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emmainna [20.7K]
3 years ago
9

Which value of x makes the equation -5(x-3)=-25​

Mathematics
2 answers:
Mnenie [13.5K]3 years ago
4 0

Answer:

x=8

Step-by-step explanation:

-5(x-3)=-25

Divide each side by -5

-5/-5(x-3)=-25/-5

x-3 = 5

Add 3 to each side

x-3+3 = 5+3

x = 8

Leviafan [203]3 years ago
3 0

Answer:

x =  - 5.6

Step-by-step explanation:

- 5(x - 3) =  - 25 \\  - 5x + 3 =  - 25 \\  - 5x =  - 25 - 3 \\  - 5x =  - 28 \\  \frac{ - 5x}{ - 5}  =  \frac{ - 28}{ - 5}  \\ x =  - 5.6

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(\stackrel{x_1}{4}~,~\stackrel{y_1}{3})\qquad (\stackrel{x_2}{7}~,~\stackrel{y_2}{-2}) ~\hfill \stackrel{slope}{m}\implies \cfrac{\stackrel{rise} {\stackrel{y_2}{-2}-\stackrel{y1}{3}}}{\underset{run} {\underset{x_2}{7}-\underset{x_1}{4}}} \implies \cfrac{-2 -3}{7 -4} \implies \cfrac{ -5 }{ 3 }

\begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-\stackrel{y_1}{3}=\stackrel{m}{-\cfrac{5}{3}}(x-\stackrel{x_1}{4}) \\\\\\ y-3=-\cfrac{5}{3}x+\cfrac{20}{3}\implies y=-\cfrac{5}{3}x+\cfrac{20}{3}+3\implies y=-\cfrac{5}{3}x+\cfrac{29}{3}

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2 years ago
What is the equation of the line that passes through the points (0,5) and (2/3)
andreev551 [17]

Answer:Y= -x+5

Step-by-step explanation:

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3 years ago
Solve the equation for solutions over the interval ​[0​°, 360°​).
olchik [2.2K]

Answer:

x=98.13^\circ,135^\circ,278.13^\circ,315^\circ

Step-by-step explanation:

tan^2x+7tanx+8=0,[0^{\circ},360^\circ)

tan^2x+7tanx+8=0

u=tanx <-- U-substitution

u^2+7u+8=0

(u+7)(u+1)=0

(tanx+7)(tanx+1)=0 <-- Replace u with tanx

tanx+7=0

tanx=-7

x=98.13^\circ,278.13^\circ

tanx+1=0

tanx=-1

x=135^\circ,315^\circ

Therefore, x=98.13^\circ,135^\circ,278.13^\circ,315^\circ

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Evaluate b^2 c^-1 for b = 8 and c = -4.<br><br> A. -16<br> B. 1/16<br> C. 16<br> D. 256
Goryan [66]

Answer:

-16

Step-by-step explanation:

b^2 c^-1

We know that c^-1 can also we written as 1/ c

b^2 / c

Let b =8 and c = -4

8^2 / (-4)

64 / -4

-16

7 0
3 years ago
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