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3 years ago

Would you rather prove a quadrilateral is a parallelogram by using slopes or lengths?

Mathematics

1 answer:

WITCHER [35]3 years ago

8 0

Answer:

Lengths

Step-by-step explanation:

Its easier to show someone numbers and show them which ides they go on than to graph it especially for people who struggle with graphing.

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A company sells tubs of yogurt for 75¢ each. twenty percent of this is profit for the food company. how much profit does the com

inn [45]

.15

75/5=15

20 percent of 75 is 15

20 percent = 15

40 percent = 30

60 percent = 45

80 percent = 60

100 percent = 75

4 0

3 years ago

Please help! .........

stira [4]

Answer:

1) When x is 1, y is 4, and vice versa

2) When x is -6, y is 42, and when x is 7, y is 114

3) When x is -2, y is 2, and when x is 8, y is 42

Step-by-step explanation:

$y=x^2-6x+9$

$y+x=5$ which can be rearranged as $y=5-x$ .

Substituting this lone y into the first equation, you get:

$5-x=x^2-6x+9$

Move everything to one side:

$x^2-5x+4=0$

Factor:

$(x-4)(x-1)=0$

$x=1, 4$

$y=4, 1$

$y-30=12x$ which can be rearranged as $y=12x+30$ .

$y=x^2+11x-12$

Let's use elimination this time and subtract the first equation from the second:

$0=x^2-x-42$

Factor:

$(x-7)(x+6)=0$

$x=-6, 7$

$y= -42, 114$

$y=x^2-2x+6$

$y=4x+10$

Let's set the two equations equal to each other through substitution:

$x^2-2x-6=4x+10$

Move everything to one side:

$x^2-6x-16=0$

Factor:

$(x-8)(x+2)=0$

$x=-2, 8$

$y= 2, 42$

Hope this helps!

6 0

3 years ago

ASAP!! Please help me. I will not accept nonsense answers, but will mark as BRAINLIEST if you answer is correctly with solutions

ololo11 [35]

Answer:

The answer would be f(a)=-1

-AC I hope this helps<3

7 0

3 years ago

HIJK is a rectangle. HJ=x and IK=2x-7 Find the length of each diagonal

laila [671]

The diagonals of a rectangle are congruent so set them equal to each other to get x = 2x - 7. isolate the variable (0 = x - 7 — x = 7) to get x = 7. the diagonals are seven.

3 0

3 years ago

Nicholas bought three business related books. His total bill was $150. If one book cost him 50% more than the other two books co

goldenfox [79]

The price of this more expensive book was $90.00 ($150 - $60) based on the date acquired from the question above. This problem can be solved using a simple algebra equation which consisted of one variable. The equation is stated as $150 = x + 1.5x (x = $150/2.5 = $60) where x is the price of the cheaper book and 1.5x is the price of the more expensive books because it has 50% higher price than the cheaper book<span>.</span>

4 0

3 years ago