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3 years ago

PLEASE HELP... What do you do when none of the variables cancel out while solving systems by elimination?

Mathematics

1 answer:

Vitek1552 [10]3 years ago

3 0

Answer:

multiply one or both of the equations until a variable can cancel out

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Solve for x. 4^(×-1)=1<br>

steposvetlana [31]

Answer:

$4^{\left(x-1\right)}=1$

$\Rightarrow\left(x-1\right)\ln \left(4\right)=\ln \left(1\right)$

$\hookrightarrow x=1$

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3 years ago

Find the volume of the triangular prism with height=9 cm, base=6cm, and altitude of triangles=8cm

telo118 [61]

The answer is C

Multiply all of the measurements and divide by 2. Picture cutting the triangle in half from the top point, then use the measurements you have and multiply live it’s a rectangular prism.

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3 years ago

Read 2 more answers

A population of mice is increasing exponentially. On Monday there were 120 most. One month later there were 132 most. Ready func

djyliett [7]

Answer:

$y=120 * 1.1^x$ --- function

The monthly rate is 10%

Step-by-step explanation:

Given

Let

$x \to months$

$y \to mice$

So, we have:

$(x_1,y_1) = (0,120)$ --- Monday

$(x_2,y_2) = (1,132)$ --- One month later

Required

The function

The function is represented as:

$y=ab^x$

In $(x_1,y_1) = (0,120)$ , we have:

$120 = a * b^0$

$120 = a * 1$

$120 = a$

$a=120$

In $(x_2,y_2) = (1,132)$ , we have:

$132 = a * b^1$

$132 = a * b$

Substitute: $a=120$

$132 = 120 * b$

Solve for b

$b = \frac{132}{120}$

$b = 1.1$

So, the function is:

$y=ab^x$

$y=120 * 1.1^x$

To calculate the monthly rate (r), we have:

$y =a(1 + r)^x$

Compare to: $y =ab^x$

$1 + r = b$

Make r the subject

$r = b-1$

Substitute $b = 1.1$

$r = 1.1-1$

$r = 0.1$

Express as percentage

$r = 0.1*100\%$

$r = 10\%$

5 0

3 years ago

I will give BRAINLIEST! ANSWER FOR 30 Points !!!!

Lilit [14]

Answer:

The answer is 3

Step-by-step explanation:

You can see that it recurs faster than usual for a tan curve so 1 is eliminated and it cant be 2 or 4 because it isnt recurring equally.

<h2>Please give brainliest</h2>

4 0

2 years ago

Help me, please......

denpristay [2]

Answer:

(x, y ) → (x - 4, y + 8 )

Step-by-step explanation:

4 units left in the x- direction means subtract 4 from the x- coordinate

8 units up in the y- direction means add 8 to the y- coordinate

Then the translation rule is

(x, y ) → (x - 4, y + 8 )

3 0

2 years ago