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Anarel [89]
3 years ago
9

Joe's final exam has true/false questions, worth 2 points each, and multiple choice questions, worth 5 points each. Let x be the

number of true/false
he gets correct, and let y be the number of multiple choice questions he gets correct.
He needs more than 90 points on the exam to get an A in the class. Using the values and variables given, write an inequality describing this.
Mathematics
1 answer:
mixer [17]3 years ago
7 0

This is the inequality

2x + 5y ≥ 90

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Find the greatest possible value for a+b+c+d if b is a positive integer and a,b,c,d satisfy the system of equations
snow_lady [41]

Answer:

a+b+c+d = -5\cdot b

Step-by-step explanation:

The given system of equations is now reduced:

1) a+b = c, b+c = d, c+d=a, b > 0 Given

2) a = c+d By 1)

3) (c+d)+b=c 2) in 1)

4) d = b + c By 1)

5) [c+(b+c)]+b = c 4) in 3)

6) 2\cdot b + 2\cdot c = c Algebra

7) c = -2\cdot b Algebra

8) d = -b 7) in 4)/Algebra

9) a = -3\cdot b 7) and 8) in 2)/Algebra

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4 0
3 years ago
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25 points, please help!!! Find the indicated limit, if it exists. (see picture for limit)
Semmy [17]

Answer:

yes it exists.and answer is 5.

8 0
3 years ago
An employee in a shoe repair store must schedule his day so that he can complete all of his work. To do that, he must know how l
sdas [7]

It takes him 17 minutes to make each shoe.

<em>How to Solve: </em>

  1. take away the 30 min lunch break from the time becomes 11:45 to 4:00
  2. calculate the distance from 11:45 to 4:00 which is 4 hours and 15 minutes to complete each shoe.
  3. Convert the hours into 60 minutes each so 60*4= 240 now add the extra minutes 240+15= 255 minutes
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6 0
3 years ago
Segments AB, DC and Ec intersect at point C. Angel DCE measures 148. Find the value of x.
Anna71 [15]

The image is attached.

Answer:

x = 16°

Step-by-step explanation:

Segment AB, segment DC and segment EC all intersect at point C.

Here, we are told angle DCE measures 148°.

This is a semi-circle, and the total angle of a semi-circle is 180°.

Which means, x+x+148 = 180

Solving for x, we have:

x+x+148 = 180

2x + 148 = 180

2x = 180 - 148

2x = 32

x = \frac{32}{2}

x = 16°

The value of x is 16°

6 0
3 years ago
Find an equation of the line described (3,7) (0,0)
Colt1911 [192]
The formula of the line is
y=mx + b
The likes goes through the point (0,0)
that means that y-int = 0, b=0
y=mx
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m= \frac{y_{2}-y_{1}}{x_{2}-x_{1}} =  \frac{7-0}{3-0} = \frac{7}{3} &#10;&#10;

So, y= \frac{7}{3} x



3 0
3 years ago
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