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noname [10]
3 years ago
13

To win the small county lottery, one must correctly select 3 numbers from 30 numbers. the order in which the selection is made d

oes not matter. how many different selections are possible?
Mathematics
1 answer:
scoray [572]3 years ago
7 0
3 x30=90 so there are 90 possible answers
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Solve system of linear equation by substitution -x+y=2; 3x-5y=-4
GarryVolchara [31]

Answer:

(-3,-1)

Step-by-step explanation:

-x+y=2

3x-5y=-4

in the top equation, we can get y by itself on one side of the equation:

-x+y=2

y=x+2

now, since we know that y=x+2, in the bottom equation we can substitute x+2 for y (substitution method) and solve:

3x-5y=-4

3x-5(x+2)=-4

3x-5x-10=-4

-2x-10=-4

-2x=6

x=-3

since we now know that x=-3, we can use it to find y by plugging in -3 for x in the top equation (you can do it in either equation, but doing it in the top equation is easier):

y=x+2

y=-3+2

y=-1

answer: (-3, -1)

7 0
3 years ago
Write the equation of a line with a slope of −2 and a y-intercept of 5
Aleonysh [2.5K]
Y or f(x) = -2x+5

the slope goes with the variable (x) and when the value of x is entered it makes a line, and the y-intercept is next to show where the point is on the y - line
8 0
4 years ago
What is 2 3/8 in a improper fraction?
FromTheMoon [43]

Answer:

See below a shorter way to convert 2 3 8 to an improper fraction. Step 1: Multiply the whole number part (2) by the denominator (8). Step 2: Add the product from Step 1 (16) to the numerator (3). Step 3: Write that result (19) above the denominator.

Step-by-step explanation:

hope this helps you if it does plz mark brainiest

4 0
3 years ago
Read 2 more answers
Given the function f(x) square root x+1 -6choose the correct transformation.
Ahat [919]
Down 6
Left 1
I think hope it helps tho
5 0
3 years ago
Which line corresponds to y=2x+5? <br><br> *please see picture*<br> *serious answers only*
Ivahew [28]

Answer:

B

Step-by-step explanation:

the one on the tight becasue try plugging in zero

8 0
3 years ago
Read 2 more answers
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