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Kobotan [32]
3 years ago
14

Here’s another one free 50 points and brainiest, first come first serve! 4x+5-10+3x=57

Mathematics
2 answers:
GarryVolchara [31]3 years ago
3 0
So we have to simplify this equation:
4x+5-10+3x=57
Add like terms:
7x-5=57
Then add 5 to both sides:
7x=62
x=62/7
Rus_ich [418]3 years ago
3 0

Answer:

4x+5-10+3x=57

Simplifying

4x + 5 + -10 + 3x = 57

Reorder the terms:

5 + -10 + 4x + 3x = 57

Combine like terms: 5 + -10 = -5

-5 + 4x + 3x = 57

Combine like terms: 4x + 3x = 7x

-5 + 7x = 57

Solving

-5 + 7x = 57

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '5' to each side of the equation.

-5 + 5 + 7x = 57 + 5

Combine like terms: -5 + 5 = 0

0 + 7x = 57 + 5

7x = 57 + 5

Combine like terms: 57 + 5 = 62

7x = 62

Divide each side by '7'.

x = 8.857142857

Simplifying

x = 8.857142857

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Nesterboy [21]
Sec^2 x - 1 = tan^2x

Proof:
Sec^2x = 1+ tan^2x

1/cos^2x = 1 + sin^2x/cos^2x

<span>1/cos^2x - sin^2x/cos^2x = 1
</span>Using common denominator:
(1-sin^2x)/cos^2x = 1
sin^2x + cos^2 x = 1
cos^2 x = 1 - sin^2x
Substituting : 
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Left hand side = right hand side 
4 0
3 years ago
Read 2 more answers
Question 1
slamgirl [31]

Answer:

i) $500 at 5% simple interest for two years. Interest = 550 - 500 = $50

ii) $500 at 3% compounded monthly for 2 years.

    Interest = 530.88 - 500 = $30.88

Step-by-step explanation:

i) $500 at 5% simple interest for two years.

   Initial amount, P = $ 500

   Rate of interest, r = 0.05

   Time in years, t = 2

  Therefore Final amount A = P(1 + rt) = 500(1 + (0.05 \times 2) ) = $550

   Therefore Interest = 550 - 500 = $50

ii) $500 at 3% compounded monthly for 2 years

    Initial or Principal Amount, P  = $500

    Rate of interest, r =0.03

    number of conversions, m = 12

     Time in years, t = 3

  Therefore final amount,  A  = P(1 + \frac{r}{m}) ^{mt}  = 500( 1 + \frac{0.03}{12} )^{(12\times2)} = 500( 1 + \frac{0.03}{12} )^{24} = $530.88

Therefore Interest = 530.88 - 500 = $30.88

6 0
3 years ago
Help me with this thanks
vova2212 [387]
$1.71 is the answer
6 0
3 years ago
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I need help please and thank you
Simora [160]

Answer:

I also don't know the answer to this question

7 0
3 years ago
In the picture above, ∠3 and ∠7 are ______ <br> angles which are _____.
alexandr402 [8]

Answer:

Corresponding

Equal, Congruent

Step-by-step explanation:

7 0
3 years ago
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