Help please I don’t understand

Answer:

The answer is 4

Step-by-step explanation:

You just divide 80 by 15.

She can jump rope 20 times in 15 seconds

The ratio is defined as a relationship between two quantities, it is expressed as one divided by the other.

Arithmetic operations can also be specified by adding, subtracting, dividing, and multiplying built-in functions.

The operator that performs the arithmetic operations is called the arithmetic operator.

* Multiplication operation: Multiplies values on either side of the operator

For example 4*2 = 8

/ Division operation: Divides left-hand operand by right-hand operand

For example 4/2 = 2

Given that Jen can jump rope 80 times in 60 seconds.

We have to determine the number of jumps can she make in 15 seconds.

Let the number of jumps would be x she can make in 15 seconds

Since she jumps at a constant ratio of seconds to jumps

So according to proportionality,

⇒ 80/60 = x/15

⇒ x = 15(80/60)

⇒ x = 20

Hence, she can jump rope 20 times in 15 seconds.

Learn more about the Ratio here:

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the cause of the procastination maybe because she can actually do it herself .it never mentioned that it was hard for her.maybe she get excited about the subject she have to work for hard

Answer:

her lack of interest in chemistry

Step-by-step explanation:

Answer:

n = 20

Step-by-step explanation:

n = 12 / (3 / 5)

n = 12 x 5/3

n = 4 x 5

n = 20

Hope that helps!

Answer:

dont knoiw

Step-by-step explanation:

sorry

Answer:

11. A) 12

12. D)11

Step-by-step explanation:

11. We substitute x with 12 in 3(x)-11.

3(12)-11=

36-11= 25

We substitute x with 12 for the second equation (x+13).

12+13=25

Both answers match so the answer for #11 is 12.

12.We substitute x with 11 in 4(x)-4.

4(11)-4=

44-4=40

We substitute x with 11 for the second equation (2(x)+18)

2(11)+18=

22+18=40

Both answers match so the answer for #12 is 11.

Answer: 38% of fish decrease when passing through a single dam

Step-by-step explanation: you would take 100% - 62% which equals 38%

a)

30.65^2/(2*5.15)=91.2061

d=91.2061

b)i)90

ii) Mathswatch is critical of anything apart from it's system so I dont know what the answer is for this one

Answer:

15x^2-24x+9

Step-by-step explanation:

Answer:

84 and 35

Step-by-step explanation:

12 - 5 = 7

12(7) = 84

5(7) = 35

Two numbers: 84 and 35

Step-by-step explanation:

Let the two numbers be x and y

Given:

Ratio of two numbers= 12:5

Difference between two numbers= 49

So, we need to find the difference between its ratio in order to get two numbers.

12 - 5 = 7

Thus, simply on multiplying the number so obtained after subtraction we will get:  

12 * (7) = 84

5 * (7) = 35

Also, the difference is given which is 49

so, we can confirm it by finding the difference between the numbers obtained which is 84-35=49

Therefore, the two numbers are 84 and 35.

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For the red figure: Translate 1 unit down then 3 units left, and for the blue figure: Reflect the figure at the y-axis.

It is defined as the change in coordinates and the shape of the geometrical body. It is also referred to as a two-dimensional transformation. In the geometric transformation, changes in the geometry can be possible by rotation, translation, reflection, and glide translation.

It is given that:

The figures are given in the picture:

For the red figure: Translate 1 unit down then 3 units left.

For the yellow figure: translate 5 units down and then 2 units right

For the blue figure: Reflect the figure at the y-axis.

Thus, for the red figure: Translate 1 unit down then 3 units left, and for the blue figure: Reflect the figure at the y-axis.

Learn more about the geometric transformation here:

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Answer: Adjacent Angles: (1,2) and (3,4)

Vertical Angles: (1,3) and (2,4)

Step-by-step explanation:

Adjacent means that the two angles add up to 180 (in other words they form a straight line).

Vertical means that they are opposite from each other and have the same equal value.

hope this helps :)

Answer:

Adjacent angle are 4,2 and 1,3. The Vertical angles are 1,2 and 3,4.

Step-by-step explanation:

Answer:

20m

Step-by-step explanation:

A=s^2

root 25=s

s=5m

so to find perimeter we will use the formula 4s

P=4×5

P=20m

please mark as brainliest

Answer:

The perimeter of the square must be 20m

Step-by-step explanation:

•Area of a square = side²

25m² = side²

5 m = side (square root)

•Perimeter of a square = 4 x side

4 x 5m

20m

Answer:

till 15 days.

