pls don’t answer if you don’t know

Answer:

D

C

Step-by-step explanation:

Answer:

whats the rest?

Step-by-step explanation:

Answer:

Ok, let's suppose that the unknown amount is the number of books you buy in a library. (let's represent this unknown quantity with the variable X)

We know that each book costs $9.75, and we know that in total cost for the X books is $68.25

Then, how many books do you get?

We know that if one book costs  $9.75, then X books will cost X times $9.75

Then the total cost is:

C(X) = X* $9.75

And we know that the total cost was $68.25

Then to solve this, we need to solve the equation:

X* $9.75 = $68.25

X = $68.25/$9.75 = 7

The equation that can be used to represent the information is the cost of a book is $3, find the number of books when a customer pays $21.

To represent the scenario, the cost of a book is $3, find the number of books when a customer pays $21.

Therefore, the number of books will be:

3x = 21

x = 21/3

x = 7

In conclusion, the correct option is $7.

Learn more about equations on:

https://brainly.com/question/13763238

Answer:

The probability is 1/10.

Step-by-step explanation:

Without loss of generality, the first card is blue. Then choose a red one with probability 3/5, a blue one with probability 2/4=1/2, a red one with probability 2/3, and the last blue one with probability 1/2, followed by the last red one.

The result is 2/5⋅(1/2)^2=1/10.

OR

There are actually 6!/(3!3!)=720/36=20 ways, so the probability is 2/20=1/10.

Answer:

you got this I believe in u and your talents

Step-by-step explanation

JESUS LOVES YOU BRO

Answer:

5/16

Step-by-step explanation:

Answer:

x > 6

Step-by-step explanation:

Given

3(x + 4) - 5(x - 1) < 5 ← distribute and simplify left side

3x + 12 - 5x + 5 < 5

- 2x + 17 < 5 ( subtract 17 from both sides )

- 2x < - 12

Divide both sides by - 2, reversing the symbol as a result of dividing by a negative value.

x > 6

Answer:

ask someone other

Step-by-step explanation:

Answer:

25: 4

Step-by-step explanation:

4 times x equals 4x and 4 times 9 equals 36 so that means that the equation is 4x-36=4x+36 which -36 + 36 is nothing to it would be left off with 4x=4x so it would be infinite

Answer:

Please check the explanation.

Step-by-step explanation:

Given the equation

[tex]x^2\:-16x\:+\:39\:=\:0[/tex]

Subtract 39 from both sides

[tex]x^2-16x+39-39=0-39[/tex]

Simplify

[tex]x^2-16x=-39[/tex]

Rewrite in the form x² + 2ax + a²

solve for a, 2ax = -16x

2ax = -16x

divide both sides by 2a

2ax/2x = -16x/2x

a = -8

Add a² = (-8)² to both sides

[tex]x^2-16x+\left(-8\right)^2=-39+\left(-8\right)^2[/tex]

simplify

[tex]x^2-16x+\left(-8\right)^2=25[/tex]

Apply perfect square formula:  (a-b)² = a² - 2ab + b²

[tex]\left(x-8\right)^2=25[/tex]           ∵ [tex]x^2-16x+\left(-8\right)^2=\left(x-8\right)^2[/tex]

Thus,

[tex]\left(x-8\right)^2=25[/tex]

BONUS! EXTENDED SOLUTION!

We can further solve for x such as

[tex]\mathrm{For\:}f^2\left(x\right)=a\mathrm{\:the\:solutions\:are\:}f\left(x\right)=\sqrt{a},\:-\sqrt{a}[/tex]

solve

[tex]x-8=\sqrt{25}[/tex]

[tex]x-8=\sqrt{5^2}[/tex]

[tex]x-8=5[/tex]        

[tex]x=13[/tex]

similarly,

[tex]x-8=-\sqrt{25}[/tex]

[tex]x-8=-5[/tex]

[tex]x=3[/tex]

Therefore,

[tex]x=13,\:x=3[/tex]

Answer:

DF = 10 units

[tex]m\angle DFG = 28^\circ[/tex]

EG = 5.04

Step-by-step explanation:

Properties of Rhombus es

The image contains a rhombus with the following data (assume the center as point O):

DO = 5 units

GF = 5.6 units

[tex]m\angle FEO = 62^\circ[/tex]

4. Calculate DF

Applying property 4, diagonals bisect each other, thus the length of DF is double the length of DO, i.e. DF=2*5 = 10:

DF = 10 units

5. Calculate [tex]m\angle DFG[/tex]

Applying property 4 in triangle EFO, the center angle is 90°, thus angle EFO has a measure of 90°-62°=28°.

Applying property 5, this angle is half of the measure of angle EFG and angle DFG has the same measure of 28°.

