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AlekseyPX
3 years ago
8

There are 150 students in the fifth grade in Washington Elementary School. 2/5 of the students like soccer best and 3/10 of them

like basketball best. What fractions like soccer or basketball best?
Mathematics
1 answer:
monitta3 years ago
3 0

Answer:

The fraction of students who likes soccer or basketball is 7/10.

Step-by-step explanation:

In this case we have two groups of students, the group a is the one that prefers soccer, while the second group is the one that prefers basketball. We then need to find the fraction that represents the students that are in either group, in these cases we need to take the fractions of each group and sum them. So we have:

soccer OR basketball = soccer + basketball

soccer OR basketball = 2/5 + 3/10

Through LMC we have:

soccer OR basketball = (2*2 + 3)/10 = (4 + 3)/10 = 7/10

The fraction of students who likes soccer or basketball is 7/10.

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A man is sixteen years older than his father, if the total age is 57. How old is the son and the father?​
Alex Ar [27]

Answer:

The son is 20 and a half years old.

The father is 36 and a half years old.

Step-by-step explanation:

We can solve this easily by turning it into an equation.

Let the mans age be y and the fathers age be x.

y+x=57

x=y+16

We can use the substitution method to solve for the first equation.

y+(y+16)=57

Now we only have one variable to solve for. Add like terms.

2y+16=57

Subtract 16 on both sides.

2y=41

Divide both sides by 2 to isolate y.

y=20.5

Now substitute 20.5 for y to solve for x.

20.5+x=57

Subtract 20.5 from both sides.

x=36.5

<em>The son is 20 and a half years old.</em>

<em>The father is 36 and a half years old.</em>

Hope this helps!

8 0
3 years ago
How do I find the product when multiplying with decimals<br><img src="https://tex.z-dn.net/?f=0.36%20%5Ctimes%202.4" id="TexForm
stellarik [79]

Step 1:

first let us convert the two decimals into fractions.

0.36=36/100 (since there are two digits after decimal point we divide by 100)

2.4=24/10 (since there are one digit after decimal point we divide by 10)

now we can multiply the fractions

\frac{36}{100}×\frac{24}{10}

multiplying numerator with numerator and denominator with denominator:

\frac{36*24}{100*10}

=\frac{864}{1000}

Now we can convert this back to decimal

864/1000=0.864, moving decimal three digits to the left since we have three zeros in the denominator that is 1000.

Answer=0.864

7 0
3 years ago
if 1/5 and -2 are respectively product and sum of the zeroes of a quadratic polynomial. Find the polynomial.​
Nikitich [7]

Answer:

this might be the equation

Step-by-step explanation:

To find: Quadratic Polynomial.

where , ( α + β ) is sum of zeroes and αβ is product of zeroes.

4 0
3 years ago
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trapecia [35]

Answer:

x + 50° + 70° = 180°

or, x + 120° = 180°

or, x = 180° - 120°

•°• x = 60°

Step-by-step explanation:

x + 50° + 70° = 180° ( Due to Straight line )

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3 years ago
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