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svlad2 [7]
3 years ago
5

21

Mathematics
1 answer:
katrin [286]3 years ago
5 0

Step-by-step explanation:

<u>Step 1:  Factor</u>

x^2 - 4x - 5

x^2 - 5x + x - 5

(x - 5)(x + 1)

   E      D

Answer:  Option D and E

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Help help help help help help help help help help help help help help help help help help​
kvv77 [185]

Answer:

Step-by-step explanation:

Part 1

P(z < -1.45)

Using the z score table

P =

Part 2

We solve using z score formula

z = (x-μ)/σ, where x is the raw score, μ is the population mean, and σ is the population standard deviation.

a) P(X >52)

x = 52

Mean = 60

Standard deviation = 8

z = 52 - 60/8

z = -1

P-value from Z-Table:

P(x<52) = 0.15866

P(x>52) = 1 - P(x<52) = 0.84134

b) P(48 < x < 64)

5 0
2 years ago
Ron tosses a 6-sided number cube labeled 1 to 6. Describe the probability that he tosses a number greater than 1. Explain your r
Brrunno [24]
5:6. cuz there are 5 numbers greater than 1 that can be rolled
4 0
3 years ago
Read 2 more answers
Please answer it correctly I need it today please help
alexdok [17]

Answer:

I am about 95% sure that this is what they want. P.s (sorry I cant put the divide symbol)

<u><em>The variable is the number of shirts she bought or x</em></u>

and the equation is <u><em>(375+50) divided by (15+2) = x</em></u>

in the solve spot put

<em><u>(375+50) divided by (15+2)=x</u></em>

<em><u>425 divided by 17=x</u></em>

<em><u>x=25</u></em>

Then your answer would be <u><em>25</em></u>

Step-by-step explanation:

first add 50 to 375 so you get the full price which will give you 425. then to find out how many shirts she bought you must add 2 to 15 to get 17. then divide 425 by 17 which is 25. so she bought <em><u>25 shirts</u></em>.

3 0
3 years ago
Simplify: 6-8+7-2-8+13
Vikki [24]

Answer:

The answer is 8.

Step-by-step explanation:

6-8+7-2-8+13

= (6 +7 + 13) - (8+2+8)

= 26 - 18

= 8

5 0
3 years ago
What percent of 95 is 74
Softa [21]
74 is what percent of 95?


74 is P% of 95


Equation: Y = P% * X


Solving our equation for P

P% = Y/X

P% = 74/95

p = 0.7789

Convert decimal to percent:

<span>P% = 0.7789 * 100 = 77.89%
</span>

Hope I helped!

Let me know if you need anything else!

~ Zoe
7 0
3 years ago
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