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astraxan [27]
3 years ago
12

Help me with this please

Mathematics
1 answer:
marta [7]3 years ago
6 0

Answer:

C

Step-by-step explanation:

Melania: 2 1/5 = 11/5

Cathy 1 3/4 as far as Melania did => 7/4 x 11/ 5 = 77 / 20 = 3 17/20

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-1 over 5 divided by 7 over 4
Papessa [141]

Answer:-0.00714

Step-by-step explanation: STEP

1

:

1

Simplify —

5

Equation at the end of step

1

:

1

0 - — ÷ 7 ÷ 4

5

STEP

2

:

1

Divide — by 7

5

Equation at the end of step

2

:

1

0 - —— ÷ 4

35

STEP

3

:

1

Divide —— by 4

35

Equation at the end of step

3

:

1

0 - ———

140

STEP

4

:

Final result :

-1

——— = -0.00714

140

5 0
3 years ago
Plz help IT HARD WILL MARK BRAIN
andriy [413]

Answer:

a

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
A bank wants to estimate the difference in the proportion of its "big" customers who have a second account with a different bank
In-s [12.5K]

Answer:

Kindly check explanation

Step-by-step explanation:

To construct confidence interval for difference in proportion ; the following conditions must be met :

1.) The selected samples must have been randomly chosen or selected from a larger population. This is essential in other to eliminate bias.

Each group of samples must be independently chosen. That is, the samples of bug customers chosen must be independent of the sample of small customers selected.

The population from which the samples are drawn must be considerably larger than the sample size. Sample size, n should be ≤ 10% of the population size.

p1 = 160 / 200 = 0.8 ; (1 - p1) = 0.2

p2 = 120 / 300 = 0.4 ; (1 - p2) = 0.6

(p1 - p2) ± Zcritical * sqrt[(p1(1 - p1) /n1) + (p2(1 - p2) / n2)]

5 0
2 years ago
I need to know the answer to this if u could answer please thank you. -7/12 minus -7/36
deff fn [24]
Answer 0.24. i hope this is right
5 0
2 years ago
Can you use the SAS Postulate, the AAS Theorem, or both to prove the triangles congruent? A. either SAS or AAS B. SAS only C. AA
Harman [31]
Sas only because the triangles and usually congruent to me or in my opponion
5 0
3 years ago
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