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2 years ago

What value of x satisfies this equation? log(5x+20)=2

Mathematics

2 answers:

Serggg [28]2 years ago

7 0

Answer:

16 was right

Step-by-step explanation:

Ipatiy [6.2K]2 years ago

5 0

Answer:

Step-by-step explanation:

Given expression:

log(5x + 20) = 2

From the given expression, we are to find x;

Using the rule of logarithm, we can solve this problem;

logₐb = C

b = Cᵃ

So;

log(5x + 20) = 2

this is to base 10;

5x + 20 = 10²

5x = 100 - 20

5x = 80

x = 16

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If f(x)=3x² - 4 and g(x)=x+2, find (f - g)(x).

nika2105 [10]

Answer:

Step-by-step explanation:

(f - g)(x)

= f(x) - g(x)

= 3x² - 4 - (x + 2) ← distribute parenthesis by - 1

= 3x² - 4 - x - 2 ← collect like terms

= 3x² - x - 6

3 0

2 years ago

Let p: A number is greater than 25.

maria [59]

We are given that:
p is greater than 25, this means that p>25
p ∈ ]25,∞[ ...........> interval I

q is less than 35, this means that q<35
q ∈ ]-∞,35[ ...........> interval II

The given condition p ∧ q is true means that (p and q) is true. In other word, their intersection is true.
Therefore, the final result would be the intersection between the two intervals (interval I and interval II)

Bases on the above, the final answer would be:
]-∞,35[ ∧ ]25,∞[ which is ]25,35[

8 0

3 years ago

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maw [93]

Hello!

You can use the Pythagorean Theorem

$a^{2} + b^{2} = c^{2}$

C is the hypotenuse which is the line across the diameter
a and b are the other sides

You have to find the bottom side of the triangle

9 - 6 = 3

Put in the values you know

$9^{2} + 3^{2} = c^{2}$

Square the numbers

$81 + 9 = c^{2}$

Add

$90 = c^{2}$

take the square root of both sides

$\sqrt{90} = c$

The answer is $C) \sqrt{90}$

Hope this helps!

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3 years ago

The price of a pound of cook shrimp was $3.29. how much was this to the nearest dollar?

ikadub [295]

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2 years ago

V70 Estimate the square root of the number below to the nearest tenth

Fiesta28 [93]

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2 years ago

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