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3 years ago

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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vfiekz [6]

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3 years ago

Identify the missing numbers below to show the result of multiplying the numbers.

saveliy_v [14]

(3.5x1016) = 3556
and
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As per question;
(3556)x(2222) = 10 a*b
By dividing both sides by "10"
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3 years ago

Read 2 more answers

6^x = 216 how to solve? 6 to the power of x equals 216.

Nataly_w [17]

$6 \cdot 6\cdot 6 = 6^3 = 216\\\\6^x = 6^3 = 216\\\\\\\boxed{\bf{x=3}}$

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3 years ago

What is the sum? 3 y / Y 2 + 7 y + 10 + 2 / y + 2

kap26 [50]

Answer:

5/(y+5)

Step-by-step explanation:

Perhaps you want the sum ...

$\dfrac{3y}{y^2+7y+10}+\dfrac{2}{y+2}\\\\=\dfrac{3y}{(y+2)(y+5)}+\dfrac{2(y+5)}{(y+2)(y+5)}=\dfrac{3y+2(y+5)}{(y+2)(y+5)}\\\\=\dfrac{5y+10}{(y+2)(y+5)}=\dfrac{5(y+2)}{(y+2)(y+5)}=\boxed{\dfrac{5}{y+5}}$

_____

<em>Comment on rational expressions</em>

When writing ratios in plain text, it is imperative to put parentheses around numerators and denominators. (If the numerator is a product only, then parentheses are optional.)

Your expression might be properly written as ...

3y/(y^2 +7y +10) +2/(y+2)

As you have written it, it simplifies to ...

3(y/y)2 +7y +10 +2/y +2 = 3·2 +7y +2/y +12

= 7y +2/y +18

Please note, too, the exponentiation symbol (^).

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3 years ago

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Ray Of Light [21]

Answer:

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Step-by-step explanation:

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