1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Anon25 [30]
3 years ago
9

Before beginning voice lessons, Chad already knew how to sing 805 pieces, and he expects

Mathematics
1 answer:
NeTakaya3 years ago
4 0

Let's create an equation to find the # of weeks until Chad learns 937 pieces.

x = # of weeks

937 = 2x + 805

Subtract 805 from both sides.

132 = 2x

Divide both sides by 2

66 = x

Chad will need 66 weeks of lessons to learn 937 pieces.

You might be interested in
I need help ASAP please
EleoNora [17]

Answer:

B) (x -1)(x - 8)

Step-by-step explanation:

x = 1 and x = 8

x - 1 = 0 --->x = 1

x - 8 = 0--> x = 8

answer B) (x -1)(x - 8)

3 0
3 years ago
Indicate the answer choice that best completes the statement or answers the question.
eduard

The answer would be c. I can give an example if you want

4 0
3 years ago
Read 2 more answers
Solve the polynomial inequality and graph the
valkas [14]

Answer:

-6 < x < 3/4

Step-by-step explanation:

Hope this helps <333

6 0
2 years ago
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
3 years ago
A town is going to use its property tax records to pick
natita [175]
I believe B or C but that’s a straight guess. i would say B just because if you live like outside of town then ur screwed
5 0
2 years ago
Other questions:
  • Alison has 1/2 cups of yogurt for making fruit parfaits . Each parfait requires 1/8 cup of yogurt. How many parfaits can she mak
    10·2 answers
  • PLEASE HELP THIS IS DUE TOMORROW!!!!
    8·1 answer
  • In a small church in rural pennsylvania, the first pew can fit only 6 people. the second pew can fit 8, and the third can fit 10
    15·2 answers
  • Are the following figures similar?
    8·1 answer
  • ANSWER ASAP PLEASE!!!
    15·1 answer
  • Please help, multiple choice question
    14·1 answer
  • Please need help it’s due today.
    13·1 answer
  • Graph the line with slope -2 and y-intercept -3
    10·1 answer
  • Write the equation in slope intercept form. what are the slope and y intercept -5x-12y=11
    14·2 answers
  • The stock market dropped 220 points on Monday. It lost another 48 points on Tuesday, and on Wednesday it gained 96 points. What
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!