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3 years ago

On the number line, a point was moved from -7 to -3. Which of the following problems describes this move?

Mathematics

2 answers:

ladessa [460]3 years ago

6 0

0-7+3=-4 because a negative and a positive make the negative go down

castortr0y [4]3 years ago

4 0

Answer:

-7 + 4 = -3

Step-by-step explanation:

So you start at -7 and if you add a positive number to a negative number you basically subtract from the negative number, so you would do -7 + 4 which equals -3

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What type of power function is represented in the table?

Alisiya [41]

It is quadratic your welcome

7 0

3 years ago

Rachel earned $34 in 4 hours at her job today. She wants to know how much she could earn tomorrow if she works 12 hours at the s

Nutka1998 [239]

Answer:

34/4 = 8.5 dollars per hr

12 x 8.5 = 102

Answer: $102

Step-by-step explanation:

First step: find the unit rate (how much she earns per hour )

34/4 = 8.5

Next: Find how much she wants to work for

Then: Create the equation.

12 x 8.5

Last: multiply 12 and 8.5 and you should get your answer of 102 dollars

REMEMBER TO ADD THE DOLLAR SIGN

5 0

3 years ago

Read 2 more answers

<img src="https://tex.z-dn.net/?f=6%20-%205x%20%2B%206%20%3D%204" id="TexFormula1" title="6 - 5x + 6 = 4" alt="6 - 5x + 6 = 4" a

Elanso [62]

$\bf 6-5x+6=4\implies -5x+12=4\implies \stackrel{\textit{adding 5x to both sides}}{12=4+5x}\\\\\\\stackrel{\textit{subtracting 4 to both}}{8=5x}\implies \cfrac{8}{5}=x\implies 1\frac{3}{5}=x$

5 0

3 years ago

Read 2 more answers

Let X be a continuous random variable with probability density function: fX(x) = ( 3 4 x (2 − x) 0 ≤ x ≤ 2 0 otherwise. (a) Dete

nikklg [1K]

Answer:

attached below

Step-by-step explanation:

Given : FX (x) = 3/4x (2-x) 0 ≤ x ≤ 2

a) Calculate the cumulative distribution function FX

Cdf =

attached below is the detailed solution

b) Let Y = √ X. determine CDF

attached below

c) calculate PDF

4 0

3 years ago

Help please, Mathematics! If there's a formula include that too, please

mario62 [17]

Answer:

24 Combinations Total

Step-by-step explanation:

METHOD 1 (no advanced math skills needed)

i. Number the friends: a, b, c, and d

ii. List all possible combinations...

a b c d
a b d c
a c b d
a c d b
a d b c
a d c b
b a c d
b a d c
b c a d
b c d a
b d a c
b d c a
c a b d
c a d b
c b a d
c b d a
c d a b
c d b a
d a b c
d a c b
d b a c
d b c a
d c a b
d c b a

To speed up the process instead of sitting here and listing 24 combinations, after two sections you can see that with friend "a" sitting all the way at the left there are six combinations and the same goes for friend "b". You can then multiply 6 (number of combinations with that friend first) and 4 (friends) to get 24.

METHOD 2

n! means the total number for permutations calculation (1 x 2 x ... until you reach n ) = 24

6 0

3 years ago