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3 years ago

Keisha's penny bank is 2/3 full. After she removes 120 pennies, it is 1/2 full.How many pennies does Keisha's bank hold?

1 answer:

8 0

$let \: \\ x = the \: number \: of \: pennies \: the \\ \: bank \: holds\\ 120 + \frac{1}{2}x = \frac{2}{3}x \\ 120 = \frac{2}{3}x - \frac{1}{2}x \\ 120 = \frac{4}{6}x - \frac{3}{6}x \\ \frac{1}{6}x = 120 \: so \\ \: x = 120 \times 6 = 720$

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Step-by-step explanation:

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3 years ago

Kylie is planning to provide online science and Chinese language tutoring sessions. The sciences

Ivahew [28]

Answer:

120 ≤ 20c + 40s

Step-by-step explanation:

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Write an equation for time needed for science sessions

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3 years ago

Find the area of the shaded region. Round the the nearest tenth.

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Answer:

226.084 sq.m.

Step-by-step explanation:

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Area of sector = $\frac{123}{360} \times 3.14 \times (18.6)^2$

Area of sector = $371.157 m^2$

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b = OB = radius = 18.6 cm

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Substitute the values in the formula

Area of triangle = $\frac{1}{2} \times 18.6 \times 18.6 \times Sin 123$

Area of triangle = $145.073 m^2$

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= $371.157 m^2-145.073 m^2$

= $226.084 m^2$

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4 years ago

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3 years ago

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Answer:

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Step-by-step explanation:

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3 years ago