pls help me i give brainliest

The probability that a student studied for 5 hours is 0.23 Or 23%.

Probability is the chance of occurrence of a certain event out of the total no. of events that can occur in a given context.

A table is given where the first column represents the number of hours a student studied maths and the second column represents the number of students.

The sum of the second column is 30 so it is the total number of students

And only 7 of them studied mathematics for 5 hours.

Therefore, The probability that a student studied for 5 hours is,

= 7/30.

= 0.23 or 23%.

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Answer:

Step-by-step explanation:

1-y=0.6t

2- y=0.6t=8

3-14x0.6

4-13.4

Answer:

3/4

Step-by-step explanation:

Since (p, r) lies on the line y = x + b,

we have,

r = p + b -----eq(1)

Since (2p, 5r) lies on the line y = 2x + b,

we have,

5r = 2(2p) + b -----eq(2)

Sub the value of r from eq(1) in eq(2),

5(p + b) = 4p + b

⇒ 5p + 5b = 4p + b

⇒ 5b - b = 4p - 5p

⇒ 4b = -p

⇒ b = -p/4

sub in eq(1)

r = p + (-p/4)

= p - p/4

= 3p/4

⇒ r = 3p/4

⇒ r/p = 3/4

Answer:

3/4

Step-by-step explanation:

We have two lines:

r = p + b     eq(1)

5r = 4p + b   eq(2)

eq(2) - eq(1)

4r = 3p

dividing by 4p

r/p = 3/4

Answer:

(10t + u)(10u + t) = 4,930

100tu + 10t^2 + 10u^2 + tu = 4,930

101tu + 10t^2 + 10u^2 = 4,930

10t^2 + (101u)t + (10u^2 - 4,930) = 0

(101u)^2 - 4(10)(10u^2 - 4,930)

= 10,201u^2 - 400u^2 + 197,200

= 9,801u^2 + 197,200

We see that u = 5 gives 442,225.

√442,225 = 665

(10t + 5)(50 + t) = 4,930

500t + 10t^2 + 250 + 5t = 4,930

10t^2 + 505t - 4,680 = 0

2t^2 + 101t - 936 = 0

t = (-101 + √(101^2 - 4(2)(-936)))/(2×2)

= (-101 + √17,689)/4

= (-101 + 133)/4 = 32/4 = 8

So the numbers are 58 and 85.

58 + 85 = 143

Answer:

y = 780 - 20x

Step-by-step explanation:

Answer:

D is the right choice and no you cannot fit the pizza inside the box.

Step-by-step explanation:

D is the answer because to turn 2/3 into a decimal you would divide 2 by 3 and the answer you would get would be 0.66666666666...You would then add 12 to the answer and get 12.6666... Once you get this answer you would round it to the hundredths to get 12.67 but since that is not an option you could use D, 12.66 inches.

Answer:

I believe the answer is D.

Step-by-step explanation:

GOOGLE

Answer: 45.

Step-by-step explanation: I'm not the greatest at math but I do believe that is the answer.

Answer:

yea

Step-by-step explanation:

cuz then there would be a graph and stuff and you would analyze which student spends more time

Answer:So I don’t know the other 5 points because you didn’t give the data about the age and number of US states named in 60 seconds, but using the 5coordinate points you gave, I was able to make this line of best fit.

So basically the units are counting up by 5.

The x axis is age in years and y axis is the number of US states named in 60 seconds.

Since you didn’t give me the data to make the other 5 points, I can’t really answer the last question, but from the graph that I did make, there are no points that would be considered outliers, and there are no clusters in sight.

(BTW THIS IS IMPORTANT!! - when you use the data to add the other 5 points, there might be an outlier or more then one outlier. And there might be a cluster. Just look at it after you graph the last 5 and change the answer I gave you if there is an outlier or cluster)

Step-by-step explanation:

To solve for c in the equation c + 7 = -14, you would subtract 7 from both sides of the equation.

Answer:

A and D would be your 2 sample spaces

Step-by-step explanation: because we can see its clearly not C or E so that leaves us with A , B, and D. I belive that B isnt a asnswer choice so that leaves A, and D

mark me brainless please it helps me

hope this helps

I would say A and D

There is no way that E and C are the answer. B is a no because TG…? What does TG mean? Some of the letters in choice B doesn’t make sense to me.

Answer: the answer for it would be 20000 or should be

Step-by-step explanation:

4.2e7/2.1e3 should come out to 20000 at least my graphing calc says it should but it should come out to 20k

Answer: the perimeter of the garden is 38 units.

Step-by-step explanation:To find the perimeter of the garden, we need to add up the lengths of all four sides.

Starting with the bottom side, we can use the coordinates (-7, 2) and (4, 2). The distance formula tells us that the distance between these two points is:

d = √[(4 - (-7))^2 + (2 - 2)^2]

 = √[11^2 + 0^2]

 = √121

 = 11

So the bottom side has a length of 11.

Moving to the right side, we can use the coordinates (4, 2) and (4, 10). Again using the distance formula, we get:

d = √[(4 - 4)^2 + (10 - 2)^2]

 = √8^2

 = 8

So the right side has a length of 8.

