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Lyrx [107]
3 years ago
7

2. Simplify the sum or difference. 4 sqrt 2 - 7 sqrt 2

Mathematics
1 answer:
Stella [2.4K]3 years ago
7 0
Hello :
4√2-7√2= (4-7)√2 = -3√2 
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What is z 15 = -45+ z
damaskus [11]

Answer:

60 = z

Step-by-step explanation:

15 = - 45 + z

15 + 45 = z

60 = z

8 0
3 years ago
The data below are the monthly average high temperatures for New York City. What is the five-number summary? 40, 40, 48, 61, 72,
yawa3891 [41]

Answer:

B) Sample minimum: 40, Sample maximum: 84

Q1: 45, Median: 63, Q3: 77

Step-by-step explanation:

The first step is to write the temperatures in crescent order:

40, 40, 42, 48, 54, 61, 65, 72, 76, 78, 84, 84,

The sample minimum is the lowest value = 40

The sample maximum is the highest value = 84.

Since there are 12 numbers, the sample median is the average between the 6th and 7th terms:

M = \frac{61+65}{2}\\ M=63

The first quartile is the average between the 3rd and 4th terms:

Q_1 = \frac{42+48}{2}\\ Q_1=45

The third quartile is the average between the 9th and 10th terms:

Q_3 = \frac{76+78}{2}\\ Q_3=77

Therefore, the answer is:

B) Sample minimum: 40, Sample maximum: 84

Q1: 45, Median: 63, Q3: 77

8 0
3 years ago
X =<br><br> 12<br> 9<br> 6 2/3<br> help me out please you guys are awesome ^-^
vitfil [10]

the answer is x =  6 2/3

ok done. Thank to me :>

4 0
3 years ago
A light bulb in Keisha's house uses a total of 4.86 watts of electric power. If the light bulb uses 5.4 watts each minute it is
Hoochie [10]

Answer:

I think it is 0.9 minutes (I could be wrong though.)

Step-by-step explanation:

3 0
2 years ago
-8+y=14
Sati [7]

Answer:

y = 22

Step-by-step explanation:

we want to move the -8 to the other side, so 14+8 = 22

y = 22

check: -8 + 22 = 14

8 0
3 years ago
Read 2 more answers
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