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3 years ago

Can someone please help me??

Mathematics

2 answers:

cricket20 [7]3 years ago

8 0

Answer: statistic

Step-by-step explanation:

MrRa [10]3 years ago

6 0

Answer: It is a statistic

Step-by-step explanation: It gives info

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If the test scores of a class of 36 students have a mean of 75.2 and the test scores of another class of 28 students have a mean

Anon25 [30]

The mean of the combined group is 71.3 --- hope this helps

3 0

4 years ago

Graph f(x) = -x + 6. Click on the graph until the graph of f(x) = -x + 6 appears. YA r

a_sh-v [17]

Answer:

The one that is 0,-3 and 3,0

Step-by-step explanation:

6 0

2 years ago

Find the LCM of 30 and 22

Evgesh-ka [11]

Answer 330

Step 1 Find the Prime Factorization of 30: 30= 2*3*5

Step 2 Find the Prime Factorization of 22: 22= 2*11

Step 3 Mult. Each factor: LCM= 2*3*5*11

Step 4 Solve : 330

7 0

4 years ago

If a flight departs fromPittsburgh at 7:55 a.m. andarrives in San Diego at9:20 a.m., how long isthe flight? Use the timezone map

Rudik [331]

If a flight departs from Pittsburgh at 7:55 a.m. and arrives in San Diego at 9:20 a.m.,

How long is the flight?

SOLUTION

9. 20 am - 7. 55 am = 1 hour 25 mins

3 0

1 year ago

Find the values of x and y.

vova2212 [387]

Look at the picture.

We have the equation (1) 12x + 4y = 40.

We know, the sum of the acute angles in a right triangle is 90°.

Therefore we have the equation (2) (12x + 4y) + (17x - y) = 90

Substitute (1) to (2):

40 + 17x - y = 90 subtract 40 from both sides

17x - y = 50 (3)

We have the system of equations:

$\left\{\begin{array}{ccc}12x + 4y = 40&|:4\\17x-y=50\end{array}\right\\\underline{+\left\{\begin{array}{ccc}3x + y = 10\\17x-y=50\end{array}\right}\ \text{add both side of equations}\\.\qquad20x=60\qquad|:20\\.\qquad x=3$

Substitute the value of x to (3)

$17(3)-y=50\\51-y=50\qquad|-51\\-y=-1\to y=1$

Answer: x = 3 and y = 1.

4 0

3 years ago