Solve question in photo. Mathematics help. last one

Answers

Answer 1

Answer: easeier than last
y=2x+6
sub 2x+6 for y
3x-(2x+6)=6
3x-2x-6=6
x-6=6
add 6
x=12
sub
y=2x+6
y=2(12)+6
y=24+6
y=30

x=12
y=30
(x,y)
(12,30)

soltion is (12,30)

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Consider the graph of f(x) = 2x 3 – 3x 2 – 14x. On a coordinate plane, a graph increases through (negative 2, 0) to (negative 1, 10), decreases through (0, 0) to (2, negative 24), and then increases through (3.5, 0) through (4, 20). Based on the graph, what is the solution to 2x 3 – 3x 2 ≥ 14x?

4. Find the distance between the two points. Round to the nearest tenth if necessary.(-2, -1) and (3, 5).

Answers

Answer:

Distance = 7.8 units

Step-by-step explanation:

In coordinate geometry, the distance between the 2 points is given by

$Distance = \sqrt{(x1-x2)^(2) + (y1-y2)^(2) }$

where (x1,y1) and (x2,y2) are coordinates of the 2 points.

Above the 2 points given are, (-2,-1) and (3,5).

x1 = -2 , y1 = -1 , x2 = 3, y2 = 5

$Distance = \sqrt{((-2)-(3))^(2) + ((-1)-(5))^(2) }$

$Distance = √(61)$

Distance = 7.8102 units

To the nearest tenth, Distance = 7.8 units

Given ∠ = 31°, ∠ = (3 + 2)°, ∠ = (7 − 1)°. What is ∠? Responses A 10°10 ° B 20º20º C 30º30º D 40º

Answers

To find the value of ∠, you can add the given angle measures:

∠ = 31° + (3 + 2)° + (7 - 1)°
∠ = 31° + 5° + 6°
∠ = 42°

So, ∠ is equal to 42°. None of the provided response options match this value.

Solve the linear equation 2.25 – 11j – 7.75 + 1.5j = 0.5j – 1.

Answers

2.25-11j-7.75+1.5j=0.5j-1 -5.5-9.5j=0.5j-1 10j=-4.5 j=-0.45=9/20

Answer:

j = –0.45

Step-by-step explanation:

just got it right

The students in Ms. Chang's class decide to order water bottles that advertise the walkathon. Hyun obtains two different quotes for the costs of the bottles. a. For each company, write an equation Hyun could use to calculate the cost for any number of bottles b. On the same set of axes, graph both equations from part (a). Which variable is the independent variable? Which is the dependent variable? C. From which company do you think the class should buy water bottles? What factors influenced your decision? d. For what number of water bottles is the cost the same for both companies? Explain.

Answers

The students' order of water bottle is an illustration of linear equation

The equations are y = 54x and y = 525 + 53x
The class should buy water bottles from Fill it Up Inc
525 water bottles costs the same for both companies

The equation for the cost of bottle

For Fill it Up Inc, we have:

Cost = $54 per bottle

For Bottles by Bob, Co, we have:

Set-up fee = $525

Cost = $53 per bottle

So, the equations are:

Fill it Up Inc: y = 54x
Bottles by Bob: y = 525 + 53x

The number of bottle (x) represents the independent variable, while the total cost (y) represents the dependent variable

The graph

See attachment for graphs

The class decision

The class should buy water bottles from Fill it Up Inc, because Fill it Up Inc do not charge set-up fee, and the company's rate per bottle is just a little above Bottles by Bob

The number of bottle at equal cost

In (a), we have:

y = 54x and y = 525 + 53x

Substitute 54x for y in the second equation

54x = 525 + 53x

Subtract 53x from both sides

x = 525

Hence, water 525 water bottles costs the same for both companies

Read more about linear equations at:

brainly.com/question/14323743

6.371 in lowest terms

Answers

Well you would have to round this 5 and above goes up. Since 1 is lower than 5 that would leave you at 6.37. 7 rounds up so that would change to 6.4. Lastly 4 would round down, So that would leave you with 6. Now 6 is the simplest form but if your looking for rounded to the nearest tenth the answer would be 6.4. If your looking for rounded to the nearest 100th place 6.37. But over all simplest form is 6.

Anyone know the answer?

Answers

Hi there your answer would be d

The answer is D. 77.

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