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3 years ago

5

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1 answer:

Naya [18.7K]3 years ago

3 0

Your answer would be x=3. You would start by combining like terms such as 5x and -7x and getting -2x. Then you would move the +5 to the other side by subtracting it from both sides. You would get -6=-2x. After that you would divide -2 on both sides and since they are both negatives, it would be a positive 3.

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Marco wants to set up 12 small turbines with 3 blades each.If 4 wind turbines blades cost $79.64,how much will all the blade cos

g100num [7]

Okay. So, there will be 12 small turbines, with 3 blades on each of them. 12 * 3 is 36. Marco will need 36 wind turbine blades total. 4 of them cost $79.64. 36/4 = 9. We would multiply 79.64 by 9 to get the cost for all blades. 79.64 * 9 is 716.76. The total cost for 36 blades would be $716.76.

6 0

3 years ago

Read 2 more answers

I stink at math how about some smart people check out my page and anwser some questions I give brainiest for correct

ziro4ka [17]

The 11% seems correct by my calculations but you forgot the decimal in it. The correct answer is .11% I believe

4 0

3 years ago

HELP ASAP PLEASE!!!!!!!!!!!!!

algol [13]

Option D

The prime factorization of 50 is $2 \times 5^2$

<em><u>Solution:</u></em>

Given that, we have to find prime factorization of 50

The prime factorization is any of the prime numbers that can be multiplied to give the original number

<em><u>Prime Factorization of 50</u></em>

Step 1: Start by dividing the number by the first prime number 2 and continue dividing by 2 until you get a decimal or remainder

$50 \div 2 = 25$

Then divide by 3, 5, 7, etc. until the only numbers left are prime numbers

$25 \div 5 = 5\\\\5 \div 5 = 1$

Step 2: Write the number as a product of prime numbers

$\text{ Prime factorization of 50 } = 2 \times 5 \times 5$

In exponential form,

$\text{Prime factorization of 50 } = 2 \times 5^2$

Thus option D is correct

5 0

3 years ago

How do I solve <br><br> x² - 10x-3=0

evablogger [386]

Answer:

x = 5±2√7

Step-by-step explanation:

This quadratic cannot be factorised via the factorisation method, so we use the quadratic formula :

x = $\frac{-b + \sqrt{b^{2} -4ac} }{2a}$ or x = $\frac{-b - \sqrt{b^{2} -4ac} }{2a}$

(The reason I did 2 equations is because brainliest does not allow me to do the ± in the equation insert thing )

x = $\frac{-(-10) + \sqrt{-10^{2} -4(1)(-3)} }{2(1)}$ or x = $\frac{-(-10) - \sqrt{-10^{2} -4(1)(-3)} }{2(1)}$

x = $\frac{10 + \sqrt{100+12} }{2}$ or x= $\frac{10 - \sqrt{100+12} }{2}$

x = $\frac{10 + {4\sqrt{7}} }{2}$ or x = $\frac{10 - {4\sqrt{7}} }{2}$

x = $5+2\sqrt{7}$ or x = $5 -2\sqrt{7}$

Hope this helped and brainliest please

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2 years ago

Sarah is training for a bike race . she rides her bikes 5 3/4 miles in 1/3 hour what is Sarah's rate in miles per hour

enot [183]

17 1/4 miles per hour

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3 years ago