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Ghella [55]
3 years ago
15

I need help! please!

Mathematics
1 answer:
mamaluj [8]3 years ago
7 0

Answer:

-  \frac{1}{3}

Step-by-step explanation:

The only thing important in this question in the original equation is the slope, which is 3, the multiplyer for x. To find the opposite slope follow the steps below.

The first step is to make the original slope into a fraction.

\frac{3}{1}

Then flip the numerator and denominator.

\frac{1}{3}

Now multiply this value by -1.

\frac{1}{3}  \times ( - 1) =  -  \frac{1}{3}

There is the opposite slope of 3.

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How do I solve 2(12-9)^2-5x4
Bad White [126]

Answer:

-2

Step-by-step explanation:

brackets first

12 - 9 = 3

Then square it

3^2 = 9

Now multiply by 2

9*2 = 18

finally get - 5 * 4 = - 20

and put them both together

18 - 20 = - 2

8 0
3 years ago
There are 40 students in a class and 30% of
Andrej [43]

Answer:

12 people passed out of 40. thats a pretty bad teacher ._.

Step-by-step explanation:

30% of 40=12

3 0
3 years ago
What is 4\5 times -1\2
Natalija [7]

Answer:

- 2/5

Step-by-step explanation:

4/5 x -1/2=

    4 x-2= -4

    5 x 2= 10

     4÷2

    10÷2=−2/5

     =−2/5

<h2><u><em>hope it helps</em></u></h2>

8 0
4 years ago
You wake up with a fever! All you can find at the store is Aspirin, and the bottle says to take 162 mg. The bottle also says eac
svet-max [94.6K]

Answer:

You should take 2 tablets of Aspirin.

Six tablets is not the correct dosage.

You should get 4 tablets.

Step-by-step explanation:

You wake up with a fever! All you can find at the store is Aspirin, and the bottle says to take 162 mg. The bottle also says each tablet has 81 mg in each tablet. How many tablets should you take?

This can be solved by this following rule of three.

1 tablet - 81mg

x tablets - 162mg

81x = 162

x = \frac{162}{81}

x = 2

You should take 2 tablets of Aspirin.

The doctor orders 120 mg of medicine to be given twice a day. The nurse comes in with 6 tablets and tells you that there are 30 mg in each tablet. Is this the correct dosage?

We need to see how many mg are in 6 tablets. If there are 120mg in 6 tablets, this is the correct dosage. We verify this by the following rule of three:

1 tablet - 30mg

6 tablets - x mg

x = 30*6

x = 180mg.

In 6 tablets, there are 180mg. So, it is not the correct dosage.

If not, how many tablets should you get?

Knowing that each tablet has 30mg, in how many tablets are there 120mg?

1 tablet - 30 mg

x tablets - 120 mg

30x = 120

x = \frac{120}{30}

x = 4

You should get 4 tablets.

3 0
3 years ago
Find the area of both triangles rounded to the nearest tenth.
hoa [83]

Answer:

length x height / 2 then round to the nearest ten

Step-by-step explanation:

it's like working out the area for a square except halfing it

3 0
4 years ago
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