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olya-2409 [2.1K]
3 years ago
15

During the school year, Gianna usually keeps a regular sleeping schedule. She goes to bed at 9:15 p.m. and wakes up at 6:30 a.m.

For how long does Gianna sleep on a school night? Express the answer in hours and minutes.
Mathematics
1 answer:
mariarad [96]3 years ago
3 0
9 hours and 15 minutes
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Kanji buys 3 yards of fabric for $7.47. Then he realizes that he needs 2 more yards Of the Same fabric. How much will the extra
emmainna [20.7K]
It will cost 4.98.
Explanation: If you divide 7.47 by 3, you get 2.49. One yard plus one yard equals two yards. Multiply 2.49 by 2 to get the answer.
6 0
3 years ago
Which expression is equivalent to the one below?<br> (26 x 96) = 1814
vfiekz [6]

Answer:

the answer is A.

Step-by-step explanation:

(2^{6}×9^{6})÷18^{14}

2×9= 18

6+6= 12

18^{12}÷18^{14}

18^{12-14}= 18^{-2}

1/18^{-2}

3 0
2 years ago
Using your calculator, find the proportion of observations from a standard normal distribution that satisfies the following stat
emmainna [20.7K]
<span>Look at your table for a Z value of 1.55. The numbers on the far left column are your z values. See the 1.5 row, then move over to the 0.05 column to make it 1.55.
You'll see 0.9394.
That's the area under the normal curve from 1.55 to negative infinity.
But you wanted the area under the curve greater than 1.55.
Take 1-0.9394=0.0606.
You subtract from 1 because you know that the area under the whole curve is 1, so it gives you the area you need.</span>
3 0
3 years ago
What is the solution to the system of equations?
tekilochka [14]
<span>simplify third eqn -2x+5y+2x=4
5y=4
y=4/5

substitute back to 1st n 2nd eqn n solve for x n z
-4x-4-z=18 and -2x-4-2z=12
simplify -4x-z=22 and -2x-2z=16
-4x-(-x-8)=22
-3x+8=22
x=-14/3
z=-10/3
y=4/5





</span>
3 0
3 years ago
15x-3y≤18 please solve math problem
N76 [4]

Answer:

15x-3y=18;y=5x-6

Step-by-step explanation:

The answer to the question is 15x-3y=18;y=5x-6

7 0
2 years ago
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