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Brut [27]
3 years ago
6

NEED HELP PLEASE ASAP THIS A FUNCTION HELP!!!

Mathematics
1 answer:
andrey2020 [161]3 years ago
4 0
You have to deal with this type of question step by step. Firstly, you can figure out all the unknown values (such as sqrt x-3), by substituting x for 19, as you are trying to figure out f(x) when x=19. Therefore:
x+2=21
sqrt(x-3)=sqrt(19-3)=sqrt 16=4
Now the equation is easier to handle:
3/21 - 4
We can write this as 3/21 - 4/1 , which equals -27/7.
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A box contains 9 green marbles and 17 white marbles. If the first marble chosen was a white marble, what is the probability of c
pshichka [43]

Answer:

16/25

Step-by-step explanation:

Given

Number  of green marbles = 9

Number of White marbles = 17

Total number of marbles = 26

Probability of picking a white marble = 17/26

When a white marble is picked without replacement,

Probability of picking another white marble after first picking a white marble

= 16/25

= 0.64

This is because the total number of marbles would have reduced from 26 to 25 and the number of white marbles from 17 to 16.

4 0
3 years ago
For the point P(-25,10) and Q​,(-18,15) find the distance​ d(P,Q) and the coordinates of the midpoint M of the segment PQ.
Salsk061 [2.6K]

Step-by-step explanation:

I really hope that that will be helpful to you

3 0
2 years ago
Equation of the line which passes through point (0,5) at gradient of - 1​
bonufazy [111]

Answer:

y = - x + 5

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here gradient (slope) = - 1 and (0, 5) ⇒ c = 5

y = - x + 5 ← equation of line

5 0
2 years ago
Which rates are equal? Choose 2. A. $28 per 8 salads B. $42 per 12 steaks C. $45 per 18 rolls of paper towels D. $57 per 20 boxe
Assoli18 [71]
A = 3.5
b = 3.5
c = 2.5
d = 2.85
e = 2.6
The two unit rates that are equal are a and b
28 per 8 salads and 42 per 12 steaks have equal unit rates.
5 0
3 years ago
What is the surface area
Yanka [14]

Answer:

170ft

Step-by-step explanation:

A=2(wl+hl+hw) is the equation

4 0
3 years ago
Read 2 more answers
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