All categories

3 years ago

Which expressions are equivalent to 3-8 over 3-4

Mathematics

1 answer:

JulsSmile [24]3 years ago

4 0

Answer:

Either one of $\frac{3-8}{3-4}= \frac{-5}{-1}=\frac{5}{1}=5$ .

Step-by-step explanation:

The easiest way to start off is to evaluate those arithmetic operations:

$\frac{3-8}{3-4}= \frac{-5}{-1}=\frac{5}{1}=5$

And all 4 of these are valid expressions equuivalent to the original.

You might be interested in

Samantha bought 26 total fish. Each goldfish cost $3 and each guppy costs $4. She spent $86 total. How many guppies did she buy?

Alex787 [66]

Answer:

goldfish is 15 and guppies is 11

Step-by-step explanation:

Given data

let the number of goldfish be x

and the number of guppies be y

x+y= 25----------1

and

3x+4y= 86-------2

solve 1 and 2

x+y= 25

3x+4y= 86

from 1

x= 25-y

put this in 2

3(25-y)+4y= 86

75-3y+4y= 86

75+y= 86

y= 86-75

y=11

put y= 11 in 1

x+11= 26

x= 26-11

x= 15

Hence goldfish is 15 and guppies is 11

5 0

3 years ago

Y-2=4(x-1) use the point slope for each equation

melomori [17]

Slope = 4

Point = (1, 2)

<h2>Explanation:</h2>

Remember you need to post complete questions in order to get precise and good answers. However, I'll assume you need the point and slope of the following line:

$y-2=4(x-1)$

A line written in Point-Slope form is given by:

$y-y_{0}=m(x-x_{0}) \\ \\ \\ Where: \\ \\ Slope:m=4 \\ \\ Point:(x_{0},y_{0})=(1,2)$

By using tools, we get the graph in the figure below. As you can see, this line passes through (1, 2) and has a slope:

$m=\frac{4}{1}=4$

<h2>Learn more:</h2>

Infinitely many solutions: brainly.com/question/13771057#

#LearnWithBrainly

4 0

3 years ago

If one number is five more than another number, and the smaller number is half of the larger number, what are the two numbers?

Ymorist [56]

Answer:

<h2>Larger number = 10</h2><h2>Smaller number = 5</h2>

Step-by-step explanation:

Let larger number be x

Let smaller number be y

$x = 5 + y$ ---> equation (i)

$y = \frac{1}{2} x$

$x = 2y$ -----> equation (ii)

Equate equation (i) and (ii),

$5 + y = 2y$

Move variable to L.H.S and change its sign:

Similarly, Move constant to R.H.S and change its sign

$y - 2y = - 5$

$- y = - 5$

The difference sign (-) will be cancelled on both sides

$y = 5$

Putting the value of y in equation (ii) in order to find the value of X ( larger number)

$x = 2y$

Plug the value of y

$= 2 \times 5$

Calculate the product

$= 10$

Hence,

Smaller number = 5

Larger number = 10

Hope this helps..

Best regards!!

8 0

3 years ago

Read 2 more answers

Two cardboard boxes are stacked on top of each other. The top box is a cube with sides of 10 in. The bottom box is a rectangular

babymother [125]

The surface area of the composite shape is 1560 square inches

<u>Step-by-step explanation:</u>

The surface area of the top cardboard is,

SA = 5 x area of each side

Because one side is attached with another cardboard box . So while finding the area only 5 sides are calculated.

SA = 5 ( 10 x 10)

= 500 square inches

The surface area of the rectangular prism cardboard,

Given that,

l = 20 in

w =15 in

h = 8 in

A = 2(lw + wh + hl) - 100

We are subtracting 100 because it is the area of one side of the square cardboard box on top of the rectangular prism box .

A = 2(300 + 120 + 160) - 100

= 2(580) - 100

= 1160-100

= 1060 square inches

Total surface area = SA + A

= 500 + 1060

= 1560 square inches

8 0

4 years ago

Read 2 more answers

Provide a counterexample:

Jobisdone [24]

Answer:

$a=2 \quad \text{and} \quad b=-2$

Step-by-step explanation:

Take $a=2 \quad \text{and} \quad b=-2$ , note that

$2=(-1)\cdot(-2)$

hence b divides a. On the other hand, we have that

$-2=(-1)\cdot2$

which tells us that a divides b. Moreover, $a=2 \neq -2=b$ .

5 0

3 years ago