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skelet666 [1.2K]
3 years ago
12

When 2/3 is added to a certain number, the sum is 3 greater than twice the number.

Mathematics
1 answer:
galina1969 [7]3 years ago
3 0
3(2/3+n)=2n I believe
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IMPORTANT! WILL VOTE BRAINLIEST!!!
nikdorinn [45]

Answer:

The value of the ve = 9m/sec

Step-by-step explanation:


From the given formula, it can be conclude that this is evenly accelerated movement.

First I will rewrite given formula

vi = √ ve∧2 - 2ad   First we will square on both sides and get

vi∧2 = ve∧2 - 2ad Now we will add monom (+2ad) to both sides and get

vi∧2 + 2ad = ve∧2 -2ad + 2ad =>

ve∧2 = vi∧2 +2ad  Now we will rooted both sides and get

ve = √vi∧2 + 2ad  

Now we will replace given data vi=7m/sec, a=8m/s∧2 and d=2m in the last formula

ve= √7∧2 + 2*8*2 = √49+32 = √81 = 9

ve= 9m/sec

Good luck!!!



7 0
3 years ago
*cries* i need help :(
maria [59]

Answer:

choice B

Step-by-step explanation:

the war was fought in paterots homes because they had know were else to go

7 0
2 years ago
Solve the equation 5x-2x^2+1
Pani-rosa [81]

Answer:

Step-by-step explanation:

If you call "5x-2x^2+1" an "equation," then you must equate 5x-2x^2+1 to 0:

5x-2x^2+1 = 0

This is a quadratic equation.  Rearranging the terms in descending order by powers of x, we get:

-2x^2 + 5x + 1 = 0.  Here the coefficients are a = -2, b = 5 and c = 1.

Use the quadratic formula to solve for x:

First find the discriminant, b^2 - 4ac:  25 - 4(-2)(1) = 25 + 8 = 33

Because the discriminant is positive, the roots of this quadratic are real and unequal.

                                                             -b ± √(discriminant)

Applying the quadratic formula   x = --------------------------------

                                                                         2a

we get:

      -5 ± √33           -5 + √33

x = ----------------- = --------------------- and

           2(-2)                     -4

                                  -5 - √33

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

                                         -4

5 0
3 years ago
An electrician can wire on average 4.5 houses in a week. How many months will it take her to wire 55 houses if she wires the sam
Brrunno [24]
Just do 4.5 x4.5 and get 20.25 then divide that by 55 and get the answer of 2.7 months. Hope this helps
7 0
3 years ago
Hi can someone please answer this for me thanks xoxo will mark brainliest
Artemon [7]

Answer:

1.  3.6 times 10   -4      2. 800;0  the last one is 7.92 times 10 7

Step-by-step explanation:

.

5 0
2 years ago
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