All categories

2 years ago

If 1/4 of the 7th graders got an A on the test and 2/5 of them got a B, that fraction of the students got an A or B?

Mathematics

1 answer:

posledela2 years ago

5 0

Answer: $\dfrac{13}{20}$

Step-by-step explanation:

Given: Fraction of 7th graders got A = $\dfrac14$

Fraction of 7th graders got B = $\dfrac25$

The fraction of the students got an A or B = Fraction of 7th graders got + Fraction of 7th graders got B

$=\dfrac14+\dfrac25\\\\=\dfrac{5+2(4)}{5\times4}\\\\=\dfrac{5+8}{20}\\\\=\dfrac{13}{20}$

Hence, the required fraction: $\dfrac{13}{20}$

You might be interested in

What is the value of t=1 3(4 x (1/2) t-1)

Aliun [14]

Answer:

t = 13 over 25 or in alternate form its t = 0.52

7 0

2 years ago

I would love help and thank you

tigry1 [53]

The formula is width times length

5 0

2 years ago

Read 2 more answers

7+a+8+a= pls help pls help

Alina [70]

Answer:

15+2a

Step-by-step explanation:

7+a+8+a=15+2a

7 0

2 years ago

5.25 divided by 3<br> Thank You.

labwork [276]

Answer:

1.75

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Determine if the function is an even function, an odd function or neither. y=-5x^2-2x+6

Arlecino [84]

Answer:

Neither even nor odd

Step-by-step explanation:

The graph of y = -5x^2 - 2x + 6 is that of a parabola that opens down. This function is neither even nor odd because a point chosen at random is neither reflected in the y-axis nor reflected in the origin.

7 0

2 years ago