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3 years ago

Factorise 15x + 35y - 40 z

Mathematics

2 answers:

Amanda [17]3 years ago

5 0

<span>15x + 35y - 40 z = 5 (3x + 7y -8z)

hope that helps
............................</span>

melamori03 [73]3 years ago

4 0

For this case we have the following expression.

$15x + 35y - 40 z$

We must find a term of expression that is repeated in all terms.

We then have the number 5.

By doing common factor 5 in all the expression we have:

$15x + 35y - 40 z = 5 (3x + 7y - 8z)$

Answer:

The factored expression is given by:

$5 (3x + 7y - 8z)$

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Please help math finals!!!What is the equation of the line that has a slope of 14 and goes through the point (8,−3)

katovenus [111]

I'm taking the same final test.

The answer is y= 1/4x - 5

How? Well in this case we are using the formula y= mx + b

Substituting it with the given point (8, -3) and the slope 1/4

it'll look like -3 = 1/4 (8) + b

Next we solve.

-3 = 1/4 (8) + b

-3 = 8/4 + b

-3 = 2 + b

-2 -3 = b

-5 = b

so we now we know that b = -5.

All we have to do is substitute that into the equation to get our final answer (this time, without the point 8,-3).

Our answer in the end is y = 1/4x -5

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3 years ago

The function f ( x ) = 2 ⋅ 5 ^x can be used to represent an exponential growth curve. Which of the following points is NOT on th

12345 [234]

Answer:

Point (2, 20) does not lie on the given curve.

Step-by-step explanation:

Let us see explanation:

$f(x) = 2. \: {5}^{x} \\ \\ \therefore \: f(x) \: at \: x = 2 \\ f(2) = 2. {5}^{2} = 2.25 = 50 \\ \\ hence \: at \: x = 2 \: \: f(x) = 50 \\ \therefore \:point (2 \: \: 20) \: does \: not \: lie \: on \: the \: \\ \: \: \: \: \: curve.$

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3 years ago

Read 2 more answers

Solve for X please!!!!!!!!!!!!! I need this answer ASAP<br><br> 2x + 1/3x = 21

Trava [24]

we can add/subtract the same expression to both sides of the equation to get an equivalent equation;
we can multiply/divide both sides of the equation by the same non-zero number to get the equivalent equation.

<u>Equivalent equations</u> are algebraic equations that have identical solutions.

We have the equation:

$2x+\dfrac{1}{3}x=21$