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DanielleElmas [232]
3 years ago
7

Alex wanted to buy a book for 5.69 and three pens that each cost $.79. He had $10.00. Did he have enough money ?

Mathematics
1 answer:
zloy xaker [14]3 years ago
8 0
Yes, because all together the books and pens add up to $8.06
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This is going to be my 13th reason please help me
aleksley [76]

Answer:

The radius of these cylinders is approximately 1 foot.

Step-by-step explanation:

According to this graph, the volume of the cylinder is directly proportional to its height, that is, radius remains constant. The expression of direct proportionality:

V \propto h

V = k\cdot h (1)

Where:

V - Volume of the cylinder, in cubic feet.

h - Height of the cylinder, in feet.

k - Proportionality constant, in square feet.

Besides, the proportionality constant is described by this expression:

k = \pi \cdot R^{2} (2)

Where R is the radius of the cylinder, in feet.

If we know that h = 9\,ft and V = 28.26\,ft^{2}, then the radius of the cylinder is:

k = \frac{V}{h}

k = 3.14

R = \sqrt{\frac{k}{\pi} }

R \approx 1\,ft

The radius of these cylinders is approximately 1 foot.

3 0
3 years ago
A pyramid with a square base with dimensions 12 by 7 is shown. A cone is cut out of the center of the pyramid. The cone has a he
maks197457 [2]

Answer:

2 and 4

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4) 280 – 30π

4 0
3 years ago
Solve for x: 1/2 (10x+6)=-2x+10
pickupchik [31]

Answer: x = 1

Step-by-step explanation:

substitute 1 for x

1/2(10(1)+6) = -2(1)+10

1/2(10+6) = -2+10

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8 0
2 years ago
PLEASE HELP TRYING TO MAKE HONOR ROLL
maria [59]

Answer:

Hulian's age is 7.

Thomas's age is 22.

Step-by-step explanation:

Let Hulian = h

Let Thomas = t

Set the system of equation:

h = t - 15

h + t = 29

Plug in t - 15 for h in the second equation:

(t - 15) + t = 29

Simplify. Combine like terms:

2t - 15 = 29

Isolate the variable, t. Note the equal sign, what you do to one side, you do to the other. Do the opposite of PEMDAS. First, add 15 to both sides:

2t - 15 (+15) = 29 (+15)

2t = 44

Divide 2 from both sides:

(2t)/2 = (44)2

t = 44/2

t = 22

Plug in 22 for t in one of the equations:

h = t - 15

h = 22 - 15

h = 7

Hulian's age is 7.

Thomas's age is 22.

~

7 0
4 years ago
a point is plotted on a number line at -4.8. a second point is plotted at 6.3 what is the length of the line segment joining the
Afina-wow [57]

Answer:

11.1

Step-by-step explanation:

i just did the math and that came out

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