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Kruka [31]
3 years ago
5

The product of a number and 8 less than the number is –15. Find the number. and plz explain

Mathematics
1 answer:
blondinia [14]3 years ago
4 0

Answer:

It can be 5 or  3

Step-by-step explanation:

let x = that number

x * (x - 8) = -15

xx  - 8x + 15 = 0

xx -  3x  - 5x + 15 = 0

x(x - 3) - 5(x - 3) = 0

(x - 5)(x - 3) = 0

then x = 5 or  x = 3

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Answer:

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8 0
3 years ago
An ant has a mass of approximately 4 × 10–3 grams and an elephant has a mass of approximately 8 x 106 grams. About how many time
Butoxors [25]
Ant's mass: 4 x 10 - 3
Elephant's mass: 8 x 106

First, we should evaluate these expressions by using PEMDAS. PEMDAS stands for Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction. From P to S is the order that we must follow these steps.

So first for the ant's mass, we have to multiply first since the M comes before the S, resulting in 40 - 3 grams.
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In order to see how many times larger the elephant is than the ant, we have to divide the elephant's mass by the ant's.
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5 0
3 years ago
What is the Value of x when x + 10=4?
Kisachek [45]

Answer:

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5 0
3 years ago
You know that for any , neither sin nor cos can be greater than 1. how can you explain this using the unit circle definitions of
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In the unit circle the hypotenuse of the triangle formed  is equal to radius of circle , which = 1. The point on the circle formed by the intersection of the hypotenuse  is  (cos q , sin q)  where q is the angle between the x axis and the hypotenuse.   As the hypotenuse = 1 the opposite and adjacent sides of the triangle < 1   so sin and cos of q  must both be  <= 1.
4 0
3 years ago
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Crazy boy [7]

Answer:

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8 0
2 years ago
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