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
Mama L [17]
3 years ago
10

Monifer used substitution to solve this system of equations. Which equation could be the result of her first step? 3a +b=225 b=a

-15
Mathematics
2 answers:
alexandr402 [8]3 years ago
7 0

Answer:

Step-by-step explanation:

The given system of equations are:

3a+b=225                                         (1)

and b=a-15                                        (2)

Now, substituting the value of b from equation (2) in equation (1), we get

3a+(a-15)=225

⇒3a+a-15=225

⇒4a=225+15

⇒4a=240

⇒a=\frac{240}{4}

⇒a=60

Again, substituting the value of a=60 in equation (2), we get

⇒b=(60)-15

⇒b=45

weeeeeb [17]3 years ago
6 0
3a + a - 15 = 225 . your substituting b(a-15) into the first equation. <span />
You might be interested in
1. Identify the parallel lines.
saul85 [17]

Answer:

1. The parallel lines are m and n

2. The transversal is line t.

3. 8 angles are formed by the transversal.

4. Angles 7 and 5, 1 and 3, 2 and 4, 6 and 8, 6 and 2, 7 and 3, 1 and 5, 4 and 8, 3 and 5, 2 and 8, 4 and 6, and 1 and 7.

5. If m<5 is 110°, then m<1 is also 110°

Hope this helps

4 0
3 years ago
Give 3 examples of jobs that use each method of pay hourly piece work commission salary and tips
Nata [24]
Hourly pay : 
nurse
electrician
plumber

piece work pay : 
farmer
truck driver
machinist

commission : 
real-estate agent
stock-broker
insurance agent

salary :
sales manager
teacher
doctors

tips : (most of these also get hr. pay also)
waitress
bartenders
hotel maid
5 0
3 years ago
A pipe is leaking at 1.5 cups per day. About how many gallons per week is the pipe leaking? hint= 1 gallon= 16 cups.
ss7ja [257]
Amount of water leaked by the pipe per day = 1.5 cups
Number of days in a week = 7
Then
Amount of water leaked by the pipe in 7 days = (1.5 x 7) cups
                                                                         = 10.5 cups
It is already given in the question that
16 cups = 1 gallon
So
10.5 cups = 10.5/16 gallons
                 = 0.65625 gallons
                 = 0.66 gallons
So the pipe is leaking about 0.66 gallons per week. I hope the answer comes to your help.
5 0
3 years ago
Read 2 more answers
Which statements are true of the function f(x) = 3(2.5)x? Check all that apply.
Neporo4naja [7]
For this case we have a function of the form:
 y = A * (b) ^ x&#10;
 Where,
 A: initial amount
 b: growth rate (for b> 1)
 x: independent variable
 y: dependent variable
 We then have the following function:
 f (x) = 3 (2.5) ^ x&#10;
 Using the definition, the following statements are correct:
 1) The function is exponential
 2) The function increases by a factor of 2.5 for each unit increase in x
 3) The domain of the function is all real numbers
8 0
3 years ago
Read 2 more answers
Find the general solution for the differential equation \displaystyle{\left.{d}{y}\right.}+{9}{x}\ {\left.{d}{x}\right.}={0}dy+9
densk [106]

Answer:

y= CC-4.5x^2

Step-by-step explanation:

To find the general solution to the differential equation

dy + 9x dx = 0, we employ the method of separating variable as follows:

Note: { will represent the integral sign here.

Separating the variables and integrating, we have

{dy  = -{9x dx

y = -(9/2)(x^2) + CC,

where CC is the given constant of integration.

This can be rearranged/simplified to yield

y= CC-4.5x^2

6 0
3 years ago
Other questions:
  • What do you need to do for this 2 step
    7·2 answers
  • I need help? Can somebody explain to me what you do here and give me the answer? Please and Thank You
    10·1 answer
  • Clayton volunteered for 33 hours over a 6-week period at the local community center. Assuming he continues to volunteer at the s
    5·1 answer
  • I need help with this:(
    10·1 answer
  • What is the value of x?
    10·2 answers
  • Which choice is equivalent to the expression below? -25 <br>​
    10·2 answers
  • A regular square pyramid has a slant height of 5 in and a base area of 49 in2. Find the surface area of the pyramid. -----------
    7·1 answer
  • (5y² +4y -6)(3y - 9)
    11·1 answer
  • What is the mean to this
    5·1 answer
  • Answer plsssss i need 5 more
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!