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ipn [44]
3 years ago
14

Question 3(Multiple Choice Worth 4 points) (08.06) An unknown number y is 10 more than an unknown number x. The number y is also

x less than 3. The equations to find x and y are shown below. y = x + 10 y = −x + 3 Which of the following statements is a correct step to find x and y?
Add the equation to eliminate x.
Multiply the equations to eliminate y.
Write the points where the graphs of the equations intersect the x-axis.
Write the points where the graphs of the equation intersect the y-axis.
Mathematics
2 answers:
siniylev [52]3 years ago
7 0

Answer:

Add the equations to eliminate x

Step-by-step explanation:

Let's go through each of these statements

1) Add the equations to eliminate x

   y = x + 10

+

   y = -x + 3

   _______

  2y = 13

This works!

nlexa [21]3 years ago
5 0

Answer:

Add the equation to eliminate x.

Step-by-step explanation:

Add the equation to eliminate x.

Let's actually do the work!  

y = x + 10

y = −x + 3

------------------

2y = 13, so y = 6.5.

Subbing 6.5 for y in either of the equations above lets us calculate y.  For example, in the second equation, 6.5 = -x + 3, or 3.5 = -x, or x = -3.5.

The solution is (-3.5, 6.5).

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5 0
4 years ago
Which equation can be simplified to find the inverse of y = 5x2 + 10?
iris [78.8K]

ANSWER

x = 5 {y}^{2}  + 10

EXPLANATION

The given equation is :

y = 5 {x}^{2}  + 10

To find the inverse of this function, we interchange x and y to obtain:

x= 5 {y}^{2}  + 10

We simplify this function to solve for y.

Therefore the equation that needs to be simplified to find the inverse of the given function is

x = 5 {y}^{2}  + 10

The correct choice is is the first option.

8 0
3 years ago
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a red die is tossed then a green die is tossed. what is the probability that the red die shows a number larger than three and th
aleksandrvk [35]
|\Omega|=6\cdot6=36\\
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4 years ago
Which set of numbers is an example of an arithmetic sequence
seropon [69]

Step-by-step explanation:

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7 0
4 years ago
30pts for whoever answers this!!!
Marizza181 [45]

Let the weights of the cashews and peanuts be c and p respectively.  Then:

c + p = 10 lb.

The related cost equation is 5.80c + 2.20p = 3.64(c+p).

Because c + p = 10 lb,  the previous equation is equivalent to:

5.80c + 2.20p = 3.64(10)  =  36.40

Solving c + p for c, we get c = 10 - p.  Then, the last equation becomes:

5.80(10-p) + 2.20p = 36.40, or 58 - 5.8p = 36.4.  Solving for p:  

-5.8p = 36.4 - 58, or    -5.8p = -21.6.  Finally, p = 3.72 lb.

Since c + p = 10 (lb), c = 10-3.72 (lb), or   c = 6.28 lb.

He must make this 10-lb mixture as follows:  6.28 lb of cashews and 3.72 lb of peanuts.

8 0
4 years ago
Read 2 more answers
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