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jok3333 [9.3K]
4 years ago
8

Plzzzz Help!!!!!!

Mathematics
1 answer:
gregori [183]4 years ago
3 0

Answer:

The answer is 215=55x+40 or 215=40+55x

Step-by-step explanation:

The reason it is that is because the plumber charges $55 for a service and he adds 40 for each hour he works so that is why this is the answer Remember the total bill cost 215 so that comes as the equation is equal to.

Hope that helps

You might be interested in
5+6(2x-1) <br> i need this like now pls
Crank

Answer:

Step-by-step explanation:

5 + 6 = 11 x 2 - 1 = 21 therefore its 21

5 0
3 years ago
Let f(x) = cos(x) + 2x.<br> Where does f have critical points?
adell [148]

Answer:

<em>f</em> has no critical points.

Step-by-step explanation:

We are given:

f(x)=\cos(x)+2x

A function has critical points whenever its derivative equals 0 or is undefined.

Differentiate the function:

f'(x)=-\sin(x)+2

Since this will never be undefined, solve for its zeros:

0=-\sin(x)+2

Hence:

\displaystyle \sin(x)=2

Recall that the value of sine is always between -1 and 1.

Thus, no real solutions exist.

Therefore, <em>f</em> has no critical points.

6 0
3 years ago
Given that √5 ≈ 2.2360679775 and ???? ≈ 3.1415926535, find the sum √5 + ???? to an accuracy of 10−8 without using a calculator.
muminat

Answer:

√5 + π  = 537766063.1 × 10^{-8}

Step-by-step explanation:

given data

√5 ≈ 2.2360679775

π ≈ 3.1415926535

to find out

√5 + π

solution

√5 + π  = 2.2360679775 + 3.1415926535

√5 + π  =  5.3776606310

√5 + π  =  5.3776606310 × \frac{10^{-8}}{10^{-8}}

√5 + π  = 537766063.1 × 10^{-8}

3 0
3 years ago
Someone pls help me out thanks
Jobisdone [24]

Answer:

C(7,-8)

R= 8

The general formula of a circle = (x-a)+(y-b)=r²

5 0
3 years ago
Each interior angle of a regular polygon is 140°.Find the number of sides​
castortr0y [4]

Step-by-step explanation:

Each interior angle=140°

(n-2)180°/n=140°

180°n-360°/n=140°

180°n-360°=140°n

180°-140°=360°

40°n=360°

n=360°/40°

n=9

Hence, the number of sides of the polygon is 9.

It is nonagon .

8 0
3 years ago
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