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goblinko [34]
3 years ago
5

What the error? Jonah says a common denominator for 3/4 and 2/5 is 9 what is Jonah error?explain

Mathematics
2 answers:
kolezko [41]3 years ago
7 0

Answer:

should be 20

Step-by-step explanation:

yes

nataly862011 [7]3 years ago
4 0

Answer: She had added the Denominator, instead of finding the LCM.

Explanation: She should've multiplied them by a common number to equal a common Product, and replace the Denominator with the Product. (The correct denominator is 20, because 4 x 5 = 20, and 5 x 4= 20)

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Choose correct way to write 7 cents using the dollar symbol.
OverLord2011 [107]
$.07. You do not write $.7 because that would mean 70 cents and should be written with a 0 at the end anyways. You do not write any dollar amount with a cents sign at the end, because the dollar sign replaces it. You write $.07 because 7 cents means 7/100 (7 one hundredths) so the seven must be written in the hundredths spot. Remember, the hundredth spot is the second number after a decimal.
5 0
3 years ago
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What is the value of B??
Maurinko [17]
The answer is 3.75.

Since the length of 'b' is one-half that of 7.5 based on the diagram (we know this because the partial radii connecting the two lines, or chords, are the same length, meaning the two chords are equal);

   <u>7.5</u>      ⇒   3.75<u>
</u>    2
<u>
</u><em>Hope that helps.</em><u>
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7 0
3 years ago
Write an addition fact that helps you solve 16-9
pochemuha
4+1 = 5 
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3 0
3 years ago
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Scores of an IQ test have a​ bell-shaped distribution with a mean of 100 and a standard deviation of 19. Use the empirical rule
zvonat [6]

Answer: About 99.7%  IQ scores falls within 43 and 157.

Step-by-step explanation:

According to the empirical rule , if a data follows normal distribution then about 99.7% of the population lies with in three standard deviations from mean.

Given:   IQ test have a​ bell-shaped distribution with a mean of 100 and a standard deviation of 19.

Since , the graph of normal distribution is bell-shaped , it mean that IQ scores follow normal distribution.

Then, About 99.7%  IQ scores falls within Mean ± 3 (Standard deviation).

i.e. About 99.7%  IQ scores falls within 100± 3(19).

i.e. About 99.7%  IQ scores falls within 100- 57 and 100+57.

i.e. About 99.7%  IQ scores falls within 43 and 157.

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About 99.7%  IQ scores falls within 43 and 157.

3 0
3 years ago
One number is four times another number. If their sum is 95, what are the numbers?
nikdorinn [45]
Let x be one number and y be the other.

#1 - Set up a system of equations.
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#2 - Solve the system by substitution.
x + (4x) = 45
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(9) + y = 45
y = 36
8 0
3 years ago
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