All categories

2 years ago

Simplify: (-2x - 3) – (3x2 – 8x + 9). Choose the standard form of the answer.

Mathematics

1 answer:

lawyer [7]2 years ago

7 0

Answer:

Step-by-step explanation:

Given

(- 2x - 3) - (3x² - 8x + 9) ← distribute parenthesis

= - 2x - 3 - 3x² + 8x - 9 ← collect like terms

= - 3x² + 6x - 12 → C

You might be interested in

Help meh plzzz buddy UwU

zhannawk [14.2K]

Answer:

10. 16 cubic cm

11. 5 and 1/3 cubic cm

Step-by-step explanation:

4 · 4 · 2 = 32

32 times 1/2 = 16

2 · 2 · 4 = 16

16 times 1/3

3 0

2 years ago

Read 2 more answers

You get GPS units from two manufacturers, A and B. You get 43% of your units from A and 57% of your units from B. In the past, 2

defon

Answer:

0.5015 = 50.15% probability that it came from manufacturer A.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

$P(B|A) = \frac{P(A \cap B)}{P(A)}$

In which

P(B|A) is the probability of event B happening, given that A happened.

$P(A \cap B)$ is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Defective

Event B: From manufacturer A.

Probability a unit is defective:

2% of 43%(from manufacturer A)

1.5% of 57%(from manufacturer B). So

$P(A) = 0.02*0.43 + 0.015*0.57 = 0.01715$

Probability a unit is defective and from manufacturer A:

2% of 43%. So

$P(A \cap B) = 0.02*0.43 = 0.0086$

What is the probability that it came from manufacturer A?

$P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.0086}{0.01715} = 0.5015$

0.5015 = 50.15% probability that it came from manufacturer A.

4 0

2 years ago

Mario is constructing a frame for a 10 in .by 8 in. photo. He wants the frame to be the same width all the way around and the to

alexgriva [62]

(10+2x)(8+2x) = 120
4x^2 + 36x + 80 = 120
x^2 + 9x + 20 = 30

x^2 + 9x - 10 = 0

(x+10)(x-1) = 0

x = 1 inch dimension

8 0

3 years ago

Read 2 more answers

HURRY TEACHER DIDN'T PUT ON STUDY GUIDE

Andru [333]

1 step: Place the point of the compass on point M and draw an arc, making sure the width of the compass opening is greater than 1/2MN.

2 step: Place the point of the compass on point N and draw an arc that has the same radius as previous one.

3 step: Connect two points of intersection of drawn arcs. Obtained line will be bisector.

Answer: option D.

5 0

3 years ago

Read 2 more answers

The Thompson family borrowed $120,000

kolezko [41]

Answer:

27,600

Step-by-step explanation:

6 0

2 years ago