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3 years ago

CAN SOMEONE PLEASE HELP ME!!!!

Mathematics

1 answer:

steposvetlana [31]3 years ago

6 0

Answer:

Step-by-step explanation:

a) Five tests: 85,85,60,62 and 59

Mean = average

= (85+85+60+62+59)/5

= 351/5

Mean = 70.2

Median = middle number (order from least to greatest)

59 , 60, 62, 85, 85

Median = 62

Mode = the ones repeated more often = 85

b) Since mode is the highest score, compare to mean and median.

So mode is the best supports Rolinda's claim that she is doing well in her Spanish class

c) Rolinda's claim is misleading because her first two tests were 85 but then it started decreasing each test after.

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Compute the most rational way.

liraira [26]

1.=9900
2.=9.3
3.= x= 12.2155
Hope this helps

3 0

3 years ago

Chelsey puts twelve colored pieces of chocolate candy in a bag. Three pieces are green,

nydimaria [60]

Answer:

A) 3/110

B) 3/110

C) 3/110

D) The order doesn’t matter as long as you are drawing out the same three colors. The probability doesn’t change.

Step-by-step explanation:

A) 3/12x3/11x4/10=36/1320= 9/330 = 3/110

B) 3/12x4/11x3/10=36/1320= 9/330 = 3/110

C) 4/12x3/11x3/10=36/1320 = 9/330 = 3/110

D) The order doesn’t matter as long as you are drawing out the same three colors. The probability doesn’t change.

I hope this helps! Have a good day (PLZ GIVE BRAINLIEST)

8 0

3 years ago

Safiya deposited money into a bank account that earned 6.5% simple interest each year. After 312 years, she had earned $36.40 in

Svetllana [295]

Answer: If the time is 3 1/2 years (most reasonable assumption)

Her initial deposit was $160

Step-by-step explanation: The basic formula for simple interest is

<em>i = prt i </em>is interest, P is principal (deposit) r is the percentage (converted to a decimal) and t is time, the number of years.

For this question, you have to rearrange the equation to solve for p.

So divide both sides by rt and you have

p = i/rt

Substitute the values given

p = 36.40/(0.065)(3.5)

8 0

4 years ago

The heights of women aged 20 to 29 are approximately normal with mean 64 inches and standard deviation 2.7 inches. Men the same

san4es73 [151]

Answer:

Step-by-step explanation:

$Z=\frac{x-mu}{\sigma }$

X - Heights of women aged 20 to 29: X is N(64, 2.7)

Y - Heights of men aged 20 to 29: X is N(69.3, 2.8)

a) X=6'=72"

Z= $\frac{72-64}{2.7} =2.963$

b) Y = 72"

z= $\frac{72-69.3}{2.8} =0.965$

c) 72' women can be taken as very tall but men moderately taller than average

d) Y<5'5" =65"

Z< $\frac{65-69.3}{2.8} =-1.536$

e) X>73"

Z> $\frac{73-64}{2.7} =3.33$

Almost 0% can be taken

f) IQR =Q3-Q1

Z scores =

5 0

3 years ago

Can you solve 8/2(2+2)?

svetlana [45]

Answer:

Step-by-step explanation:

PEMDAS

2+2=4

2*4=8

8/8=1

6 0

3 years ago

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