help please I need my extra credit ​

Answer:

is that 14 or 1/4?

Step-by-step explanation:

Answer:

4/5

Step-by-step explanation:

There are four quadrants in a coordinate geometry.

The value of cos(A - B) is 84/85

The given parameters are:

[tex]\mathbf{cos(A) = \frac{15}{17}}[/tex]

[tex]\mathbf{cos(B) = \frac{4}{5}}[/tex]

Using trigonometry ratio, we have:

[tex]\mathbf{sin^2(A) + cos^2(A)= 1}[/tex]

Substitute [tex]\mathbf{cos(A) = \frac{15}{17}}[/tex]

[tex]\mathbf{sin^2(A) + (\frac {15}{17})^2 =1}[/tex]

Expand

[tex]\mathbf{sin^2(A) + \frac{225}{289} =1}[/tex]

Collect like terms

[tex]\mathbf{sin^2(A) =1 - \frac{225}{289}}[/tex]

Evaluate fraction

[tex]\mathbf{sin^2(A) =\frac{64}{289}}[/tex]

Take square roots of both sides

[tex]\mathbf{sin(A) =\pm\frac{8}{17}}[/tex]

The angle is in the fourth quadrant.

So, we have:

[tex]\mathbf{sin(A) =-\frac{8}{17}}[/tex]

Also,

Substitute [tex]\mathbf{cos(B) = \frac{4}{5}}[/tex] in [tex]\mathbf{sin^2(B) + cos^2(B)= 1}[/tex]

[tex]\mathbf{sin^2(B) + (\frac 45)^2= 1}[/tex]

[tex]\mathbf{sin^2(B) + \frac{16}{25}= 1}[/tex]

Collect like terms

[tex]\mathbf{sin^2(B) = 1 - \frac{16}{25}}[/tex]

Simplify fraction

[tex]\mathbf{sin^2(B) = \frac{9}{25}}[/tex]

Take square roots

[tex]\mathbf{sin(B) = \pm \frac{3}{5}}[/tex]

The angle is also in fourth quadrant

So, we have:

[tex]\mathbf{sin(B) = - \frac{3}{5}}[/tex]

To calculate cos(A - B), we make use of:

[tex]\mathbf{cos(A - B) = cos(A)cos(B) + sin(A)sin(B)}[/tex]

So, we have:

[tex]\mathbf{cos(A - B) = \frac{15}{17} \times \frac{4}{5} + \frac{-8}{17} \times \frac{-3}{5}}[/tex]

Evaluate

[tex]\mathbf{cos(A - B) = \frac{60}{85} + \frac{24}{85}}[/tex]

Take LCM

[tex]\mathbf{cos(A - B) = \frac{60+24}{85}}[/tex]

[tex]\mathbf{cos(A - B) = \frac{84}{85}}[/tex]

Hence, the value of cos(A - B) is 84/85

Read more about quadrants at:

https://brainly.com/question/7196054

Answer:

2x(x-4)

Step-by-step explanation:

2[tex]x^{2}[/tex]-8x= 2([tex]x^{2}[/tex]-4x)= 2x(x-4)

Answer:

[tex]\mathrm{Factor}\:2x^2-8x:\:2x\left(x-4\right)[/tex]

Step-by-step explanation:

Given the expression

[tex]2x^2-8x[/tex]

[tex]\mathrm{Apply\:exponent\:rule}:\quad \:a^{b+c}=a^ba^c[/tex]

[tex]x^2=xx[/tex]

so the expression becomes

[tex]2x^2-8x=2xx-8x[/tex]

               [tex]=2xx-2\cdot \:4x[/tex]

               [tex]=2x\left(x-4\right)[/tex]              ∵  [tex]\mathrm{Factor\:out\:common\:term\:}2x[/tex]

Therefore,

[tex]\mathrm{Factor}\:2x^2-8x:\:2x\left(x-4\right)[/tex]    

Answer:

25

Step-by-step explanation:

Hope this helps you!

Solve the Inequality for x

4x − 5 ≥ 7  

Move all terms not containing x to the right side of the inequality.

