Probability of a standard six side dice landing on a four in the first three rolls?

3x+2y=4 4x+5y=17 What is the value of x and y?

Fudgin [204]

{3x+2y=4 /*5
{4x+5y=17 /*(-2)

{15x+10y=20
{-8x-10y=-34 (+)
7x=-14
x=-2

15x+10y=20
15*(-2)+10y=20
-30+10y=20
10y=50
y=5

5 0

3 years ago

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List all the pairs of integers with a product of 36. then find the pair whose sum is 20

RoseWind [281]

This is an excellent practice for the solution of quadratic equations.

1*36=36 => (1,36)
2*18=36 => (2,18)
3*12=36 => (3,12)
4*9=36 => (4,9)
6*6=36 => (6,6)
9*4=36 => (9,4)
12*3=36 => (12,3)
18*2=36 => (18,2)
36*1=36 => (36,1)

We can see that the sum decreases until the two factors are close (or equal) and then increases again.

The pair of integers with a sum of 20 is therefore (2,18) or (18,2).

4 0

4 years ago

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To celebrate the first day of winter, Lin was putting stickers on some of the lockers. There are 100 lockers along one side of h

Digiron [165]

Answer:

Step-by-step explanation:

Answer:

2 lockers have both

Step-by-step explanation:

Here, if we have stickers being placed on the 5th and 7th stickers, how many lockers have both stickers

What this question is simply asking us is to find the places where we have both stickers occurring

We can get this in places where there are multiples of both

We have this at 35th locker , 70th locker

5 0

3 years ago

Please help me!

seraphim [82]

Answer:

7.5%

Step-by-step explanation:

one year has 12 months...and in one month the person saves 200

so in one year it will be 200×12 = 2400

%save=total saves/total earning×100

= (2400/32000)×100 = 7.5%

I hope this will help!

4 0

2 years ago

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"The closeness of a measurement to the actual value" is a definition of which term?

Neko [114]

The answer is Accuracy. Accuracy is the closeness of a measurement to the actual vaule.

7 0

3 years ago