For every 12 girls in the 6th grade, there are 17 boys. If there are 60 girls in the 6th grade, how many

Mathematics

1 answer:

lianna [129]3 years ago

8 0

Answer:

There would be 55 boys

Step-by-step explanation:

12-17=5 60-5=55 I hope this help you.

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The Quadratic Formula, x equals negative b plus or minus the square root of b squared minus 4 times a times c, all over 2 times

DedPeter [7]

Answer:

The correct option is 2 .

Therefore ,the missing denominator of the solution. 4 plus or minus the square root of 2, all over is <u> 2 . </u>

$x=\dfrac{4\pm\sqrt{2}}{2}$

Step-by-step explanation:

For a Quadratic Equation ax² + bx + c = 0

By Formula Method we get

$x=\dfrac{-b\pm\sqrt{b^{2}-4ac}}{2a}$

So we have Quadratic Equation is 2x² - 8x + 7 = 0

On Comparing we get

$a=2\\b=-8\\c=7$

Substituting a , b, c values we get

$x=\dfrac{-(-8)\pm\sqrt{(-8)^{2}-4(2)(7)}}{2(2)}\\\\x=\dfrac{8\pm\sqrt{64-56}}{4}\\\\x=\dfrac{8\pm\sqrt{8}}{4}\\\\x=\dfrac{8\pm2\sqrt{2}}{4}\\\\x=2(\dfrac{4\pm\sqrt{2}}{4})\\\\x=\dfrac{4\pm\sqrt{2}}{2}$

Therefore ,the missing denominator of the solution. 4 plus or minus the square root of 2, all over is <u> 2 . </u>

7 0

3 years ago

How many sides does a regular polygon have if its exterior angles <br><br>A. 45<br>B. 30

ser-zykov [4K]

I) 4 $5^{0}$
The number of sides= $\frac{360}{45}$
The number of sides =8 sides

ii) 3 $0^{0}$
The number of sides= $\frac{360}{30}$
The number of sides= 12

3 0

3 years ago

Need help will give you the brainliest

beks73 [17]

The first one is correct

4 0

3 years ago

Read 2 more answers

5. Choose the best answer.

lyudmila [28]

The slope-intercept form: y = mx + b

So we need to "solve" given equation for y