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
alexdok [17]
3 years ago
10

Evaluate the expression, using the given value of the variable.

Mathematics
1 answer:
professor190 [17]3 years ago
6 0
The answer is C. 4

7 - 5 x 3 + 4 x 3
= 7 - 15 + 12
= -8 + 12
= 4


You might be interested in
A swimming pool is 65.25 feet long and 40.5 feet wide. How much longer is the pool than it is wide? 24.35 105.75 1.61 24.75
Tanya [424]

Answer:

D. 24.75

Explanation:

literally just subtract 65.25 by 40.5 ??

8 0
2 years ago
3(x+3/4+5-x/4-x/6)=10​
viva [34]

3(x+3-4+5-x-4-x-6)=10

-3x/-3= -28/3

x= -28/3

5 0
3 years ago
AB = 4 - 5x and BC = 2x+ 25 <br> X= 7
elena-14-01-66 [18.8K]

Answer:

x= - AB-4/5 and No Solution

False for all xER

Step-by-step explanation:

3 0
3 years ago
Sophie and Simon are peeling a pile of potatoes for lunch in the cafeteria. Sophie can peel all the potatoes by herself in 45 mi
tensa zangetsu [6.8K]
Short Answer: 18 minutes
Remark

The answer to this problem is less than the smallest time of the two people working together. that fact lets out C and D (38 minutes and 75 minutes). Now you have to choose 15 minutes and 18 minutes. There's a method. No guessing needed.

Givens
Let the time for Sophie = S
Let the time for Simon = M
Let the job to completion = 1 
S = 45 minutes
M = 30 minutes

Step One
Convert minutes to hours.
45 minutes = 45 / 60 = 3/4 hour = 0.75 hour
30 minutes = 30 / 60 = 1/2 hour = 0.50 hour

Step Two
Set up the Equation
The formula is a form of job / hour.
Let the time = t that they both have to work

job = 1 in these problems.
1/S + 1/M = 1/t
1/0.75 + 1/0.5 = 1/t

Solve
1 ÷ 0.75 = 1.33333
1 ÷ 0.5 = 2

1.3333 + 2 = 3.33333 
3.3333 = 1 / t                    Multlply both sides by t
3.3333*t = 1
t = 1 / 3.333333333
t = 0.3 of an hour


1 hour = 60 minutes
0.3 hours = x              Cross Multiply
x = 60 * 0.3
x = 18 minutes

Answer working together it took them 18 minutes  <<<<< 
6 0
3 years ago
Read 2 more answers
Which sutuation could be represented by -11
xz_007 [3.2K]

Answer:

You have no apples then loose 11 more

Step-by-step explanation:

Trust

3 0
3 years ago
Other questions:
  • Anyone good at algebra?? <br><br> Which of these tables could represent a quadratic function?
    14·1 answer
  • Need help with 23. please
    10·1 answer
  • Simplify the expression by combining like terms.<br> 4x2 – 3y2 + 3z – 5z - 5y2
    12·1 answer
  • 20 people show up to a post-PSTAT 120A party. If everyone shakes hands with everyone else, how many handshakes take place
    13·1 answer
  • Find the distance between (5,4) and (-8,7)
    15·1 answer
  • A population of bacteria is introduced into a culture. The number of bacteria P can be modeled by P(t) = 800 1 + 9t 90 + t2 , wh
    6·1 answer
  • Probability of a standard six side dice landing on a four in the first three rolls?
    12·1 answer
  • Use the figure to find the specified angle measure. In the figure, II q
    8·1 answer
  • The probability that comic book reader in a particular city prefers comics published by company A is 25%. The probability that c
    8·1 answer
  • One root of the equation a(b-c)x^2 + b(c-a)x + c(a-b) = 0 is x=1, find the other root in terms of a, b and c
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!