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3 years ago

Question 1 8x + y = 2020: Solve for y.

Mathematics

2 answers:

Katarina [22]3 years ago

8 0

Answer:

y = -8x+2020

Step-by-step explanation:

8x + y = 2020

Subtract 8x from each side

8x-8x + y = -8x+ 2020

y = -8x+2020

neonofarm [45]3 years ago

5 0

Answer:

y = 2020 - 8 x

Step-by-step explanation:

Solve for y:

y + 8 x = 2020

Hint: | Solve for y.

Subtract 8 x from both sides:

Answer: y = 2020 - 8 x

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A man who moves to a new city sees that there are two routes he could take to work. A neighbor who has lived there a long time t

sergiy2304 [10]

Answer:

0.3 to 2.3 min

Step-by-step explanation:

n1=n2=10

x1=48

x2=49

s1=4

s2=1

Determine the deegres of freedom.

$\delta=\frac{(\frac{s_1^2}{n_1}+\frac{s_2^2}{n_2})^2}{\frac{(\frac{s_1^2}{n1})^2}{n_1-1}+\frac{(\frac{s_1^2}{n1})^2}{n_2-1}}=10.14$

t=2.037 (student's appendix)

$E=t\sgrt(\frac{s_1^2}{n_1}+\frac{s^2_2}{n_2})=1.3$

$(x_1-x_2)-E=(48-49)-1.3=-2.3$

$(x_1-x_2)+E=(48-49)+1.3=0.3$

We are 95% confident that average commuting time for rute A is between 0.3 and 2.3 min shorter than for rute B.

5 0

3 years ago

Researchers randomly surveyed people at two amusement parks, Funland and Thrillville, to find out how many times they visit the

STALIN [3.7K]

On average, people visit Thrillville 2 more times per year than Funland.

<h3><u>Averages</u></h3>

To determine how many more times per year, on average, do people visit Thrillville than Funland, the following calculation must be performed:

Funland: 4,1,2,1,5,6,3,2,4,3,2,6,1,3,2 = 45
45 / 15 = 3
Thrillville: 8,6,5,7,2,5,4,2,1,9,3,8,3,7,5,2,9,4,2,8 = 100
100 / 20 = 5
5 - 3 = 2

Therefore, on average, people visit Thrillville 2 more times per year than Funland.

Learn more about averages in brainly.com/question/2426692

4 0

2 years ago

If the cost of manufacturing mobile phones is $10,000 for the factorytime plus $80 per phone and that each

ozzi

Answer:

500 phones

Step-by-step explanation:

cost of manufacturing: y = 80x + 10,000

money from phone sales: y = 100x

* note: x = #phones

solve for when they're equal;

100x = 80x + 10,000

100x - 80x = 80x - 80x + 10,000

20x = 10,000 –––––––––––> divide both sides by 20

x = 500

5 0

3 years ago

Diagram shows a cone and its axis of rotation which type of cross-section is formed when the cone is intersected by a plane cont

MAXImum [283]

Answer:

The cross section will be an isosceles triangle

Step-by-step explanation:

The picture of the question in the attached figure N 1

we know that

If a plane passes through the axis of rotation of the cone, then the resultant cross-section will be a triangle with one vertex as the vertex of the cone and the two sides of the triangle through the vertex A will be equal.

Where the base of the triangle will be equal to the diameter of the circular base of cone and the two congruent sides of triangle will be equal to the slant height of the cone

therefore

The cross section will be an isosceles triangle