977 \times 10^{-3}$

Solution:

Given expression is:

$(7 \times 10^{-3}) - (2.3 \times 10^{-6})$

To evaluate the expression, let us make the exponent of 10 same

$2.3 \times 10^{-6} = 0.0023 \times 10^{-6+3} = 0.0023 \times 10^{-3}$

[ Here, decimal point is moved three times left, so add 3 ]

Therefore,

$(7 \times 10^{-3}) - (2.3 \times 10^{-6}) = (7 \times 10^{-3}) - (0.0023 \times 10^{-3})$

$\text{Take the } 10^{-3} \text{ as common }$

$(7 \times 10^{-3}) - (0.0023 \times 10^{-3}) = 10^{-3}(7-0.0023)\\\\\text{ Solve for terms inside the bracket }\\\\(7 \times 10^{-3}) - (0.0023 \times 10^{-3}) = 10^{-3} \times 6.9977\\\\\text{Therefore, the simplified expression is: }\\\\(7 \times 10^{-3}) - (0.0023 \times 10^{-3}) = 6.9977 \times 10^{-3}$

Thus Option A is correct

6 0

4 years ago