Mathematics, 06.07.2019 10:40 connermichaela

Evaluate the expression 40÷1+3-(3×7)+7-5

Answers: 2

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For this problem, you will have to use PEMDAS (Parentheses) (Exponents) (Multiplication/Division) (Addition/Subtraction)

First of all, you will want to solve for the values inside the parentheses first

40 ÷ 1+3-(21)+7-5 Now check for anything that includes multiplication/division and do that

40+3-21+7-5 All you have left now is addition and subtraction. It must go from left to right, therefore if addition is first, do addition, if subtraction is first, then do subtraction.

Final answer = 24

Answer from: abigailb4424

You need to use PEDMAS for this.

40/1=3-(3 times 7) + 7-5

First the parenthesis.

(3 times 7 is 21 )

40/1+3-(21)+7-5

Next is exponents but there are none so move on to division.

40/1 = 40

40+3- (21) + 7-5

Then add and subtraction from left to right.

40+3=43

43- 21 + 7-5

43-21 is 22.

22+7-5

7-5 is 2

22+2 is 24

24 is the answer! :)

Answer from: Quest

if the eqn of the parabola is f(x) = (x-4)(x+2), we need to mult. this out to find the coordinates of the vertex.

then f(x) = x^2 + 2x - 4x - 8, and f(x) = x^2 - 2x - 8.

one way in which you can find the vertex is to calculate x = -b / (2a). here, that comes to

)

x = = 1. f(1) = 1^2 - 2(1) - 8 = - 9. vertex is at (1, -9).

2(1)

find another point on the curve: let x=0, for which y=-8. then (0, -8) is on the curve. plot the vertex and this point and draw a smooth parabola thru both.

hope this

Use the parabola tool to graph the quadratic function f(x)=(x-5)^2+1 graph the parabola by first plo

Answer from: Quest

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.

therefore, the correct answer is d.

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