For the top side, we can use the coordinates (4, 10) and (-7, 10):

d = √[(-7 - 4)^2 + (10 - 10)^2]

 = √11^2

 = 11

So the top side also has a length of 11.

Finally, for the left side, we can use the coordinates (-7, 10) and (-7, 2):

d = √[(-7 - (-7))^2 + (2 - 10)^2]

 = √8^2

 = 8

So the left side has a length of 8.

Adding all four side lengths together, we get:

Perimeter = 11 + 8 + 11 + 8

         = 38

Step-by-step explanation:

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Answer:

1.67 + 1.4 = 3.07

2.97 + 0.004 = 2.974

3.017 - 0.05 = 2.967

5.503 - 2.52 = 2.983

Answer:

$5.25 if returned 7 days late

Step-by-step explanation:

So we know that 4 days late is 3 dollars

We can find the unit rate

3/4 is 0.75

So 75 cents for every late day

Now we just multiply that by 7

0.75*7=5.25

so 7 days, 5.25

**porportional relationship equation**

\(\frac{3dollars}{4 days}\)=\(\frac{X}{7 days}\)

Now cross multiply

21=4x

x=5.25

Same results

Answer:

First number: 12

Second number: -3

Step-by-step explanation:

First, let's establish some variables:

x= first number

y= second number

Now, let's turn what is told to us into equations:

The first number minus the second number is 15

  x - y = 15

One-third of the sum of the numbers is one quarter of the first number

 1/3 ( x + y ) = 1/4 ( x )

Now, let's use the first equation given to us to find x in terms of y:

x - y = 15     [Add y to both sides]

x = y + 15

Next, we will take the value of x we found and plug it into the second equation:

1/3 ( x + y ) = 1/4 ( x )     [Plug in x]

1/3 ( {y + 15} + y ) = 1/4 ( {y + 15} )     [Combine like terms]

1/3 ( 2y + 15 ) = 1/4 ( {y + 15} )     [Distribute on both sides]

(2/3)y + 5 = (1/4)y + 15/4     [Subtract 15/4 from both sides]

(2/3)y + (5/4) = (1/4)y     [Subtract (2/3)y from both sides]

5/4 = (-5/12)y     [Multiply both sides by -12/5]

-3 = y

Since we have now found the value of y, let's plug it into our first equation to find the value of x:

x - y = 15     [Plug in y]

x - (-3) = 15     [Simplify]

x + 3 = 15     [Subtract 3 from both sides]

x = 12

So, our first number must be 12 while our second number is -3.

If this answer helped you, please leave a thanks or a Brainliest!!!

Have a GREAT day!!!

Answer:

-12 and 3

Step-by-step explanation:

Let first no. be x

First number - Second number = 15

So, x - 2nd no. = 15

Second number = 15 + x

First number = x

Now, One-third of the sum of numbers is = \(\frac{x+(15+x)}{3} = \frac{15+2x}{3}\)

One-quarter of first number = \(\frac{x}{4}\)

Now,

\(\frac{15+2x}{3} = \frac{x}{4}\)

= 4(15+2x) = 3x

= 60 + 8x = 3x

= 60 = -5x

= -12 = x

Hence, First number = -12

Second number = -12 + 15 = 3

Check:

\(\frac{15-24}{3} = \frac{-12}{4}\)

= \(\frac{-9}{3} = -3\)

= -3 = -3

Hence, proved!

Hope it helped. Pls mark me the BRAINLIEST!

Answer: The multiplicative inverse is 1/2 the addition inverse is -2

Step-by-step explanation:

Since the inverse of multiplication is division, use a fraction. The inverse of addition is subtraction.

Answer:

6 gallons of gas

Step-by-step explanation:

20.00 - 2.12 = 17.88

17.88 divided by 2.98 equals 6

Answer:

The missing top number is 48 and the bottom numbers are 1, 2, 4, 5

Step-by-step explanation:

2 x 24 = 48

96/24 is 4

120/24 = 5

Answer:

the second integer is 35

Answer:

So, if there's an answer that's 30 that'd be it.

Step-by-step explanation:

15 + 30 = 50 therefore you add it up.

Answer: 1,600 ml

Step-by-step explanation:

You can arrive at this answer by subtracting the amount of cough syrup used (1,200 ml) from the initial amount in the bottle (2.8 L, which is 2,800 ml).

2,800 ml - 1,200 ml = 1,600 ml

I hope this helps :)

Answer: 1,600 mL

Step-by-step explanation:

1. convert the 1,200 mL to L, which is 1.2 L.

2. Subtract that value from 2.8 L, equaling 1.6 L

3. Convert the 1.6 L back into mL by multiplying by 1000, which is equivalent to 1600 mL.

Answer: 6 inches

Step-by-step explanation:

Because there are a total of 6 sticks that are 7/8 of an inch, all you need to do is multiply 6 by 7/8ths and then add the one stick that is 6/8ths of an inch.

6 x 7/8

6/1 x 7/8

42/8

5.25 in

6/8 + 5.25

0.75 + 5.25

6 in