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Goshia [24]
3 years ago
11

Heeelllllllppppppppp

Mathematics
1 answer:
Crank3 years ago
8 0
Its the first one. I typed them all in my graphing calculator to check
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Help please thanks.............
Dahasolnce [82]
B is correct because when you plug in x=0 into the equation, you get 5.
This means that the y intercept is five.

Here's why the other answer choices are wrong:
The graph is actually INCREASING.
x can be NEGATIVE.
Not all exponential graphs has a y intercept of ONE.

Have an awesome day!
8 0
3 years ago
Randall built a scale model of a barn he wants to construct. What is the total volume of the model? Round your answers to the ne
tatiyna

Answer:

brainly.com/question/17024807

Step-by-step explanation:

This question was already asked and I don't want to take that person's credit, but I recommend you going to that link because it has steps, plus the answer!

3 0
3 years ago
Read 2 more answers
Hi, how are you today i want you to answer my questions in math subject please because my teacher wants to done by today and sho
kondor19780726 [428]

Answer: see work below

Step-by-step explanation:

1) 3(2f + 4)

distribute the 3

= 6f + 12

2) 3(4t + 2)

distribute the 3

= 12t + 6

3) 7(6k -2v)

distribute the 7

= 42k - 14v

4) 5(2q - 9)

distribute the 5

= 10q - 45

(im not sure what the red mark is. if it's a negative than my answer would be opposite: -10q + 45)

5) 3(2e + 5t)

distribute the 3

= 6e + 15t

(im not sure what the red mark is. if it's a negative my answer would be opposite: -6e -15t)

6) 4(3r - 5)

distribute the 4

= 12r - 20

7 0
3 years ago
Read 2 more answers
The vertices of a parallelogram are A(x1, y1), B(x2, y2), C(x3, y3), and D(x4, y4). Which of the following must be true if paral
Iteru [2.4K]

The answer is really none of the above, because all of these have divisions by difference in x, and there are perfectly fine rectangles where those will mean dividing by zero.

To do the problem the way they want us to, we note segments with the same slope are parallel (or collinear); segments with slopes which multiply to -1 are perpendicular.

Let's figure out what each choice is trying to tell us by translating it into parallel and perpendicular. Remember A is point 1, ...

A. ((y_4-y_3)/(x_4-x_3)= (y_3-y_2)/(x_3-x_2)) and ((y_4-y_3)/(x_4-x_3)×(y_3-y_2)/(x_3-x_2))=-1

translated, that's CD║BC and CD⊥BC - contradictory; second half right

B. (y_4-y_3)/(x_4-x_3)= (y_2-y_1)/(x_2-x_1) and ((y_4-y_3)/(x_4-x_3)×(y_2-y_1)/(x_2-x_1))=-1

CD ║ AB and CD ⊥ AB - only the parallelogram half is right

C. (y_4-y_3)/(x_4-x_3)= (y_2-y_1)/(x_2-x_1) and (y_4-y_3)/(x_4-x_3)×(y_3-y_2)/(x_3-x_2)=-1

CD║AB and CD⊥BC - that's TRUE

D. (y_4-y_3)/(x_4-x_3)= (y_3-y_1)/(x_3-x_1) and (y_4-y_3)/(x_4-x_3)×(y_2-y_1)/(x_2-x_1)=-1

CD║AC and CD⊥AB - nope

Answer: C

The way I'd get the proper expression is with the dot product.

A parallelogram is a rectangle when adjacent sides are perpendicular. It only takes one right angle to make them all right.

Two sides are perpendicular when the dot product of their direction vectors is zero. All the answers have y_4 - y_3 so one side is CD. The other side must be BC or AD; AD would give y_4 - y_1 terms which don't appear among the answer, so let's go with BC.

The direction vectors are

D-C = (x_4 - x_3, y_4 - y_3)

C-B = (x_3 - x_2, y_3 - y_2)

For perpendicularity we need a zero dot product:

0 = (D-C)\cdot(C-B) = (x_4 - x_3)(x_3 - x_2) + (y_4 - y_3)(y_3 - y_2)

- (x_4 - x_3)(x_3 - x_2) = (y_4 - y_3)(y_3 - y_2)

That's the correct expression, given it's a parallelogram, to demonstrate it's a rectangle. The divisions make it iffy.

8 0
2 years ago
HELP ME AND PLEASE HURRY
Damm [24]
The answer is sometimes true
8 0
2 years ago
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