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Nookie1986 [14]
2 years ago
11

Solve the equation. 2(5c – 7) = 1

Mathematics
2 answers:
Inga [223]2 years ago
5 0

2(5c – 7) = 1

Distribute the 2 into the numbers within the parenthesis

10c-14=1

Add 14 to both sides

10c=15

Divide 10 on both sides

Final Answer: c= 1 1/2 or 1.5

masha68 [24]2 years ago
4 0

<u><em>c=3/2 is the final answer. </em></u>First, you had to divide by two (2) from both sides of equation, and it gave us ⇒ \frac{2(5c-7)}{2}= \frac{1}{2}. And secondly, you had to simplify, and it gave us ⇒5c-7=\frac{1}{2}. Next, you had to add by seven (7) from both sides of equation, and it gave us ⇒5c-7+7=\frac{1}{2}+7. Therefore, you can also simplify, and it gave us ⇒5c=\frac{15}{2}. In fact, you divide by five (5) from both sides of equation, and it gave us ⇒\frac{5c}{5}= \frac{12}{2/5}. And finally, simplify it's should be the final answer is c=3/2 is the final answer. Hope this helps! And thank you for posting your question at here on brainly, and have a great day. -Charlie

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Answer:

B. (-9/2, -11/2)

Step-by-step explanation:

-12+3 / 2 = -9/2

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What is the volume of a right circular cylinder with a diameter of 46.25 cm and a height of 18.5 cm?
alexdok [17]
Radius = <span> <span> <span> 23.125 </span> </span> </span> cm
Cylinder Volume =  <span>π <span>• r² • height
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Cylinder Volume =  3.14 * 23.125^2 * 18.5

Cylinder Volume =  <span> <span> <span> 31,064.53515625 </span> </span> </span>

Cylinder Volume =  <span> <span> <span> 31,064.54 cubic centimeters


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7 0
3 years ago
Jenny opened a package of screws quickly and many of them spilled on the floor. She needs to organize the fasteners according to
hichkok12 [17]

We have to compare diameters and arrange them in order smallest to greatest

We can see units for option A and B are in square inches so they represents area. So first we will find diameter from area using formula

A = \pi r^{2}

so for choice (A) area is given as 4.375 \times 10^{7}. So plug this in A place in formula and then solve for radius r

4.375 \times 10^{7} = \pi r^{2}

\frac{4.375 \times 10^{7}}{\pi}   = \frac{\pi r^{2}}{\pi}

1.393 \times 10^{7} } =  r^{2}

\sqrt{1.393 \times 10^{7}}  = \sqrt{r^{2}}

3731.76 = r

So screw A will have
diameter = 2 \times r = 2 \times 3731.76 = 7463.52 inches

Similarly for choice (E) area is 1.428 \times 10^{1} = 14.28
so again plug in formula

A = \pi r^{2}

14.28 = \pi r^{2}

\frac{14.28}{\pi}   = \frac{\pi r^{2}}{\pi}

4.5477 =  r^{2}

\sqrt{4.5477}  = \sqrt{r^{2}}

2.13201 = r

So screw E will have
diameter = 2 \times r = 2 \times 2.13201 = 4.26402 inches

So diameters of all screws are as follows:

Screw A: 7463.52 inches
Screw B: 1.5 inches
Screw C: 1\frac{7}{8} =  \frac{1\times 8+7}{8} = \frac{15}{8} = 1.875 inches
Screw D: 0.25 inches
Screw E: 4.26402 inches

Comparing all numbers 7463.52, 1.5, 1.875, 0.25, 4.26402 we can see that smallest number is 0.25, then comes 1.5, then 1.875 and then 4.26402 and then 7463.52

So order from least to greatest will be screw D (0.25), B(1.5), C(1.875), E (4.26402), A (7463.52).

So thats the order D,B,C,E,A and the final answer

6 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=f%28x%29%3Dx%5E%7B4%7D%20-x%5E%7B3%7D%20-7x%5E%7B2%7D%20%2B10%2B5x" id="TexFormula1" title="f(
Slav-nsk [51]
Nice hfiebeiciysbwjwkdkcoc
7 0
3 years ago
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