Find x if, 5x+2x=2-1

Mathematics

2 answers:

3241004551 [841]3 years ago

6 0

Answer:

x = 1/7

Step-by-step explanation:

add the two numbers with the x's and subtract 1 from 2. You'll get 7x = 1. Divide 7 from both sides to get x by itself.

creativ13 [48]3 years ago

3 0

Answer:

Exact Form: x=1/7

decimal form: 0.142857

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable. Hope this helps you better understand! Also, if you want to double check your answers try M-a-t-h-w-a-y. They won't let me write the exact link.

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Marta_Voda [28]

Answer:

y = 9x + (-7) should be the answer

6 0

3 years ago

How much time will it take for a bug to travel 5m across the floor if it is traveling at 0.5m/s?

goldenfox [79]

Answer:

10 seconds

Step-by-step explanation:

Every second the bug travels 0.5m/s or 0.5 meters per second.

Given that, every 2 seconds the bug will travel a full 1 meter.

To solve this one can simply divide 5m by 0.5 and get 10 seconds.

5 0

3 years ago

G(x) = -2x^3 – 15x^2 + 36x

shusha [124]

Consider the function $G(x) = -2x^3 - 15x^2 + 36x.$ First, factor it:

$G(x) = -2x^3 - 15x^2 + 36x=-x(2x^2+15x-36)=\\ \\=-x\cdot 2\cdot \left(x-\dfrac{-15-\sqrt{513}}{4}\right)\cdot \left(x-\dfrac{-15+\sqrt{513}}{4}\right).$

The x-intercepts are at points $\left(\dfrac{-15-\sqrt{513} }{4},0\right),\ (0,0),\ \left(\dfrac{-15+\sqrt{513} }{4},0\right).$

1. From the attached graph you can see that

function is positive for $x\in \left(-\infrty, \dfrac{-15-\sqrt{513} }{4}\right)\cup \left(0,\dfrac{-15+\sqrt{513} }{4}\right);$
function is negative for $x\in \left(\dfrac{-15-\sqrt{513} }{4},0\right)\cup \left(\dfrac{-15+\sqrt{513} }{4},\infty\right).$