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earnstyle [38]
3 years ago
13

Serena bought a total of 135 notebooks and pencils for her students. Each notebook cost $1.75, and each pencil cost $0.35. The t

otal cost of her purchase was $122.85. How many pencils did Serena buy?
Mathematics
1 answer:
notsponge [240]3 years ago
8 0

Answer:

81 pencils is the answer

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Someone help me with this please!! if it’s correct ill mark you as brainliest
ella [17]

Answer:

P(has 32 GB) = .382

Step-by-step explanation:

There are 75 + 95 + 42 + 63 = 275 total tablets

There are 42 + 63 = 105 tablets of 32 GB

P(has 32 GB) = 105/275 = .382

8 0
3 years ago
State whether the function is bounded above, bounded below, or bounded.<br> y = 2x
kotykmax [81]
Note: Type "2^x" without quotes to indicate 2^x

When you graph this function, you'll see that we have the exponential curve sloping upward as x increases. The function increases upward without bound. In other words, it goes on forever upward. There are no restrictions on the "ceiling" so to speak of this function curve.

There is a floor though. The floor in this case is like an electric fence that the function never touches. It only gets closer. This is known as the "horizontal asymptote". In this case, the horizontal asymptote is the line y = 0 which lays perfectly over the x axis.

So because of this "fence", the function is bounded below. It does not go forever in the negative y direction.

Final Answer: Choice B) Bounded below
3 0
3 years ago
15 POINTS WILL MARK BRAINLIEST!!!!! Choose the group responsible for the Declaration of Independence.
Bess [88]

Answer: second Congress

Step-by-step explanation:

Short and sweet

6 0
3 years ago
What is the y-intercept of the graph that is shown below? On a coordinate plane, a line goes through points (0, 2) and (3, 0). (
MrRa [10]

Answer:-2/3

Step-by-step explanation:the problem is asking for the slope of (0,2) and(3,0). The formula for this problem is y2-y1 over x2-x1. And if your writing this formula down write it like a fraction with y on top and x on bottom. (x,y) (x2,y2). You take the 0 from the second set and the 2 from the first set and subtract them to get -2. Then you take the 3 from the sea d set and the 0 from the first set and you subtract them to get 3. That’s how you get the answer of -2/3.

3 0
3 years ago
Read 2 more answers
Step 3a: Calculating the average rate
Alex73 [517]

9514 1404 393

Answer:

  a) average rate = (total distance)/(total time)

  b) Rave = 2·R1·R2/(R1 +R2)

  c) cheetah's average rate ≈ 50.91 mph

Step-by-step explanation:

a) Let AB represent the distance from A to B. Let t1 and t2 represent the travel times (in hours) on leg1 and leg2 of the trip, respectively. Then the distances traveled are...

  First leg distance: AB = 70·t1   ⇒   t1 = AB/70

  Second leg distance: AB = 40·t2   ⇒   t2 = AB/40

The average rate is the ratio of total distance to total time:

  average rate = (AB +AB)/(t1 +t2)

  average rate = 2AB/(AB/70 +AB/40) = 2/(1/70 +1/40) = 2(40)(70)/(70+40)

  average rate = 560/11 = 50 10/11 . . . mph

__

No equations are given, so we cannot compare what we wrote with the given equations. In each step of the solution, we have used the rules of algebra and equality.

b) For two rates over the same distance (as above), the average is their harmonic mean:

  average rate = 2r1·r2/(r1+r2)

__

c) The cheetah's average rate was 50 10/11 mph ≈ 50.91 mph.

4 0
3 years ago
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