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ZanzabumX [31]
3 years ago
7

Solve for a 2.5+5a=3a+10.5

Mathematics
2 answers:
worty [1.4K]3 years ago
6 0

Answer:

The correct answer is A = 4

Step-by-step explanation:

2.5 + 5(4) = 3(4) + 10.5

22.5 = 22.5

Oksi-84 [34.3K]3 years ago
4 0

Answer:

a = 4

Step-by-step explanation:


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13 of 15
Slav-nsk [51]

Answer:

  1. (√30 - 1, 0)
  2. (-√30 - 1, 0)

Step-by-step explanation:

Making the equation of the parabola :

⇒ y = a(x - h)² + k

⇒ y = (x + 1)² - 17 - 13

⇒ y = (x + 1)² - 30

x-intercepts have y = 0 :

  • 0 = (x + 1)² - 30
  • (x + 1)² = 30

Taking the square root on each side :

  • √(x + 1)² = √30
  • x + 1 = ±√30
  • x = ±√30 - 1

The x-intercepts are :

  1. (√30 - 1, 0)
  2. (-√30 - 1, 0)
7 0
1 year ago
What is the rate of change between (-8,- 8) and (0,8)
iren [92.7K]

{ \qquad\qquad\huge\underline{{\sf Answer}}}

We need to find thr rate of change (slope) of the line joining these two points ~

\qquad \sf  \dashrightarrow \: m =   \dfrac{rise}{run}

\qquad \sf  \dashrightarrow \: m =  \cfrac{8 - ( - 8)}{0 - ( - 8)}

\qquad \sf  \dashrightarrow \: m =  \cfrac{8  +  8}{0  + 8}

\qquad \sf  \dashrightarrow \: m =  \cfrac{16}{8}

\qquad \sf  \dashrightarrow \: m = 2

Slope of the line (m) joining the two points is 2 ~

7 0
2 years ago
What are the solutions of the quadratic equation?
Oliga [24]

Answer:

d)X=4 or x=-2

Step-by-step explanation:

X²-2x=8

X²-2x-8=0

(x-4)(x+2)=0

X-4=0 or x+2=0

X=4 or x=-2

4 0
2 years ago
Read 2 more answers
What are two fractions between 3/5 and 4/5
Elza [17]
6/10 and 13/20, sorry i would explain this but its late, cheers.
Hope this Helps.
4 0
3 years ago
Crickets can jump with a vertical velocity of up to 14 ft/s. Which equation models the height of such a jump, in feet, after t s
Y_Kistochka [10]

Answer:

h = 147 - 16t^2.

Step-by-step explanation:

Use the following equation of motion

h = ut + 1/2 gt^2    where  h = height, u = initial velocity , g = acceleration due to gravity and t = the time.

So here we have:

h = 14t + 1/2 * -32 * t^2

h = 14t - 16t^2

8 0
3 years ago
Read 2 more answers
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