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3 years ago

Help me please, it’s regular science for 5th grade.

Mathematics

2 answers:

Wewaii [24]3 years ago

8 0

I’m pretty sure it is Y because when the laser touches water the laser from that point will change its direction.

ycow [4]3 years ago

6 0

Answer:

C. Point Y

Step-by-step explanation:

The answer is point Y because when the light hits the water, it bends the light.

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Solve for x

Liula [17]

Answer:

x = {-4, 4}

Step-by-step explanation:

Subtracting 3 gives ...

5x^2 = 80

Dividing by 5, we get ...

x^2 = 16

Taking the square root gives the solutions ...

x = ±4

The smaller value of x is -4; the larger value is 4.

4 0

3 years ago

Read 2 more answers

Convert from Decimal Notation to Scientific Notation

oee [108]

Answer:

Hence, 3,40,000 can be expressed as $3.4\times10^5$

Step-by-step explanation:

Step 1 of 1

Consider 3,40,000

3.4

So, 3.4 lies between 1 & 10

Now, Decimal has moved 5 places to left.

$3.4=10^{5}$

So, 3,40,000= $3.4 \times 10^{5}$$

3 0

2 years ago

I need to know the solution to this

Alex73 [517]

There are two ways to do this but the way I prefer is to make one of the equations in terms of one variable and then 'plug this in' to the second equation. I will demonstrate

Look at equation 1, $-2x+y=10$ this can quite easily be manipulated to show $y=10+2x$ .

Then because there is a y in the second equation (and both equations are simultaneous) we can 'plug in' our new equation where y is in the second one $4x-y=-14 \Rightarrow 4x-(10+2x)=-14$ which can then be solved for x since there is only one variable $4x-10-2x=-14 \Rightarrow 2x=-4 \Rightarrow x=-2$ and then with our x solution we can work out our y solution by using the equation we manipulated $y=10+2x = 10+(2 \times -2) = 10-4=6$ .

So the solution to these equations is x=-2 when y=6

8 0

3 years ago

Can 8 go into 3? plz answer

Sergio [31]

Answer:no

Step-by-step explanation:it would not be possible as 8 is a larger number then 3 unless u would be multiplying by decimals which in which case might be possible

8 0

3 years ago

Of the 27 players trying out for the school basketball team, 8 are more than 6 feet tall and 7 have good aim. What is the probab

Komok [63]

Of the 27 players trying out for the school basketball team, 8 are more than 6 feet tall and 7 have good aim. What is the probability that the coach would randomly pick a player over 6 feet tall or a player with a good aim? Assume that no players over 6 feet tall have good aim. A. 7/15 B. 6/15 C. 7/9 D. 5/9

The Answer Is

--------5/9--------

5 0

4 years ago