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3 years ago

Someone please help and correct me if im wrong and explain all of it if I am please!!:) 25pts

1 answer:

4 0

*Yes, B, C, and D are correct. -15, -10.5, and -7.5 are solutions to x<-7*........................... ...................................................................................................................................... *8y – 24 > –16............................................................................................................. 8y>8 ADD 24 to both sides ....................................................................................... y>1 so C. divide both sides by 8................................................................................. It is not A because the opposite of subtracting 24 is adding 24. So you add 24 to both sides to undo the subtraction. -16+24=8 Then you divide both sides by 8, which gives you y>1. I think you probably subtracted 24 from -16 instead of adding it.*......................................... ...................................................................................................................................... *I'm not sure what to make of the third one, is that a number line or...?*............................... ...................................................................................................................................... *- t/5 ≥15 ........................................................................................................................ -t ≥ 75 MULTIPLY both sides by 5.................................................................................... t ≤ -75 divide both sides by -1, and flip the sign, because when dividing an inequality by a negative number you must flip the sign.............................................................................. So A would be correct. .................................................................................................... I believe if you divided the 15 by 5 and didn't flip the sign you would get D.*......................... Also, sorry, my enter key isn't working right, so it's all scrunched together.

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Which equation can be used to find the volume of this solid 7in 11in 9in

Mariulka [41]

Answer:

The volume of the solid is either 346.5 in³ or 693 in³.

Step-by-step explanation:

The solid can either be a triangular prism or a rectangular cube.

Consider the solid as a triangular prism.

The volume of a triangular prism is:

$V=(\frac{B\times H}{2})\times L$

Here,

B = base

H = height

L = length

Let,

B = 7 in

H = 9 in

L = 11 in

Compute the volume of a triangular prism as follows:

$V=(\frac{B\times H}{2})\times L$

$=(\frac{7\times 9}{2})\times11\\\\=346.5\ \text{in}^{3}$

Thus, the volume of a triangular prism is 346.5 in³.

Consider the solid as a rectangular cube.

The volume of a rectangular cube is:

$V=L\times B\times H$

The values of L, B and H remains the same as above.

Compute the volume of a rectangular cube as follows:

$V=L\times B\times H$

$=11\times 7\times 9\\=693\ \text{in}^{3}$

Thus, the volume of a rectangular cube is 693 in³.

3 0

4 years ago

Multiply (x+3)(x-4) what is the middle term in the simplified product? x -x 3x -4x

Nesterboy [21]

Answer:

The answer is -x

Step-by-step explanation:

(x+3)(x-4)

x²-4x+3x-12

x²-x-12

7 0

3 years ago

Read 2 more answers

Round the number 502.6439 to the underlined place. The underlined number is 3

sergejj [24]

The 9 is higher than 5, so the 3 will round up to 4

502.644

3 0

4 years ago

Determine whether the following statements are true and give an explanation or counterexample.

Furkat [3]

Answer:

A) When using the shell method, the axis of the cylindrical shells is parallel to the axis of revolution. True.

The Shell method is a technique used to find the volume of a solid of revolution. Here, we take thin shells with axis coinciding with the axis about which the region whose volume is to be found, is revolved.

B) If a region is revolved about the y-axis, then the shell method must be used. False.

This method can be used with any axis of rotation.

C) If a region is revolved about the x-axis, then in principle it is possible to use the disk/washer method and integrate with respect to x or the shell method and integrate with respect to y. True.

The washer method uses thin disks with infinite width but the shell method uses thin concentric shells with infinite width about the axis of revolution. So, the statement is true.

5 0

3 years ago

PLEASE HELP FAST WHAT IS THE ANSWER FOR THIS QUESTION I WILL GVIE BRAINLIST AND EXTRA POINTS FOR CORRECT ANSWER THANKS!!

Sliva [168]

Answer:

f(2) = -3

Step-by-step explanation:

This is the answer because:

1) The question is basically asking what the y-cordinate is.

2) In order to find the y-cordinate, look at the graph and find where 2 is on the x-axis. Then, see wheree the y-coordinate is on the same line a the x-cordinate which is 2.

3) When you line up the cordinates, you can see that where x is 2, y is -3.

Therefore, the answer is -3.

Hope this helps! :D

7 0

3 years ago