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aliina [53]
3 years ago
13

a number is multiplied by 8 and that product is added to 2. The sum is equal to the product of 2 and 25 . Find the number

Mathematics
1 answer:
pickupchik [31]3 years ago
8 0

Answer:

6

Step-by-step explanation:

So we have a number (let's call it x) and it was multiplied by 8 and added by 2. Therefore:

8x+2

And we are told that the sum is equal to the product of 2 and 25 (or 50). Thus:

8x+2=50

To find the number, we just need to find x. Thus, subtract 2 from both sides:

8x=48

Divide both sides by 8:

x=6

And we're done!

So, our original number was 6.

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4 0
3 years ago
A man divided $9,000 among his wife, son, and daughter. The wife received twice as much as the daughter, and the son received $1
mestny [16]

Answer:4000

Step-by-step explanation: becuase each would get 3000 and he got 1000 so 3000+1000=4000

7 0
2 years ago
If<br>A = i +3j -2K and B=4i-2j+4k<br>Find (2A+B).(A-2B)​
Marizza181 [45]

GIVEN :

a = 1/√10 ( 3i + k) and

b = 1/7 ( 2i + 3j - 6k)

TO FIND :

( 2a- b) . [ ( a x b ) x ( a + 2b)]

SOLUTION :

◆Going with the equation given,

( 2a - b) . [ ( a x b ) x ( a + 2b)]

= (2a - b) [( a×b×a) + 2(a×b)×b]

◆BAC - CAB RULE,

A×B×C = B( A.B ) - C(A.B )

= (2a- b ) [ (b (a.a ) - a (a.b ) + 2b ( a.b) -2b (a.b]

Solving further

= (2a - b )(b - 2a)

= -4a.a -b.b

=-5.

Answer:

( 2 - b) . [ ( a x b ) x ( a + 2b)] = -5

Hoped I helped

8 0
3 years ago
What does an equal sign mean mathematically?
DIA [1.3K]

Answer:

It means that the both sides of the expression in the given equation must be/are congruent.

Hope this helps!

3 0
2 years ago
Daniela is a stain glass artist; she created the window below for her living room. What is
OLga [1]
The window has a shape of a semi-circle (half of a circle).

We know the diameter d = 12 ft.

The area of a (complete) circle is given by the formula:
A = π × r²

The radius can be found by halving the diameter:
r = d ÷ 2
  = 12 ÷ 2
  = 6 ft

Therefore the area of the circle will be:
<span>A = π × r²
    = 3.14 × 6</span>²
    = <span>3.14 × 36
    = 113.04 ft²

And the area of the semi-circle:
A = </span><span>113.04 </span>÷ 2
   = 56.52 ft²

Hence, the area of the window will be 56.52 ft².
3 0
3 years ago
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