Fill in missing numbers. 48.9÷0.03=... ÷ 3

Mathematics

1 answer:

shepuryov [24]3 years ago

8 0

Answer:

4890

Step-by-step explanation:

Recognize the denominator has been multiplied by 100:

0.03 × 100 = 3

To have the same division problem, the numerator must also be multiplied by 100. This is the sort of decimal point adjustment usually carried out for long division: the divisor is made to be an integer, and the decimal point of the dividend is moved the same direction by the same number of places.

$\dfrac{48.9}{0.03}=\dfrac{48.9\cdot 100}{0.03\cdot 100}=\dfrac{4890}{3}$

The missing number is 4890.

____

The quotient is 1630.

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Setler79 [48]

Answer:

-8

Step-by-step explanation:

((x * -5) / -8) = 5

multiply both sides by -8

x * -5 = 40

divide both sides by -5

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2 years ago

Find the area of the shaded portion in each of the following

MrRa [10]

Answer:

30.5 cm^2

Step-by-step explanation:

<h3><u>General outline</u></h3>

Find the area of the full circle
Find the area of the rectangle
Find the difference (full circle area - rectangle area)

<h3><u>Step 1. Find the area of the full circle</u></h3>

Recall the formula for the area of a circle: $A_{circle}=\pi r^2$ where $\pi \approx 3.14$ , and "r" is the radius of the circle (distance from center to any point on the edge).

From the diagram, the radius is 5cm.

$A_{circle}=\pi r^2$

$A_{circle}=(3.14)(5[cm])^2$

$A_{circle}=78.5[cm^2]$

<h3><u>Step 2. Find the area of the rectangle</u></h3>

Recall the formula for the area of a rectangle: $A_{rectangle}=bh$ where "b" is the base of the rectangle (length of bottom or length of top), "h" is the height of the rectangle (distance from bottom to top).