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Marysya12 [62]
2 years ago
6

How do you solve this 2x +5 - 7x = 15

Mathematics
1 answer:
Serga [27]2 years ago
7 0
1. combine like terms (2x and -7x) to create -5x
2. subtract 5 from each side to create: -5x=10
3. divide both sides by -5
4. x=-2
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If an=5n-3 find the common difference​
elena55 [62]

Answer:

Hi here is your answer

an=5n-3

an-1= -3+5n

an-1= -3+5(n-1)

an-1= -3+5n-5

an-1= 5n-7

d= an- an-1

d=(5n-3)-(5n-7)

d=5n-3-5n+7

d=4

Answer: d = 4

Hope this helps you.

3 0
3 years ago
Read 2 more answers
Let f=​{(-1, 4)​,(1, 9)​,(4, 0)​} and g=​{(-1, -8)​,(2, -7)​,(4, 8)​,(5, -9)​}. Find​ g/f and state its domain.
tekilochka [14]

Answer:

g/f = {(-1, 2)}

domain of g/f = {-1}

Step-by-step explanation:

Given,

f =​ {(-1, 4)​,(1, 9)​,(4, 0)​},

g = ​{(-1, -8)​,(2, -7)​,(4, 8)​,(5, -9)​}

So, Domain of f = {-1, 1, 4},

Domain of g = {-1, 2, 4, 5}

Since,

\frac{g}{f}(x) = \frac{g(x)}{f(x)}

Thus, domain of g/f = Domain of f ∩ Domain of g = {-1, 4}

If x = -1,

\frac{g}{f}(-1) = \frac{g(-1)}{f(-1)}=\frac{-8}{-4}=2

If x = 4,

\frac{g}{f}(4) = \frac{g(4)}{f(4)}=\frac{8}{0}=\infty (\text{ not possible})

Hence, the domain of g/f = {-1}

And, g/f = {(-1, 2)}

4 0
2 years ago
|6t−7|−8 ≥ 3 Please help me quick
Phantasy [73]
Hope the answer helps you!!!
:)

5 0
2 years ago
A. 6x^3+18x<br> b.6x^2+3<br> c.36x^2+18<br> d. 36x^2+3
zzz [600]

<u><em>The answer:</em></u> 6x^3+18x

<u><em>The Explanation:</em></u> You need to uses distributive property to 6x to x^2+3 which will be 6x^3+18x

6 0
3 years ago
What is the answer please hurry this is to pass my class 10 points!!!
-BARSIC- [3]

Answer:

The answer is A I suppose

7 0
2 years ago
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