Hhhhheeeeeeeeeeellllllllllppppppp
brainlistttttttttt

Answers

Answer 1

Answer: Subtract the old reading from the new reading

7143 - 6997 = 146

146 units in all

Note: The first one hundred units costs 24p each unit
the rest cost 16p per unit

100 + 46 = 146
100(24p) = 2400p
46(16p) = 736p

2400 + 736 = 3136p

cost: 3136p

hope this helps

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What is y =2x 5 in standard form?

Answers

To write a linear equation in standard form, move each variable term to the left side of the equation and simplify.Ax+By=CA⁢x+B⁢y=CMove 2x2⁢xto the left side of the equation because it contains a variable.y−2x=5y-2⁢x=5Amust be positive, so multiply both sides of the equation by −1−1⋅(y−2x)=−1⋅5-1⋅y-2⁢x=-1⋅5Simplify the left side of the equation.Multiply −1-1by y−2xy-2⁢xto get −1(y−2x)-1⁢y-2⁢x.−1(y−2x)=−1⋅5-1⁢y-2⁢x=-1⋅5Apply the distributive property.−1y−1(−2x)=−1⋅5-1⁢y-1⁢-2⁢x=-1⋅5Simplify.Rewrite −1y-1⁢yas −y-⁢y.−y−1(−2x)=−1⋅5-⁢y-1⁢-2⁢x=-1⋅5Multiply −2-2by −1-1to get 22.−y+2x=−1⋅5-⁢y+2⁢x=-1⋅5Reorder −y-⁢yand 2x2⁢x.2x−y=−1⋅52⁢x-⁢y=-1⋅52x−y=−1⋅52⁢x-⁢y=-1⋅52x−y=−1⋅52⁢x-⁢y=-1⋅5Multiply −1-1by 55to get −5-5.2x−y=−52⁢x-⁢y=-5

A four-sided polygon has these properties of rotation and reflection:When it rotates 360°, it maps onto itself at four different angles of rotation.
It can be reflected onto itself across four different lines of reflection.
Which kind of polygon must it be?

Answers

A square of course fits the description.

it would be a square had some research

You are told that P(A | B) = P(B | A). Which statement below must be true? A and B are equally likely
P(A | B) = 0.5
A and B are independent
A and B are dependent

Answers

The best answer to the question that is being stated above would be that A and B are both dependent. If I was told that P(A | B) = P (B | A), then the true statement is that both variables inside would be dependent upon each other, no matter if you exchange their places with one another.

Answer:

The answer is A and B are dependent

Formulate the quadratic function that contains the points (-1,2), (0,-1) and (2,5). F(x) = 2x2 - x - 1 f(x) = 2x2 x 1 f(x) = 2x2 - x 2 f(x) = 2x2 - x - 2.

Answers

Answer:

(a) F(x) = 2x^2 - x - 1

Step-by-step explanation:

The quadratic regression function of a graphing calculator does this nicely.

The one attached shows the function to be ...

F(x) = 2x^2 -x -1

Additional comments

The supplied point (0, -1) tells you the y-intercept is -1. That means the constant in the function's equation will be -1. Only one answer choice has that.

F(x) = 2x^2 -x -1

As always, the first step in problem solving should be to look at the problem, and look at the available solution choices. Understanding these things will generally allow you to throw out answer choices that don't provide a sensible answer to the question. Here, that leaves you with only one answer choice, which is all you need.

The distances (y), in miles, of two cars from their starting points at certain times (x), in hours, are shown by the equations below:Car A
y = 55x + 32

Car B
y = 42x + 58

After how many hours will the two cars be at the same distance from their starting point and what will that distance be?

2 hours, 142 miles
2 hours, 145 miles
3 hours, 142 miles
3 hours, 145 miles