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3 years ago

7

the probability that a couple will have two children, so that their first child is a boy and their second child is a girl is 1/2

. True or False

2 answers:

a_sh-v [17]3 years ago

7 0

well you cant chose what gender your child will turn up so it can be b/b (boy, boy) g/b, g/g, b/g

GrogVix [38]3 years ago

4 0

The answer is false.

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The measures of Z1 and 22 are 30% and 45% of the sum of the angle measures of the triangle. Find

frosja888 [35]

Answer:

45 degree or 25%

Step-by-step explanation:

sum of angles of triangle= 180 so

$180*\frac{30}{100}=54$ -----> angle 1

(note: 30% is equal to $\frac{30}{100}$ )

$180*\frac{45}{100} =81$ ------> angle 2

lets add angle 1 and 2 together

54+81=135

now lets subtract it from 180 to get the remained angle

180-135=45 and if you want it in % so you just get 100%-(30%+45%)= 25%

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2 years ago

How many inches are in 3 feet?

siniylev [52]

Answer:

e. 36 inches

Step-by-step explanation:

there are 12 inches in a foot 3 times 12 is 36

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2 years ago

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MatroZZZ [7]

This item can be answered by the concept of ratio and proportion. The ratio of the sculpture's height and shadow should be proportional or equal to that of the person. Mathematically,
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5 0

3 years ago

The speeds in miles per hour of seven randomly selected qualifiers for the Indianapolis 500 (in 2012) are listed below. Estimate

SSSSS [86.1K]

Answer:

Mean qualifying speed

= 224.5669mi/hr

Speed that passed the average/mean

= 226.240mi/hr ,224.037mi/hr 226.484mi/hr, 225.172 mi/hr

Step-by-step explanation:

Let's understand what mean is then understand what mean qualifying speed is.

First mean is like the average of the seven speed listed below.

So let's find the mean.

Mean = (223.684+ 222.929+ 226.240

+224.037 +226.484+ 225.172

+223.422)/7

Mean = 1571.968/7

Mean = 224.5669

So the mean qualifying speed is those speed that qualifies when the mean is taken, i.e the speed that crossed the average.

Mean qualifying speed are

=226.240 ,224.037,226.484

, 225.172

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3 years ago

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Komok [63]

Answer:

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Step-by-step explanation:

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3 years ago