3 years ago

There are 7 students in a class: 5 boys and 2 girls.

2 answers:

6 0

Most likely because there are more boys than girls but there could be an odd that a girl will be in the group since there is less girls and hs;es picking at random

harkovskaia [24]3 years ago

5 0

Answer:

1/7

Step-by-step explanation:

khan

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HELlPpPp BRAINLIEST thank you <3 m – 9 = 11

german

Answer:

m=20

Step-by-step explanation:

m-9=11

m-9+9=11+9

m=20

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2 years ago

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Determine the circumference of a circle with diameter 28 cm. Show your work

gulaghasi [49]

Answer:

Step-by-step explanation:

Diameter = 28 cm

therefore, radius = 28 / 2 = 14 cm

Circumference = 2 π r

= 2 × 22 / 7 × 14

= 88 cm

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3 years ago

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A theater company made 6,000 programs for their current play. The play will have 20 performances. If they would like to have the

VashaNatasha [74]

Divide 6000 by 20
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2 years ago

When 0.3(4x-8)-0.5(-2.4x+4) is simplified what is the resulting expression

Fantom [35]

Answer:

2.4x-4.4

Step-by-step explanation:

The first step to simplify this expression is to expand the terms in parenthesis

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3 years ago

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The value of a certain car decreases by 16% each year. What is the 1⁄2-life of the car?

svet-max [94.6K]

Answer:

The half life of the car is 3.98 years.

Step-by-step explanation:

The value of the car after t years is given by the following equation:

$V(t) = V(0)(1-r)^{t}$

In which V(0) is the initial value and r is the constant decay rate, as a decimal.

The value of a certain car decreases by 16% each year.

This means that $r = 0.16$

$V(t) = V(0)(1-r)^{t}$

$V(t) = V(0)(1-0.16)^{t}$

$V(t) = V(0)(0.84)^{t}$

What is the 1⁄2-life of the car?

This is t for which V(t) = 0.5V(0). So

$V(t) = V(0)(0.84)^{t}$

$0.5V(0) = V(0)(0.84)^{t}$

$(0.84)^{t} = 0.5$

$\log{(0.84)^{t}} = \log{0.5}$

$t\log{0.84} = \log{0.5}$

$t = \frac{\log{0.5}}{\log{0.84}}$

$t = 3.98$

The half life of the car is 3.98 years.

7 0

3 years ago