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
never [62]
3 years ago
12

Does anyone know how to do expressions and equasions

Mathematics
1 answer:
Deffense [45]3 years ago
7 0

Answer:

an expression is numbers, symbols and operators (such as + and ×) grouped together that show the value of something and a equation is an equation says that two things are equal. (7+2=9) this is an equation

You might be interested in
Which survey question will produce discrete data? Select all that apply.
just olya [345]

What is your gender

Are you married

8 0
3 years ago
Read 2 more answers
Can some one help me with the rest of this chapter! I’ll pay them as-well!
forsale [732]

Answers:

  • a = 475
  • r = -0.5
  • f(3) = 59.4

=======================================================

Explanation:

Any exponential function is of the form y = a*b^x

Comparing that to y = 475*(0.5)^x, we see that a = 475 and b = 0.5

Set b equal to 1+r and solve for r

1+r = 0.5

r = 0.5-1

r = -0.5

The negative r value tells us that the growth rate is -50%, in other words, we have a 50% decay rate. The amount drops by 50% each time x goes up by 1. This is the same as saying the amount cuts in half each time x goes up by 1.

-----------------------

Lastly, plug in x = 3 to find f(3)

f(x) = 475(0.5)^x

f(3) = 475(0.5)^3

f(3) = 59.375

f(3) = 59.4

5 0
3 years ago
Mr.Osei and his wife are both teachers and earn $520 and $450 per month respectively.Find the ratio of Mr.Osei's icome to that o
grandymaker [24]

Answer:

$52 to $45

Step-by-step explanation:

First put their income into a ratio:

520 to 450

Now you can put it into a fraction and then simplify it:

520/450

Divide each by 10

520/10 = 52

450/10 = 45

So 52/45

6 0
3 years ago
Please help me, if you help then thank you
NNADVOKAT [17]

Answer:

He should have subtracted the exponents

Step-by-step explanation:

3 0
2 years ago
Match the one-to-one functions with their inverse functions.
Nady [450]
The inverse of a function is obtained by making x the subject of the formular of the function.

Given the function
f(x)= \frac{x}{8} -7
the inverse of the function is obtained as follows:
y= \frac{x}{8} -7 \\  \\ y+7=\frac{x}{8} \\  \\ x=8(y+7) \\  \\ \bold{f^{-1}(x)=8(x+7)}

Given the function
[tex[f(x)=x+7[/tex]
the inverse of the function is obtained as follows:
y=x+7 \\  \\ x=y-7 \\  \\ \bold{f^{-1}(x)=x-7}

Given the function
f(x)=1- \frac{x}{3}
the inverse of the function is obtained as follows:
y=1- \frac{x}{3} \\  \\  -\frac{x}{3} =y-1 \\  \\ x=-3(y-1) \\  \\ \bold{f^{-1}(x)=-3(x-1)}

Given the function
f(x)=20-0.25x
the inverse of the function is obtained as follows:
y=20-0.25x=20- \frac{1}{4} x \\  \\ \frac{1}{4} x=20-y \\  \\ x=4(20-y) \\  \\ \bold{f^{-1}(x)=4(20-x)}
5 0
3 years ago
Other questions:
  • A factory makes an oil mixture by mixing oils of grades A and B as follows. For every 2.3 liters of grade A oil, 1.2 liters of g
    11·2 answers
  • Explain why you can use subtraction to solve a division problem
    11·1 answer
  • a magazine has 5580000 subscribers this year. This number is down 7% from last year. How many subscribers were there last year?
    6·2 answers
  • How do you write 863.141 in expanded form
    9·1 answer
  • A painter is placing a ladder to reach the third story window, which is 23 feet above the ground and makes an angle with the gro
    9·1 answer
  • ANSWER QUICK!! 75 PTS!!!
    8·1 answer
  • Daniel takes his dog on a walk 3 times a day.How many walks does he go on in one week ?
    14·2 answers
  • Point N is on line segment MO. Given MO = 3x - 10, NO = x, and M N = 8,
    14·1 answer
  • The steam and the leaf plot list the ages of customers in a book store
    14·1 answer
  • Convert 6 yards into meters. Round your answer to the nearest tenth.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!