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3 years ago

Gia flipped a coin 30 times.the coin landed on heads 21 times what is her experimental probability and landing on heads ???

Mathematics

1 answer:

g100num [7]3 years ago

5 0

Answer:

70%

Step-by-step explanation:

She got heads 21 out of the 30 times, or 21/30, which is 70%

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In the picture below a speaker is emitting a sound toward a solid barrier with a gap in it. Diagram and label the two types of w

mojhsa [17]

Answer: sound waves and mechanical waves or mechanical energy

Step-by-step explanation:

5 0

3 years ago

If 79.5% of married couple households are both native and 13.2% are both foreign, then (a) what percentage of married couple hou

Zanzabum

Answer:

The correct solution is "7.3%".

Step-by-step explanation:

It seems that the given question is incomplete. Find below the attachment of the complete and appropriate query.

According to the question,

The total married couples are,

= 55,550,000

where,

Both native = 79.5%

Both foreign = 13.2%

Now,

The percentage of couple that is one native as well as one foreign will be:

= $100-79.5-13.2$

= $7.3$ (%)

7 0

3 years ago

Translate this sentence into an equation.

PtichkaEL [24]

Answer:

r+4=52

Step-by-step explanation:

if u wanna find r then its simple

52-4=r

so r=48

8 0

3 years ago

Read 2 more answers

X+y=14

RoseWind [281]

Answer:

x = -18

y = 4

Step-by-step explanation:

x + y = 4

2x + 3y = 30

You can do any math operation to each side of the equal sign as long as you do the same operation to both sides.

change x + y = 4 to x = 4 - y

Now substitute (4 - y) into the second equation, in place of x.

2(4-y) + 3y = 30

multiply the 2(4-y) part:

8 -2y + 3y = 30

simplify:

8 + y = 30

subtract 8 from each side:

y = 22

now substitute the value of y back into the first equation to solve for x:

x + 22 = 4

subtract 22 from both sides:

x = -18

Check:

x + y = 4

22 -18 = 4

4 = 4 (this checks)

2(-18) + 3(22) = 30

-36 + 66 = 30

30 =30 (this checks also)

PS: you could have solved for y first if you had wanted to. The results would be the same.

5 0

3 years ago

The drawing of a building shown below has a scale of 1 inch to 30 feet. what is the actual height, in feet, of the building? the

Vesnalui [34]

<h3>The actual height of building is 37.5 feet</h3>

Solution:

Given that,

The drawing of a building shown below has a scale of 1 inch to 30 feet

1 inch = 30 feet

The drawing of the building of this problem has the height of 1.25 inches and base of 0.75 inches

Thus actual height is given as:

height = 1.25 inches

$actual\ height = 1.25 \times 30\ feet\\\\actual height = 37.5\ feet$

The actual base is given as:

base = 0.75 inches

$actual\ base = 0.75 \times 30\ feet\\\\\actual\ base = 22.5\ feet$

Thus actual base is 22.5 feet

8 0

3 years ago