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Elina [12.6K]
3 years ago
10

A student gets 17 out of 20 questions correct on a test. What percent of questions did student get correct?

Mathematics
2 answers:
Sindrei [870]3 years ago
7 0

Answer:

85%

Step-by-step explanation:

100 divided by 20 is 5.

5 x 17 = 85

          = 85%

Anna007 [38]3 years ago
6 0

Answer:85%

Step-by-step explanation convert 17 out of 20. 17 out of 20 becomes the fraction 17/20

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Solve the system, or show that it has no solution. (If there is no solution, enter NO SOLUTION. If there are an infinite number
liberstina [14]

Answer:

The system has an infinite set of solutions (x,y) = (x, \frac{x-5}{4})

Step-by-step explanation:

From the first equation:

20x - 80y = 100

20x = 100 + 80y

x = \frac{100 + 80y}{20}

x = 5 + 4y

Replacing on the second equation:

-14x + 56y = -70

-14(5 + 4y) + 56y = -70

-70 - 56y + 56y = -70

0 = 0

This means that the system has an infinite number of solutions, considering:

x = 5 + 4y

4y = x - 5

y = \frac{x - 5}{4}

The system has an infinite set of solutions (x,y) = (x, \frac{x-5}{4})

8 0
3 years ago
Helppp! idk why its needs to be 20 charactes so i wrote this
marin [14]
This should be 1.35, sorry if it’s wrong
6 0
3 years ago
Read 2 more answers
Find the equation of the tangent line and normal line to the curve y=(6+4x)2 at the point (6,900). Write the equations of the li
Ksenya-84 [330]

Answer:

Equation of the tangent to the curve

y = 240x - 215994

Equation of the normal

y = (-1/240)x + 9.75 = - 0.00417x + 9.75

Step-by-step explanation:

y = (6 + 4x)² = 36 + 48x + 16x² = 16x² + 48x + 36

dy/dx = 32x + 48

At the point (6,900),

dy/dx = 32(6) + 48 = 240

Equation of the tangent at point (a,b) is

(y - b) = m(x - a)

a = 6, b = 900, m = 240

y - 6 = 240(x - 900)

In the y = mx + b form,

y - 6 = 240x - 216000

y = 240x - 215994

The slope of the normal line = -(1/slope of the tangent line) (since they're both perpenducular to each other)

Slope of the normal line = -1/240

Equation of normal

y - 6 = (-1/240)(x - 900)

y - 6 = (-x/240) + 3.75

y = (-1/240)x + 9.75

y = - 0.00417x + 9.75

8 0
3 years ago
There are 100 sophomores at the school. 85% of them are good students. What would be the percent of good students at school if (
klemol [59]

Answer:

77%

Step-by-step explanation:

7 0
3 years ago
List three ways in which random numbers may be generated for use in a simulation.
balu736 [363]
Random numbers for a simulation might come from
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2) a computer random number generator, such as ones available in many spreadsheet programs

3) digitizing the noise of the Universe. Such random numbers are available on some web sites.
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