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3 years ago

Solve the following equation.

Mathematics

2 answers:

LuckyWell [14K]3 years ago

8 0

50x-1200=-5x+1550
+5x +1200 +5x +1200

55x=2750

divide 55 by each side

X=50

Ainat [17]3 years ago

7 0

Step-by-step explanation:

50x +5x=1550+1200

55x= 2750

x=50

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iVinArrow [24]

Answer:

Step-by-step explanation:

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7 0

4 years ago

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Find the smallest number by which 8788 must be multiplied so that the quotient is a perfect cube. Also, find the cube root of th

joja [24]

Answer:

Hi ,

Cube of a number :

_______________

For a given number x we define cube

of x = x × x × x , denoted by x^3.

A given Natural number is a perfect

Cube if it can be expressed as the

product of triplets of equal factors.

Now ,

Write given number as product of

prime .

8788 = 2 × 4394

= 2 × 2 × 2197

= 2 × 2 × 13 × 169

= 2 × 2 × 13 × 13 × 13

= 2 × 2 × ( 13 × 13 × 13 )

Here we have only triplet of equal

factors i.e 13

To make 8788 into perfect Cube we

have multiply with 2.

Now ,

2 × 8788 = ( 2 × 2 × 2 ) × ( 13 × 13 × 13 )

17576 = ( 2 × 13 )^3 = ( 26 )^3 perfect

Cube

I hope this will useful to you.

7 0

3 years ago

Find the distance between points M and N.<br>M= (3,-2)<br>N= (5,-6)

MaRussiya [10]

Answer:

Step-by-step explanation:

The formula for distance between points is $\sqrt{(x.2-x.1)^{2} +(y.2-y.1)^{2}$

So when you inserts the coordinates in this formula, it would be $\sqrt{(-2-3)^2+(-6-5)^2}$

$\sqrt{(-5)^2+(-11)^2}$

$\sqrt{25+121}$

$\sqrt{146}$

=12.08305

Usually, distance is round to whole number. So, it would be 12

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3 years ago

What is the retail price of the original price $60 markup : 15%

Nataly [62]

I think the original price is either $51 or $69

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3 years ago

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An exterior angle of a regular convex polygon is 40°. What is the number of sides of the polygon?

seraphim [82]

Answer:

option B

Step-by-step explanation:

Sum of interior angles of a polygon with n sides:

$= (n - 2 )\times 180$

$Therefore, Each \ interior \ angle = (\frac{n - 2}{n} )\times 180$

$Sum \ of \ one \ of \ the \ interior \ angle \ with \ its \ exterior \ angle \ is \ 180^\circ$

$[ \ because \ straight \ line \ angle = 180^\circ \ ]$

That is ,

$Exterior \ angle + Interior \ angle = 180^\circ\\\\40^ \circ + (\frac{n-2}{n}) \times 180 = 180^\circ\\\\40 n + 180n - 360 = 180n\\\\40n = 180n - 180n + 360 \\\\40n = 360 \\\\n = 9$

Sum of exterior angles of a regular polygon = 360

Given 1 exterior angle of the regular polygon is 40

Therefore ,

$n \times 40 = 360\\\\n = \frac{360}{40} \\\\n = 9$

8 0

3 years ago