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2 years ago

I need help with 4-9 please hurryyyyy

Mathematics

1 answer:

Lana71 [14]2 years ago

8 0

Answer:

its hard to read

Step-by-step explanation:

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If you drive for 3hrs at 60mph and then for 2 hrs at 70mph how far will you travel

Phantasy [73]

60 miles per hour
distance=rate times time
first part
rate=60mph
time=3h
distance=60mph times 3h=180 miles

part 2
time=2 hours
rate=70mph
distance=70mph times 2h=140miles

total is 180mi+140mi=320miles

5 0

4 years ago

Read 2 more answers

A data set consists of the values 2, 6, 3, and 1. If we consider this a population (all the values available), the variance isA.

Hoochie [10]

Answer: E. none of the above

Step-by-step explanation:

The given data values that represents the population:

2, 6, 3, and 1.

Number of values : n=4

Mean of the data values = $\dfrac{\text{Sum of values}}{\text{No. of values}}$

$\dfrac{2+6+3+1}{4}=\dfrac{12}{4}=3$

Sum of the squares of the difference between each values and the mean =

$(2-3)^2+(6-3)^2+(3-3)^2+(1-3)^2$

$=-1^2+3^2+0^2+(-2)^2$

$=1+9+0+4=14$

Now , Variance = (Sum of the squares of the difference between each values and the mean ) ÷ (n)

= (14) ÷ (4)= 3.5

Hence, the variance is 3.5.

Therefore , the correct answer is "E. none of the above".

8 0

3 years ago

Kyle was given the following problem to solve.

djyliett [7]

Answer:

yes

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

2x - (3x + 6) Please help me with this equation guys!!!

katen-ka-za [31]

1. 2x - (3x + 6).....negative before parentheses makes everything inside parentheses opposite
2. 2x - 3x - 6....2x - 3x = -1x
3. -1x - 6

Answer:
-1x - 6

4 0

3 years ago

Is this pattern a net for the three dimensional figure ?

sukhopar [10]

It is not because the figure only has 2 hexagons (top and bottom) but the net has 3. So, your answer is NO.

7 0

3 years ago