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lys-0071 [83]
2 years ago
12

Solve by using elimination or substitution. You must show all your work for credit.

Mathematics
1 answer:
RoseWind [281]2 years ago
7 0

Answer:

Step-by-step explanation:

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The probability of drawing jacks from a deck of cards in ten different trials where cards are replaced after each trial
Gelneren [198K]
Sample space={52 cards} = All possible outcomes
Favorable event {4 Jacks}
Important info: CARD is replaced after each trial

P(drawing Jack) = 4/52 = 1/13 = 0.0769 
It will always be 0.0769 whatever the number of trials

4 0
3 years ago
What are the values of x and y?<br><br> (9x - 19y)<br> (5x - 17)<br> (3x + 3)º<br> X =<br><br> y =
TEA [102]

Answer: x = 10 and y = 3

Step-by-step explanation:

Due to the x rule, (5x - 17) = (3x + 3)

If we add 17 to both sides:

5x = 3x + 20

Take away 3x from both sides

2x = 20

Divide by 2:

X = 10

This means that (5x - 17) = (3x + 3) = 33

Since all angles must add to 360, the top angle = (360- (33*2)) /2

(360-66) /2

294 /2

147

This shows that 9x - 19y = 147

90 - 19y = 147

Minus 90 both sides

19y = 57

Y = 3

So, x = 10 and y = 3

6 0
2 years ago
an adult elephant that is 10ft tall casts a shadow that is 15ft long. find the length of the shadow that a 8ft telephone booth c
nadya68 [22]

Answer:

The length of the shadow the telephone booth is <u>12 ft</u>.

Step-by-step explanation:

Given:

An adult elephant that is 10 ft tall casts a shadow that is 15 ft long.

The length of the telephone booth is 8 ft.

Now, to find the length of the shadow the telephone booth casts.

Let the length of the shadow the telephone booth be x.

As given, an adult elephant that is 10 ft tall casts a shadow that is 15 ft long.

So, 10 ft is equivalent to 15 ft.

Thus, 8 ft is equivalent to x.

Now, to get the length of the shadow of the booth we get cross multiplication method:

\frac{10}{15} =\frac{8}{x}

<em>By cross multiplying we get:</em>

10x=120

<em>Dividing both sides by 10 we get:</em>

x=12.

Therefore, the length of the shadow the telephone booth is 12 ft.

3 0
3 years ago
Mr. T's Tea store has two kinds of tea. Tea A costs $9 per pound and Tea B cost $6 per pound. How many pounds of each should be
harina [27]

Answer:

y=447.3 pounds

x= 297.3 pounds

Step-by-step explanation:

Step one:

given data

Tea A costs $9 per pound and

Tea B cost $6 per pound.

let the number of pounds of Tea A be x

and for Tea B be y pounds

The total cost of the mixture = $8 per pound

hence

9x+6y=8---------1

The total weight of the mixture

150 pounds

x+y=150-----------2

Step two:

9x+6y=8---------1

x+y=150---------2

from eqn 2 x=150-y

put x= 150-y in eqn 1

9(150-y)+6y=8---------1

1350-9y+6y=8

1350-8=9y-6y

1342=3y

divide both sides by 3

y= 1342/3

y=447.3 pounds

put y= 447.3 in eqn 2

x+447.3= 150

x= 150-446=7.3

x= -297.3

x= 297.3 pounds

3 0
2 years ago
Please help its due in 30 minutes will mark braniliest
aniked [119]

Answer:

Point A, B, and C are collinear points.

Step-by-step explanation:

When points lie on one line, meaning all of the points are on the same line --> this is known as collinear points.

7 0
2 years ago
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