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Gekata [30.6K]
3 years ago
11

Can someone help me with this

Mathematics
2 answers:
Anvisha [2.4K]3 years ago
7 0

Answer:

D. \frac{{7}^{11} }{ {4}^{11} }

Step-by-step explanation:

( \frac{7}{4}) {}^{11} = \frac{7 {}^{11} }{4 {}^{11} }

Since we are multiplying an exponential number to a fraction the answer is going to be

\frac{7 {}^{11} }{4 {}^{11} }

Hope this helps ❤❤❤ ;)

ira [324]3 years ago
5 0

Answer:

D.  \frac{7^{11} }{4^{11} } \\

Step-by-step explanation:

Hello, I can help you with this

Let's remmber some propiertis of the fraction numbers and the potenciation

Let

a^{m} *  a^{n}=a^{m+n}\\(a^{m})^{n}=a^{m*n}\\(\frac{a}{b})^{m}=\frac{a^{m} }{b^{m}}

Step 1

All you have to do is identify and use the formula

let

(\frac{7}{4})^{11}\\ a=7\\b=4\\m=11\\so\\(\frac{7}{4})^{11}=\frac{7^{11} }{4^{11} } \\

so, the answer is D.

I hope it helps, have a nice day

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Points!!!Please help!! Show your work! Any problem helps! Thanks
Svetach [21]

Answer: <em>320ft², ~326.73cm², ~628.32mm², 186yd², ~615.75m², 96in²,</em>

<em>2376ft³</em>

Step-by-step explanation:

8) For a cube we will find the area of the three pairs of squares

First pair: 8ft * 6ft = 48ft²    Second pair: 8ft * 8ft = 64ft²

Third pair: 8ft * 6ft = 48ft²    (I think that says 6? Could say 5)

Multiply each pair by two and add them up:

48ft² * 2 = 96ft²      64ft² * 2 = 128ft²      48ft² * 2 = 96ft²

96ft² + 128ft² + 96ft² = <em>320ft²</em>

<em></em>

9) For a cylinder we will add the area of the lateral area and the two circles

Lateral Area: 8πcm *  9cm = 72πcm² or  ~226.19cm²

Area of <em>one</em> circle: π*4² = 16π  or  ~50.27cm²

Multiply that by 2 and we get   ~100.54cm²

Then we add up 100.54cm² and 226.19cm² to get the answer: <em>~326.73cm²</em>

<em></em>

10) For the cone we will use: A = πr(r + √(h² + r²))

A = 8πmm(8mm + √(15²mm + 8²mm))

A = 8πmm(8mm + 17mm)

A = 8πmm*25mm = <em>~628.32mm²</em>

<em></em>

11) I will start with the two triangles

One triangle: 1/2 * 6yd * 8yd = 24yd²

Two triangles = 48yd²

Next, the two rectangles in the back

Base rectangle: 8yd * 5yd = 40yd²

Back Triangle: 6yd * 8yd = 48yd²

Lastly, the top triangle

Top Triangle: 10yd * 5yd = 50yd²

Add them up to get: <em>186yd²</em>

<em></em>

12) For a sphere I will use: A = 4πr²

A = 4π(7m)²

A = 4π * 49m²

A = 196πm²  OR   <em>~615.75m²</em>

<em></em>

13) For a pyramid I will use: A = a² + 2a√((a²/4)+h²)

A =(6in)² + 2*(6in)*√((6²/4)+4²)

A = 36in² + 12in*√(9²+16in²)

A = 36in² + 12in * 5in

A = 36in² + 60in² = <em>96in²</em>

<em></em>

Extra Credit!

14) What is the volume of a pool with dimensions: 22ft long, 18ft wide, and 6 ft deep?

Strangely, the Extra Credit is much easier than the original problems but I'm not complaining!

Simply multiply each dimension and you get the volume of the pool, so:

22ft * 18ft * 6ft = <em>2376ft³</em>

<em></em>

I hope this helped!

6 0
2 years ago
The cost a dog walker for n hours is given by f(n) = 5 + 10n. Which statement is true?
Oksana_A [137]

Answer:

C. For each additional hour of service, the price of the dog walker increases by $10.

Step-by-step explanation:

Hope this helps!

:)

5 0
3 years ago
How to solve equations with the substitution method
Paul [167]

Answer:

In a system, the substitution method is one of the 3 main ways to solve a system and can be very efficient at times.

<u>Skills needed: Systems, Algebra</u>

Step-by-step explanation:

1) Let's say we are given two equations below:

  y=4x \\ 4x-5y=-32

  We can use substitution here by substituting in for y in the second equation.   This means we put in 4x for y in the 2nd equation so we only have x variables in the equation, allowing us to solve for x.

2) Solving it out:

1) 4x-5(4x)=-32 \\ 2) 4x-20x=-32 \\3) -16x=-32 \\4)x=2\\5)y=4x = 4(2) = 8 \\ 6)y=8

We essentially substitute in that value as seen in step 1. Steps 2 and 3 are just simplifying the left side and allowing for us to solve. Step 4 is where we divide by -16 on both sides to solve for x. Step 5 and 6 show us solving for y using the value for x. We get x=2,y=8

5 0
2 years ago
Read 2 more answers
The sum of one and the product of a number and two is thirteen
Zigmanuir [339]

Answer:

2x + 1=13

Step-by-step explanation:

the product of a number and 2 (2x)

sum of 1 (+1)

is 13 (=13)

6 0
3 years ago
State whether the given measurements determine zero, one, or two triangles.
Lady bird [3.3K]
I bet you're doing the Law of Sines right now. If you use the law of sines you find out that angle A is a 90 degree angle. There is only one triangle you can make with these measurements because if you have one angle of 30 and another of 90, the 3rd angle has to be a 60 degree angle. So it is a special right triangle, 30-60-90
8 0
3 years ago
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