4x ≥ 12

Divide each term by 4 and simplify.

x ≥ 3

The result can be shown in multiple forms.

Inequality Form:

x ≥ 3

Interval Notation:

[3,∞)

Lots of love for you darling!~ <3

You graph it here

Answer:

Step-by-step explanation:

Alright, so this is basically just another equation, but then you see the greater than or equal to sign. How do I solve this? You may be asking. Well, treat it like an equation and worry about the sign later.

4x - 5 [tex]\geq[/tex] 7

Solve for x.

Add 5 to each side, then divide by 4 to each side.

4x [tex]\geq[/tex] 12

x [tex]\geq[/tex] 3  <----This is the answer.

Now for the graph. Look at the picture below:

That's what the graph should look like. Since it has a greater than or equal to sign, the line will be solid.

The graph is basically saying that anything that is greater than 3 (including 3) is counted, which is why that entire right side of 3 is shaded in.

Also, the way you should technically graph it is on a number line. So make a number line.

     -2   -1     0     1     2    3     4     5    6    7     8    9    10

<-----|-----|-----|-----|-----|-----€-----|-----|-----|-----|-----|-----|-----|----->

(Pretend € is the filled in dot).

So, the above number line is what it should look like when graphed. The € circle is filled in because we are including the 3.

#teamtrees #WAP (Water And Plant)

Answer:

-4/9 is a rational number

Step-by-step explanation:

Rational numbers are the numbers you can make by dividing one integer by another, so in other words a fraction.

Answer

4/9 belongs to rational numbers (D).

Explanation

(Lol moderator deleted everyone's answers so I'm gonna answer).

First I'll give you a definition of each choice.

Integers: Integers don't include decimals or fractions. Integers are positive and negative numbers. So basically it's this; (..., -3, -2, -1, 0, 1, 2, 3, ...). The '...' means numbers from infinity to the next number. I hope this makes sense Imao.

Whole numbers: whole numbers are integers, except they don't include negative numbers. Whole numbers include 0 (zero)... (0, 1, 2, 3, ...)

Natural numbers: natural numbers are whole numbers but they don't include 0 (zero)... (1, 2, 3, ...)

Rational numbers: rational numbers are numbers that can be expressed as a fraction. This includes repeating decimals such as 0.333 repeating. Rational numbers also include integers, because if you put the number over one, that is a fraction. Rational numbers are basically every number except for the radicals of some numbers (such as the square root of 3) and pi.

So now let's just see which one 4/9 is.

Well, 4/9 is not an integer, whole number, or natural number because it is a fraction.

But 4/9 can be expressed as a fraction (well, it already is one) meaning it is a rational number.

Answer:

Step-by-step explanation:

43

Answer:

950 km

Step-by-step explanation:

1 cm = 250 km

3.8 * 250  = 950

Answer:

950 km

Step-by-step explanation:

[tex]\frac{1}{250} = \frac{3.8}{x}[/tex]

(cross multiply)

250(3.8)= 950

(divide both sides by 1)

950/1=950

Answer:

x = 10

Step-by-step explanation:

Assuming the 2 figures are similar, then the ratios of corresponding sides are equal, that is

[tex]\frac{5}{x}[/tex] = [tex]\frac{4}{8}[/tex] ( cross- multiply )

4x = 40 ( divide both sides by 4 )

x = 10

Answer:

1/6x or just 1/6

Step-by-step explanation:

the equation is y = mx + b and 1/6x is in place m which is the slope

stream blueberry eyes by MAX AND SUGA periodTt

The slope is also known as the gradient and the rate of change of the line. The slope of the line for the equation y= 1/6x + 1/4 is 1/6

The slope is also known as the gradient and the rate of change of the line, The equation of aline in slope intercept form is expressed as:

y = mx + b

where

m is the slope

b is the y-intercept

Given the equation y = 1/6x + 1/4

Compare

mx = 1/6x

m = 1/6

Hence the slope of the line for the equation y= 1/6x + 1/4 is 1/6

Learn more on slope here: https://brainly.com/question/3493733

#SPJ2

Answer:

Yeah it's 10

Step-by-step explanation:

100/10=10

Answer:

the cafe served 6 regular coffees

Step-by-step explanation:

to get your answer you can multiply the percentage times the amount served in total

Total regular coffees served = 6.

