Please help me understand how to work out these types of equations?
My teacher isn't doing a very good job at it right now.

Answer: -1/2

Step-by-step explanation:    Rise over run.

Answer:

(1.3^9)/(1.3^3)= Last Column: (1.3)^6

(-5/6)^2= First Column: -5^2/6^2

(-5/6)^1: Third Column: -5/6

(1.3)^0: Second Column: 1

Answer:

first row last column, second row first column, third row third column, last row second column

Step-by-step explanation:

first row last column: doing division w/ exponents means you have to subtract the exponents. 9-3=6 and since they have the same base, you don't have to do anything with it, so the answer is the last column.

second row first column: properties show that the square of -5/6 is equal to -5^2/6^2 or 5^2/-6^2. therefore, the answer is the first column.

third row third column: anything to the power of one is itself.

last row second column: anything to the power of zero is one.

Answ

Step-by-step explanation:

Answer:

5,7, bernie

Step-by-step explanation:

its right bc ik it is lol

Answer: the one in the top right corner

Step-by-step explanation:

so basically when you see 2/3x it can be translated to 3/2 and then you need to graph and see if it goes through 2,3 (i used a graphing calculator lol)

Answer:

a=1

Step-by-step explanation:

35a-29=14-8a

35a+8a=43a

43a-29=14

14+29=43

43a=43

A=1

Answer:

a=1

Step-by-step explanation:

first you distribute for 7(5a-4) so you get 35a - 28 - 1 =14 - 8a.

then you combine like terms so you get 35a - 29 =14 - 8a.

then you do it again which gives you 43a = 43.

divide both sides by 43 to get a by itself and you get a = 1

Answer:

A

Step-by-step explanation:

Sila put a wrong number in her calculator

Sila jogged 12 kilometers today and wants to know how far she traveled in feet. What error did Sila make while converting from kilometers to feet ? The correct answer is Option a) Start Fraction 12 kilometers Over 1 End Fraction times Start Fraction 0.62 miles Over 1 kilometer End Fraction times Start Fraction 5280 feet Over 1 mile End Fraction = 392,832 feet.

Sila's mistake can be identified in her conversion calculation. She first needs to convert kilometers to miles and then miles to feet. Let's break down the process step by step:

1. Kilometers to Miles:

Start by converting kilometers to miles.

There are 0.62 miles in 1 kilometer.

So, the first fraction is correct:

Start Fraction 12 kilometers Over 1 End Fraction times Start Fraction 0.62 miles Over 1 kilometer End Fraction.

2. Miles to Feet:

Next, convert miles to feet.

There are 5280 feet in 1 mile. Sila's calculation is incorrect at this step. The correct fraction to use here is Start Fraction 5280 feet Over 1 mile End Fraction.

Now, let's put it all together:

- Start Fraction 12 kilometers Over 1 End Fraction times Start Fraction 0.62 miles Over 1 kilometer End Fraction times Start Fraction 5280 feet Over 1 mile End Fraction

Multiply the fractions step by step:

- 12 kilometers * 0.62 miles/kilometer * 5280 feet/mile

- This simplifies to 392,832 feet.

So, Sila's error lies in not using the correct conversion factors for both kilometers to miles and miles to feet.

The correct conversion factors should be applied in sequence, leading to the final answer of 392,832 feet traveled.

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Complete Question

Sila jogged 12 kilometers today and wants to know how far she traveled in feet. What error did Sila make while converting from kilometers to feet?

a) Start Fraction 12 kilometers Over 1 End Fraction times Start Fraction 0.62 miles Over 1 kilometer End Fraction times Start Fraction 5280 feet Over 1 mile End Fraction = 392,832 feet

b) Sila put a wrong number in her calculator when multiplying the numerators.

c) Sila’s first fraction should be Start Fraction 1 kilometer Over 0.62 miles End Fraction.

d) Sila’s last fraction should be Start Fraction 1 mile Over 5280 feet End Fraction.

e) Sila forgot to divide by 0.62.

