javier is shopping for school supplies . he is buying 3 of the same notebooks and 2 pens that cost $1.75 each. His total, before tax, is $12.47. which equation below could be used to determine the cost of each notebook.

A. 3(1.75)+2x=12.47

B.3x+2(1.75)=12.47

C. 3(12.47)+2(1.75)+x

D. 3(1.75)+2(12.47)=x

PLEASE HELP

Answer:

I know this isn't the answer you'd like, but there's a graphing app called ''desmos'' and you can enter the equation in there and it gives you your answer.

Step-by-step explanation:

Nishat has 6 cousins

Becky has twice as many cousins, so that would mean Becky has 12 cousins

David has twice as many cousins as Becky, so David has 24 cousins

I feel bad for David

Answer:

The domain of a composite function f(g(x)) f ( g ( x ) ) is the set of those inputs x in the domain of g for which g(x) is in the domain of f .

Answer:

87 divided by 36= 2.41

Step-by-step explanation:

Answer: 6y + y + 3 = 87

Step-by-step explanation:

Toni is 6y+3, there grandmother is y, the sum is all together. 6y + 3 + y, and rearrange it.

Answer:

[tex]\dfrac{1}{\sqrt{42}}(i+4j-5k)[/tex] and [tex]-\dfrac{1}{\sqrt{42}}(i+4j-5k)[/tex]

Step-by-step explanation:

The two vectors are

[tex]a=i+j+k[/tex]

[tex]b=5i+k[/tex]

Unit vector is given by

[tex]\dfrac{a\times b}{|a\times b|}[/tex]

[tex]a\times b=\begin{vmatrix} i & j & k\\1 & 1 & 1\\5 & 0 & 1\end{vmatrix}\\ =i(1-0)-j(1-5)+k(0-5)\\ =i+4j-5k[/tex]

[tex]|a\times b|=\sqrt{1^2+4^2+(-5)^2}=\pm\sqrt{42}[/tex]

[tex]\dfrac{a\times b}{|a\times b|}=\dfrac{i+4j-5k}{\sqrt{42}}\\\Rightarrow \dfrac{a\times b}{|a\times b|}=\pm\dfrac{1}{\sqrt{42}}(i+4j-5k)[/tex]

The two unit vectors that are orthogonal to both given vectors is [tex]\dfrac{1}{\sqrt{42}}(i+4j-5k)[/tex] and [tex]-\dfrac{1}{\sqrt{42}}(i+4j-5k)[/tex].

Answer:

Step-by-step explanation:

Area:=45

Answer:

3a^4

Step-by-step explanation:

Simplify the expression.

Step-by-step explanation

Answer:

Mode

Step-by-step explanation:

Mode

Find out more information about mode here:

https://brainly.com/question/11163338?referrer=searchResults

Answer:

Yes they have layers

Step-by-step explanation:

Ogre

Layers

like

onion

Answer:7

Step-by-step explanation:

This question is on the ukmt junior maths challenge which I'm doing now, out of the options given I got 7, because 2+4+6+5+(5×20)+(7×7)= 166, (then dividing that by the number of numbers to get the mean) so 166÷31= 5.354.....

Also the 3 has a recurring symbol above it

The 7 is times seven so uh yeah<3

The smallest possible value of 'q' is 7 and this can be determined by using the hit and trial method and mean formula.

Given :

The following steps can be used in order to determine the smallest possible value of q:

Step 1 - The formula of the mean can be used in order to determine the smallest possible value of q.

Step 2 - The mean of all the numbers is given by:

[tex]\rm \dfrac{2+4+6+5+5p+7q}{6+p+q}=5.3[/tex]

[tex]\rm \dfrac{21 + 5p + 7 q}{6+p+q} = 5.3[/tex]

Step 3 - So, by the hit and trial method, the value of q can be determined.

Therefore, the value of 'q' is 7.

For more information, refer to the link given below:

https://brainly.com/question/25277954

Answer:

it is a) the magician

Step-by-step explanation:

comment if its wrong mark me brainlest if it is right

Answer:

12 %

Step-by-step explanation:

3/25 = 0.12

0.12 x 100 = 12

Answer:

12%

Step-by-step explanation:

3/25=0.12

0.12 turnes into 12%

Answer: C and D.

Step-by-step explanation: The pictures show the work. So sorry about the delay -- my computer wasn't letting me type formulas, so I hand-wrote. If you have questions, let me know and I'd be happy to clarify, and if the pictures are sideways, use the rotate button at the top right.

