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Verdich [7]
2 years ago
10

Need help asap in delta math assignment

Mathematics
2 answers:
V125BC [204]2 years ago
8 0

Answer:

8

Step-by-step explanation:

B^2 = C^2 -A^2 89-25 = 64 sqrt(64) is 8

Ivan2 years ago
5 0

Answer:

8

Step-by-step explanation:

use Pythagoras rule

{a}^{2}  + {b}^{2} =  {c}^{2}

{5}^{2}  +  {x}^{2}  =  { \sqrt{89} }^{2}

so x = 8

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10 points!!! Please help I’m stuck on this question.
kakasveta [241]

Answer:

9m^2+17m-9

Step-by-step explanation:

4 0
2 years ago
All sets that contain the number 5 ?
vivado [14]
Real numbers, rational numbers, Integers, Whole numbers, and Natural numbers. 
5 0
3 years ago
Can you please help me please I really need help
RoseWind [281]

Answer:

(look below)

Step-by-step explanation:

i used to do ixl so heres an appropriate answer:

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5 0
2 years ago
The mean preparation fee H&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. If​ necessary, write your answer in simplest radical form. 30 x 25 x nothing ​(Simplify your answer. Type a
murzikaleks [220]

Answer:

x = 38.05

Step-by-step explanation:

Using the Pythagoras theorem to find x

x is the hypotenuse

The other sides are opposite and adjacent

x² = 30²+25²

x² = 900+625

x² = 1525

x = √1525

x = 39.05

4 0
2 years ago
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