All categories

2 years ago

I need the answer to this because I don't get it so can you please tell me what it is

Mathematics

2 answers:

andriy [413]2 years ago

7 0

2/5+1/2^2
2/5+2/4
multiply the first fraction by four and the second fraction by five to get the common denominator of 20
8/20+10/20=18/20
reduce
9/10

hope I helped !

Juli2301 [7.4K]2 years ago

5 0

2/5+1/2=9/10
You have to turn both fractions to common denominators, so that both fractions will be out of 10

2/5=4/10
1/2=5/10
4/10+5/10=9/10

You might be interested in

2a = 8 4b = 0 5c = 35 x/2 = 8

Furkat [3]

A=4
B=0
C=7
X=16
This is what I think

3 0

2 years ago

Read 2 more answers

Use intercepts to graph the linear equation -2x+6y=18 .

VikaD [51]

Answer: (0,3) and (-9,0)
————————
-2(0) + 6y = 18
6y = 18
y = 3 so…(0,3)
————————
-2x + 6(0) = 18
-2x = 18
x = -9 so.. (-9,0)

6 0

2 years ago

Your work or words should justify your answer (explain how you know). As a math teacher, Josie frequently makes photocopies of f

Doss [256]

Answer:

Yes, because by dividing x by his equivalent y, you find a constant of proportionality being 10.

x / y = 10

Step-by-step explanation:

20 / 2 = 10

50 / 5 =10

60 / 6 = 10

70 / 7 = 10

7 0

2 years ago

4. Use SUBSTITUTION to solve the system. x= y + 5 2y + x = -4

Marianna [84]

Answer:

if I I just want free point so I am

6 0

3 years ago

40. In a statistics class of 30 students, there were 13 men and 17 women. Two of the men and three of the women received an A in

Harrizon [31]

Answer:

a) 56.67% probability that the student is a woman

b) 16.67% probability that the student received an A

c) 63.33% probability that the student is a woman or received an A.

d) 83.33% probability that the student did not receive an A.

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

We have that:

30 students

13 men

17 women

2 men that got an A and 11 men that did not get an A.

3 women that got an A and 14 women that did not get an A.

a. Find the probability that the student is a woman.

30 students, of which 17 are women.

$P = \frac{17}{30} = 0.5667$

56.67% probability that the student is a woman

b. Find the probability that the student received an A.

30 students, of which 5 received an A

$P = \frac{5}{30} = 0.1667$

16.67% probability that the student received an A

c. Find the probability that the student is a woman or received an A.

30 students, of which 17 are women and 2 are men who received an A. So

$P = \frac{19}{30} = 0.6333$

63.33% probability that the student is a woman or received an A.

d. Find the probability that the student did not receive an A.

30 students, of which 25 did not receive an A.

$P = \frac{25}{30} = 0.8333$

83.33% probability that the student did not receive an A.

7 0

3 years ago