All categories

3 years ago

What's the answer to this problem? 13-2(4m+8)+3m

Mathematics

2 answers:

meriva3 years ago

6 0

Distribute
13-8m-16+3m

Combine like terms
-8m+3m=-5m
13-16=-3

Final answer: The simplified form is -5m-3

murzikaleks [220]3 years ago

5 0

13 - 2(4m + 8) + 3m

Simplify.

13 + (-2 × 4m) + (-2 × 8) + 3m

Simplify.

13 + (-8m) + (-16) + 3m

Get rid of the parenthesis.

13 - 8m - 16 + 3m

Combine like terms.

(-8m + 3m) + (13 - 16)

Simplify.

-5m - 3

~Hope I helped!~

You might be interested in

Three of four numbers have a sum of 22. If the average of the four numbers is 8, what is the fourth number ?

KatRina [158]

X+y+z=22

(x+y+z+t)/4=8
subsitute
x+y+z=22
(22+t)/4=8
multiplly by 4
22+t=32
subtract 22
t=10

the fourth number is 10

3 0

2 years ago

The length of the hypotenuse of a right angled triangle exceeds the length of the base by 2cm and exceeds twice the length of th

insens350 [35]

Answer: a = 8; b = 15; c = 17

Step-by-step explanation:

c = b + 2 and c = 2a + 1

b = c − 2 and a = $\frac{c-1}{2}$

c² = b² + a²

$c^{2} = (c-2)^{2} + \frac{c-1}{2}\\$

$c^{2}= \frac{4 (c-2)^{2}+(c - 1)^{2} }{4}$

$4c^{2}={4 (c^{2} + 4 -4c)+c ^{2} + 1-2c$

$4c^{2}={4 c^{2} + 16 -16c)+c ^{2} + 1-2c$

$c^{2}-18c+17=0$

$c(c -17)-1(c-17)=0$

$(c -1)(c-17)=0$

c = 1 or c = 17

If c = 1 then b = 1 - 2 = -1, that's not possible

So x = 17

b = 17 - 2 = 15

a = $\frac{17-1}{2} = 8$

Length sides of the triangle are 17 cm, 15 cm and 8 cm.

I saw some of this on a site but I want to make sure its correct so we're gonna apply the pythagorean theory and see if its correct.

$a^{2} + b^{2} = c^{2} \\8^{2} + 15^{2} = 17^{2} \\64 + 225 = 289\\289 = 289\\$

This shows that this is correct.

Hope this helped! Again, some of this was from a site, not from me.

3 0

2 years ago

Drag and drop question I need help on ASAP

klasskru [66]

[] Similar

-> The triangles are similar because they were "mirrored" by the...

[] SSS

-> ... by the SSS similarity theorem, the sides are...

[] Proportional

-> ... the sides are proportional.

[] AB/AC

-> Since the sides are proportional, dividing corresponding sides will leave us with the same number

[] For the last two I think I am missing some information as I do not have any numbers and know where they got 85 from.

Have a nice day!

I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

3 0

2 years ago

PLSSS HELP IMMEDIATELY!!!!!!! only answer if u know. i’ll be giving brainiest if u don’t leave a link.

podryga [215]

Answer:

1. isosceles because two of the sides are equal

2. right because there is a right angle

Step-by-step explanation:

7 0

2 years ago

If you have 12 circles an you shade in3/4 of them, how many circles do you shade?

aleksandrvk [35]

This is a formula if you need one. DON'T forget to cross-multiply

3/4 = x/12

4 0

3 years ago