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2 years ago

A movie is 1 7/8 hours long. After 45 minutes, how much of the movie is left?

Mathematics

1 answer:

Tcecarenko [31]2 years ago

4 0

Almost 45 minutes. I’m just guessing no

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2y = x - 4 4x + 3y = 5

MakcuM [25]

Answer:

the answer is, {x,y} ={2,1}

Step-by-step explanation:

1) 4x - 3y = 5 2) x + 2y = 4 3) 4•(-2y+4) - 3y = 5 4) - 11y = -11 5) 11y = 11 y = 1 6) x = -2y+4 y = 1 7) x = -2(1)+4 = 2 = {x,y} = {2,1} !!!

8 0

3 years ago

Math question help me please

nignag [31]

Answer:

he 8 times

Step-by-step explanation:

so he mows 5 time his sister which is 9 but it says 3 for the sister instead of 4 making it 8

3 0

3 years ago

2. Kirk is reading a science fiction novel. After his first 20 minutes of reading, he sees that he's read 32 pages of

coldgirl [10]

343 minutes i’m guessing

4 0

2 years ago

Read 2 more answers

Please can I have an explanation also, I am terrible at these kinds of questions!

wlad13 [49]

Answer:

The fraction of the beads that are red is

Step-by-step explanation:

Algebraic Expressions

A bag contains red (r), yellow (y), and blue (b) beads. We are given the following ratios:

r:y = 2:3

y:b = 5:4

We are required to find r:s, where s is the total of beads in the bag, or

s = r + y + b

Thus, we need to calculate:

$\displaystyle \frac{r}{r+y+b} \qquad\qquad [1]$

Knowing that:

$\displaystyle \frac{r}{y}=\frac{2}{3} \qquad\qquad [2]$

$\displaystyle \frac{y}{b}=\frac{5}{4}$

Multiplying the equations above:

$\displaystyle \frac{r}{y}\frac{y}{b}=\frac{2}{3}\frac{5}{4}$

Simplifying:

$\displaystyle \frac{r}{b}=\frac{5}{6} \qquad\qquad [3]$

Dividing [1] by r:

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+y/r+b/r}$

Substituting from [2] and [3]:

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{1+3/2+6/5}$

Operating:

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{1}{\frac{10+3*5+6*2}{10}}$

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{10+15+12}$

$\displaystyle \frac{r}{r+y+b}=\displaystyle \frac{10}{37}$

The fraction of the beads that are red is $\mathbf{\frac{10}{37}}$

8 0

3 years ago

Determine whether the graphs of y=-7x-4 and -y=7x+4 are parallel, perpendicular, coincident or none of these

horsena [70]

we are given

$y=-7x-4$

$-y=7x+4$

we can multiply -1 on both sides of second equation

$-1*-y=-1(7x+4)$

$y=-7x-4$

we can see that

both equations becomes same

so, they are coincident............Answer

5 0

3 years ago

Read 2 more answers