1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Vinil7 [7]
2 years ago
5

What is the value of x that makes the given equation true?

Mathematics
2 answers:
kvasek [131]2 years ago
5 0

Answer:

x = -4

Step-by-step explanation:

Expand the brackets:

2(x−8)=x+5x​

2x - 16 = x + 5x

Simplify:

2x - 16 = 6x

Subtract 2x from both sides of the equation:

2x - 16 - 2x = 6x - 2x

-16 = 4x

Divide both sides by 4:

-16 ÷ 4 = 4x ÷ 4

-4 = x

Hope this helps!

vlabodo [156]2 years ago
4 0
Answer: x=-4

. . . . .
You might be interested in
What conclusions can be made about the amount of money in each account if f represents Molly's account and g represents her brot
Nat2105 [25]

Answer:

(b) is true

Step-by-step explanation:

Given

Molly

a = 500 --- starting balance

m = 10 --- monthly rate

Her brother

a = 100 ---- starting balance

r = 10\% --- annual rate

Required

Determine which option is true

First, we calculate her brother's function.

The function is an exponential function calculated as:

y = ab^x

Where b = 1 + r

So, we have:

y = ab^x

y = 100 *(1 + 10\%) ^x

y = 100 *(1 + 0.10) ^x

y = 100 *(1.10) ^x

Hence:

g(x) = 100 *(1.10) ^x

Next, we calculate Molly's function (a linear function)

The monthly function is:

y = mx + a

So, we have:

y = 10x + 500

Annually, the function will be:

y = 10x*12 + 500

y = 120x + 500

So, we have:

f(x) = 120x + 500

At this point, we have:

f(x) = 120x + 500 ---- Molly

g(x) = 100 *(1.10) ^x ---- Her brother

<u>Next, we test each option</u>

(a): Molly's account will have a faster rate of change over [32,40]

We calculated Molly's function to be:

y = 120x + 500

The slope of a linear function with the form: y = mx + b is m

By comparison:

m = 120

Since Molly's account is a linear function, the rate of change over any interval will always be the same; i.e.

m = 120

For his brother:

Rate of change is calculated using:

m = \frac{g(b) - g(a)}{b - a}

m = \frac{g(40) - g(32)}{40 - 32}

m = \frac{g(40) - g(32)}{8}

Calculate g(40) and g(32)

g(x) = 100 *(1.10) ^x

g(40) = 100 * 1.10^{40} =4526

g(32) = 100 * 1.10^{32} = 2111

So, we have:

m = \frac{4526 - 2111}{8}

m = \frac{2415}{8}

m = 302

By comparison: 302 > 120

Hence, her brother's account has a faster rate over [32,40]

(a) is false

(b): Molly's account will have a slower rate of change over [24,30]

m = 120 --- Molly's rate of change

For his brother:

m = \frac{g(b) - g(a)}{b - a}

m = \frac{g(30) - g(24)}{30 - 24}

m = \frac{g(30) - g(24)}{6}

Calculate g(30) and g(24)

g(x) = 100 *(1.10) ^x

g(40) = 100 * 1.10^{30} =1745

g(32) = 100 * 1.10^{24} = 985

So, we have:

m = \frac{g(30) - g(24)}{6}

m = \frac{1745 - 985}{6}

m = \frac{760}{6}

m = 127

By comparison: 127 > 120

Hence, Molly's account has a slower rate over [24,30]

(b) is false

(c): Molly's account will have a slower rate of change over [0,4]

m = 120 --- Molly's rate of change

For his brother:

m = \frac{g(b) - g(a)}{b - a}

m = \frac{g(4) - g(0)}{4 - 0}

m = \frac{g(4) - g(0)}{4}

Calculate g(4) and g(0)

g(x) = 100 *(1.10) ^x

g(4) = 100 * 1.10^4 =146

g(0) = 100 * 1.10^{0} = 100

So, we have:

m = \frac{g(4) - g(0)}{4}

m = \frac{146 - 100}{4}

m = \frac{46}{4}

m = 11.5

By comparison: 120>11.5

Hence, Molly's account has a faster rate over [0,4]

(c) is false

4 0
3 years ago
Which integer represents this situation?
Vinil7 [7]

The Answer of the question is "B" or 1,600

6 0
3 years ago
Do you know What is h(t)=-10t+6
DochEvi [55]

-10t+6=0

-10t=-6

Divide both side by -10

t=3/5

7 0
3 years ago
Which function would be produced by a horizontal stretch of the of y=
sladkih [1.3K]

Answer: the answer to you question is c


3 0
3 years ago
There are 205 coins in a jar all of which are either nickles or quarters . The vaule of the coin in the jar is $31.85. if both o
Gnesinka [82]

Answer: There are 97 nickels and 108 quarters.

Step-by-step explanation:

Let x = Number of nickels, y = Number of quarters.

As per given,

x+y = 205    ...(i)

0.05x+0.25y = 31.85 ... (ii)    [1 nickel = $0.05, 1 quarter = $ 0.25]

Multiply (ii) by 20, we get

x+5y=637   ...(iii)

Eliminate (i) from (iii)

4y = 432

⇒ y = 108 [Divide both sides by 4]

Put value of y in (i), we get

108+x=205\Rightarrow\ x= 97

Hence, there are 97 nickels and 108 quarters.

6 0
3 years ago
Other questions:
  • Ahhhh I dunno how to do this (hopefully the thing loads the picture, I'm sorry if it doesn't)
    8·1 answer
  • Triangle XYZ has been dilated to form triangle LMN. What is the least amount of information needed to prove the two triangles ar
    6·2 answers
  • In the figure, transversal t intersects the parallel lines a and b, and is 64.76°.
    12·2 answers
  • 17. Write a quadratic equation to find two consecutive odd natural numbers whose
    8·1 answer
  • Natalia paid 38.95 for three medium-sized pizzas and a salad.solve an equation to find the cost of one pizza, p, if Natalia paid
    15·1 answer
  • According to a study done by De Anza students, the height for Asian adult males is normally distributed with an average of 66 in
    13·1 answer
  • Which function can be used to describe the sequence? -2/3, -4, -24
    12·1 answer
  • Measurements <br>1. <br>2.<br>3.<br>4.<br>5.<br>6.
    7·1 answer
  • Which second degree polynomial function has a leading coefficient of -1 and root 4 with multiplicity 2?
    8·1 answer
  • Im being timed so please be quick thank you !!
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!