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2 years ago

7

In a used book store, there are some different mystery novels on a shelf. Suppose there are 64 different ways to buy these novel

s, including not buying any of them. How many mystery novels are there on the shelf?

1 answer:

den301095 [7]2 years ago

5 0

Is this a riddle or actual math?

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Help me answer this please:)

Dmitrij [34]

Answer:

A and B

Step-by-step explanation:

$\frac{7x+6}{2}\leq 3x+2 < ==multiply\ both\ sides\ by\ 2\\2(\frac{7x+6}{2}\leq 3x+2)\\\\7x+6\leq6x+4 < ==subtract\ -6x\ from\ both\ sides\ \\-6x \ \ -6x\\\\x+6\leq4 < ==subtract\ 6\ from\ both\ sides\\-6 \ \ \ -6\\\\x\leq-2 < ==answer\ should\ be\ anything\ less\ than\ or\ equal\ to\ -2$

Now, look at your answer choices, which options are less than or equal to -2?

x ≤ -2, Check your answers:

A. -3 ≤ -2?

This statement is correct (-3 is < -2)

B. -2 ≤ -2 <== our original answer

This statement is correct (-2 is = to -2)

C. -1 ≤ -2

This statement is incorrect (-1 is > -2, not ≤ -2)

D. 0 ≤ -2

This statement is incorrect (0 is > -2, not ≤ -2)

E. 1 < -2

This statement is incorrect (1 is > -2, not ≤ -2)

Therefore, the correct options are A and B

Hope this helps!

6 0

2 years ago

If r is seven more than the square of l, then r =

xenn [34]

I think its r=I+7 because that would be the equation

6 0

3 years ago

Use the information below to solve the problem Purchase price of article = $495 Down payment = $50 Number of payments = 36 True

Diano4ka-milaya [45]

Hi :)

Amount financed
495−50
=445
Total interest
(0.18×445×37)÷(2×12)
=123.49
Total paid
445+123.49
=568.49
Monthly payment
568.49÷36
=15.79

Hope it helps

5 0

2 years ago

Read 2 more answers

A cone-shape mountain of garden soil is dumped on a flat surface. If the diameter of the mountain is 12 cm and its volume is 480

sukhopar [10]

Answer:

Step-by-step explanation:

400cm

4 0

3 years ago

Read 2 more answers

Help!!!!!!!!!!!!!!!!!!!!!!!!

kozerog [31]

She did not multiply both sides of the equation by 2.

2x-6y =-2
<u>+ 2x+6y=3
</u><u /> 4x =1

x=1/4
y=5/12

3 0

3 years ago