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astra-53 [7]
3 years ago
5

Please help I’m not sure how to do this and I’m struggling

Mathematics
2 answers:
Alexeev081 [22]3 years ago
8 0

1.1     Pull out like factors :

  -8x - 2  =   -2 • (4x + 1)

2.1    Divide both sides by  -2

Remember to flip the inequality sign:

2.2    Divide both sides by  4  

     x+(1/4)  ≥ 0

Solve Basic Inequality :

2.3      Subtract  1/4  from both sides

           x ≥ -1/4

Nutka1998 [239]3 years ago
4 0

Answer:

The answer is D.

Step-by-step explanation:

Divide both sides by -8 to get x by itself.

-8x  ≤ 2

-8x/-8 = x

2/-8 = -0.25

What you're left with is x  ≤ -.25

Since you divided you have to switch the signs.

x ≥ -.25

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Divide a24 - a18 + a12 by a6.
AnnZ [28]
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3 years ago
What's the surface area ratio &amp; the volume ratio??<br><br> please help me ASAP!!
Ulleksa [173]

Answer:

Step-by-step explanation:

Volumes of two spheres A and B = 648 cm³ and 1029 cm³

Things to remember:

1). Scale factor of two objects = \frac{r_1}{r_2} [r_1 and r_2 are the radii of two circles]

2). Area scale factor = \frac{(r_1)^2}{(r_2)^2}

3). Volume scale factor = \frac{(r_1)^3}{(r_2)^3}

Volume scale factor Or Volume ratio = \frac{V_A}{V_B}

                         \frac{(r_1)^3}{(r_2)^3}= \frac{648}{1029}

                         \frac{r_1}{r_2}=\sqrt[3]{\frac{648}{1029} }

                         \frac{r_1}{r_2}=\frac{6(\sqrt[3]{3})}{7(\sqrt[3]{3})}

                        \frac{r_1}{r_2}=\frac{6}{7}

Therefore, scale factor = \frac{r_1}{r_2}=\frac{6}{7}

                                      ≈ 6 : 7

Area scale factor Or area ratio = (\frac{r_1}{r_2})^2=(\frac{6}{7})^2

                                                   = \frac{36}{49}

                                                   ≈ 36 : 49

Volume scale factor or Volume ratio = \frac{648}{1029}

                                                             = \frac{216}{343}

                                                             ≈ 216 : 343

4 0
3 years ago
Shaikha sold 10 packages of sugar cookies and 2 packages of oatmeal cookies for $56. Khalid sold 9 packages of sugar cookies and
ale4655 [162]

Answer:

The system that can be used is:

10x + 2y = 56

9x + 3y = 60

Step-by-step explanation:

We have that:

x is the price of a package of sugar cookies, y is the price of a package of oatmeal cookies.

Shaikha sold 10 packages of sugar cookies and 2 packages of oatmeal cookies for $56.

This means that:

10x + 2y = 56

Khalid sold 9 packages of sugar cookies and 3 packages of oatmeal cookies for $60.

This means that 9x + 3y = 60

System that can be used:

The system that can be used is:

10x + 2y = 56

9x + 3y = 60

4 0
3 years ago
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