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3 years ago

How do the signs of factors affect their products

Mathematics

1 answer:

evablogger [386]3 years ago

3 0

Answer:

If a negative number is multiplied with a positive number, it will be negative. If two positive numbers are multiplied, it will be positive. If two negative numbers are multiplied, it will also be positive.

Step-by-step explanation:

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Cosx=5/17. Solve for x

allsm [11]

Looks like the answer is 72.89 degrees, which is roughly equal to 73 degrees.

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2 years ago

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You want to rent movies online. The new service charges a sign up fee of

Nezavi [6.7K]

y = 12x + 10

Assuming that your question is multiple choice, the variables might be different.

The reason that it's represented as 12x + 10 is because there is a flat fee of $10 when you sign up. From then on afterward, every month you pay $12.

In this equation, the variable 'y' represents the total cost, while 'x' represents the number of months this service was in use.

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3 years ago

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I NEED HELP!! please show all work

PtichkaEL [24]

Take the logarithm of both sides. The base of the logarithm doesn't matter.

$4^{5x} = 3^{x-2}$

$\implies \log 4^{5x} = \log 3^{x-2}$

Drop the exponents:

$\implies 5x \log 4 = (x-2) \log 3$

Expand the right side:

$\implies 5x \log 4 = x \log 3 - 2 \log 3$

Move the terms containing x to the left side and factor out x :

$\implies 5x \log 4 - x \log 3 = - 2 \log 3$

$\implies x (5 \log 4 - \log 3) = - 2 \log 3$

Solve for x by dividing boths ides by 5 log(4) - log(3) :

$\implies \boxed{x = -\dfrac{ 2 \log 3 }{ 5 \log 4 - \log 3 }}$

You can stop there, or continue simplifying the solution by using properties of logarithms:

$\implies x = -\dfrac{ \log 3^2 }{ \log 4^5 - \log 3 }$

$\implies x = -\dfrac{ \log 9 }{ \log 1024 - \log 3 }$

$\implies \boxed{x = -\dfrac{ \log 9 }{ \log \frac{1024}3 }}$

You can condense the solution further using the change-of-base identity,

$\implies \boxed{x = -\log_{\frac{1024}3}9}$

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2 years ago

This list gives facts about a library.

Alchen [17]

Answer:

if you can use the app photomath or m.a.t.h. w.a.y

Step-by-step explanation:

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2 years ago

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All right angles are congruent. Converse Inverse: Contrapositive

WITCHER [35]

Answer:

No not all right angles are congruent.

Step-by-step explanation:

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3 years ago