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2 years ago

The sum of twice a number and 6

Mathematics

1 answer:

Allushta [10]2 years ago

3 0

Answer:

The answer to your question is 4

The sum of twice a number and 6 is 4.

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Need to find Value of x

Pie

180 = 3x + 5x + 2x +5
180 = 10x + 5
175 = 10x
x = 17.5

180 is how many degrees in a triangle

4 0

2 years ago

Simplify . (1/c + 1/h)/(1/(c ^ 2) - 1/(r ^ 2))

Marrrta [24]

Answer:

$\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

Step-by-step explanation:

$\frac{\frac{1}{c}+\frac{1}{h}}{\frac{1}{c^2}-\frac{1}{r^2}}$

Combine $\frac{1}{c} + \frac{1}{h}$

$\frac{\frac{h+c}{ch}}{\frac{1}{c^2}-\frac{1}{r^2}}$

Combine the bottom, too.

$=\frac{\frac{h+c}{ch}}{\frac{r^2-c^2}{c^2r^2}}$

Apply the fraction rule

$=\frac{\left(h+c\right)c^2r^2}{ch\left(r^2-c^2\right)}$

Cancel

$=\frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

Therefore, $\frac{\left(\frac{1}{c}+\frac{1}{h}\right)}{\left(\frac{1}{\left(c^2\right)}-\frac{1}{\left(r^2\right)}\right)}:\quad \frac{\left(h+c\right)cr^2}{h\left(r^2-c^2\right)}$

5 0

2 years ago

How and what is the answer

lana [24]

C ) 131 is the answer

in the upside-vertex (not inverted) triangle, angle to your left hand side would be equal to x (as interior alternate angles) = 68

and the angle to the right would be 180-y= 180-117 = 163 (as linear angles)

so the angle at the vertex = 180 - (68 + 163) =49 (as angles in a triangle sum upto 180)

so the angle mz = 180 - 49 = 131 degrees (as linear pair of angles or angle in a straight line)

4 0

2 years ago

A building contractor cut a 3 1 4 foot piece off a 12 foot piece of wood. The remaining piece of wood was then cut into 7 equal

Alexus [3.1K]

(12-3.25)/7=1.25ft ( or 1' 3" )

5 0

2 years ago

Share £54 into the ratio 1:3

Marina86 [1]

Answer:

£13.5

£40.5

Step-by-step explanation:

Let the amount of shares be x and 3x

Therefore,

$x + 3x = 54 \\ \\ 4x = 54 \\ \\ x = \frac{54}{4} \\ \\ x = 13.5 \\ \\ 3x = 3 \times 13.5 = 40.5$

5 0

2 years ago