Answer:Min:4

              Q1:6

              Med:9.5

              Q3:12.5

              Max:17

Step-by-step explanation:

Answer:

y= -45x + 380 based on how many pages are left or

y= 45x based on how much he read

Step-by-step explanation:

Anyways, lets solve with the first formula

1. A week is seven days, so substitute 7 as x.

y= -45(7)+380

-45 (7) = -45 x 7 = -315

-315+380= 65

He has 65 pages left after the week which means he has not finished the book

2. The Formula

Use the formula y=mx+b

m is the slope or the rate of change. What is affecting the constant number of 380?

The 45 pages he is reading change how many pages he has left right?

That means the 45 that is changing b is the slope or m, but it is negative because its affecting how many pages he has left in a negative way.

b is the starting value

That is 380 pages left, which is what he starts off as the slope

Hence the equation is

y=-45x+380

Answer: y= -45x + 380 based on how many pages are left or

y= 45x based on how much he read

Step-by-step explanation:  1. A week is seven days, so substitute 7 as x.

y= -45(7)+380

-45 (7) = -45 x 7 = -315  2. The Formula

Use the formula y=mx+b

m is the slope or the rate of change. What is affecting the constant number of 380?

The 45 pages he is reading change how many pages he has left right?

That means the 45 that is changing b is the slope or m, but it is negative because it's affecting how many pages he has left negatively.

b is the starting value

That is 380 pages left, which is what he starts as the slope

Hence the equation is

y=-45x+380

Answer:

37.5

Step-by-step explanation:

cosФ = \(\frac{A}{H}\)

cos(33°35') = \(\frac{m}{45}\)

m = 45 × cos(33°35')

m = 37.5 (1d.p.)

Answer:

2x + 3xy + 2y2

Step-by-step explanation:

add the common variables

Answer:

525

Step-by-step explanation:

If it's just asking to find the average of heads then times it by 20 then just do 32+28+21+24 to get 105 and divide it by 4 to get 26.25 then times it by 20 since this is the average of 50 throws and it's asking for the average of 1,000 throws which is 525

Answer:

A.4:00

B.1-2 p.m.

C. ii iii

Step-by-step explanation:

Answer:

$32.25

Step-by-step explanation:

3 × $8.50 = $25.50, 5 × $1.25 = $6.25 × sales tax (8%) = $0.50, $6.25 + $25.50 + $0.50 = $32.25

Answer:

34.29

Step-by-step explanation:

I DID THIS IN CLASS!! trust me <3

Answer:

Only if show feet

Step-by-step explanation:

pls

1. Right angled triangle

2. Base

3. 90 Degree

4. The sum

5. The square

Answer:

Step-by-step explanation:

im assuming you solve for r.

-8r<-12

divided by -8 on both sides so you change signs

r>12/8

r> $ 3/2

Answer:

$r > 1.5$ or \(\frac{3}{2}\)$

Hope this helps!

Step-by-step explanation:

Hiding the dollar signs real quick:

-8r < -12

Divide both sides by -8: ( remember that when multiplying or dividing both sides by a negative number reverses the inequality )

-8 ÷ -8 × r < -12 ÷ -8  =  r > 1.5 or \(\frac{3}{2}\)

Answer:

Step-by-step explanation:

67 people in total

29 are girls

13 boys prefer to hike

17 prefer to swim

30 would rather canoe

The missing value are shown below.

A two-way frequency table is a table that displays the frequencies of two categorical variables. The table has rows that represent one variable and columns that represent the other variable.

                      Girls   |   Boys   |    Total |

Swimming         12    |               |      17    |

| Hiking                      |      13     |             |

| Canoeing                 |     30    |              |

| Total                29    |      38    |     67    |

To fill in the missing values:

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Answer: The answer is 3

Step-by-step explanation:

just do 236x3 next time. Have a good day!

Answer:

1st one 8/20

Step-by-step explanation:

Answer:

6cm, 6cm, 13cm

4cm, 10cm, 14cm

5cm, 11cm, 15cm

The function for the points are  y = -15x - 5

From the information given, we have that;

The points are;

(1/3,0) (-2 3/4,0) and (0,-5)

Using the point-slope form of a linear equation, we have;

y - y₁ = m(x - x₁)

Such that;

Using (1/3, 0) and (0, -5), we have that the slope is;

m = (0 - (-5))/0 -1/3)

expand the bracket

= 5 / (-1/3)

= -15

Now, take any of the given points and substitute the values

Using (1/3, 0), we get;

y - 0 = -15(x - 1/3).

y = -15x - 5.

