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matrenka [14]
3 years ago
13

What are the possible values of x if (4c-5)^2= 49?

Mathematics
2 answers:
kykrilka [37]3 years ago
7 0

Answer:

c = 3                              c = -1/2

Step-by-step explanation:

(4c-5)^2= 49

Take the square root of each side

sqrt((4c-5)^2)= ±qrt(49)

4c-5 = ±7

Separate into two equations

4c-5 = 7           4c-5 = -7

Add 5 to each side

4c-5+5 = 7+5          4c-5+5 =-7+5

4c =12                         4c = -2

Divide by 4

4c/4 = 12/4                     4c/4 = -2/4

c = 3                              c = -1/2

Setler [38]3 years ago
3 0

Answer:

c = -½, 3

Step-by-step explanation:

(4c - 5)² = 49

4c - 5 = +/- 7

4c - 5 = 7

4c = 12

c = 3

4c - 5 = -7

4c = -2

c = -½

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Kisachek [45]

Answer: 2/3

Explanation: Assume that the number of smarties he picked is c.

Now, we are given that:

1- He picked 3 times as many cola bottles as smarties. This means that:

Number of cola bottles he picked = 3s

2- He picked twice as many smarties as marshmallows. This means that:

number of marshmallows he picked = 0.5s

Now to get the proportion o f cola bottles, we will divide the number of cola bottles by the total number of sweets as follows:

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3 years ago
Use Gauss-Jordan elimination to nd the general solution for the following system of linear equations: z2 + 3z3 ???? z4 = 0 ????z
nirvana33 [79]

Answer:

Step-by-step explanation:

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6 0
3 years ago
Evan bought a bag of Skittles, ate 13 of them, then distributed them evenly into 4 bowls. If there are 64 Skittles in each bowl,
Anna35 [415]

There were 269 skittles in the bag originally.

Step-by-step explanation:

Skittles ate by Evan = 13

No. of bowls = 4

No. of skittles in each bowl = 64

As the skittles are distributed evenly therefore,

Skittles in 4 bowls = 64*4

Skittles in 4 bowls = 256

Total skittles = Skittles in 4 bowls + skittles ate by Evan

Total skittles = 256 + 13

Total skittles = 269

There were 269 skittles in the bag originally.

Keywords: multiplication, addition

Learn more about addition at:

  • brainly.com/question/4459688
  • brainly.com/question/4460262

#LearnwithBrainly

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3 years ago
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SpyIntel [72]

Answer:

T(a) =(a+2)/11

Step-by-step explanation:

The inverse of the inverse is the function

To find the inverse let T^-1(a) be y

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Exchange y and a

a = 11y -2

Solve for y

Add 2 to each side

a+2 = 11y -2 +2

a+2 =11y

Divide each side by 11

(a+2)/11 =y

T(a) =(a+2)/11

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4 years ago
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