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PtichkaEL [24]
3 years ago
5

Helpppp need it fast plz

Mathematics
1 answer:
KatRina [158]3 years ago
6 0

Answer:

B

Step-by-step explanation:

4 is a lot less than the others

yez

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jesse is putting a ribbon around a square frame. He uses 24 inches of ribbon. How long is each side of the frame
OverLord2011 [107]
Answer
24÷4=6
So six
7 0
3 years ago
if 2500 is invested for 4 years and 500 is earned in simple interest, then the yearly interest rate is?
PIT_PIT [208]

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500/4=125

Step-by-step explanation:

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3 years ago
-2b^2-18b^2<br> Help me. Plz
satela [25.4K]

Answer:

{ \tt{ -  {2b}^{2}  - 18 {b}^{2} }} \\ =   -  {20 {b}^{2}}

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3 years ago
The mean preparation fee H&amp;R Block charged retail customers in 2012 was $183 (The Wall Street Journal, March 7, 2012). Use t
astraxan [27]

Answer:

a)0.6192

b)0.7422

c)0.8904

d)at least 151 sample is needed for 95% probability that sample mean falls within 8$ of the population mean.

Step-by-step explanation:

Let z(p) be the z-statistic of the probability that the mean price for a sample is within the margin of error. Then

z(p)=\frac{ME*\sqrt{N}}{s } where

  • Me is the margin of error from the mean
  • s is the standard deviation of the population
  • N is the sample size

a.

z(p)=\frac{8*\sqrt{30}}{50 } ≈ 0.8764

by looking z-table corresponding p value is 1-0.3808=0.6192

b.

z(p)=\frac{8*\sqrt{50}}{50 } ≈ 1.1314

by looking z-table corresponding p value is 1-0.2578=0.7422

c.

z(p)=\frac{8*\sqrt{100}}{50 } ≈ 1.6

by looking z-table corresponding p value is 1-0.1096=0.8904

d.

Minimum required sample size for 0.95 probability is

N≥(\frac{z*s}{ME} )^2 where

  • N is the sample size
  • z is the corresponding z-score in 95% probability (1.96)
  • s is the standard deviation (50)
  • ME is the margin of error (8)

then N≥(\frac{1.96*50}{8} )^2 ≈150.6

Thus at least 151 sample is needed for 95% probability that sample mean falls within 8$ of the population mean.

7 0
3 years ago
Find the value of x.<br> 105°/15x
Natalija [7]

\text{The two angles are supplementary, so their measures add up to 180 degrees.}

~~~~~~15x+105 = 180\\\\\implies 15x = 180 -105\\\\\implies 15x = 75\\\\\implies x =\dfrac{75}{15}\\\\\implies x = 5

8 0
2 years ago
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