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rusak2 [61]
3 years ago
5

3) Which is an expression?

Mathematics
1 answer:
bixtya [17]3 years ago
5 0

Answer:

(A) x(3+5)  is an expression. The rest are equations.

Step-by-step explanation:

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How do you calculate 278 × 11 using estimation?<br>​
neonofarm [45]

Answer:

2800

Step-by-step explanation:

round 278 to 280

then round 11 to 10

then times the 2 answers together

8 0
3 years ago
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two friends are renting an apartment. they pay the landlord the first and last month's rent. the landlord also requires them to
GarryVolchara [31]

Use the given information to write an equation, then solve it.

$1600 = (1 + 1 + 1/2)×(monthly rent) . . . . relationship given in the problem statement

$1600/2.5 = monthly rent = $640 . . . . divide by the coefficient of monthly rent

3 0
3 years ago
Uestion 6 one out of every five people who buy ice cream buys vanilla ice cream. if a store sells 125 ice cream cones in one day
Snowcat [4.5K]

1/5 = .20

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25 Ice Cream cones would be Vanilla

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3 years ago
3.3 A circle has a radius of 12cm. An angle of 3.2 radians is subtended at the centre by an arc. Calculate the length of the arc
Inessa [10]

Answer:

S = 38.4 centimeters.

Step-by-step explanation:

<u>Given the following data;</u>

  • Radius, r = 12 cm
  • Angle = 3.2 rads

To find the length of the arc of a circle;

A full circle measures an angle of 360 degrees.

π = 180°

So; Angle, A = 360° = 2π

Therefore, a full circle is equal to 2π in terms of radians (rads).

Also, the circumference (the length of an arc) of a circle is equal to 2πr or Ar.

Mathematically, the length of the arc of a circle is given by the formula;

S = rA

Where;

  • S is the length of the arc.
  • A is the angle measured in radians.

Substituting into the formula, we have;

S = 12 * 3.2

<em>S = 38.4 centimeters.</em>

3 0
2 years ago
It is known that the normal distribution of IQ scores has the population mean of 100 and the population variance of 15. Your sam
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