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Sonbull [250]
2 years ago
5

Trying to see what my answer would be

Mathematics
1 answer:
Oksanka [162]2 years ago
7 0

Answer:

B. 2^{-14}*5^{10}.

Step-by-step explanation:

Use the power of a power property.

(2^{-7}*5^{5} )^{2}

Multiply all the exponents in the parenthesis by 2.

(2^{-7}*5^{5} )^{2}=(2^{-14}*5^{10} )

The answer is B. 2^{-14}*5^{10}.

Hope this helps!

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7) Find the area of the shaded region:
aleksandr82 [10.1K]

Answer:

B

Step-by-step explanation:

The area of the biggest rectangle =

(9x - 2)(2x + 7) = 18 {x}^{2}  + 63x - 4x - 14  = 18 {x}^{2}   + 59x - 14

The area of the of the smallest rectangle inside=

3x(x + 12) = 3 {x }^{2}  + 36x

Then the area of the shaded region =

18 {x}^{2}  + 59x - 14 - (3 {x}^{2}   + 36x)    = 18 {x}^{2}  + 59x - 14 - 3 {x}^{2}  - 36x = 15 {x}^{2}  + 23x - 14

So, we choose B.

7 0
3 years ago
7w = 49 Can anybody help me with this one too?
lesantik [10]

Answer:

w=7.

Step-by-step explanation:

Divide 7 on both sides of the equation.

4 0
3 years ago
Read 2 more answers
Please help maths homework
kaheart [24]

Answer:

1). -4

2). -12

Step-by-step explanation:

Because algebra

8 0
3 years ago
Helppppppppppppppppppppppp
Vitek1552 [10]

Answer:

yes, it is a right angle triangle

Step-by-step explanation:

If it is a right angle triangle, then sq(14) + sq48) = 2500 = sq(50)

5 0
3 years ago
The length of a rectangle is 2 units more than the width. The area of the rectangle is 63 units. What is the length, in units, o
Keith_Richards [23]

Answer:

Length = 9units

Width = 7units

Step-by-step explanation:

It is said that the length is 2units more than the width

Assume that the width is x, then the length will be 2 + x

ie

Width = x

Length = 2 + x

Area of the rectangle = 63units

Area of rectangle = l * b

l - length of the rectangle

b - width of the rectangle

A = l * b

63 = (2 + x) * x

63 = ( 2 + x) x

63 = 2x + x^2

Let's rearrange it

x^2 + 2x - 63 = 0

Let's find the factor of 63

A factor that can be multiplied to give -63 and that can be added to give +2

Let's use -7 and +9

x^2 - 7x + 9x - 63 = 0

Separate with brackets

( x^2 - 7x) + ( 9x - 63) = 0

x( x - 7) + 9(x - 7) = 0

( x + 9)(x - 7) = 0

( x + 9) = 0

( x - 7) = 0

x + 9 = 0

x = -9

x - 7 = 0

x = 7

Note: the length of a rectangle can not be negative

So therefore,

x = 7

Length = 2 + x

= 2 + 7

= 9units

Width = x

= 7units

7 0
3 years ago
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