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Lana71 [14]
3 years ago
6

Two boys who live 14 miles apart start at noon to walk toward each other at rates of 3 mph and 4 mph respectively. In how many h

ours will they meet?
Mathematics
2 answers:
crimeas [40]3 years ago
8 0
They will meet each other in approximately 2 hours
Arisa [49]3 years ago
6 0

They will meet in 2 hrs!

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Select the graph of the solution. click until the correct graph appears. 2x - 1 > 5
Usimov [2.4K]

Answer:

Our answer would be x > 3

I have attached a picture of the graph below.

5 0
2 years ago
Need help on this question i dont get it ima be posting some more but i need help on this on first
Anuta_ua [19.1K]

Answer:

The answer is B.

Step-by-step explanation:

Its B because in the problem it says $12 per yard which means it would be 12y. The 40 Rupesh already had so just add it and it would be 12y+ 40. The key word "At least" results into the sign being greater than or equal to. So the final answer would be 12y+40\geq 148.

8 0
3 years ago
How many times does the graph of 4x = 32 - x2 cross the x-axis?
garik1379 [7]

Answer:

The graph crosses the x-axis 2 times

The solutions are  x = -8  &  x = 4

Step-by-step explanation:

Qaudratics are in the form ax^2 + bx+ c

Where a, b, c are constants

Now, let's arrange this equation in this form:

4x=32-x^2\\x^2+4x-32=0

Where

a = 1

b = 4

c = -32

We need to know the discriminant to know nature of roots. The discriminant is:

D=b^2-4ac

If

  • D = 0 , we have 2 similar root and there is 2 solutions and that touches the x-axis
  • D > 0,  we have 2 distinct roots/solutions and both cut the x-axis
  • D < 0,  we have imaginary roots and it never cuts the x-axis

Let's find value of Discriminant:

D=b^2-4ac\\D=(4)^2 -4(1)(-32)\\D=144

Certainly D > 0, so there are 2 distinct roots and cuts the x-axis twice.

We get the roots/solutions by factoring:

x^2+4x-32=0\\(x+8)(x-4)=0\\x=4,-8

Thus,

The graph crosses the x-axis 2 times

The solutions are  x = -8  &  x = 4

6 0
3 years ago
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Combine like terms. 8x-x
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[tex]8x - x \\ 8 (0)


hope this help
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4 0
3 years ago
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Solve the equation for all values of x by completing the square.<br> x2 + 21 = 10x
sashaice [31]

Answer:

oookkk

Step-by-step explanation:

oofookkjjjnnn

ooo6

3 0
3 years ago
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