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Bingel [31]
2 years ago
7

Help plzzz!! Marking most Brainly;)

Mathematics
1 answer:
kolezko [41]2 years ago
3 0

Answer:

D it

Step-by-step explanation:

We have two equations, A quadratic and a linear equation.

The domain of a linear equation and quadratic equation is all real numbers but since it dealing with time we must make sure the roots or x-intercepts is positive.

Looking at the quadratic equation, we can use the discramnt formula to see if all roots are positve.

b {}^{2} - 4ac

{ - 6}^{2}  - 4(1)(8.75)

36 - 35 = 1

The discramnt is greater than zero so there is two distinct real roots. So let check if they are positve

If you graph the equation, it intercepts at two positve roots so it is D

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I need help for this question
Dmitry_Shevchenko [17]

Answer:

<h2>$36.00</h2>

Step-by-step explanation:

$12.00 - the total cost of 4 of equally priced gloves

$12.00 : 4 = $3.00 - the cost of 1 glove

The cost per glove is increased by $1.00. Therefore new cost of 1 glove is

$3.00 + $1.00 = $4.00

The total cost of 9 of gloves at the new price:

9 × $4.00 = $36.00

6 0
3 years ago
What is the solution to the equation 6x+2=9x-1?<br> 0 0 0 0<br> X= 1
Stells [14]

Answer:

Step-by-step explanation:

6x+2=9x-1      x=1

6(1)+2=9(1)-1

6+2=9-1

8=8

Hope this helps :)

8 0
2 years ago
Read 2 more answers
Three consecutive odd integers are such that the sum of the first and second is 31 less than 3 times the third. Find the integer
Otrada [13]

1st:x

2nd x+2

3rd: x+4

(x)+(x+2) = 3(x+4)-31

distribute

2x+2 = 3x+12-31

2x+2 =3x-19

subtract 2x from each side

2 = x-19

add 19 to each side

21 =x

Answer: 21,23,25

3 0
2 years ago
10 points
marishachu [46]

Answer:

150+12x=630

Step-by-step explanation:

The x represents the amount of months and it is multiplied by 12 because each month costs 12$. 150 have to be paid up front and this added to the monthly fee is equal to 630$

3 0
3 years ago
Sprawdz, ktora liczba spelnia rownanie: -2x+7=-6x-5 . Ktora jest dobra odpowiedzia -3, 3 -2 czy 2 ? Prosze pomuszcie :'(
schepotkina [342]

Answer:

x= -3

Step-by-step explanation:

hello :

-2x+7=-6x-5

-2x+7+6x=-6x-5 +6x

4x+7=-5

4x+7-7=-5-7

4x= -12

x= -12/4

x= -3

7 0
2 years ago
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