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2 years ago

Factorise: 3x²+17x+10

Mathematics

2 answers:

aliina [53]2 years ago

5 0

The answer is (x+5) (3x+2)

g100num [7]2 years ago

4 0

Answer:

(3x+2) (x+5)

Step-by-step explanation:

3x²+17x+10

SPLITTING OF MIDDLE TERM

3x²+15x+2x+10

COMMON FACTOR FROM PAIRS

3x(x+5) + 2(x+5)

= (3x+2)(x+5)

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Cost A=0.6489 take the inverse cosine of both sides

Stolb23 [73]

I am not quite sure what the question asks for,
But this is what i assume it wants:

Cos A= 0.6489
In this given one, we basically find the size of the angle A
we do cosine inverse on both sides to get the size of the angle A
$cos^{-1}$ : It looks like this in the calculator
$cos^{-1}$ × cos A= $cos^{-1}$ (0.6489)
( $cos^{-1}$ and cos cancels out)
A= $cos^{-1}$ (0.6489)
A=49.54°
check:
cos 49.54=0.6489 (its right!)

6 0

3 years ago

Which of the ratio equivalent to 1:3 select all that apply

nekit [7.7K]

Answer:

4:12

6:18

8:24

Two ratios that have the same value are called equivalent ratios. To find an equivalent ratio, multiply or divide both quantities by the same number.

3 0

3 years ago

Please help me out with these no one is helping me. Please anyone

Olin [163]

Answer:

Below.

Step-by-step explanation:

You find the values of y by substituting the values of x in the expression x^2 + 3x - 1.

So f(-4) = (-4)^2 + 3(-4) - 1 = 16-12-1 = 3

in the same way f(-3) = -1, f(-2) = -3, f(-1) = -3,

f(0) = -1 and f(1) = 3.

Now plot the points (-4, 3) , (-3, -1) and so on

Then you can read the values off this graph.

8 0

3 years ago

Read 2 more answers

What is 1/3 to the power of 2

slamgirl [31]

Answer:

Brainliest!

Step-by-step explanation:

1/3 is going to be like

1^2

------

3^2

= 1/9

7 0

3 years ago

Can someone please help me? I don't understand how to solve this.

Scilla [17]

Answer:

(5, 15)

Step-by-step explanation:

The problem statement tells you how to solve it. You are expected to know what the midpoint formula is.

You are given that (x, y) is the unknown end point. If (Mx, My) is the midpoint, and (x1, y1) is one end point, the midpoint formula tells you ...

Mx = (x1 +x)/2

My = (y1 +y)/2

Solving these equations for x and y, you get ...

2Mx = x1 +x

x = 2Mx -x1

Similarly, ...

2My = y1 +y

y = 2My -y1

Filling in the given coordinates, this becomes ...

x = 2(-2) -(-9) = -4 +9 = 5

y = 2(7) -(-1) = 14 +1 = 15

The other endpoint is (5, 15).

_____

Additional comment

I like to write the midpoint formula for points A and B as ...

M = (A +B)/2

where A and B each represent an ordered pair (or triple, in 3 dimensions). The arithmetic is done element-by-element on the ordered pairs, so this formula is equivalent to the one above.

If you solve it for B, you get ...

B = 2M - A . . . . the other endpoint given the midpoint and one endpoint

This might be a formula you want to add to your list of useful formulas in Algebra.

3 0

2 years ago