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MatroZZZ [7]
2 years ago
7

2. Which of the following is frue about the solution to the system of equations below? 2x + 4y = 9 2x + 4y = -9 A. The system ha

s no solution. B. The system has infinitely many solutions. The system has one solution. D. None of the above.​
Mathematics
1 answer:
Lubov Fominskaja [6]2 years ago
3 0

Answer:

Step-by-step explanation:

B. The system has infinitely many solutions. The system has one solution.

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it takes 18 3/8 inches of wood to make a frame for a small picture if Ms Jones has 108 inches of wood how many frames can she ma
scZoUnD [109]
It would make 5 complete frames, and about 8/10 of another frame.
108 / 18.375 = 5.8&*)&^&%*$*
I used a calculator.
You could keep adding 18 and 3/8 over and over again until you get right under 108 if you're good at math like me, but most people would have to add 18 and 3/8 separately.

Thanks, and if you liked my answer, please consider giving me the brainliest answer, because I need 5 of them to get to the next level.
6 0
3 years ago
Read 2 more answers
What is the equation of the midline for the function f(x) ?<br> f(x)=3cos(x)−2.5
fredd [130]
Y= -2.5
the midline is basically the line where the distance is the same to the line from the max and the min 
7 0
3 years ago
Read 2 more answers
Write an equation of the line that passes through (1,2) and is parallel to the line y = -5x+4
ArbitrLikvidat [17]

Answer:

y =-5x + 7

Step-by-step explanation:

y = -5x + 4

Slope = -5

Parallel lines have same slope

Slope of the parallel line to this line = -5

(1 , 2)

y -y1 =m(x - x1)

y - 2 = -5(x - 1)

y -2 = -5x + 5

   y = -5x + 5 + 2

  y = -5x + 7

8 0
3 years ago
A random sample of 45 door-to-door salespersons were asked how long on average they were able to talk to the potential customer.
dimulka [17.4K]

Answer:

b.  =8.5+1.96*3/SQRT(45), and =8.5-1.96*3/SQRT(45)

Step-by-step explanation:

Sample size (n) = 45

Sample mean (M) = 8.5 minutes

Variance (V) = 9 minutes

Z-score for a 95% confidence interval (z) = 1.96

A confidence interval is defined by the following expression:

M\pm z\sqrt{\frac{V}{n} }

Applying the given data:

8.5\pm 1.96\sqrt{\frac{9}{45} }\\8.5\pm 1.96\frac{3}{\sqrt 45}

Writing in Excel statements, the limits of the interval would be

=8.5+1.96*3/SQRT(45), and =8.5-1.96*3/SQRT(45)

Therefore, the answer is alternative b.

8 0
3 years ago
Here’s a graph of a linear function. Write the equation that describes that function. Express it in slope intercept form.
worty [1.4K]
<h3>Answer:   y = (1/2)x+3</h3>

slope = 1/2,  y intercept = 3

==============================================================

Work Shown:

Pick any two points you want on the line.

I'll pick the two points (0,3) which is the y intercept and also the point (2,4).

------

Find the slope of the line through (x1,y1) = (0,3) and (x2,y2) = (2,4)

m = (y2 - y1)/(x2 - x1)

m = (4 - 3)/(2 - 0)

m = 1/2 is the slope

slope = rise/run = 1/2

rise/run = 1/2 means rise = 1 and run = 2.

This means we go up 1 unit each time we move to the right 2 units.

-----

Since the slope is m = 1/2 and the y intercept is b = 3, we can say

y = mx+b

y = (1/2)x+3

this is the same as y = 0.5x+3 since 1/2 = 0.5

4 0
3 years ago
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