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jeyben [28]
2 years ago
10

PLEASEE HELP!

Mathematics
1 answer:
melamori03 [73]2 years ago
7 0

Answer:

Two non zero vectors, a and b are parallel when they are scalar multiples of each other such that a = c·b where c is a scalar quantity.

Therefore, in order to find a vector that is parallel to the vector, b = (-2, -1), we multiply the vector, b by a scaler quantity

Step-by-step explanation:

Given that the vector b = (-2, -1) can be written as follows;

b = -2·i - j, we have;

\left | b \right | = √((-2)² + (-1)²) = √5

Therefore, we have;

The coordinates of the endpoint of the vector are (-2, 0) and (0, -1)

Therefore, the slope of the vector = (-1 - 0)/(0 - (-2)) = -1/2

The slope of parallel vectors are equal, which gives the slope of the parallel vector = -1/2 = (λ × (-1 - 0))/(λ ×(0 - (-2))

Therefore, a parallel vector is obtained from a vector by multiplying with a scaler product.

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Because then you can just add the tops like they are
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When placed near a second charge, a 60-μC charge experiences a force of 0.30 N. What is the electric field strength at the locat
jeka57 [31]

Answer:

E=5000N/C

Step-by-step explanation:

From the question we are told that

Charge q= 60 \mu C

Force F_=0.30N

Generally the equation for electric field strength is mathematically given as

E=F/q

E=\frac{0.30}{60*10^-^6}

Therefore

E=5000N/C

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Calcium carbonate decomposes at 1200° C to form carbon
Ksju [112]
Ther are your answers

6 0
3 years ago
Read 2 more answers
A measure of ____________ summarizes all of the values in a data set with a ______________ number.
iris [78.8K]

Answer:

center; single

Step-by-step explanation:

The measures of central tendency or center measures are a number that attempts to describe or summarize the entire data set by means of a single value that represents the center of its distribution. There are different measures of central tendency, and each of them is used depending on the characteristics of the data used.

Some examples of measure of central tendency are:

* Arithmetic mean

* Mode

* Median

* Geometric mean.

Therefore, based on what has been described above, the answer to this question is the third option: center; single

Then:

A measure of __center_____ summarizes all of the values in a data set with a ____single_______ number.

5 0
2 years ago
Read 2 more answers
Can anyone pls help me with this I'll mark as brainlist for correct answer please do explain in detail each answers Ty! (I'm pre
densk [106]

<u>Question 8</u>

a^2 + 7a + 12

= (a+3)(a+4)

When factorising a quadratic, the product of the two factors should equal the constant term (12), and the sum of the two factors should equal the linear term (7). To find the two factors, list out the factors of 12 (1x12, 2x6, 3x4) and identify the pair that adds up to 7 (3+4).

An alternative method if you get stuck during your exam would be to solve it algebraically using the quadratic formula and then write it in the factorised form.

a = (-7 +or- sqrt(7^2 - 4(1)(12)) / 2(1)

= (-7 +or- sqrt(1))/2

= -3 or -4

These factors are the negative of the values that would go in the brackets when written in factorised form, as when a = -3 the factor (a+3) would equal 0. (If it were positive 3 instead, then in the factorised form it would be a-3).

<u>Question 10</u>

-3(x - y)/9 + (4x - 7y)/2 - (x + y)/18

Rewrite each fraction with a common denominator so you can combine the fractions into one.

= -6(x - y)/18 + 9(4x - 7y)/18 - (x + y)/18

= (-6(x - y) + 9(4x - 7y) - (x + y)) /18

Expand the brackets and collect like terms.

= (-6x + 6y + 36x - 63y - x - y)/18

= (29x - 58y)/18

= 29/18 x - 29/9 y

7 0
2 years ago
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