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3 years ago

PLS HELP!! 30 points!

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

3 0

Answer:

² is the answer i think

Step-by-step explanation:

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Which of the following points lie in the solution set to the following system of inequalities? (1 point)

swat32

Answer:

the answer is

The point (1, −5) lie in the solution set

5 0

3 years ago

The water level of a pond rises an inch every 16 days

Scilla [17]

Answer:

16 weeks

Step-by-step explanation:

7 inches rise

7x16days = 112 days

112 days / 7 days = 16 weeks

5 0

4 years ago

PLEASE HELP DUE IN AN HOUR NO LINKS PLEASE.

Korolek [52]

Answer:

y = 3/2 when x = 15

Step-by-step explanation:

y = k / √1+x

2 = k / √1+8 = k/3

k = 6

y' = 6 / √1+15 = 6/4 = 3/2

5 0

3 years ago

John stands 150 meters from a water tower and sights the top at an angle of elevation of 36º. If John's eyes are 2 meters above

horsena [70]

Answer:

The height of tower $DB=111\ meters$ .

Step-by-step explanation:

Diagram of the given scenario is shown below.

Given that,

Distance between John and tower is $CE=150 \ meters$ .

Angle of elevation to the top of the tower is $\angle DEC=36$ °.

Height of John is $CB=2\ meters$ .

To Find: Height of the tower $DB$ .

So,

In triangle ΔDCE,

$Tan$ (∠ $DEC)= \frac{DC}{CE}$

$Tan (36)= \frac{DC}{150}$

$DC= tan(36)\times 150$

$DC=108.98\ meters$

Now,

To calculate the height of tower we have

$DB=DC+CB$

$DB=108.98+2$

$DB=110.98\ meters$ ≈ $111 \ meters$

Therefore,

The height of tower $DB=111\ meters$ .

6 0

3 years ago

How do you know it is positive or negative in exponents.

hammer [34]

When using exponents there will be a negative sign before the exponent. If the exponent is positive it will not have any sign it will just be the number

8 0

2 years ago