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3 years ago

Select all the rates that are unit rates.

Mathematics

1 answer:

andreyandreev [35.5K]3 years ago

6 0

Answer:

3/1

Step-by-step explanation:

All unit rates have a denominator of 1.

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Simplify expression: 3^{−(4a+1)} −3^{−(4a−1)} + 3^{−4a}

lyudmila [28]

$3^{-(4a+1)}-3^{-(4a-1)} + 3^{-4a} =3^{-4a-1 }-3^{- 4a+1 } + 3^{-4a}=\\ \\=3^{ -4a }*3^{-1}-3^{ - 4a }*3^1 + 3^{-4a} =3^{-4a}(3^{-1}-3+1)=3^{ -4a }*(\frac{1}{3}-2)=\\ \\=3^{ -4a }*(-1\frac{2}{3})=3^{ -4a }*(-\frac{5}{3})=3^{ -4a }*(-5)*\frac{1}{3} =-5 *3^{ -4a }*3^{-1}=\\ \\ =-5 *3^{ -4a +(-1)}=-5 *3^{ -4a -1}$

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3 years ago

Match the width with the given area and length of a rectangle.

torisob [31]

Answer:

5 cm A = 44cm; w = 8.8 cm

7.5 cm A = 48.75 cm2; w = 6.5 cm

5 cm A = 31.25; w = 6.25

9.25 cm A = 55.5 cm; w = 6 cm

Step-by-step explanation:

What you have to do to find the answer is to take the length which for the first problem is 5 cm and then multiply the 5 by each width until you get the area. Example; Length x Width = Area

Basically you use the length times all of the widths until you match up the area.

Hope I could help

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3 years ago

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dimaraw [331]

The length of ab is 24

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3 years ago

The city planning committee is composed of 12 women and l4 menWhat fraction of the committee is composed of men?

Mazyrski [523]

to solve you must dive 14 by 12 then simplify to the nearsest tenth.

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3 years ago

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Rectangle Q has an area of two square units. Thea drew a scaled version of rectangle Q and labeled it rectangle R. what scale fa

belka [17]

Answer:

It is given that Rectangle Q has an area of 2 square units.

Thea Drew a scaled version of Rectangle Q and marked it as R.

As you must keep in mind If we draw scaled copy of pre-image, then the two images i.e Pre-image and Image are similar.

As you have not written what is the scale factor of transformation

Suppose , Let the Scale factor of transformation= k

Rectangle Q = Pre -image, Rectangle R= Image

If, Pre-Image < Image , then scale factor is k >1.

But If, Pre-Image > Image , then Scale factor will be i.e lies between, 0<k<1.

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3 years ago

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