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4 years ago

SHOW YOUR WORK!!! Marking best answer as brainliest :))

Mathematics

1 answer:

Wewaii [24]4 years ago

4 0

Answer:

-25

Step-by-step explanation:

You must first pick two points. I picked the points of (4, 400) and (8, 300). You can pick different points and still get the right answer.

Subtract the y's and the x's. Divide the difference of y by the difference of x.

400 - 300 = 100

4 - 8 = -4

100/-4 = -25

The slope, or rate of change, is -25.

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A candy store merchant sells 25kg ju-jubes for $3.00/kg. If he uses one brand selling for $2.25/kg and a second brand selling at

Flauer [41]

Let's say he has 1 kg of each
2.25/kg and 3.75/kg
add together and divide by 2 to get average
6/2=3

so it must be a one to one ratio

25 kg/2=12.5 kg of each

12.5 of each brand

6 0

3 years ago

Scott is reading two books at the same time to prepare for a report he is writing. So far, he has read 407 of the total number o

Hitman42 [59]

Answer:

The system of equations are

x+y=557

$\frac35x+\frac56 y=407$

The total pages in shorter book is 245

The total pages in longer book is 312

Step-by-step explanation:

Given that,

Scott has read 407 of the total number of 557 pages, which $\frac35$ of the shorter book and $\frac56$ of longer book.

Total number of pages of shorter book be x and longer book be y.

Then,

$\frac35$ page of the shorter book $=\frac35 x$

$\frac56$ pages of the longer book = $\frac56y$

So, he has read $=\frac35x+\frac 56y$

Total number of pages of both book is = x+y

According to the problem,

x+y=557.........(1)

$\frac35x+\frac56 y=407$ .......(2)

We can write equation (2) as

$\frac35x+\frac56 y=407$

$\Rightarrow \frac{18x+25y}{30}=407$

$\Rightarrow {18x+25y}=407\times 30$

$\Rightarrow {18x+25y}=12,210$ ......(3)

Now 18 times of equation (1) subtract from equation (3)

18x+25y=12210

18x+18y=10026

- - -

_______________

25y-18y=12,210-10,026

⇒7y=2,184

$\Rightarrow y=\frac{2184}{7}$

⇒y= 312

Plug y=312 in equation (1)

x+312=557

⇒x=557-312

⇒x=245

The total pages in shorter book is 245

The total pages in longer book is 312

5 0

3 years ago

17297828288+516-5166617

alexdok [17]

Answer: 17297828288+516-5166617 = 17292662187

Step-by-step explanation:

3 0

4 years ago

What is -6 9/10 written as a decimal

ryzh [129]

-6.9~ -6 is the whole number and 9/10 is the fraction. 9/10 equals 0.9

6 0

3 years ago

Read 2 more answers

Mark and Don are planning to sell each of their marble collections at a garage sale. If Don has 5 more than 4 times the number o

4vir4ik [10]

Mark has 18 and Don has 77 number of marble to sell.

Let’s say Mark has x number of marble and Don’s marble number is y.

According to this problem we have,

Y = 4x +5

And x + y = 95

Or, x + 4x + 5 = 95

Or, 5x = 90

Or, x = 18 and y = 77

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brainly.com/question/13450942

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6 0

2 years ago