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Gre4nikov [31]
3 years ago
10

The results of a survey show that 102 students, or 85% of the students, in a survey choose a water park as their favorite summer

activity. How many students were in the survey?
Mathematics
1 answer:
jonny [76]3 years ago
4 0
To answer this, you first need to find 1%. You do this by dividing 102 by 85, which is 1.2. If 1.2 is 1%, then 1.2 × 100 is 100%. 1.2 × 100 = 129, which is your answer. I hope this helps!
You might be interested in
Answer 3(x-4)=2(-2x+1). Explain
Lelu [443]

Answer:

65

Step-by-step explanation:

6 0
3 years ago
The total stopping distance T for a vehicle is T = 2.5x + 0.5x 2 , where T is in feet and x is the speed in miles per hour. Appr
Kobotan [32]

Answer:

%  change in stopping distance = 7.34 %

Step-by-step explanation:

The stooping distance is given by

T = 2.5 x + 0.5 x^{2}

We will approximate this distance  using the relation

f (x + dx) = f (x)+ f' (x)dx

dx = 26 - 25 = 1

T' =  2.5 + x

Therefore

f(x)+f'(x)dx = 2.5x+ 0.5x^{2} + 2.5 +x

This is the stopping distance at x = 25

Put x = 25 in above equation

2.5 × (25) + 0.5× 25^{2} + 2.5 + 25 = 402.5 ft

Stopping distance at x = 25

T(25) = 2.5 × (25) + 0.5 × 25^{2}

T(25) = 375 ft

Therefore approximate change in stopping distance = 402.5 - 375 = 27.5 ft

%  change in stopping distance = \frac{27.5}{375} × 100

%  change in stopping distance = 7.34 %

6 0
3 years ago
A river discharges 4 × 106 cubic feet of water into the Pacific Ocean each second. There are 86,400 seconds in one day. To find
erik [133]

Answer:

3.456E + 14= 3.456X10^{14

Step-by-step explanation:

The river discharges 4X10^6 cubic feet of water into the Pacific Ocean each second.

There are 86,400 seconds in one day.

Amount of water discharges each day

=4X10^6X86400\\=345600000000\\=3.456X10^{11

Since this differs from what you have, I will explain the scientific notation.

3.456E + 14 simply means 3.456X10^{14

The options are not well laid out but you can pick the appropriate option.

8 0
4 years ago
Can someone help me with this please?
AVprozaik [17]

Answer:

y=70°

z= 60°

w= 70°

Step-by-step explanation:

Since the two triangles are similar, we know that all of the corresponding angles must be the same.  On the triangle on the left, we can see that the angle formed between sides AB and AC is 60°.  This means that the same angle is formed at Z, which is in the same location on the triangle to the right.  From there, we can find the missing angle, W, from the difference of 180°.

180°-50°-60°=70°.

The same way we found Z, we can also find Y, since it has to be the same as W.

8 0
3 years ago
2 _<br> 3 --- + 2.3=<br> 3<br><br><br> giving 25 points for the right answer asap
meriva

3 \frac{2}{3}  + 2.3 \\\implies 3 \frac{2}{3} + \frac{23}{10} \\\implies \frac{11}{3} + \frac{23}{10} \\\implies \frac{110+69}{30} \implies \frac{179}{30}

8 0
3 years ago
Read 2 more answers
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