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Artyom0805 [142]
4 years ago
13

the first kernel pops 127 seconds after the microwave oven is started. what is the z-score of this kernel? round your answer two

decimal places.
Mathematics
2 answers:
mr Goodwill [35]4 years ago
7 0

Answer:

D) -2.30

Step-by-step explanation:

I just got it right 10.4.4

Alborosie4 years ago
3 0
Z = (x - µ)/σ 

z = (127 - 150)/10 = -23/10 = -2.3
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1 Point
alexandr1967 [171]

Answer:

Option C

Step-by-step explanation:

The given inequality is

5x-1 < 19 and -3-x+1\le1

Group similar terms to get:

5x < 19+1 and -x\le1-1+3

5x < 20 and -x\le3

Solve for x to get:

x < 4 and  x\ge -3

The correct choice is C

4 0
3 years ago
Read 2 more answers
I GIVE BRAINLIEST FOR EXPLANATION AND CORRECT ANSWER EXTRA POINTS 2
GaryK [48]

Answer:

See below, please!

Step-by-step explanation:

You can use the cos ratio to find the value of x. Since we know cosine is adjacent/hypotenuse, we can do cos(60)=x/40. Then, we multiply each side by 40 to find the value of x. So, x=20.

3 0
3 years ago
How many solutions are there to the equation below?<br> 5x + 15 = 5(x+4)
elena-s [515]

Answer:

I think it 2 solution to the problem you can add or multiple

5 0
3 years ago
Tanya is saving for a vacation. She wants to have at least $75 for each of the 12 days of her trip. If she saves $85 each month
likoan [24]

Answer:

a) No, she will not save enough

(couldnt figure out how to make it a division equation, sorry!)

b) yes, i agree. if you were to multiply (75x12) and (85x10) and subtract the equation of (75x12)-(85x10), you would be given the answer of 50. 75x12 is 900, 85x10 is 850, 850 is less than 900, showing that Tanya would not make enough money.

words from me

part B is explaining how i solved part A since i did it jorges way, good luck with the division and i hope i helped a bit! this took me 30mins haha

Step-by-step explanation:

mental math? nah we use calculators and pretend we did it mentally

explaining

tanya needs atleast $75 for each of 12 days. she wants to save $85 each month for 10 months.

we need to discover if she will make enough money

solving A (ended up being jorges way, but this is how to solve part A)

first,

75x12 = 900

that means tanya needs a total of $900 for her trip

next,

85*10 = 850

this shows tanya will be short $50 and <em>wont </em>make enough for her trip

answer A

No, she will not save enough

answer A part 2

honestly to me its impossible to write this as division so good luck with that part, sorry!

5 0
3 years ago
Simplify (1/2)^4<br> 1/10<br> 1/8<br> 1/4
forsale [732]

Answer:

1/8

Step-by-step explanation:

\bigg( \frac{1}{2} \bigg)^{4}  =  \\  \\   = \frac{1}{8}

7 0
3 years ago
Read 2 more answers
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