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3 years ago

Which questions are statistical questions?

Mathematics

1 answer:

topjm [15]3 years ago

8 0

Answer:

whats the number of the class.

what's my height

how many students from each school in this city loves football

what is the height of each student inmy class

how many servings of fruit did I eat each day thus month

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Simplify 3(4x + 6) - 9x. -15x + 18 3x + 18 3x + 6 12x + 18 - 9x

Kamila [148]

Hi there!

To simplify this equation we first need to distribute.

(3)(4x) + (3)(6) + - 9x
= 12x +18 + - 9x

Next, combine like terms.

= 12x + 18 + - 9x
= (12x + - 9x) + (18)
= 3x + 18

In simplified form, 3 (4x + 6) - 9x is 3x + 18.

Hope this helps!

5 0

4 years ago

Read 2 more answers

Madelynne hopped 12 times in 15 seconds.What is her speed in hops per minute?

BabaBlast [244]

60 seconds = 1 minute
60/15 = 4

12 hops in 15 seconds is the same as

4 * 12 hops in 4 * 15 seconds, or

48 hops in 60 seconds, and since 60 sec = 1 min, it equals

48 hops per minute.

7 0

4 years ago

HELP DUE IN 10 MINS!!

fredd [130]

Answer:

D. No, they are not similar.

Step-by-step explanation:

Check the ratio of the two given sides:

MV/VT = 21/49 = 3/7
LV/VU = 8/28 = 2/7

Ratios are different so the triangles are not similar

Correct choice is D

5 0

3 years ago

According to this diagram, what is cos 28°? 62° 17 8 28° 90° 15 O A. 17 15 O B. 8 17 O c. 15 17 O D. O E. 8 15 15 OF.

VikaD [51]

Answer:

C. $Cos(28) = \frac{15}{17}$

Step-by-step explanation:

Recall: SOHCAHTOA

Thus,

$Cos(\theta) = \frac{Adjacent}{Hypotenuse}$

Reference angle = 28°

Adjacent = 15

Hypotenuse = 17

Plug in the values

$Cos(28) = \frac{15}{17}$

4 0

3 years ago

What must be true in order for p (a or b) = p(a) + (b)

anyanavicka [17]

A and B must be disjoint. You have, by the inclusion/exclusion principle, that

$\mathbb P(A\cup B)=\mathbb P(A)+\mathbb P(B)-\mathbb P(A\cap B)$

where the last term is required to prevent double counting. When $A$ and $B$ are disjoint, you have $A\cap B=\emptyset$ and $\mathb P(A\cap B)=0$ , leaving you with

$\mathbb P(A\cup B)=\mathbb P(A)+\mathbb P(B)$

7 0

3 years ago