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Elanso [62]
3 years ago
12

NEED HELP ASAP If f(x) = -9x -1 find the dependent variable if the independent value is 2

Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
3 0

Answer:

-19

Step-by-step explanation:

plug in 2 for x.

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ABCD is a parallelogram; find the area of the shaded region.
Korolek [52]

Answer:

  B.  60 ft²

Step-by-step explanation:

The overall area of the parallelogram is the product of its base length (15 ft) and height (8 ft), so is ...

  overall area = (15 ft)(8 ft) = 120 ft²

The area of the quadrilateral in the middle of the parallelogram is the area of two triangles, each with a base equal to 15 ft (the horizontal line in the diagram), and heights that total 8 ft. If we let x represent the height of one of those triangles, then the other has a height of (8-x) and the sum of their areas is ...

  quadrilateral area = (1/2)(15 ft)(x) +(1/2)(15 ft)(8 ft -x)

  = (1/2)(15 ft)(x + 8 ft - x) = (1/2)(15 ft)(8 ft) = 60 ft²

Then the shaded area is the difference between the parallelogram area and the quadrilateral area:

  shaded area = parallelogram area - quadrilateral area

  = (120 ft²) - (60 ft²)

  = 60 ft²

The area of the shaded region is 60 ft².

8 0
3 years ago
A student answered 86 problems on a test correctly and receives a grade at 98% how many problems were only test if all the probl
love history [14]

Answer:

88 questions

Step-by-step explanation:

86/0.98 = 87.755

pls mark brainliest :D

5 0
3 years ago
Suppose a researcher wants to make sure that the probability of committing a Type I error is less than 5%. How can the researche
d1i1m1o1n [39]

Answer:

B. Set the alpha level at 0.05.

Step-by-step explanation:

Hypothesis testing is a procedure whereby a researcher determines if the null hypothesis is rejected or accepted, depending on the significant level or the alpha level. When a type I error is made, the null hypothesis is rejected even though it is correct. To solve this problem, the significant or alpha level is set to 5% or 0.05.

5 0
3 years ago
Find the angle marked with the ? mark
Yuri [45]

Answer:

53 degrees

Step-by-step explanation:

Angle N = angle E

because angle made by joining end points of same chord on circumference are always equal.

so angle E = 37

Angle D = 90 ( because angle made by diameter on circumference is 90 degrees)

Now in Triangle DEC. Sum if all the angles of triangle us 180

Angle D + angle E + ? = 180

37 + 90 + ? = 180

127 + ? = 180

? = 180 - 127

? = 53 degrees

4 0
3 years ago
The population of a colony of mosquitoes obeys the law of uninhibited growth. if there are 1000 mosquitoes initially and there a
inna [77]
<span>6554 Assuming that the growth the function will be of the form f(n) = P*R^n where P = Initial population R = Growth rate per period n = number of periods In this problem, the only period or interval I see are days. So we'll use n to represent the number of days since the start. The initial population is 1000, and the ratio would be 1600/1000 = 1.6. So the formula becomes f(n) = 1000*1.6^n So let's evaluate that function using n=4. f(n) = 1000*1.6^n f(4) = 1000*1.6^4 f(4) = 1000*6.5536 f(4) = 6553.6 Since we can't have a fractional mosquito, round to the nearest integer, giving 6554.</span>
7 0
3 years ago
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