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U can earn 5 dollars also

message me your email password

Answer:

X : ___ 0 ____ 1 _____ 2 ______ 3

P(X) : _ 6/15 __ 5/15__ 3/15 ____ 1/15

Step-by-step explanation:

From the data, to produce a probability distribution for the data :

X : number of times blood is drawn ;

P(x) : probability that blood is drawn at X times

Hence, the probability distribution table for the data Given goes thus :

X : ___ 0 ____ 1 _____ 2 ______ 3

P(X) : _ 6/15 __ 5/15__ 3/15 ____ 1/15

Probability that blood is drawn 0 times = 6/15

Probability that blood is drawn 1 time = 5/15

Probability that blood is drawn 2 times = 3/15

Probability that blood is drawn 3 times = 1/15

(6/15 + 5/15 + 3/15 + 1/15) = 1

Answer:

1. The distance between the points R and U is 4 feet

2. The length of the side between U and T is 3 feet

The length of the side between T and S is 4 feet

The length of the side between S and R is 3 feet

3.The perimeter of the pen is 14 feet

4. Yes

Liu has enough fence to make the Pen because he has more fence than the perimeter of the pen

Step-by-step explanation:

The 'x', and 'y' (x, y) coordinates of the points are;

R(5, 7), U(5, 3), S(8, 7), T(8, 3)

1. From the graph, the distance between the points R and U is given by the change in the values of the y-coordinate, given in feet, since the x-coordinate values are the same

Therefore, the distance between the points R and U = 7 ft. - 3 ft. = 4 ft.

2. Similarly, the length of the side between U and T is given by the change in the values of the x-coordinate, given in feet, since the y-coordinate values of U ant T are the same, as follows;

The length of the side between U and T = 8 ft. - 5 ft. = 3 ft.

Similarly the length of the side between T and S which have the same x-coordinate values is given as follows

The length of the side between T and S = 7 ft. - 3 ft. = 4 ft.

The length of the side between S and R which have the same y-coordinate values is given as follows;

The length of the side between S and R = 8ft. - 5ft. = 3ft.

3. The perimeter of the pen = Length R and U + Length U and T + Length T and S + Length S and R

∴ The perimeter of the pen = 4 ft. + 3 ft. + 4 ft. + 3 ft. = 14 ft.

4. The length of fencing Liu has = 16 feet (from internet source)

Therefore, the length of fence Liu has, 16 ft.is more than the length that make up the perimeter of the pen, 14 ft.

Therefore Liu has enough fence to make the Pen because the length of fence he has is more than the perimeter of the pen.

Answer:

(8,0)

Step-by-step explanation:

y=mx+b

0=(3/4)0+b

0=b

y=3/4x+0

the point eight units away from (0,0)

is (8,0)

Hope this helps :)

Answer:MARK ME AS BRAINLIEST

MEGA Drink = $10+2x

LARGE Drink = 2x

MEDIUM Drink = x

hence, we conclude that

($10+2x) + 2x + x = $45

$10+2x + 2x + x =$ 45

5x + $10 = $45

5x = $45-$10

5x = $35

x = 35÷5

x = 7

MEGA DRINK = (10+2X)

10+2×7

10+14

24

LARGE DRINK = 2X

2×7 = 14

MEDIUM DRINK = X

7

Step-by-step explanation:

[tex]

\sqrt{312 \times 312} \\ = \sqrt{312 ^{2} } \\ = 312

[/tex]

Hope it will help :)❤

Answer:

√{312×312}=√312²=±312 is your answer

Answer: 9 and 8?

Step-by-step explanation:

Answer:

250 I think

Step-by-step explanation:

Try 250

SORRY If I am wrong

Step-by-step explanation:

dn means the difference (meaning what do you add/subtract to get the next number)

T0 means the term before the first one you got.

Tn = dn + T0

Tn = 2n + 0

Therefore our equation will be

Tn = 2n

Or in your case

An= 2n

Answer:

Mrs. Smith's class

Step-by-step explanation:

7/30 = 23.3%

5/25 = 20%

Answer:

Choice 1

Step-by-step explanation:

Answer:

x<-1 and Number 1

Step-by-step explanation:

:)

Step-by-step explanation:

10 + 5x = 10 + 5(15)

= 10 + 75

= 85°

4x - 10 = 4(15) - 10

= 60 - 10

= 50°

6x - 5 = 6(15) - 5

= 90 - 5

= 85°

Answer:

goldfish

Step-by-step explanation: