7x² 10

what is the value of the expression when x=6​

Answer:

140 mile

Step-by-step explanation:

[tex]d_{1} +d_{2} =220\\2(2x-10+x)=220\\x=40\\d_{1}=2*(2*40-10)=140mile[/tex]

While x is the speed of the second train.

The speed of the first train is 50 miles per hour while the second train is at 60 miles per hour.

Speed is the ratio of total distance to total time taken. It is given by:

Speed = distance / time

Let a represent the speed of the first train. In two hours:

a = d₁/2

d₁ = 2a

a + 10 = d₂/2

d₂ = 2a + 20

d₁ + d₂ = 220

2a + 2a + 20 = 220

4a = 200

a = 50 miles per hour

The speed of the first train is 50 miles per hour while the second train is at 60 miles per hour.

Find out more on Speed at: https://brainly.com/question/4931057

Answer:

function A

Step-by-step explanation:

because that is the answer

Answer:

21/8 or 2 5/8

Step-by-step explanation:

Answer:

450 online tickets

200 gate tickets

Step-by-step explanation:

Let x = no. of online tickets

and y = no. of gate tickets

60x = total sales of online tickets

80y = total sales of gate tickets

    x + y = 650      and 60x + 80y = 43000

         y = 650 - x          60x + 80(650 - x) = 43000

                                     60x + 52000 - 80x = 43000

                                     -20x = -9000

                                           x = 450 online tickets

         y = 650 - 450 = 200 gate tickets

Answer:

the first box is 1/3

the second box is 27

Step-by-step explanation:

Answer:

thanks for 15 points

Step-by-step explanation:

Answer:

It be worth in the end : ($18,100 x 13.6%) x 4 = $ 9,849.4

Step-by-step explanation:

1 quarter = 3 months => 1 year = 4 quarters

Answer:

600 acres

Step-by-step explanation:

brainest vote pleasee

Answer:

k = -1

Step-by-step explanation:

6(5k-8)-20= 11(2k-3)+3k | Given

30k - 48 - 20 = 22k - 33 + 3k | Distribute

30k - 28 = 25k - 33 | Add numbers & combine like-terms

30k = 25k - 5 | Add 28 to both sides

5k = -5 | Subtract 25k from both sides

k = -1 | Divide -5 by 5

Answer:

Question, are you doing pythagorean theromen?

Answer:

57

Step-by-step explanation:

By the way there is another formula so I don't know if I am 100% correct. I added 63+60. Then when you get the answer minus it by 180. I hope it helped! :)

Answer:

x=0

Step-by-step explanation:

The answer is the first choice

A

Answer:

cccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc

Step-by-step explanation:

Answer:

c

Step-by-step explanation:

4000x.5=2000 which is the next table on the chart.

Answer:

Step-by-step explanation:

y=ar^t

f(x)=4000(1/2)^x

Answer:

$14

Step-by-step explanation:

70-56=14

Answer:

14%

Step-by-step explanation:

I guessed.

Answer:

Step-by-step explanation:

6(k + 2) + 1 = 13 (distribute 6 around the k+2)

6k + 12 + 1 = 13 (add 12 and 1)

6k + 13 = 13 (subtract 13 from both sides)

6k = 0 (divide by 6)

k = 0

Answer:

6( k + 2 ) + 1 = 13

6k + 12 + 1 = 13

6k + 13 = 13

6k = 0

k = 0/6

so it will 0

Answer:

d= 75*t

Step-by-step explanation:

Given data

We are given that the total distance = 270 miles

And that they have already traveled 42 miles

speed= 75mi/h

The remaining distance of the journey is = 270-42

= 228 miles

We know that

speed= distance/time

distance= speed*time

also

d= 75*t

Hence, we can estimate the distance they have traveled for any number of time t

Answer:

yes

Step-by-step explanation:

...........................

Answer:

y = 1

Step-by-step explanation:

6= 2(y+2)   Multiply 2*y and 2 *2

6 = 2y + 4    

6 - 4 = 2y

2 = 2y    -   Divide 2 and 2

y = 1

Answer:

yeah the person is right it is y=1

Step-by-step explanation:

Answer:

A(1,4) B(2,0) C(5,1)

Answer:

                       D?

Step-by-step explanation:

                that my opinion but if i'm wrong i apologize

Answer:

i'm pretty sure its c

Step-by-step explanation:

have a great day!!

Answer:

The quadratic equations and their solutions are;

9 ± √33 /4 = 2x² - 9x + 6.

4 ± √6 /2 = 2x² - 8x + 5.

9 ± √89 /4 = 2x² - 9x - 1.

4 ± √22 /2 = 2x² - 8x - 3.

Explanation:

Any quadratic equation of the form, ax² + bx + c = 0 can be solved using the formula x = -b ± √b² - 4ac / 2a. Here a, b, and c are the coefficients of the x², x, and the numeric term respectively.

We have to solve all of the five equations to be able to match the equations with their solutions.

2x² - 8x + 5, here a = 2, b = -8, c = 5.                                                  x = -b ± √b² - 4ac / 2a = -(-8) ± √(-8)² - 4(2)(5) / 2(2) = 8 ± √64 - 40/4.     24 can also be written as 4 × 6 and √4 = 2. So                                                                                     x = 8 ± 2√6 / 2×2= 4±√6/2.

2x² - 10x + 3, here a = 2, b = -10, c = 3.                                                   x =-b ± √b² - 4ac / 2a =-(-10) ± √(-10)² - 4(2)(3) / 2(4) = 10 ± √100 + 24/4. 124 can also be written as 4 × 31 and √4 = 2. So                                                                              x = 10 ± 2√31 / 2×2 = 5 ± √31 /2.

2x² - 8x - 3, here a = 2, b = -8, c = -3.                                                    x = -b ± √b² - 4ac / 2a = -(-8) ± √(-8)² - 4(2)(-3) / 2(2) = 8 ± √64 + 24/4.     88 can also be written as 4 × 22 and √4 = 2. So                                                                             x = 8 ± 2√22 / 2×2 = 4± √22/2.

2x² - 9x - 1, here a = 2, b = -9, c = -1.                                                     x = -b ± √b² - 4ac / 2a = -(-9) ± √(-9)² - 4(2)(-1) / 2(2) = 9 ± √81 + 8/4.                                          x = 9 ± √89 / 4.

2x² - 9x + 6, here a = 2, b = -9, c = 6.                                                    x = -b ± √b² - 4ac / 2a = -(-9) ± √(-9)² - 4(2)(6) / 2(2) = 9 ± √81 - 48/4.                                                                             x = 9 ± √33 / 4 .

Step-by-step explanation:

Answer: B

Step-by-step explanation:

Option A. Anglo-Chinese War.

Answer: a.anglo-chinese war in e2020

Step-by-step explanation:

Please give the full question.

Answer:

x>-1

Step-by-step explanation:

-1 is not greater than 1 so its not any of the right answers. So were left with the left answers. The arrow starts at -1 so it can't be 1 so its x>-1

Answer:

-9

Step-by-step explanation:

x+3= -6

×= -6-3

x= -9

mark me branliest

Answer:

emojissss  

Step-by-step explanation:

:3 =.= XD :7

Answer:

15

Step-by-step explanation:

42 - 27= 15

15 + 27 = 42

Therefore, 15 is the answer

Answer:

a. 8 1/4

Step-by-step explanation:

so 2*4= 8, that part is easy.

1/8*2= 2/8 because when you multiply whole numbers with fractions, you're basically multiplying it with a one as the denominator, so in this case, 1/8*2/1. which again equals 2/8. simplify 2/8 and you'll get 1/4.

put them together and you'll get 8 1/4

Answer:

A) 8 [tex]\frac{1}{4}[/tex]

Step-by-step explanation:

4 [tex]\frac{1}{8}[/tex] = 4.125

4.125×2=8.25=8 [tex]\frac{1}{4}[/tex]