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3 years ago

The price of an item has dropped to 63$ today yesterday it was 105$ find the percentage decrease

Mathematics

2 answers:

ivolga24 [154]3 years ago

7 0

Answer:

40%

Step-by-step explanation:

ELEN [110]3 years ago

5 0

Answer:

it decreased by 40% percent.

Step-by-step explanation:

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3 years ago

Find the distance between points J and Q.

GarryVolchara [31]

Answer:

The answer is 20

Step-by-step explanation:

From the graph it shows that J is located at point 15, and Q is located at point 35

If we move 20 units from point J to point Q, we land at point Q, making it the distance they are from one another.

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3 years ago

Si a la diferencia entre el suplemento de un angulo y el doble de su complemento le sumamos 20, obtenemos las 3/5 partes de su s

Juliette [100K]

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Step-by-step explanation:

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3 years ago

A 4m ladder rest against a vertical wall with its foot 2m from the wall.How far up the wall does the ladder reach?

adell [148]

A) How high up the wall does it reach?

Use the Pythagorean theorem

Height^2 + Base^2 = Hyp^2

H^2+ 2^2 = 4^2 Subtract the 2^2 from both sides

H^2 = 4^2 -2^2 Multiply the square roots of both the numbers

H^2= 16 - 4

H^2 = 12

H= sqrt(12) m

Hope this helps

4 0

3 years ago

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,

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

5 0

2 years ago

The price of an item has dropped to 63$ today yesterday it was 105$ find the percentage decrease​

The price of an item has dropped to 63$ today yesterday it was 105$ find the percentage decrease