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3 years ago

Help pls!1!1!1!1!!1!1

Mathematics

2 answers:

krok68 [10]3 years ago

6 0

Answer:

Step-by-step explanation:

Artyom0805 [142]3 years ago

5 0

Answer AND Step-by-step explanation:

I'm not really sure, but I'm pretty sure the answer is D.

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WILL GIVE BRAINLIEST

Alja [10]

A. The pair of linear equations are: x + y = 55 and y = x + 25

B. Number of time she spend running everyday is: 15 minutes.

C. It is not possible.

<h3>How to Write a System of Linear Equations?</h3>

A system of equations consist of linear equations that have unknown variables whose values make the linear equations in the system true.

<u>Part A:</u> To write a pair of linear equations, do the following,

Let x represent the time Jackie runs

Let y represent the time Jackie dances

We are given that, Jackie runs and dances for a total of 55 minutes every day, therefore, the first linear equation would be:

x + y = 55 --> equation 1

We are also given that Jackie dances for 25 minutes longer than she runs, therefore, the second linear equation would be:

y = x + 25 --> equation 2

Therefore, the two pair of linear equations that shows the relationship between the number of minutes Jackie runs and dances everyday are:

x + y = 55

y = x + 25

Part B: Substitute y = (x + 25) into equation 1

x + y = 55 --> equation 1

x + x + 25 = 55

2x + 25 = 55

2x = 55 - 25

2x = 30

x = 15

Therefore, the number of time she spend running everyday is: 15 minutes.

Part C:

If she spent 45 minutes dancing (y = 45), and x = 15, substitute the values into x + y = 55 to find out if it is possible.

15 + 45 = 55

60 = 55 (not true)

Therefore, it is not possible.

Learn more about the system of equations on:

brainly.com/question/13729904

#SPJ1

8 0

2 years ago

(-2g^3h)(-3gj^4)^2(-ghj)^2

ratelena [41]

QUESTION -

(-2g^3h)(-3gj^4)^2(-ghj)^2

ANSWER -

−18g^7h^3j^10

Hope i helped have a wonderful day..can i get Brainliest please and thank you...

4 0

3 years ago

D= number of dollars

padilas [110]

The table

d n

4 1

8 2

16 4

Table

d n

1 4

4 16

16 64

and

The equation n=4d

Equation:

d = 16n

Step-by-step explanation:

The unit in the unit rate is dollars per unit ounces which means that the unit rate calculated by

$Unit\ rate = \frac{dollars}{ounces}$

So,

The first option is the equation:

$d = 16n\\\frac{d}{n} = 16$

The unit rate is 16 dollars per ounce

The second option is the table:

d n

1 4

4 16

16 64

We can take any pair of values of d and n from the table to calculate the unit rate

So taking

d = 1

n=4

$Unit\ rate = \frac{d}{n}\\= \frac{1}{4}$

The unit rate for table is: 1/4 dollars per ounces

Third option is the equation:

n = 4d

$n = 4d$

dividing both sides by n

$\frac{n}{n} = \frac{4d}{n}\\1 = \frac{4d}{n}$

dividing both sides by 4

$\frac{1}{4} = \frac{4d}{4n}\\\frac{d}{n} = \frac{1}{4}$

the unit rate is 1/4 dollars per ounce

Fourth option is the table:

d n

4 1

8 2

16 4

We will take any pair of d and n to find the unit rate

So,

Taking

d = 4

n =1

$Unit\ rate = \frac{d}{n} \\= \frac{4}{1}\\=4$

The unit rate is 4 dollars per unit ounce.

Keywords: Unit rate, units

Learn more about unit rate at:

#LearnwithBrainly

7 0

3 years ago

Fencing costs $25.80 per yard. How much does it cost to enclose two adjacent rectangular pastures as shown x=50 5/8 y=30 2/9

Maslowich

Answer:

54.65

Step-by-step explanation:

5 0

3 years ago

What is 8/9 simplified

Rufina [12.5K]

Answer:

it can't be anymore simplified

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers