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anzhelika [568]
3 years ago
8

Beyonce is solving a system of equations:

Mathematics
1 answer:
aivan3 [116]3 years ago
8 0

Answer:

x=5, y=4. (5, 4).

Step-by-step explanation:

2x-3y=-2

4x+y=24

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

-2(2x-3y)=-2(-2)

4x+y=24

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

-4x+6y=4

4x+y=24

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

7y=28

y=28/7

y=4

4x+4=24

4x=24-4

4x=20

x=20/4

x=5

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Logarithms:
WITCHER [35]

Answer:

  • A) k = 18.75
  • B) R(0.8) = 161419
  • C) R(0.3) = 275

Step-by-step explanation:

<u>Given expression</u>

  • R(x) = 6*e^(kx)

A) <u>Given</u>

  • x = 0.04
  • R = 10

<u>Solving for k</u>

  • 10 = 6*e^(0.04k)
  • e^(0.04k) = 10/6
  • ln (e^0.04k) = ln (1.6666)
  • 0.04k = 0.51
  • k = 0.51/0.04
  • k = 12.75

B) <u>Given</u>

  • x = 0.8
  • R= ?

<u>The value of R(0.8) is:</u>

  • R(0.8) =
  • 6*e^(0.8*12.75) =
  • 6*e^(10.2) =
  • 161419  rounded

C) <u>Given</u>

  • x = 0.3
  • R = ?

<u>The value of R(0.3) is:</u>

  • R(0.3) =
  • 6*e^(0.3*12.75) =
  • 6*e^(3.825) =
  • 275 rounded
4 0
3 years ago
What is 90 divided by 5 in distributive property
zaharov [31]
18 is the answer //////////////////

3 0
4 years ago
Read 2 more answers
WILL GIVE BRAINLIEST..... NEED HELP FAST
Setler79 [48]

Answer:2516 pounds

Step-by-step explanation:

find the difference in gallons and the difference in the weights

46 - 14 = 32 gallons

2399 - 2191 = 208 pounds

 so 32 gallons of gas weighs 208 pounds

find weight per pound: 208 pounds / 32 gallons = 6.5 pounds per gallon

 round to 6.5 pounds per gallon

64 gallons - 46 gallons = 18 gallons

 18 gallons x 6.5 pounds per gallon = 117 pounds

2399 + 117 = 2516  weight of plane with 64 gallons

6 0
3 years ago
If F(x) = x-3, which of the following is the inverse of F(x)?
charle [14.2K]

Answer:

B

Step-by-step explanation:

let y = f(x) and rearrange making x the subject, that is

y = x - 3 ( add 3 to both sides )

y + 3 = x

change y back into terms of x, then

f^{-1}(x) = x + 3 → B

8 0
3 years ago
Read 2 more answers
Need help badly geometry question
labwork [276]

Answer:

Step-by-step explanation:

sin 67 = x/21

x = 21 sin 67

answer is A

7 0
3 years ago
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