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cricket20 [7]
3 years ago
6

7 1/2 ÷ (4 1/2 - 5 1/8)

Mathematics
1 answer:
Yanka [14]3 years ago
7 0

Answer:

-12

Step-by-step explanation:

7 1/2 ÷(4 1/2 - 5 1/8)

7 1/2 ÷ -5/8

7 1/2* -8/5

-12

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What is the value of x in this simplified expression? (Negative j) Superscript negative 7 = StartFraction 1 Over (negative j) Su
Viefleur [7K]

Answer:

The value of x is 7.

Step-by-step explanation:

We are given the following in the question:

-j^{-7} = \dfrac{1}{-j^{x}}

We have to simplify the above expression to calculate the value of x.

Exponential properties:

\dfrac{1}{x^a}=x^{-a}

Simplifying the expression, we get,

-j^{-7} = \dfrac{1}{-j^{x}}\\\\\Rightarrow -j^{-7}  = -j^{-x} \\\Rightarrow  x = 7

Thus, the value of x is 7.

3 0
4 years ago
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Corresponding angels are what
Ratling [72]

Answer:

It's when two Angels , on the same side of the transversal, that occupy corresponding positions, one interior and one exterior.

Step-by-step explanation:

<2 and <6 are corresponding Angels

<1 and <5 are corresponding Angels

<3 and <7 are corresponding Angels

<4 and <8 are corresponding Angels

5 0
3 years ago
2x+y+2z=7, 2x-y+2z=1, 5x+y+5z=13
vodomira [7]

Answer:

y = 3

x = 2 - z

Step-by-step explanation:

We have the system:

2*x+y+2*z=7

2*x-y+2*z=1

5*x+y+5*z=13

In the first and second equations we have the term (2*x + 2*z) = A

Then we can rewrite the first two equations as:

A + y = 7

A - y = 1

isolating A in the first equation, we get:

A = 1 + y

Now we replace this in the other equation:

(1 + y) + y = 7

1 + 2*y = 7

2*y = 6

y = 3.

then:

A + y = 7

A + 3 = 7

A = 7- 3 = 4

A = 2*x + 2*z  = 4.

Now let's go to the third equation:

(5*x + 5*z) + y = 13

we can rewrite the thing inside the parentheses as:

(5/2)*(2*x + 2*y) + y = 13

And we know that:

2*x + 2*z = 4

y = 3

then this can be written as:

(5/2)*(4) + 3 = 5*2 + 3 = 13

Then we can conclude that:

y = 3

2*z + 2*x = 4

2*(z + x) = 4

(z + x) = 4/2 = 2

x = 2 - z

Notice that the solution is not only a point, we have infinite solutions for this problem.

3 0
3 years ago
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jasenka [17]

Answer:Answer:c

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Step-by-step explanation:

the ratio between the lengths of the two legs of a 30-60-90 triangle

General ration of 30-6- 90 degrees triangle is

x : xsqrt(3) : 2x

When x=1 the ratio becomes 1 : 1 sqrt(3)

when x= 2sqrt(3) the ratio becomes

It becomes

Two sides of 30-60-90 triangle cannot be equal

so option c  and option D are not possible

sqrt(2) is also not possible  because we have sqrt(3) in general ratio

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2 years ago
All the answers and how each fits in each blank
lyudmila [28]

Answer:last 2 are quarts and miles

Step-by-step explanation:

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