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myrzilka [38]
3 years ago
10

3+4(10-8)? I have to simplify

Mathematics
2 answers:
alisha [4.7K]3 years ago
8 0
Hi so you start with PEMDAS wich means parenthesis exponents multiply divide add and subtract so that's the order. 
so we start with the order so its parenthesis so 10 minus 8 is to and are the question now looks like this: 3 + 4 2 
Now when are two numbers together and they don't have a sign we multiplied together.
it looks like 3+4x2
Now we multiply because we follow the rule.
now it looks like this: 3+8
Now 3 plus 8 is 11 so your answer is 11
Hope I had helped.
klasskru [66]3 years ago
7 0
The answer is 11.........
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When a number is decreased by 7.5%, the result is 61. What is the original number to the nearest tenth?
asambeis [7]

Answer: It's 65.9

Step-by-step explanation:

<h3>decreased by 7.5%</h3>

<h3>means 100% - 7.5% = 92.5%</h3>

<h3>92.5% * x = 61</h3>

<h3>x= 61 / 92.5%</h3>

<h3>x = 65.9459</h3>

<h3>to the nearest tenth :</h3>

<h3>original number is 65.9</h3><h3>Hope this helps have a awesome day/night❤️✨</h3>
4 0
3 years ago
M +3n= 7;n= -2, 0, 1
Rainbow [258]
Make sure that whatever you do to one side, you must also do to the other. For each of the given values of n, you must find the corresponding value of M.

M + 3n = 7

For n = -2:
M + 3(-2) = 7
M + (-6) = 7
M - 6 = 7
M - 6 + 6 = 7 + 6     | adding 6 to both sides
M = 13

For n = 0:
M + 3(0) = 7
M + 0 = 7
M = 7

For n = 1:
M + 3(1) = 7
M + 3 = 7
M + 3 - 3 = 7 - 3     | subtracting 3 from both sides
M = 4

Hope this helps! :)
3 0
3 years ago
Coral buys a house for £234 900 she pays a 10% deposit. Work out the amount of deposit paid by Carol.
Pavel [41]

The solution would be like this for this specific problem:

Given:

Total amount of the house = £234,900

 

<span>Find:

Amount of deposit paid = ?</span>

 

So first, we divide the t<span>otal amount of the house by the percent of deposit that Carol paid.

</span>= £234,900 / 10%

= £23,490

 

<span>Another way to solve this is by converting the percent of the deposit into a decimal. We do this by dividing the percentage amount by 100.

= 10% / 100% </span>

= 0.1

 

Next, we multiply the decimal equivalent of the percentage to the total amount of the house.

= £234,900 * 0.1

= £23,490

 

So, the amount of deposit that was paid by Carol is £<span>23,490.</span>

6 0
4 years ago
Cot^2 135-sin210+5cos^2 225
TiliK225 [7]
\cot135^o=\cot(90^o+45^o)=-\tg45^o=-1\\\\\sin210^o=\sin(180^o+30^o)=-\sin30^o=-\dfrac{1}{2}\\\\\cos225^o=\cos(180^o+45^o)=-\cos45^o=-\dfrac{\sqrt2}{2}

\cot^2135^o-\sin210^o+5\cos^2225^o=(-1)^2-\left(-\dfrac{1}{2}\right)+5\cdot\left(-\dfrac{\sqrt2}{2}\right)^2\\\\=1+\dfrac{1}{2}+5\cdot\dfrac{1}{2}=1\dfrac{1}{2}+2\dfrac{1}{2}=4

Answer: 4.
3 0
4 years ago
Which ordered pair is in the solution set of y≥13x+4 ?
Zarrin [17]

Answer:

first one

Step-by-step explanation:

3 0
3 years ago
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