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just olya [345]

3 years ago

5

The area of a rectangle is 4.9 square units. The length is 2.5 units and the width is y units. What is the value of y?

2 answers:

iris [78.8K]3 years ago

4 0

1.96, if you multiply that by the length, (which is 2.5) then you will get the area of 4.9 hope this helps

Nataliya [291]3 years ago

4 0

Answer:

Width of rectangle is:

1.96 units

Step-by-step explanation:

We know that area of rectangle is:

Area=Length×Width

The area of a rectangle is 4.9 square units.

The length is 2.5 units and the width is y units.

4.9=2.5×y

so, y=4.9/2.5

y=1.96

Hence, width of rectangle is:

1.96 units

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Solve the quadratic equation by completing the square. 6x2 + 4x - 5 = 0

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Answer:

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Step-by-step explanation:

Quadratic Equation given:

$6x^2 + 4x - 5 = 0$

Start dividing both sides by 6.

$\frac{6}{6} x^2 +\frac{4}{6} x - \frac{5}{6} = \frac{0}{6}$

$x^2 +\frac{2}{3} x - \frac{5}{6} = 0$

$x^2 +\frac{2}{3} x = \frac{5}{6}$

Once, $\left( \frac{2}{3} \cdot \frac{1}{2} \right)^2=\frac{1}{9}$

$x^2 +\frac{2}{3} x+\frac{1}{9} = \frac{5}{6}+\frac{1}{9}$

$\left(x+\frac{1}{3} \right)^2 = \frac{17}{18}}$

$x+\frac{1}{3} =\pm\sqrt{\frac{17}{18}} }$

Solving $\sqrt{\frac{17}{18}}$

$\sqrt{\frac{17(18)}{18(18)}}= \sqrt{\frac{306}{324}}=\frac{3\sqrt{34} }{18} =\frac{\sqrt{34} }{6}$

Then,

$x+\frac{1}{3} =\pm\frac{\sqrt{34} }{6}$

$x =-\frac{1}{3} \pm\frac{\sqrt{34} }{6}$

$x_{1}=-\frac{2+\sqrt{34}}{6}$

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MakcuM [25]

Answer:

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Step-by-step explanation:

The formula for the surface area of a cylinder is:

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And we're done!

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larisa86 [58]

Answer:

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3 years ago

which equations are equivalent to 3/4+m=-7/4 check all that apply m=10/4 m=-10/4 m=-5/2 11/4+m=-1/4 -5/4+m=-15/4 m+2=-0.5 Help f

Alecsey [184]

Answer:

The correct choices are; B,C,E, and F.

Step-by-step explanation:

The given equation is;

$\frac{3}{4}+m=-\frac{7}{4}$

We solve for m to obtain:

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We also solve the remaining equations to see which ones give the same result.

A: $m=\frac{10}{4} =2.5$

B: $m=-\frac{10}{4} =-2.5$

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D: $\frac{11}{4}+m=-\frac{1}{4}$

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E: $-\frac{5}{4}+m=-\frac{15}{4}$

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F: $m+2=-0.5$

$m=-0.5-2=-2.5$

The equivalent equations are; B,C,E, and F.

3 0

3 years ago

Read 2 more answers

Is 2x+10 = -2(x-5) equals

faust18 [17]

First distribute -2 to both x and -5

-2(x) = -2x
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False. 2x + 10 ≠ -2x + 10

False is your answer

hope this helps

3 0

3 years ago

Read 2 more answers