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Mrac [35]
3 years ago
14

Lisa and Krystal are planning trips to ten countries this year. They have 14 countries on their bucket list, in how many ways ca

n they decide which countries to SKIP? 643 24,024 683 1,001
Mathematics
1 answer:
Salsk061 [2.6K]3 years ago
8 0

Answer:

1,001 ways for them to decide.

Step-by-step explanation:

The order in which they will visit the countries is not important, so we use the combinations formula to solve this question.

Combinations formula:

C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

In this question:

10 countries from a set of 14. So

C_{14,10} = \frac{14!}{10!(14-10)!} = 1001

1,001 ways for them to decide.

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Can someone help me Write an equation for this graph?
makvit [3.9K]

Answer:

y = (2/3)x - 1

Step-by-step explanation:

y = mx + b

m = (y₂ - y₁) ÷ (x₂ - x₁)

m = (1 - (-1)) ÷ (3 - 0)

m = 2 ÷ 3

m = 2/3

Insert slope and one of the points. I'm using (0, -1).

Solve for b.

-1 = (2/3)0 + b

-1 = 0 + b

-1 = b

∴ y = (2/3)x - 1

7 0
3 years ago
The equation of the line is ?
larisa86 [58]

Answer:

Y = mx + b

y = how far up

x = how far along

m = Slope or Gradient (how steep the line is)

b = value of y when x=0

7 0
2 years ago
Jonas went to the local barbershop for a haircut. The haircut cost $20. He gave the barber a 15% tip. What was the total cost, i
o-na [289]
Answer: 23 Dollars

Explanation: First you take 15% and turn it into a decimal, 0.15. Then you times 20 and 0.15 and you get the product of 3. Now you do 3+20 and get your answer of 23.

Please mark as brainliest if i was the most helpful!
4 0
3 years ago
PLEASE HELP ASAP
JulijaS [17]
View the attached photo.

<span>The quadratic function, y = x2, has an x-intercept at the origin  = TRUE
</span>
<span>The quadratic function, y = x2 + 3, has an x-intercept at the origin = FALSE
</span>
<span>From x = -2 to x = 0, the average rate of change for both functions is positive = FALSE

When viewing a graph, you start from the left and go to right and from left to right from -2 to 0 the graph is declining.

</span><span>From x = -2 to x = 0, the average rate of change for both functions is negative = TRUE

Both are declining if you read the graph from left to right.

</span><span>For the quadratic function, y = x2, the coordinate (2, 3) is a solution to the equation of the function. = FALSE
</span><span>
y = x^2
If we insert 2 into y = x^2 we get y = 4 but our point (2,3) has y = 3

</span>For the quadratic function, y = x2 + 3, the coordinate (2, 7) is a solution to the equation of the function. = TRUE

If we insert 2 for x, we see that  y = x^2 + 3 =  y = 2^2 + 3 =  y = 7 and our y value in the point (2,7) is 7. 

3 0
3 years ago
Someone help plss show work​
Mazyrski [523]

Answer:

Slope: \frac{3}{5}

Y-Intercept: (0,-5)

Step-by-step explanation:

1. To find the slope, we need to have the equation in slope-intercept form, which is y=mx+b. In this case, our equation is already in this form. m is what your slope is. In this case, our

2. To find the y-intercept we look at value b that is in y=mx+b. In this case, b is -5. So, our ordered pair is (0,-5).

4 0
3 years ago
Read 2 more answers
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