All categories

3 years ago

Need help factoring this expression

Mathematics

2 answers:

Sindrei [870]3 years ago

5 0

3x+9

3 is a factor of both 3 and 9

3(x+3)

Papessa [141]3 years ago

3 0

In order to factor the expression, you need to find one thing that's a factor of EACH term in the expression. So let's look at the terms.

-- factors of 3x : 1, 3, x, 3x

-- factors of 9 : 1, 3, 9

The only things that are factors of both terms are 1 and 3. We can ignore 1, because 1 is always a factor of anything. That leaves us with 3 . So we'll factor 3 out of the expression.

3x + 9 = <em>3 (x + 3)</em>

You might be interested in

PLZ HELP! A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains. If a tr

Kruka [31]

Answer:

3.8

Step-by-step explanation:

A train averages a speed of 90 miles per hour across the plains and 37.5 miles per hour through the mountains.

If a trip of 300 miles took 3 hour and 48 minutes, how much of it was through the mountains?

Let d = distance traveled at 37.5 (thru the mountains)

then

(300-d) = distance traveled at 90 mph

Write a time equation, time = dist/speed

change 3 hr 48 min to hrs: 3 + 48/60 = 3.8 hrs

plain time + mountain time = 3.8 hrs

%28300-d%29%2F90 + d%2F37.5 = 3.8

Multiply 90*37.5

3375*%28300-d%29%2F90 + 3375*d%2F37.5 = 3.8(3375)

cancel the denominator

37.5(300-d) + 90d = 12825

11250 - 37.5d + 90d = 12825

52.5d = 1575

d = 1575/52.5

d = 30 mi thru the mountains

Check this, find the distance on the plain

300-30 = 270 mi

Find the actual time at each speed

270/90 = 3 hrs

30/37.5 = .8 hrs

-----------------

total time: 3.8 hrs

7 0

3 years ago

Triangle A″B″C″ is formed using the translation (x + 2, y + 0) and the dilation by a scale factor of one half from the origin. W

Travka [436]

Complete question:

Triangle A″B″C″ is formed using the translation (x + 2, y + 0) and the dilation by a scale factor of one half from the origin. Which equation explains the relationship between segment AB and segment A double prime B double prime?

A) segment a double prime b double prime = segment ab over 2

B) segment ab = segment a double prime b double prime over 2

C) segment ab over segment a double prime b double prime = one half

D) segment a double prime b double prime over segment ab = 2

Answer:

A) segment a double prime b double prime = segment ab over 2.

It can be rewritten as:

$A"B" = \frac{AB}{2}$

Step-by-step explanation:

Here, we are given triangle A″B″C which was formed using the translation (x + 2, y + 0) and the dilation by a scale factor of one half from the origin.

We know segment A"B" equals segment AB multiplied by the scale factor.

A"B" = AB * s.f.

Since we are given a scale factor of ½

Therefore,

$A"B" = AB * \frac{1}{2}$

$A"B" = \frac{AB}{2}$

The equation that explains the relationship between segment AB and segment A"B" is

$A"B" = \frac{AB}{2}$

Option A is correct

5 0

3 years ago

Ignacio and Kirsten want to find out if the triangle formed by connecting (-1,-1). (-3,2), and (2, 1) is a right triangle Ignaci

navik [9.2K]

Answer:

Both plans are correct

Step-by-step explanation:

I already did it

8 0

3 years ago

Solve : h /24 = - 6

docker41 [41]

Answer:

h = -144

you multiply 24 and -6 to get -144.

5 0

3 years ago

Read 2 more answers

A group of 15 explorers to the south pole had just enough food to last them for 40 days how long would the food last if all of a

Trava [24]

Answer:

3 days

Step-by-step explanation:

15-3=12

40/12= 3.3

round to 3

5 0

3 years ago