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
Snowcat [4.5K]
3 years ago
6

Can someone check my answers?

Mathematics
1 answer:
love history [14]3 years ago
3 0
1. 21(x-4)+2 = 21x - 84 + 2 = 21x - 82 (C is the correct answer) 
2. 5x-102 = 13; 5x = 115; x = 115/5; x = 23 (A is the correct answer)
 3. 2x-31=3(x+2); 2x-31=3x+6; -x=37; x=-37 (B is the correct answer)
 4. Correct answer is (-5, -1, 3, 7, 11). When each of the X values is put in the equation for Y, i.e. 4x-1. Thus: 4*(-1)-1=-5; 4*0-1=-1; 4*1-1=3; 4*2-1=7; 4*3-
1=11
 5. Slope is 3. y=3x-5
You might be interested in
The population of a certain species of insect is given by a differentiable function P, where P(t) is the number of insects in th
Alisiya [41]

Answer:

c. dP/dt = (1/5)P

Step-by-step explanation:

Given that the rate of change of population with respect to time dP/dt is directly proportional to the population, P, we have

dP/dt ∝ P

dP/dt = kP

Given that dP/dt = 2 million insects per day and P = 10 million insects after 5 days, So,

2 = k × 10

k = 2/10

k = 1/5

So, dP/dt = kP

dP/dt = (1/5)P

6 0
3 years ago
Write a system of equations with a solution (4,–3)
Gennadij [26K]
<span>1.       </span><span>So we have the system of equation. (4, -3)
let’s create another system of equation.
Let a = 4
and Let b = -3
First equation
=> Let’s pick any numbers to be used. Let’s have number 5
=> 5a + 5b
=> 5 (4) + 5 (-3)
=> 20 + (-15)
negative and positive is equals to negative
=> 20 – 15
=> 5 (this the first value of our equation, let this be the value of X)

Second
=> Pick another number, Let’s have 6
=> 6a + 6b
=> 6 (4) + 6 (-3)
=> 24 + (-18)
=> 24 – 18
=> 6 (this is the value of our second equation, let this value be Y)

Now, we have (A, B) = (4, -3) and (X, Y) = (5,6)</span>



3 0
3 years ago
Read 2 more answers
Which of the following is a factor of 10x2 − 19x 6? 5x − 3 5x − 2 2x 1 none of the above
kati45 [8]
I believe the correct answer from the choices listed above is the fourth option. The factor of the expression given as <span>10x^2 − 19x^6 would be 1 only. None of the other choices would factor correctly the expression. Hope this answers the question. Have a nice day.</span>
7 0
4 years ago
Read 2 more answers
HELP IM LITERALLY SOBBING
Vika [28.1K]

Answer: Y= 8x + 2.8

Step-by-step explanation: slope is 8 (think rise over run) and y-intercept seems to be 2.8, heh hope that helped

3 0
3 years ago
Read 2 more answers
5n – 2n<br> I need help asap
blondinia [14]
Combining those like terms would end as 3n.

Explanation: The end of a subtraction equation is basically just the negative number, except you add it to the other part.

For example, 2n is really -2n, and you just add -2n to 5n (which is positive,) and you get 3n.
7 0
3 years ago
Other questions:
  • In which sentence are all periods used correctly?
    14·1 answer
  • As part of a survey, 300 girls were asked to name their favorite sport. The results showed that 12 of the girls named bowling as
    10·1 answer
  • A recipe calls for 2 cups of flour to make 2 dozen cookies. use the proportion to calculate how much flour is needed to make 6 d
    13·1 answer
  • Write the number that has one unit 3 hundreds 8 thousands and 6 tens of thousands
    15·1 answer
  • When answering this question, which is correct? 3 and 9 are ones or tens in the number 39?
    7·1 answer
  • Which values are in the solution set of 111 = z^2 + 11 if the replacement set is {10, 12, 14, 16, 18}?
    13·1 answer
  • A dirt bike has been marked down 12% and now costs $4286.70. What was the original cost?
    10·1 answer
  • Each package of paper costs 3 dollars. Explain how to find how much 12 boxes of printer paper will cost.
    11·1 answer
  • Find the y-intercept of the parabola y = x2 + 1.
    13·1 answer
  • HELP PLEASE ILL GIVE BRAINLEST IF U HELP QUICK
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!