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2 years ago

What is -15xy + 25x factored

Mathematics

2 answers:

Oksanka [162]2 years ago

4 0

Since -5x is common to both factors, hence the factored form is;

-5x(3y - 5)

<h3>Factoring equation</h3>

Given the exprssion -15xy + 25x

Fing the factors of each term

-15xy = -5 * 3 * x * y

25x = 5 * 5 * x

Since -5x is common to both factors, hence the factored form is;

-5x(3y - 5)

Learn more on factored form here: brainly.com/question/43919

Oksanka [162]2 years ago

3 0

$\Huge \tt \boxed{\boxed{ - 5x \times (3y-5)}}$

$\\\\$

$\Large \boxed{ \sf {Question \: given↬\: -15xy + 25x \: factored }}\\ \\ \Large \boxed{ \sf{ Lets \: solve:- }}\\ \\\Large\boxed{\sf{⇒-15xy +25x} }\\ \\ \Large \boxed{ \sf{⇒taking \: -5x \: common \: nd \: rest \: in \: multiplaction}} \\ \\ \Large \boxed{\sf{⇒-5x(3y-5)}} \\ \\ \\$

$\large\color{cyan}{\boxed{\frak{࿈\:Mr_Toxic}}}$

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Two students were asked to find the value of a $1000 item after 3 years. The item was depreciating (losing value) at a rate of 4

Yuki888 [10]

Answer:

<em>Student 2 is incorrect because he didn't use the formula properly</em>

Step-by-step explanation:

The exponential function is often used to model natural growing or decaying processes, where the change is proportional to the actual quantity.

An exponential decaying function is expressed as:

$C(t)=C_o\cdot(1-r)^t$

Where:

C(t) is the actual value of the function at time t

Co is the initial value of C at t=0

r is the decaying rate, expressed in decimal

The initial value of the item is Co=$1000, the rate of decay is r=40%=0.4, and the time is t=3 years.

Substituting into the formula:

$C(3)=\$1000\cdot(1-0.4)^3$

$C(3)=\$1000\cdot0.6^3$

C(3)=$216

Student 2 is incorrect because he didn't use the formula properly

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2 years ago

Devin has a furniture store. He sold a shoe rack recently for 3450. It cost him just 2300 to make the rack

True [87]

Answer:

50%

Step-by-step explanation:

3450 - 2300 = 1150

1150/ 2300 × 100 = 50

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2 years ago

Customers arrive at a grocery store at an average of 2.1 per minute. Assume that the number of arrivals in a minute follows the

Black_prince [1.1K]

Answer:

a) P(2)=0.270

b) P(X>3)=0.605

c) P=0.410

Step-by-step explanation:

We know that customers arrive at a grocery store at an average of 2.1 per minute. We use the Poisson distribution:

$\boxed{P(k)=\frac{\lambda^k \cdot e^{-\lambda}}{k!}}$

a) In this case: $\lambda=2.1$

$P(2)=\frac{2.1^2 \cdot e^{-2.1}}{2}\\\\P(2)=0.270$

Therefore, the probability is P(2)=0.270.

b) In this case: $\lambda=2\cdot 2.1=4.2$

$P(X>3)=1-P(X\leq 3)\\\\P(X>3)=1-\sum_{x=0}^3 \frac{4.2^x \cdot e^{-4.2}}{x!}\\\\P(X>3)=1-0.395\\\\P(X>3)=0.605$

Therefore, the probability is P(X>3)=0.605.

c) We know that two customers came in in the first minute. That is why we calculate the probability of at least 5 customers entering the other 2 minutes.

In this case: $\lambda=2\cdot 2.1=4.2$

$P(X\geq 5)=1-P(X$

Therefore, the probability is P=0.410.

4 0

3 years ago

Solve this equation: y-3x+15=10

Jlenok [28]

Answer:

10=10

Step-by-step explanation:

y-3x+15=10

y=3x-15+10

y=3x-5

subtitute y=3x-5 in the above equation:

3x-5-3x+15=10 (3x will be eliminated with -3x)

-5+15=10

10=10

(i hope this is the way you want the answer but at least I think it is correct)

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3 years ago

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vesna_86 [32]

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