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3 years ago

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

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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