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The function for the points solved by  (1/3,0) (-2 3/4,0) and (0,-5) solved by point slope form is \(a=-15b-5\)

We have given the points:

(1/3,0) (-2 3/4,0) and (0,-5)

Using the formula of linear equation

\(a-\)\(a_{1}\)\(=x[b-b_{1}]\)                                                          

Where we will consider (1/3,0) = \(a-a_{1}\) and (0,-5) = \(b-b_{1}\)

that is 1/3 = \(a\), 0 = \(a_{1}\) and

0 = \(b\), -5 = \(b_{1}\)

\(x\) refers to the slope of line (take any variable)

Now for finding the value of \(x\),

\(x=a-a_{1}/b-b_{1}\)

inserting the values,

\(x=[0-[-5]]/[0-1/3]\\x= -15\)

Substitute the value of \(x\) in the equation

\(a-0=-15[b-1/3]\)

By simplifying the equation, we get

\(a=-15b-5\)

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Answer: 4 miles are equal to 7040

Step-by-step explanation:

As we know that the ratio can be simplified and the answer can be obtained,

according to the question 5 miles are equal to 8800.

so, here we arrange the ratio in its format as follows

Step 1:

              Miles: Yards

                      5:  8800

Step 2: here we bring the ratio to its simplest form by dividing by 5 on both sides, that is:

5/5=1

8800/5= 1760

Now we get:

                         Miles: Yards

                                 1: 1760

Step 3: now as we need to find the answer for 4 miles we need to multiply with 4 on both sides, that is:

                         Miles: Yards

                                4: 7040

from here we get the answer as 4 milesequalso 7040 yards.

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Answer:

No it doesn't

Step-by-step explanation:

There's only 1 proportional quantity

Answer:

a. yes

Step-by-step explanation:

Answer:

y=4

y=7 (2,7)

y=10 (3,10)

y=-2 (-1,-2)

Answer:

Attached is the same chart. I inputted the values i the blank spaces

Answer:

Calculator is 2, Math book is 3, Ruler is 5, and Pencil is 4

Soultion #1 = 14

Solution #2 = -8

Step-by-step explanation:

2 x 3 = 6

3 + 5 = 8

4 x 5 = 20

2 + 4 = 6

Soultion #1 = 2 + 5 + 4 + 3 = x

7 + 4 + 3 = x

11 + 3 = x

11 + 3 = 14

Solution #2 = 3 - 4 - 2 - 5 = x

-1 - 2 - 5 = x

- 1 + (-2) - 5 = x

-3 - 5 = x

-3 - 5 = -8

Answer:

0.0277777778

Step-by-step explanation:

\(\frac{1}{6} ^{2}\)

\(\frac{1}{6}\)  × \(\frac{1}{6}\) = 0.0277777778

The answer is 0.02777777777

The sevens just keep going

Just put a line right beside the last 7 so show it's infinte

Answer:

a) x = 128 degrees

b) Angle APD is the arc angle, which is equal to the central angle x subtended by the arc.  Therefore angle APD = 128 degrees (and not 116 degrees)

Step-by-step explanation:

Given:

attached diagram

ABC is a straight line

Solution:

a) Find x

ABC is a straight line

angle ABD = supplement of CBD = 180-CBD = 180-116 = 64 degrees.

x is the central angle of the arc APD

so angle ABD is the inscribed angle which equals half of the arc angle =>

angle ABD = x/2 = 64 degrees

Solve for x

x/2 = 64

x = 2*64

x = 128 degrees

b.

Angle APD is the arc angle, which is equal to the central angle x subtended by the arc.  Therefore angle APD = 128 degrees (and not 116 degrees)

Answer: 14.13

Step-by-step explanation:

Your answer is 14.13

First, the formula for area of a semi circle is 3.14 x r^2 and divide by two.

To find the radius, we need to divide the diameter by two, which is 3.

So like

3.14 x 3^2/2

3.14 x 9/2

28.26/2

A=14.13

Answer:

14.13

Step-by-step explanation:

normal circle area equation = r^2*3.14

6/2=3

3*3*3.14

= 28.26

it's a semicircle so /2

=14.13