All categories

2 years ago

Solve, using linear combination.

Mathematics

1 answer:

joja [24]2 years ago

3 0

Answer: x= y= 2

Step-by-step explanation:

−

and clearly,

We substitute the value back in the equations to find y, and clearly, y =2.

You might be interested in

A projectile is fired into the air with an initial vertical velocity of 160 ft/sec from ground level. How many seconds later doe

djverab [1.8K]

The maximum height of the projectile is the maximum point that can be gotten from the projectile equation

The projectile reaches the maximum height after 5 seconds

The function is given as:

$\mathbf{h(t) = -16t^2 + 160t}$

Differentiate the function with respect to t

$\mathbf{h'(t) = -32t + 160}$

Set to 0

$\mathbf{h'(t) = -32t + 160 = 0}$

So, we have:

$\mathbf{-32t + 160 = 0}$

Collect like terms

$\mathbf{-32t =- 160 + 0}$

$\mathbf{-32t =- 160}$

Solve for t

$\mathbf{t = \frac{- 160}{-32}}$

$\mathbf{t = 5}$

Hence, the projectile reaches the maximum after 5 seconds

Read more about maximum values at:

brainly.com/question/6636648

8 0

2 years ago

Mega Movies hosted a film premiere on Friday night. They charged $9 for adults and $5 for children. One hundred fifty-nine adult

timofeeve [1]

Answer:

The answer is D. 12 children, 147 adults.

Step-by-step explanation:

I solved all of the possibilities and only D was the answer.

A. 16 children, 143 adults = $1,367

B. 6 children, 153 adults = $1,407

C. 9 children, 150 adults = $1,395

D. 12 children, 147 adults = $1,383

So, the answer is D.

Hope this helps! :)

6 0

2 years ago

Please help. I got an answer but I do not think it is correct.

AVprozaik [17]

Answer: 81

Step-by-step explanation:

(3^2)^2=81

Hope that helped

8 0

3 years ago

Why is it easy to calculate 5% of a number ? Give an Example

Alik [6]

5% of 1000 is 5 * 1000 / 100 = 5000 / 100 = 50.

5 0

3 years ago

Yelena needs to swim a total of 8 miles this

earnstyle [38]

Answer:

3 miles

Step-by-step explanation:

5 + m=8

Subtract 5 from each side

5-5 + m=8-5

m = 3

She needs to swim 3 more miles

7 0

3 years ago

Read 2 more answers