A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100. Hence, the percentage means, a part per hundred. The word per cent means per 100. It is represented by the symbol “%”.

Given,

Total coffees served = 20

No. of regular coffees = 30% of 20

                                     = 30/100 × 20

No. of regular coffees = 6

Hence, Kelly's café served 6 regular coffees.

Learn more about percentage here:

https://brainly.com/question/29306119

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Answer: Last one

Step-by-step explanation:

Answer:

D

Mark me brainliest pls

Step-by-step explanation:

Answer:

I am nepali but i donot play freefire

Answer:

A, 1/10

Step-by-step explanation:

multiply 2/5 by 1/4 to get 2/20 which simplifies to 1/10

Answer:

Each ounce contains 20 calories.

Step-by-step explanation:

200/10 = 20/1

20/1 simplified is 20.

Answer:

20 calories per ounce

Step-by-step explanation:

if 200 calories is in 10 ounces of milk, then you can divide 200 by 10; 200 ÷10=20 calories per ounce

Answer:

$1.95

Step-by-step explanation:

10x+12y=23

5x+4y=10

10x+8y=20

4y=3

y=3/4

x=7/5

0.75+1.2=$1.95

Hope this helps :D

Answer:

6 hours

Step-by-step explanation:

6 * 1 5/8

6* 13/8=9.75

Answer:

6 hours

Step-by-step explanation:

Answer:

idkkk im trying to figure it out as quick as i cannn

Step-by-step explanation:

Answer:

=-616

Step-by-step explanation:

8(4-9x9)

bidmas

8(4-81)

8(-77)

Answer:

-616 is the answer for the question

Answer:

R = 2524 quarts/s

Step-by-step explanation:

Water flows through a pipe at a rate of 8600 cubic meters per hour.

We know that,

1 m³ = 1056.69 quarts

1 hour = 3600 s

Rate of flow of water = 8600 cubic meters per hour

[tex]R=8600\ \dfrac{m^3}{h}\\\\=8600\times \dfrac{1056.69\ \text{quarts}}{3600\ s}\\\\=2524.311\ \text{quarts/s}[/tex]

or

R = 2524 quarts/s

So, the rate of flow of water is 2524 quarts/s.

Answer:

x = -4

General Formulas and Concepts:

Pre-Algebra

Step-by-step explanation:

Step 1: Define equation

x + 13 = 9

Step 2: Solve for x

Step 3: Check

Plug in x into the original equation to verify it's a solution.

Here we see that 9 does indeed equal 9.

∴ x = -4 is a solution of the equation.

Answer:

x=-4

Step-by-step explanation:

So when solving a one-step algebraic equation you need to remember what you do to one side you have to do to the other side. In the problem x + 13 = 9 you need to subtract 13 from both sides to isolate x. So your problem should look like x = 9 - 13. Now all you have to do is solve 9 - 13 which is -4. So x = -4.

I hope this helped.

Answer:  The radius will still be 4 units.

Step-by-step explanation:

Since it is a rigid transformation, nothing of the shape will change excepts it location meaning that the radius of the shape will still stay the same.

The radius is 4 and after a reflection , the radius will still be 4.

Answer:

Total tickets = 70

Total cost = $550

Adult's ticket = $9

Child's ticket = $5

Difference = 9 - 5 = $4

Assume all 70 are child's tickets

5 x 70 = 350

But the total cost was 550

550 - 350 = $200

The $200 must have come from Adult's tickets, which has a difference of $4.

200 ÷ 4 = 50

So there are 50 adult's tickets.

70 - 50 = 20

And there are 20 child's tickets.

Answer:

30

Step-by-step explanation:

1:2 = 1 (x2)

15 x 2

30