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1 year ago

3 increased by a number

Mathematics

2 answers:

zimovet [89]1 year ago

6 0

Answer:

4 or5or6

Step-by-step explanation:

3+1=4

3+2=5

3+3=6

Lerok [7]1 year ago

6 0

Answer:

$\large\boxed{3+d}$

Step-by-step explanation:

How to increase 3 by a number?

In maths, increasing is the same as adding. So we add a number (let the number be $d$ ) to $3$ : $3+d$

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1. What is the sum of the two vectors (-1,-4) and (3,5)?

mash [69]

What is the sum of the two vectors (-1,-4) and (3,5)

to find the sum we add x component with x and y with y

(-1+3) , ( -4+5) = (2,1)

Hence option B is the correct option

2. Evaluate the following expression: -1(5,-1) + 2(1,1)

-1(5,-1) + 2(1,1) = (-5 , 1) + (2,2)

= ( -3 , 3)

Second option is the correct

3. Evaluate the following expression (1,4) -5(1,1)

(1,4) -5(1,1)

= (1,4) (-5,-5)

= (1-5 , 4-5)

= (-4,-1)

4. Let v=(8,-4) and w=(-4,2). Which of the following is true?

as we can see

(8,-4) = -2(-4,2)

v= -2w

and also the Y component of w is 2

5. Which of the following vectors are orthogonal to (-1,3)?

The orthogonal vector will be (3,1) as the dot product is zero

(-1,3).(3,1) = (-3+3) = 0

Hence Option third is the correct one

8 0

3 years ago

What is the slope of the line?

spin [16.1K]

Answer:

-7/2

Step-by-step explanation:

The slope of a line can be defined as: $\frac{rise}{run}$ , which can be more formally calculated as: $\frac{y_2-y_1}{x_2-x_1}$ , where it's essentially the same thing, except the rise/run is being calculated with two points (which you already need)

So let's just say: $(x_1, y_1)=(-5, 5)\text{ and } (x_2, y_2)=(-3, -2)$

Plugging the values into the equation we get: $\frac{-2-5}{-3-(-5)}\implies\frac{-7}{-3+5}\implies-\frac{7}{2}$

You can also just look at the graph and see that from point 1 to point 2, it "rised" -7 units, and "ran" 2 units.

Notice how the "rise" is negative? That just means it went down.

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1 year ago

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Vaselesa [24]

Answer:

Step-by-step explanation:jjjj

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3 years ago

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Serena's father tipped a taxi driver $5 for a $25 ride. What was the percent of the tip that he paid?

patriot [66]

To find the percent, we do 5/25. That gives the decimal 0.2, to change that to a percent, we move the decimal point 2 places to the right and add a % sign, giving 20%

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