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aliina [53]
3 years ago
8

Eight times a number is the same as 30 less than 5 times the number. Find the number?

Mathematics
2 answers:
Bezzdna [24]3 years ago
8 0

Answer:

the number = -10

Step-by-step explanation:

1. to find the number, make it x. then, make an equation with it.

  8x = 5x - 30

2. then, you just solve the equation

  - subtract 5x from both sides

     3x = -30

  - divide by 3

     x = -10

hopefully that makes sense! :)

Charra [1.4K]3 years ago
6 0

Answer:

x = -10

Step-by-step explanation:

We just have to translate the problem correctly

>8 times a number is the same

this tells me that

8x = ...

>as 30 less than 5 times the number.

... = 5x - 30

Now set them equal to eachother

8x = 5x - 30

Now isolate the variable x

8x - 5x = 5x - 5x - 30\\3x = -30\\x = \frac{-30}{3} = -10

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Usama needs to read 6 novels each month.
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Answer:

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Step-by-step explanation:

N= novels

M= month

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6N × 13M= 78NM

78NM ÷ 1M

cancel M, therefore;

the number of novels Usama needs to read in 13 months is 78.

5 0
2 years ago
Read 2 more answers
7. The diagram shows a regular pentagon inscribed inside the rectangle. Find the values of x, y, and z.
Wewaii [24]
<span>regular pentagon sum of interior = (5 - 2) x 180 = 3 x 180 = 540
so
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180 - 108 = 72
y = 72/2 = 36

z = 180 - 90 - 36
z = 54

answer
x = 108, y = 36 and z = 54</span>
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3 years ago
Where are the parallelograms in this picture?
inysia [295]

Answer:

here the line A and H are parallel

7 0
2 years ago
Determine the coordinates of the point p on the line y=-x+6 such that p is equidistant from the points a(10,-10) and o(0,0) (tha
Katena32 [7]

Solution,

Let P =  ( x, -x + 6) = (x, 6 - x)

We want to solve this

( Distance from P to (0,0) )^2  = (Distance from P to (10, -10) )^2

x^2 + (6 - x)^2  =  [ ( x - 10)^2 + ( 6 - x + 10)^2

x^2 + x^2 - 12x + 36  =   x^2 - 20x + 100  + x^2 - 32x + 256     simplify

-12x + 36  =  -52x + 356

40x =  320

x = 8

And y = -(8) + 6  =  -2

So...P  =  ( 8, -2)

In mathematics, an equation is an equation that expresses two equations by joining them with an equal sign =. Equations in other languages ​​and the word their relatives can have slightly different meanings; for example, in French, an equation is defined as containing one or more variables, but in English, it is an equal sign.

A well-formed expression consisting of two combined equations is an equation, and a variable makes the equation true. The variable for which the equation must be solved is also called the unknown, and the value of the unknown that satisfies the equation is called the solution of the equation. There are two types of equations: identities and constraint equations. The ID applies to all values ​​of the variable. Constraint equations apply only to specific values ​​of variables

Learn more about Equations here: brainly.com/question/2972832

#SPJ4

6 0
2 years ago
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Lera25 [3.4K]

Answer:

Side side side

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Step-by-step explanation:

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