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2 years ago

Find magnitude and directionof vector a = ( -3 , -3 )

Mathematics

1 answer:

nevsk [136]2 years ago

3 0

Answer:

Step-by-step explanation:

Magnitude: |a|= $\sqrt{(-3)^{2}+(-3)^{2} }=3\sqrt{2}$

Direction: in the negative direction of the Ox axe and Oy axe

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Solve using substitution x=(3y+1) and x+4y=15

natka813 [3]

The solution is: x= 7 and y = 2

Step-by-step explanation:

Given equations are:

$x = 3y+1\ \ \ \ Eqn\ 1\\x+4y = 15\ \ \ \ Eqn\ 2$

Putting x = 3y+1 in equation 2 from equation 1

$3y+1+4y = 15\\7y+1 = 15\\$

Subtracting 1 from both sides

$7y+1-1 = 15-1\\7y = 14$

Dividing both sides by 7

$\frac{7y}{7} =\frac{14}{7}\\y = 2$

Putting y=2 in equation 1

$x = 3(2) +1\\x = 6+1\\x = 7$

Hence,

The solution is: x= 7 and y = 2

Keywords: Linear equations, substitution method

Learn more about linear equations at:

#LearnwithBrainly

3 0

3 years ago

Help me pls!!!!!!!!!

Alexeev081 [22]

Answer:

Step-by-step explanation:

Line EJ is a straight line, with Line DC cutting through it. So 180 = Angle DCJ + Angle DCE. So Angle DCE = 48. Triangles are equal to 180°. So 180 = ? +39 +48. So ? = 93

8 0

3 years ago

Terrance Jacobs is looking for a larger home. Jacobs offers $205,000 for a fourbedroom house and the seller accepts. Jacobs wish

dalvyx [7]

Answer:

Terrance will need a mortgage loan of US$ 174,250

Step-by-step explanation:

1. Let's review the information given to solve the question.

Value of the house Terrance Jacobs is going to buy = US$ 205,000

Down payment Terrance can afford = 15% of the value of the house

Down payment Terrance can afford = 15% of US$ 205,000

Down payment Terrance can afford = 15% * 205,000

Down payment Terrance can afford = US$ 30,750

2. For finding the amount of the mortgage loan Terrance need for buying the house, we should do this:

Amount of mortgage loan = Value of the house - Down payment

Amount of mortgage loan = 205,000 - 30,750

Amount of mortgage loan = US$ 174,250

Terrance will need a mortgage loan of US$ 174,250

7 0

4 years ago

Find the lowest common denominator for the following rational expressions

SCORPION-xisa [38]

Answer:

Hi i think that the correct answer is B

3 0

3 years ago

One of the heaviest rainfalls recorded in Greentown in a 24-hour period was 178.8 centimeters. If the rainfall was constant. how

Fittoniya [83]

Answer:

7.45cm

Step-by-step explanation:

178.8 ÷ 24 hours = 7.45 centimetres per hour.

7 0

3 years ago

Find magnitude and directionof vector a = ( -3 , -3 )​

Find magnitude and directionof vector a = ( -3 , -3 )