All categories

3 years ago

Find the value of each expression 5 7 x 9

Mathematics

1 answer:

MAVERICK [17]3 years ago

7 0

5+7*9
pemdas
multiply first
7*9=63
we have
5+63
add
5+63
68

You might be interested in

-377 = x - 1,000 i dont under stand it

Naddika [18.5K]

Answer:

$\boxed {x = 623}$

Step-by-step explanation:

Solve for the value of $x$ :

$-377 = x - 1,000$

-Switch sides:

$-377 = x - 1,000$

$x - 1,000 = -377$

-Add $1,000$ on both sides:

$x - 1,000 + 1,000 = -377 + 1,000$

$\boxed {x = 623}$

Therefore, the value of $x$ is $623$ .

4 0

3 years ago

Rewrite lnx=4 as an exponential equation <br> rewrite as a logarithmic equation: e^8=y

andreyandreev [35.5K]

$\bf \textit{exponential form of a logarithm} \\\\ \log_a b=y \implies a^y= b\qquad\qquad a^y= b\implies \log_a b=y \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ ln(x)=4\implies log_e(x)=4\implies e^4=x \\\\\\ e^8=y\implies log_e(y)=8\implies ln(y)=8$

5 0

3 years ago

Daisy purchases a gym membership.She pays a signup fee and a monthly fee off 13$.After 4 months, she has paid a total of$69.Use

bulgar [2K]

Answer:

The signup fee is $17

Step-by-step explanation:

we know that

The equation in point slope form is equal to

$y-y1=m(x-x1)$

where

m is the slope or unit rate of the linear equation

(x1,y1) is a ordered pair of the line

Let

x -----> the number of months

y -----> the total cost of a gym membership

In this problem we have

The slope of unit rate is equal to

$m=\$13\ per\ month$

The ordered pair is

$(x1,y1)=(4,69)$

substitute

$y-69=13(x-4)$ ----> equation in point slope form

Convert to slope intercept form

$y-69=13x-52$

$y=13x-52+69$

$y=13x+17$ ---> equation in slope intercept form

The y-intercept is the signup fee (value of y when the value of x is equal to zero)

therefore

The signup fee is $17

4 0

3 years ago

This graph shows a portion of an odd function.

nexus9112 [7]

9514 1404 393

Answer:

-2
-1
-2
-3

Step-by-step explanation:

An odd function is symmetrical about the origin:

f(-x) = -f(x)

So, ...

f(-2) = -f(2) = -2

f(-3) = -f(3) = -1

f(-4) = -f(4) = -2

f(-6) = -f(6) = -3

6 0

2 years ago

Preston and Joel are both solving the equation 2x=14. Preston is not sure what to do because he does not know a power of 2 that

Murrr4er [49]

Answer:

yes

Step-by-step explanation:

You can always separate an equation into two parts and see where those graphs intersect.

Joel's method works well.

_____

<em>Additional comments</em>

Preston should know that the invention of logarithms makes it easy to solve equations like this. x = log₂(14) = log(14)/log(2) ≈ 3.8073549.

As for Joel's method, I prefer to subtract the right side to get the equation ...

2^x -14 = 0

Then graphing y = 2^x -14, I look for the x-intercept. Most graphing calculators make it easy to find x- and y-intercepts. Not all make it easy to find points of intersection between different curves.

7 0

3 years ago