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Strike441 [17]
3 years ago
5

How to check if a binomial is a difference of squares ?

Mathematics
1 answer:
tiny-mole [99]3 years ago
4 0
This I my explanation for this question if it is helpful your welcome

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Treena flew home to visit her family for
devlian [24]

x + y = 71.5

x = 47.8

y = 71.5 - 47.8

71.5 - 47.8 = 23.7

y = 23.7 pounds

7 0
2 years ago
Austin takes 4 hours to make 2 backpacks and a handbag. The time he takes to
lys-0071 [83]

Step-by-step explanation

b = 2h      is given

2 b   + h  = 4 hours     is  given      sub in the top equation

2 (2h) + h = 4

5h = 4

h = 4/5 hr    or  48 minutes

7 0
2 years ago
Using the slope formula, find the slope of the line through the given points.
BabaBlast [244]

Answer:

-2

Step-by-step explanation:

Slope = (4-8) / (9-7) = -4/2 = -2

5 0
2 years ago
Which one is it? for a grade & due today!! help me please
Mama L [17]

Answer:the last one

Step-by-step explanation:

Divide 12 by 10.4

Hope this helps you

It might come bigger out as a decimal 1.5

6 0
3 years ago
Read 2 more answers
A riverboat travels 54 km downstream in 2 hours. It travels 57 km upstream in 3 hours. Find the speed of the boat and the speed
irakobra [83]

Here we must write and solve a system of equations to find the speed of the boat and the speed of the stream. We will find that the boat's speed is 23km/h and the river's speed is 4km/h.

First, remember the relation:

Distance = Speed*Time.

Now let's define the variables we will be using:

  • B = boat's speed
  • R = river's speed.

When the boat travels downstream, the total speed of the boat is the speed of the boat plus the speed of the river, and we know that in that case it travels 54km in 2 hours, then:

54km = (B + R)*2h

When the boat travels upstream, we must subtract the speed of the river. In that case, we know that the boat travels 57km in 3 hours, then we have:

57km = (B - R)*3h

Then our system of equations is:

54km = (B + R)*2h

57km = (B - R)*3h

To solve this, first, we need to isolate one of the variables in one of the equations, let's isolate B in the second one:

57km = (B - R)*3h

57km/3h + R = B

19 km/h + R = B

Now we can replace that in the other equation:

54km = (B + R)*2h

54km/2h = B + R

27 km/h = B + R = (19 km/h + R) + R

Now we can solve this for R:

27 km/h = 19km/h + 2*R

27 km/h - 19km/h = 2*R

8 km/h = 2*R

(8km/h)/2 = 4km/h = R

Now that we know the value of R, we can use:

B = 19 km/h + R  = 19 km/h + 4km/h = 23 km/h

So the boat's speed is 23km/h and the river's speed is 4km/h.

If you want to learn more, you can read:

brainly.com/question/12895249

5 0
2 years ago
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