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Bezzdna [24]
3 years ago
8

Help please thank you

Mathematics
1 answer:
Cerrena [4.2K]3 years ago
5 0

Answer:

1/5 first choice

Step-by-step explanation:

6+1+5+8+3+1=24

8+12+6+5+9+10+6+7+9+7+8+9+6+1+5+8+3+1=120

24/120 divide by 24 for numerator and denominator

=1/5

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Mason spent 15.85for 3 notebooks and 2 boxes of markers. the boxes of markers cost 3.95 each, and sales tax was 1.23. Mason also
Likurg_2 [28]
Multiply the amount of the notebooks which is 3, by the cost of the notebook, which is $15.85. that is $47.55. 

to find how much it costs with the coupon, do the notebook cost and subtract that by 0.75

$47.55 - 0.75 = $46.8
6 0
3 years ago
Read 2 more answers
Please help ASAP (a lot of points ) show your work please
allsm [11]

Answer :-

1. value of x is 18

8 0
3 years ago
What are the solutions of the equation x4 + 95x2 – 500 = 0? Use factoring to solve. x = plus-or-minus StartRoot 5 EndRoot and x
Oduvanchick [21]

Answer:

<em>* x ⇒ plus-or-minus StartRoot 5 EndRoot and ±10i *</em>

Step-by-step explanation:

Through factorization;

x^4 + 95x^2 – 500 = 0, ⇒ <em>u^2 ⇒ x^2</em>,

u^2 + 95u - 500 = 0, ⇒<em> factors of -500; -25, 20, -50 * 10, -2 * 250, -5 * 100...</em>

( u )^2 + ( - 5 + 100 ) + ( - 5 * 100 ) = 0,

( u - 5 )( u + 100 ) = 0,

<em>u = 5, and y = - 100</em>

Substitute u back into format x^2;

u = x^2, 5 = x^2, | x | = √5 ⇒ <em>x = - / + √5,</em>

u = x^2, - 100 = x^2, | x | = √- 100 ⇒ <em>x = - / + 10i</em>

<em>* Answer: x ⇒ plus-or-minus StartRoot 5 EndRoot and ±10i *</em>

7 0
3 years ago
If 6:2:8:x, then<br> a. 2x=14<br> b. 2x=48<br> c. 6x=10<br> d. 6x=16
Annette [7]

Answer:

D) 6x=16

Step-by-step explanation:

6 : 2 = 8 : x  

=> x = 8/(6/2 )  

=> x = 8/3  

=> 6x = (8/3) * 6 = 8 * 2 = 16  

3 0
3 years ago
What is the equation, in standard form, of a parabola that models the values in the table? x~ -1 0 2
Inessa05 [86]
<h2>Steps</h2>
  • Standard Form Equation: f(x) = ax² + bx + c

So firstly, since (0,5) is one of our values we can plug it into the standard form equation to solve for the c variable (since 0 will cancel out the a and b variable):

5=a*0^2+b*0+c\\5=c

Now we know that the value of c is 5. Next, plug in (-1,12) into the standard form equation and simplify (remember to also plug in 5 for the c variable):

12=a*(-1)^2+b*(-1)+5\\12=a-b+5\\7=a-b

Next, plug (2,15) into the standard form equation and simplify:

15=a*2^2+b*2+5\\15=4a+2b+5\\10=4a+2b\\5=2a+b

Now, with our last two simplified equations we will create a system of equations:

7=a-b\\5=2a+b

Now, I will be using the elimination method with this system. With the system, add up the equations together and you will get:

12=3a

From here, we can solve for the a variable. With it, just divide both sides by 3:

4=a

Now that we know the value of a, plug it into either equation to solve for the b variable:

7=4-b\\3=-b\\-3=b\\\\5=2(4)+b\\5=8+b\\-3=b

<h2>Answer</h2>

Putting all of our obtained values together, your final answer is:

f(x)=4x^2-3x+5

8 0
3 years ago
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