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3 years ago

What is the greatest common factor for 13 and 39

Mathematics

2 answers:

irinina [24]3 years ago

8 0

the greatest common factor between 13 and 39 is 13

Elodia [21]3 years ago

6 0

NAMASTE :)

Here is your answer:

GREATEST COMMON FACTOR OF 13 AND 39 IS 13

13= 13×1
39=13×3

greatest common factor $\boxed{= 13}$

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Anna has 4/5 Cookies

AlekseyPX

Answer:

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8 0

4 years ago

|5d| for d = 8 <br> A. –13<br> B. 13<br> C. 40<br> D. –40

Licemer1 [7]

|5d|
|5| × |8|
5 × 8
= 40

The answer is C

Hope is correct

6 0

4 years ago

You can buy 20 ounces of cereal for $4.40 or 16 ounces of the same brand for $3.68. Which is the better buy?

Natalka [10]

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3 0

4 years ago

BE is parallel to CD.

Viktor [21]

Answer:

CD = 8 cm

Step-by-step explanation:

Given

See attachment

$AE=6 cm,\ ED=4 cm,\ AB=4.5 cm,\ BE=4.8 cm.$

Required

Find CD

To calculate CD, we first calculate BC using the following equivalent ratio

$AB : BC = AE:ED$

Substitute values for AB, AE and ED

$4.5 : BC = 6 : 4$

Express as fraction

$\frac{4.5 }{ BC} = \frac{6 }{ 4}$

Cross Multiply

$BC * 6 = 4.5 * 4$

$BC * 6 = 18$

Divide through by 6

$BC = 3$

To calculate CD,

We make use of the following equivalent ratio

$AB : BE = AC : CD$

Where

$AC = AB + BC$

$AC = 4.5 + 3$

$AC = 7.5$

So, we have:

$AB : BE = AC : CD$

$4.5 : 4.8 = 7.5 : CD$

Express as fraction

$\frac{4.5 }{ 4.8 }= \frac{7.5 }{ CD}$

Cross Multiply

$4.5 * CD = 7.5 * 4.8$

Divide through by 4.5

$CD = \frac{7.5 * 4.8}{4.5}$

$CD = \frac{36}{4.5}$

$CD = 8$

6 0

3 years ago

2abc-3ab if a=2, b=-3, c=2

Elden [556K]

So a=2 since a is next to the first 2 it would be 2x2 which equals 4 next it’s B and B= -3 so -3x4 equals -12 and then c also equals 2 so it would be -12x2 and that equals -24. Moving on to the next part as I said a=2 so it would be 3x2 and that equals 6 next it’s B again so 6x -3 equals -18 so now take -24 and -18 and subtract them and you would get -6. Sorry if this answer is wrong I did my best...hope it helped.

5 0

3 years ago