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3 years ago

(10 points plus 5 more) Sorry, I forgot to add a picture lol xD Please help out! It will mean alot, thank you!

Mathematics

1 answer:

disa [49]3 years ago

7 0

Answer:

5x8 = 40

base x height = area

7x10 = 70

70-40 = 30

Step-by-step explanation:

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What is 10% of 66,743.22

kramer

Answer:

The answer is 6,674.322

Step-by-step explanation:

An easy way to solve this is to move the decimal point up by one space.

You could also multiply 66,743.22 by 0.1 and you would get the answer.

Hope this helps :)

4 0

3 years ago

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Randi has a party-sized sandwich that is 3/4 yard long. She will cut it into smaller sandwiches that are each 1/12 yard long. Wh

Elena L [17]

Answer:

The expression for number of sandwiches is $n=\frac{3}{4}\div\frac{1}{12}$

9 small sandwiches can be made.

Step-by-step explanation:

Given:

Length of party-sized sandwich (l) = 3/4 yard

Length of each small sandwich (s) = 1/12 yard

Now, let the total number of small sandwiches be 'n'.

Now, sum of all the lengths of small sandwiches will be equal to the length of the party-sized sandwiches.

Therefore, framing in equation form, we have:

Length of large sandwich = Length of small sandwich × Total number of small sandwiches.

$l=s\times n\\\\n=\dfrac{l}{s}$

Now, plug in the given values and solve for 'n'. This gives,

$n=\frac{3}{4}\div \frac{1}{12}\\\\n=\frac{3}{4}\times \frac{12}{1}\\\\n=\frac{36}{4}=9$

Therefore, 9 small sandwiches can be made.

3 0

3 years ago

There are 8 animals in the barn. Some are ducks and some are buffalo. There are 24 legs in all. How many of each animal are ther

faltersainse [42]

Answer: 4 buffalos and 20 chickens (i think)

Step-by-step explanation:

2x+4y= 8

Ducks have 2 legs and buffalos have 4.

x= ducks y=buffalos

2(24-y)+4y=24

48-2y+4y=40

2y=8

y=4

4 buffalos

x+y=24

x=24-y

x=24-4

x=20

20 ducks

3 0

3 years ago

Translate the percent word problem in a equation: If 5 is increased to 8, the increase is what percent of the original number?

-Dominant- [34]

If you increased 5 to 10, then I would have doubled the number 5 and this is a 100% increases.
If you increased 5 to 7.5, then this is 50% increase, because 50% of 5 is 2.5 and 5 + 2.5 = 7.5
If you increased 5 to 6, then this is a 20% increase,because 5 + 1 = 6 and 1 is 20% of 5
If you increased 5 to 7, then this is a 40% increase,because 5 increased by 2, 5 + 2 = 7, and 2/5 = 40%
If you increased 5 to x, then 5 was increased by x/5×100%
For example 5 to 9 is a4/5×100%=80% increase

So here 5 increases by 8, 5 + 3 = 8, thus the percentage increase is3/5×100%=0.006

8 0

3 years ago

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2y = 4x + 8 4y = 4x + 20

mars1129 [50]

<span>2y = 4x + 8 ------> y = 2x + 4
4y = 4x + 20 ------> y = x+5

2x+4 =x+5
x = 1
y=x+5=1+5=6

Check:
</span>2*6 = 4*1 + 8 , 12 =12
4*6 = 4*1 + 20, 24 =24<span>

x=1,y=6
(1,6)
</span>

6 0

3 years ago

Read 2 more answers