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frosja888 [35]
3 years ago
11

In a recent survey, people were asked if they had a digital camera at

Mathematics
2 answers:
Komok [63]3 years ago
8 0

Answer:

20 ppl

Step-by-step explanation:

Veronika [31]3 years ago
5 0

Answer:

20 people

Step-by-step explanation:

if 6 ppl 30%

then the 100% equals to

6 × 100% ÷ 30% = 20 ppl

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At midnight, the outside temperature was -12.3 degrees. By 6:00 AM the outside tempature had dropped 6.8 degrees.
choli [55]
It was -19.1 degrees
7 0
3 years ago
Solve the inequality and express your answer in interval notation<br> x^2+8x+5 &lt;0
irakobra [83]

The interval notation is (-\sqrt{11}-4, \sqrt{11}-4)

Explanation:

The inequality is x^{2}+8 x+5

Let us complete the square, we get,

x^{2}+8 x+5+4^{2}-4^{2}

Simplifying, we have,

(x+4)^{2}+5-4^{2}

(x+4)^{2}-11

Adding both sides of the equation by 11, we get,

(x+4)^{2}

Since, we know that for u^{n} , if n is even then -\sqrt[n]{a}

Thus, writing the above expression in this form, we get,

-\sqrt{11}

Also, if a then a and u

Then ,we have,

-\sqrt{11} and x+4

Solving the inequalities, we get,

-\sqrt{11}\ \ \ \ \ \  and  x+4

Merging the intervals, we have,

-\sqrt{11}-4

Hence, writing the solution in interval notation, we have,

(-\sqrt{11}-4, \sqrt{11}-4)

Therefore, the answer is (-\sqrt{11}-4, \sqrt{11}-4)

7 0
3 years ago
An elevator ascends,or goes up,at a rate of 750 feet per minute.is the height to which the elevator ascend proportional to the n
Sliva [168]
C=480
solve

480=24n+35
minus 35 both sides
445=24n
divide both sides by 24
18.541666666666666666666666666667=n

<span>so about 18 cakes</span>
7 0
3 years ago
Pedro prepared 16 kilograms of dough after working 2 hours. How much dough did Pedro prepare if he worked for 9 hours?​
koban [17]

Answer:

72 kilo

Step-by-step explanation:

6 0
3 years ago
Triangle ABC has the following characteristics. Angle A is right angle. AB=8. AC= 15. Find BC
Novay_Z [31]
Answer is c
use pythagorean
a^2 + b^2 = c^2

8^2+15^2= c^2
289=c^2

sqrt both sides

c=17

BC=17
8 0
2 years ago
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