Answer:

 13x^2- 6x - 9

Step-by-step explanation:

Please use the word "subtraction" or "less ... " or similar.

8x^2+x-10 less -5x^2+7x+1 is

  8X^2 + x - 10

-(-5x^2+7x+ 1)

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

 13x^2- 6x - 9

9514 1404 393

Answer:

  Exponential Decay

Step-by-step explanation:

The base of the exponential term is less than 1, so the function represents decay.

Answer:

Outside

Step-by-step explanation:

From what I see, your question might look like this a(b +/- c)

"a" would be on the outside.

Answer:

1.25miles per minute

Step-by-step explanation:

Answer:

Use the formula Speed=distance/ time. In this case you dont need to convert the time to hours so you would do 50/40 which equals 1.25 miles per minute. :)

Step-by-step explanation:

Answer:

A function is a process or a relation that associates each element x of a set X, the domain of the function, to a single element y of another set Y (possibly the same set), the codomain of the function.

Step-by-step explanation:

hope this helps

Answer:

$2.95 sales tax. $61.95

Step-by-step explanation:

Answer:

$61.95

Step-by-step explanation:

First find the amount of sales tax.

59 times .05= 2.95

Sales tax is $2.95, because 5% is written as .05 as a decimal. .05 times 59 gives us how much money 5% of $59 is.

Now add that to the original price!

59+2.95= 61.95

So our final price is $61.95

Hope this helps!

Answer:

domain: (-∞, 5)∪(5, ∞)

domain in interval form: {x|x ≠ 5}

Answer:

D)     [tex]\frac{1}{6}[/tex]

g¹(1) =  [tex]\frac{1}{6}[/tex]

The inverse of the  function   [tex]g(x) = \frac{x^{\frac{1}{3} }-1 }{2}[/tex]

Step-by-step explanation:

Step(i):-

Given that f(x) = (2x+1)³

 Let  y =  (2x+1)³

       [tex]y^{\frac{1}{3} } =2x+1[/tex]

      [tex]2x = y^{\frac{1}{3} } -1[/tex]

       [tex]x = \frac{y^{\frac{1}{3} }-1 }{2}[/tex]

Step(ii):-

y = f(x) ⇒  x = f⁻¹ (y)

  ⇒ [tex]f^{-1} (y) = \frac{y^{\frac{1}{3} }-1 }{2}[/tex]

     [tex]f^{-1} (x) = \frac{x^{\frac{1}{3} }-1 }{2}[/tex]

The inverse of the given function  

        [tex]g(x) = \frac{x^{\frac{1}{3} }-1 }{2}[/tex]

Differentiating equation (i) with respective to 'x', we get

      [tex]g^{l} (x) = \frac{1}{2} X \frac{1}{3} x^{\frac{1}{3} -1}[/tex]

     [tex]g^{l} (x) = \frac{1}{6} x^{\frac{-2}{3} }[/tex]

Final answer:-

Put x=1

  [tex]g^{l} (1) = \frac{1}{6} 1^{\frac{-2}{3} } = \frac{1}{6}[/tex]

Answer:

Step-by-step explanation:

Total outcomes: 2(5)(6)

= 60

Coins, heads, or tails are the practice of flinging a coin through into the air and checking what side shows whenever it lands, to choose between two possibilities, heads or tails, that are occasionally used for trying to settle conflicts between different parties.

Total outcomes: [tex]\bold{2 \times 5 \times 6 = 60}[/tex]

So the final answer is "60".

Learn more:

brainly.com/question/23567648

Answer:

its 15

Step-by-step explanation:

Answer:

(a) The constant of proportionality is 0.25

(b) 1 apple = $0.25

(c) $3 = 12 apples

Step-by-step explanation:

Given

[tex]c= 0.25n[/tex]

Solving (a): The constant of proportionality;

For an equation:

[tex]c=kn[/tex]

Where

k = constant of proportionality

By comparing: [tex]c=kn[/tex] to [tex]c= 0.25n[/tex]

[tex]k = 0.25[/tex]

Hence, the constant of proportionality is 0.25

Solving (b): What information does [tex]k = 0.25[/tex] gives.

It represents the unit rate.

So, it means that 1 apple costs $0.25

Solving (c): Number of apples for $3.

This means that [tex]c = 3[/tex]

Substitute 3 for c in [tex]c= 0.25n[/tex]

[tex]3 = 0.25n[/tex]

Make n the subject

[tex]n = \frac{3}{0.25}[/tex]

[tex]n = 12[/tex]