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Maru [420]
3 years ago
8

Will give brainliest

Mathematics
2 answers:
VikaD [51]3 years ago
6 0

Answer:

b -2/3

Step-by-step explanation:

rise/run

you find two points that intersect a line then do rise over run the slope is negative

Daniel [21]3 years ago
5 0

Answer:b

Step-by-step explanation:

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The lengths of a professor's classes has a continuous uniform distribution between 50.0 min and 52.0 min. If one such class is r
Lady bird [3.3K]

Answer: the probability that the class length is between 50.8 and 51 min is  0.1 ≈ 10%

Step-by-step explanation:

Given data;

lengths of a professor's classes has a continuous uniform distribution between 50.0 min and 52.0 min

hence, height = 1 / ( 52.0 - 50.0) = 1 / 2

now the probability that the class length is between 50.8 and 51 min = ?

P( 50.8 < X < 51 ) = base × height

= ( 51 - 50.8) × 1/2

= 0.2 × 0.5

= 0.1 ≈ 10%  

therefore the probability that the class length is between 50.8 and 51 min is  0.1 ≈ 10%  

5 0
3 years ago
X+4+3x=72<br> x+4+3x=72<br><br> .
Aneli [31]

Answer:

yes it does equal 72

Step-by-step explanation:

4 0
2 years ago
Nine times the input minus seven is equal to the output. If the input is -1, what is the output?
uranmaximum [27]

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

f(x) = 9x - 7

f( - 1) = 9( - 1) - 7

f( - 1) =  - 9 - 7

f( - 1) =  - 16

♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️

7 0
3 years ago
A, b, abd c are polynomials, where A=n, B=2n+6, and C=n^2-1 what is AB-C in simplest form?
never [62]
N(2n+6)-(n²-1)= 2n²+6n-n²+1=n²+6n+1
7 0
3 years ago
You split $1500 between two savings accounts one pays 4%interest and the other pays 5% after one year you have earned $69.50 in
ANTONII [103]

Answer:

Step-by-step explanation:

Use the basic simple interest formula:

P * r * t = I and put the info into a table with those variables along the top, formig the columns we need:

                   P       *       r       *       t      =       I

Acct 1

Acct 2

If we have a total of 1500 to split up between 2 accounts, we put x amount of money into one and then have 1500-x left to put into the other.  We will fill those in along with the interest rates in decimal form and the time of 1 year:

                   P        *        r        *        t        =        I

Acct 1           x               .04                1

Acct 2     1500-x          .05                 1

Looking at the formula we are told that Prt = I, so we will multiply P times r times t and fill in the I column:

                  P        *        r        *        t        -        I

Acct 1         x                 .04              1               .04x

Acct 2    1500-x           .05               1          .05(1500-x)

The total Interest earned by the addition of the interest earned from both accounts is 69.50.  So we add the interest column together and set it equal to 69.50:

.04x + .05(1500 - x) = 69.50 and

.04x + 75 - .05x = 69.50 and

-.01x = -5.5 so

x = 550

That's how much money is in the account earning 4% interest.

7 0
3 years ago
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