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3 years ago

I need this answer quickly please

Mathematics

1 answer:

aleksklad [387]3 years ago

4 0

Answer:

x= 0 or x= 1

Step-by-step explanation:

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Find the volume of the cylinder in terms of pi

jeyben [28]

The answer is 127.16 pi m³, hope this helps.

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2 years ago

Solve this equation for x: 2x^2 + 12x - 7 = 0

zhannawk [14.2K]

Answer:

x=0.5355 or x=-6.5355

First step is to: Isolate the constant term by adding 7 to both sides

Step-by-step explanation:

We want to solve this equation: $2x^2 + 12x - 7 = 0$

On observation, the trinomial is not factorizable so we use the Completing the square method.

Step 1: Isolate the constant term by adding 7 to both sides

$2x^2 + 12x - 7+7 = 0+7\\2x^2 + 12x=7$

Step 2: Divide the equation all through by the coefficient of $x^2$ which is 2.

$x^2 + 6x=\frac{7}{2}$

Step 3: Divide the coefficient of x by 2, square it and add it to both sides.

Coefficient of x=6

Divided by 2=3

Square of 3= $3^2$

Therefore, we have:

$x^2 + 6x+3^2=\frac{7}{2}+3^2$

Step 4: Write the Left Hand side in the form $(x+k)^2$

$(x+3)^2=\frac{7}{2}+3^2\\(x+3)^2=12.5\\$

Step 5: Take the square root of both sides and solve for x

$x+3=\pm\sqrt{12.5}\\x=-3\pm \sqrt{12.5}\\x=-3+ \sqrt{12.5}, $ or $x= -3- \sqrt{12.5}\\$x=0.5355 or x=-6.5355$

6 0

3 years ago

Solve for x.<br> 4 + 2x = 10

aniked [119]

Answer:

The answer is 3

Hope this helps!

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3 years ago

What is the greatest whole number that rounds to 67,400? What is the least whole number?

WINSTONCH [101]

Greatest would be 100,000 (the nearest 100,000)
least 67,000 (the nearest thousand)

8 0

3 years ago

Please help . In the figure, ∆BAT ≅ ∆CAT. Which statement is not true by CPCTC?

masya89 [10]

Answer:

$\overline{CS}\cong\overline{ST}$

Step-by-step explanation:

The congruence statement for the triangles does not list point (or angle) S, so no claim about segments or angles involving S will be supported by the congruence statement.

The statement

$\Delta BAT\cong\Delta CAT$ tells you ...

$\angle TBA\cong\angle TCA\\\angle BAT\cong\angle CAT\\\angle ATB\cong\angle ATC\\\overline{BA}\cong\overline{CA}\\\overline{AT}\cong\overline{AT}\\\overline{TB}\cong\overline{TC}$

No other claims can be made using CPCTC. The statement among the answer choices that is not true by CPCTC is ...

$\boxed{\overline{CS}\cong\overline{ST}}$

3 0

3 years ago