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Akimi4 [234]
3 years ago
14

75 students in a kindergarten. 40% of them can read. how many can read?

Mathematics
2 answers:
Paul [167]3 years ago
8 0

Answer:

30

Step-by-step explanation:

75 times .40 = 30

Crank3 years ago
5 0

Answer:

30 students

Step-by-step explanation:

40% OF 75 students

= 40\100 X 75 students

= 30 students

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The figure à shown on ancient coin which was once used in china.the coin is in the shape of a circle of radius 3cm with a square
lianna [129]

Answer:

(1) 2π - x² = 0 (2) x = 2.5 cm (3) perimeter = 10 cm

Step-by-step explanation:

(1)The area of the circular coin without the inner square removed is πr² where r = 3 cm is the radius of the coin. So, the area of the coin without the inner square removed is πr² = π(3 cm)² = 9π cm²

The area of the square of x sides removed from its center is x².

The area A of the each face of the coin is thus A = 9π - x²

Since the area of each face of the coin A = 7π cm²,

then

7π = 9π - x²

9π - 7π - x² = 0

2π - x² = 0

(2) Solve the equation 2π - x² = 0

2π - x² = 0

x² = 2π

x = ±√(2π)

x = ± 2.51 cm

Since x cannot be negative, we take the positive answer.

So, x = 2.51 cm

≅ 2.5 cm

(3) Find the perimeter of the square

The perimeter of the square, p is given by p = 4x

p = 4 × 2.51 cm

= 10.04 cm

≅ 10 cm

8 0
3 years ago
48w + 42x. Write you're answere as a product with a whole number greater than 1???
Natali [406]

Answer:

6(8w + 7x)

Step-by-step explanation:

Hello!

The greatest common factor between 48 and 42 is 6. We can factor out 6 from each term.

<h3>Factor</h3>
  • 48w + 42x
  • 6(8w) + 6(7x)
  • 6(8w + 7x)

The expression is 6(8w + 7x).

4 0
1 year ago
Read 2 more answers
A bag of sawdust costs $5.00 and can cover 9 feet of ground. By buying part of the bag, how much would it cost to buy enough to
BARSIC [14]
It would be about .55 cents
6 0
3 years ago
A line passes through the points (6,-6) and (9,-5). What is it’s equation in point slope form?
BARSIC [14]

Answer:

y=\frac{1}{3}x-8

Step-by-step explanation:

Slope-intercept form of an equation is written as y=mx+b, where m is the slope and b is the y-intercept.

The slope of a line that passes through the points (x_1,\: y_1) and (x_2, \: y_2) is m=\frac{\Delta y}{\Delta x}=\frac{y_2-y_1}{x_2-x_1}. Using the coordinates (6,-6) and (9,-5) as given in the problem, we have slope of this line to be:

m=\frac{-5-(-6)}{9-6}=\frac{1}{3}.

Now using this slope we've found and any point the line passes through, we can find the y-intercept of this equation:

-6=\frac{1}{3}(6)+b, \\ b=-8

Therefore, the equation of this line in slope-intercept form is \fbox{$y=\frac{1}{3}x-8$}.

3 0
3 years ago
The average cost for a gallon of gasoline increased from $2.04 one year to $3.20 the next year. What is the percent of increase,
Gnom [1K]
D. Percent of increase is 57%
4 0
3 years ago
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