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3 years ago

Find vector c if c=a+b (view image) A. 7,6 B. -7,2 C. 0,-5 D. -5, 0

Mathematics

1 answer:

o-na [289]3 years ago

8 0

Answer:

$\vec c=$

Option B

Step-by-step explanation:

Sum of vectors in $\mathbb{R}^2$

Given two vectors $\vec a=$ and $\vec b=$ . The sum of both vectors is:

$\vec a+\vec b =$

The vectors in the figure are

$\vec a=$

$\vec b=$

The sum is

$\vec c=\vec a+\vec b =$

$\vec c=$

Option B

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twice the sum of a number and 2 is equal to three times the difference of the number and 3. Find the number

Lana71 [14]

2(x+2)=3(x-3)
2x+4=3x-9
2x=3x-13
-x=-13
x=13

The number is 13

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3 years ago

A, B, and C are polynomials, where: A = 3x – 4 B = x + 7 C = x2 + 2 What is A2 – (B + C) in simplest form? 8x2 – 25x + 7 8x2– 25

Zina [86]

Hello,

Answer A

(3x-4)²-(x+7+x²+2)=9x²-24x+16-x-x²-9
=8x²-25x+7

7 0

3 years ago

Read 2 more answers

10.

marusya05 [52]

Answer:

The slope of the line 3.

Step-by-step explanation:

The line is going through 3. Although it is not -3, because if the line is sloping upward from left to right, then the slope is positive (+). If the line is sloping downward from left to right, the slope is negative (-).

5 0

2 years ago

Read 2 more answers

Can you please help me out

Taya2010 [7]

The bag contains,

Red (R) marbles is 9, Green (G) marbles is 7 and Blue (B) marbles is 4,

Total marbles (possible outcome) is,

$\text{Total marbles = (R) + (G) +(B) = 9 + 7 + 4 = 20 marbles}$

Let P(R) represent the probablity of picking a red marble,

P(G) represent the probability of picking a green marble and,

P(B) represent the probability of picking a blue marble.

Probability , P, is,

$\text{Prob, P =}\frac{required\text{ outcome}}{possible\text{ outcome}}$ $\begin{gathered} P(R)=\frac{9}{20} \\ P(G)=\frac{7}{20} \\ P(B)=\frac{4}{20} \end{gathered}$

Probablity of drawing a Red marble (R) and then a blue marble (B) without being replaced,

That means once a marble is drawn, the total marbles (possible outcome) reduces as well,

$\begin{gathered} \text{Prob of a red marble P(R) =}\frac{9}{20} \\ \text{Prob of }a\text{ blue marble =}\frac{4}{19} \\ \text{After a marble is selected without replacement, marbles left is 19} \\ \text{Prob of red marble + prob of blue marble = P(R) + P(B) = }\frac{9}{20}+\frac{4}{19}=\frac{251}{380} \\ \text{Hence, the probability is }\frac{251}{380} \end{gathered}$

Hence, the best option is G.

5 0

1 year ago

Name

Damm [24]

Answer: The correct answer is Tyrell, Yen, Hana....its C

Step-by-step explanation: Hope this helped :}

4 0

3 years ago