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3 years ago

7

The monthly dues for a premium membership is $15 more than the cost of a standard membership. The premium membership cost $40 pe

r month. What is the cost of the standard membership?

1 answer:

77julia77 [94]3 years ago

4 0

40.00 for premium - 15.00 more than standard
40-15=35.00 for standard

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Solve e inequality -x<-29

mihalych1998 [28]

Answer:

x > 29

Step-by-step explanation:

-x < -29

~Divide -1 to both sides

x > 29

Best of Luck!

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3 years ago

You participate in a dance-a-thon fundraiser. After your parents pledge $15.50 and your neighbor pledges $8.75, you have $66.55.

Nana76 [90]

Answer:

15.50p+8.75n=66.55

Step-by-step explanation:

p=parents

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3 years ago

How do I solve this?<br><br> -6x-1+5x^2 = 8x^2<br><br> Thanks

max2010maxim [7]

Answer:

$\displaystyle x=\frac{-3+\sqrt{6}}{3}\text{ and } x=\frac{-3-\sqrt{6}}{3}$

Or, by approximating:

$x\approx-0.1835\text{ or } x\approx -1.8165$

Step-by-step explanation:

Let’s convert this to standard form. We have:

$-6x-1+5x^2=8x^2$

Subtract 5x² from both sides:

$-6x-1=3x^2$

And add 6x and 1 to both sides:

$0=3x^2+6x+1$

This is not factorable. So, we will need to use the quadratic formula.

The quadratic formula for a quadratic in standard form is given by:

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

In this case, a=3; b=6, and c=1.

Substitute appropriately:

$\displaystyle x=\frac{-6\pm\sqrt{6^2-4(3)(1)}}{2(3)}$

Simplify:

$\displaystyle x=\frac{-6\pm\sqrt{24}}{6}$

We can simplify the square root:

$\sqrt{24}=\sqrt{4}\cdot\sqrt{6}=2\sqrt{6}$

Hence:

$\displaystyle x=\frac{-6\pm2\sqrt{4}}{6}$

Simplify:

$\displaystyle x=\frac{-3\pm\sqrt{6}}{3}$

Hence, we will have two solutions:

$\displaystyle x=\frac{-3+\sqrt{6}}{3}\text{ and } x=\frac{-3-\sqrt{6}}{3}$

Approximating them, we can see that our solutions are approximately:

$x\approx-0.1835\text{ or } x\approx -1.8165$

7 0

3 years ago

Please help and please give explanation

Yuki888 [10]

Answer:

cylinder surface area = 201.06in²

surface area of cone = 56.56in.²

Step-by-step explanation:

cylinder surface area formula = 2πrh + 2πr²

refer the pic

cone surface area formula = πr ( r + √h² + r² )

refer the sec pic

surface area of the solid

= ( 201.06 + 56.56 ) in.²

= 257.62in.²

= 258in.²

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3 years ago

An electronics store sold 4% of the computers that were on sale.

serg [7]

Answer:

288

Step-by-step explanation:

We can use a proportion to solve this problem:

4 : 100 = 12 : x

x = (12 x 100)/4 = 300 (total computers)

300 - 12 = 288

8 0

3 years ago