All categories

2 years ago

What is the length ?

Mathematics

2 answers:

Brums [2.3K]2 years ago

8 0

Answer:

AC = 2x - 13 Cm

BC = 3x + 4 Cm

AB = 36 Cm

AB = AC + BC

BC = AB - AC

= 36 - (2x - 13)

= 36 - 2x + 13

= 49 - 2x

but, BC = 3x + 4

so equating both the equation we get

3x + 4 = 49 - 2x

3x + 2x = 49 + 4

5x = 53

x = 53/5

x = 10.6

BC = 49- 10.6*2

= 49- 21.2

= 27.8 CM

nirvana33 [79]2 years ago

6 0

Answer:

BC = 31 cm

Step-by-step explanation:

from the diagram

AC + CB = AB ( substitute values )

2x - 13 + 3x + 4 = 36

5x - 9 = 36 ( add 9 to both sides )

5x = 45 ( divide both sides by 5 )

x = 9

then

BC = 3x + 4 = 3(9) + 4 = 27 + 4 = 31 cm

You might be interested in

6m + 15n- 12p/n for m = -3.5, n=4, and p=3

Alexus [3.1K]

Answer: B. 30

Step-by-step explanation:

First, you re-write the expression

6(-3.5) + 15(4) - 12(3/4)

Then multiply all the parts correctly.

-21 + 60 - 9

-21 + 60 = 39

-9

= 30

8 0

3 years ago

Read 2 more answers

Help I'll give you 100 points

Dvinal [7]

✏ Answer:

$y=-9$

Step-by-step explanation:

$2-\frac{1}{8}y=11+\frac{7}{8}y$

➠ Subtract 2 from both sides:-

 $2-\frac{1}{8}y-2=11+\frac{7}{8}y-2$

$-\frac{1}{8}y=\frac{7}{8}y+9$

➠ Subtract 7/8y from both sides:-

 $-\frac{1}{8}y-\frac{7}{8}y=\frac{7}{8}y+9-\frac{7}{8}y$

$-y=9$

➠ Divide both sides by -1:-

 $\frac{-y}{-1}=\frac{9}{-1}$

$y=-9$

OAmalOHopeO

✎--------------------------

7 0

2 years ago

Read 2 more answers

A box contains five ping-pong balls, each with a number written on it. One ball has a one painted on it, one ball has a four, tw

Temka [501]

Answer:

Step-by-step explanation:

Numbers on balls:

1, 4, 7, 7, 8

Try to find the sum of all numbers:

1+4+7+7+8 = 27

According to the rule of 3, any number is dividable by 3 if the sum of it's individual is divided by 3.

27 is dividable by 3, therefore any combination will result a number with a factor of three.

Prime number is the number that is only dividable by 1 and itself. Therefore, any combination using those numbers are not prime number.

So the probability is 0

4 0

3 years ago

Which is higher 214.7 or 214.275

Lostsunrise [7]

easy 214.7 because if it was rounded it would be 214.700 an this is way bigger than 214.275

8 0

3 years ago

Can someone help me with this question???

Softa [21]

Guys I got my amazon gift gift card for hdusvxdhhsgevd xhx xhs d

4 0

3 years ago