[tex]m\angle DFG = 28^\circ[/tex]

6. FG is the hypotenuse of triangle OFG, thus:

[tex]OG^2=FG^2-OF^2[/tex]

[tex]OG^2=5.6^2-5^2[/tex]

[tex]OG^2=6.36[/tex]

[tex]OG=\sqrt{6.36}=2.52[/tex]

EG is double OG: OG=2*2.52=5.04

EG = 5.04

Answer:

I believe for the second one it's B, then for the third one it's D

Step-by-step explanation:

Oh also be careful w ur lunch # showing

Answer:

Concept: Algebraic Function

Answer:

-4m-3s-2

Step-by-step explanation:

Answer:

k = - 3.8

k = 3.4 - 7.2

k = -3.8

Answer:

k = -3.8

Step-by-step explanation:

Equation Solving

We are given the equation:

k + 7.2 = 3.4

To solve the equation we must make k the subject, that is, isolate the letter k at the left side of the equation.

Since the number 7.2 is adding with k, we subtract 7.2 on both sides:

k + 7.2 - 7.2 = 3.4 - 7.2

Simplifying the left side, the numbers cancel:

k = 3.4 - 7.2

Now calculate the subtraction 3.4-7.2=-3.8

k = -3.8

Answer:

a.y=6

b.-1/8

c.1/2

d.2800

e.-8

f.7.71

Step-by-step explanation:

Answer:

a^4b^2

Step-by-step explanation:

s represents one side, or a^2b

so if s^2=A and s=a^2b then A=(a^2b)^2 or a^4b^2

Answer:

sin30: 1/2   cos30: (sqrt3)/2    tan60: (sqrt3)

Step-by-step explanation:

Answer:

c = 70°

Step-by-step explanation:

The sum of the angles of a triangle is always 180°.

We can use the other two to solve for c:

57 + 53 + c = 180

110 + c = 180

c = 70

Therefore, angle c is 70°.

Answer: 14/45

Step-by-step explanation:

Answer:

(1, 0.5)

Step-by-step explanation:

From the graph attached,

x-values are representing the number of games downloaded,

y - values are representing the total cost.

Unit rate means rate of 1 game downloaded.

If we represent this in terms of coordinates,

x- value (game downloaded) = 1

y - value (price of one game download) = $0.5

Therefore, point (1, 0.5) will represent the unit rate.

Option (2) on the top row will be the answer.

Answer:

y= -1/3x + 1

Step-by-step explanation:

The slope is going down 1  and 3 to the right so its -1/3 and the y intercept is 1 so b=1

Hope it helps !

Answer: [tex]5x^2y^5[/tex]

Step-by-step explanation:

Given: Area of rectangle = [tex]35x^4y^{10}[/tex] square feet

Length of rectangle= [tex]7x^2y^5[/tex]

We know that,

Width of rectangle = [tex]\dfrac{\text{Area of rectangle}}{\text{Length}}[/tex]

Then,

Expression of width= [tex]\dfrac{35x^4y^{10}}{7x^2y^5}[/tex]

[tex]=\dfrac{5x^{4-2}y^{10-5}}{1}\ \ \ \ [\frac{x^m}{x^n}=x^{m=n}]\\\\=5x^2y^5[/tex]

Hence, the expression for width of the rectangle = [tex]5x^2y^5[/tex]

Answer:

A, B, and D

Step-by-step explanation:

No time to explain

Answer:

Step-by-step explanation:

a b c d

Answer: 1/7

Step-by-step explanation:

slope = y2-y1/x2-x1

(10 - 9) / (8-1) = 1/7

Answer: 390

Step-by-step explanation:

32 ÷ 6 = 5 1/3

2080 ÷ 5 1/3 = 390

Answer:

I tried solving it and I got an answer of 86c

Hope I helped!! :)

Step-by-step explanation:

Answer:

A, x>3

Step-by-step explanation:

You solve the equation as normal by crossing out both sides and getting what equals to x, but since you divided by a negative the sign flips and you are left with your answer. Hope this helps!

Answer:

fourth option

Step-by-step explanation:

Using the sine and cosine ratios in the right triangle and exact values

sin60° = [tex]\frac{\sqrt{3} }{2}[/tex] , cos60° = [tex]\frac{1}{2}[/tex] , then

sin60° = [tex]\frac{opposite}{hypotenuse}[/tex] = [tex]\frac{x}{4\sqrt{2} }[/tex] = [tex]\frac{\sqrt{3} }{2}[/tex] ( cross- multiply )

2x = 4[tex]\sqrt{6}[/tex] ( divide both sides by 2 )

x = 2[tex]\sqrt{6}[/tex]

---------------------------------------------------------

cos60° = [tex]\frac{adjacent}{hypotenuse}[/tex] = [tex]\frac{y}{4\sqrt{2} }[/tex] = [tex]\frac{1}{2}[/tex] ( cross- multiply )

2y = 4[tex]\sqrt{2}[/tex] ( divide both sides by 2 )

y = 2[tex]\sqrt{2}[/tex]

Answer:

1+1 = 1111111111111111111111