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AleksAgata [21]
3 years ago
14

This equation has one solution. 5(x - 1) + 3x = 7(x + 1) VA What is the solution?

Mathematics
2 answers:
zubka84 [21]3 years ago
8 0
I think the answer is 12
dlinn [17]3 years ago
6 0
The solution is x=12
You might be interested in
Help plz:
kari74 [83]

a ) x is 6

b ) x is 1.5

c ) x is 16/6

d ) x is 2

6 0
3 years ago
Read 2 more answers
Type the correct answer in each box. The reflection of point S across the y-axis is point . The reflection of point Q across the
tresset_1 [31]

Answer:

S' = (-5,-5)

Q"=(-5,-5)

Step-by-step explanation:

Given

S = (5,-5)

Q= (5,5)

Solving (a): Reflect S across y-axis

The rule to reflect across y-axis is:

(x,y) \to (-x,y)

So, we have:

S(5,-5) \to S'(-5,-5)

Hence:

S' = (-5,-5)

Solving (b): Reflect Q across x and y-axis

The rule to reflect across x-axis is:

(x,y) \to (x,-y)

So:

Q(5,5) \to Q'(5,-5)

The rule to reflect across y-axis is:

(x,y) \to (-x,y)

So:

Q'(5,-5) \to Q"(-5,-5)

Hence:

Q"=(-5,-5)

6 0
3 years ago
2x^3-16x^2-40x=0 factor
ExtremeBDS [4]

The given expression is

2x^3-16x^2-40x=0

We extract the common factor 2x.

\begin{gathered} 2x(x^2-8x-20)=0 \\ 2x=0\rightarrow x=0 \\ x^2-8x-20=0 \end{gathered}

The first solution is 0.

Now, we solve the quadratic expression. We have to find two numbers whose product 20 and whose difference is 8. Those numbers are 10 and 2.

x^2-8x-20=(x-10)(x+2)<h2>Hence, the given expressions expressed, as factors, is</h2>2x^3-16x^2-40x=x(x-10)(x+2)

3 0
1 year ago
Didi invested a total of $16125 in two accounts paying 8.5% and 4% simple interest. If her total return at the end of 2 years wa
Arturiano [62]

Answer:

5000 ;

11125

Step-by-step explanation:

Given :

Total principal = 16125

Rates = 8.5% and 4%

Period, t = 2 years

Total interest = 1740

Let :

Principal amount invested at 8.5% = x

Principal amount invested at 4% = 16125 - x

Interest formula :

Interest = principal * rate * time

Hence, mathematically ;

(x * 8.5% * 2) + [(16125 - x) * 4% * 2] = 1740

(0.17x + 1290 - 0.08x ) = 1740

0.09x + 1290 = 1740

0.09x = 1740 - 1290

0.09x = 450

x = 450 / 0.09

x = 5000

Amount invested at 4% :

16125 - 5000 = 11125

8 0
3 years ago
Please help ill give whoever answers the best the brainliest answer
GalinKa [24]
The third chart i think
6 0
2 years ago
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