3 years ago

Use elimination to solve the system of equations. 2x + 5y = 7 3x + 6y = 3

Mathematics

1 answer:

REY [17]3 years ago

5 0

Answer:

(-9,5) or x = -9 and y = 5

Step-by-step explanation:

Hope this helps!

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The cost c, to produce b baseball bats per day is modeled by the function c(b)=0.06b^2 - 7.2b + 390. What number of bats should

Finger [1]

You have two choices.
The minimum possible cost to operate your bat factory for a day is $390,
and there are two quantities of bats that both cost that much.

One possibility:
   Produce no bats at all per day. Zero. Nada. None.
   Cost = 0.06(0)² - 7.2(0) + 390 = $390 per day.

The other choice:
   Produce 120 bats per day.
   Cost = 0.06(120²) - 7.2(120) + 390
      = 0.06(14,400) - 7.2(120) + 390
= 864 - 864 + 390
= $390 per day.

If you produce any other number of bats in a day ... more than zero
but not 120 ... then it will cost you more than $390 to operate the factory
that day.

8 0

3 years ago

PLZ HELP ASAP RIGHT TRIANGLES

borishaifa [10]

The correct answer is: AB = 3.11

Explanation:
Since

$cos(\theta) = \frac{base}{hypotenuse}$ --- (1)
$\theta$ = 50°
base = 2

And hypotenuse = AB

Plug in the values in (1):
(1) => cos(50°) = 2/AB

=> AB = 2/0.643
=> AB = 3.11

6 0

4 years ago

Help on math? Thanks

Anuta_ua [19.1K]

C is the answer

Dmmssmsmsmxmxxmxm

5 0

3 years ago

20 points pleas help!!

Anna [14]

I think if I did it right it should be B

5 0

2 years ago