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Lina20 [59]
3 years ago
12

-1 /5 ÷ 1 /2 = Plz help answer this

Mathematics
2 answers:
Pani-rosa [81]3 years ago
4 0

-1 /5 ÷ 1 /2

-1/5 X 2/1

-2/5 or -0.4

Hope this helps! ;)

skelet666 [1.2K]3 years ago
4 0
Maybe it is correct answer

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How can you decide which operation to use to solve a problem?
almond37 [142]

Answer:

it you're asking for like an equation like "4x +3 = 15 " then you do the opposite of what the equation is doing. Basically undoing the problem to get back to the roots of it. like for the example i provided you would subtract 3 from both sides, because it was added originally. then you would divide both sides by 4 because originally you were multiplying.

7 0
3 years ago
What is the greatest whole number that rounds to 277300
saveliy_v [14]
The answer is 300,000 because you have to round the bigger number that is 2 and don't forget to go next door and round 7 and that tell if it going up one more. We round 277,300 7 is more so add one more to the 2 and that is 300,000.
5 0
4 years ago
An open box is made from a 20​-cm by 50​-cm piece of tin by cutting a square from each corner and folding up the edges. The area
kipiarov [429]

Answer:

Therefore,

The length of the sides of the​ squares is

x=7\ cm

Step-by-step explanation:

Let "x" be the length of Cut Square,

As the tin size(Dimension) is

20 cm × 50 cm

So the size(Dimension) of box will be

(20 - 2x) × (50 - 2x)

Length = 50 - 2x

Width = 20 - 2x

Area of base of box = 216 cm²

To Find:

x = ?

Solution:

Area of Rectangular field is given by

(Area\ of\ Rectangle(Box)) = Length\times Width

Substituting the values we get

216=(50-2x)(20-2x)

Applying Distributive property we get

216=1000-100x-40x+4x^{2}

4x^{2}-140x+784=0

Dividing throughout by 4 we get

x^{2}-35x+196=0

On Factorizing we get

x^{2}-28x-7x+196=0\\\\(x-7)(x-28)=0\\\\x-7=0\ or\ x-28=0\\\\x=7\ or\ x = 28

As x cannot be 28 because tin size is 20 cm × 50 cm i.e longer than 20

Therefore,

x=7\ cm

Therefore,

The length of the sides of the​ squares is

x=7\ cm

5 0
3 years ago
Read 2 more answers
How do you do the equation 3.25 divided by 5.2
valentina_108 [34]
3.25\ divided\ by\ 5.2= \frac{3.25}{5.2} =\frac{3.25\cdot 20}{5.2\cdot20} =\frac{65}{104} =\frac{65:13}{104:13} = \frac{5}{8} =0.625\\\\Ans.\ 0.625
5 0
4 years ago
Marley was asked to solve x2 - 4x + 9 = 0 using the Quadratic Formula. She found the discriminant first and decided she did not
saveliy_v [14]

We have been given Marley was asked to solve x^2-4x+9 = 0 using the Quadratic Formula. She found the discriminant first and decided she did not need to continue with the Quadratic Formula.

We are asked to determine whether Marley is correct or not.

We know when an equation is in form ax^2+bx+c=0, we can use discriminant to check for the real solutions of equation.

D=b^2-4(a)(c)

If D>0, then the equation will have two real solutions.

If D=0, then the equation will have one real solution.

If D, then the equation will have no real solutions.

Let us find discriminant.

a=1,b=-4\text { and }c=9

D=(-4)^2-4(1)(9)

D=16-36

D=-20

Since -20, therefore, the equation will have no real solutions, so Marley is correct.

8 0
3 years ago
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