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
Zanzabum
3 years ago
11

Help please????????????

Mathematics
2 answers:
prisoha [69]3 years ago
7 0

Answer:

x=-8

Step-by-step explanation:

1) subtract the 2x-1 and that gives you 1x or just x by itself

2) subtract 4-12 and that gives you the answer for x

answer = -8

katen-ka-za [31]3 years ago
4 0

Answer:

a. 32.5

Step-by-step explanation:

You might be interested in
Joel made egg sandwiches and tuna sandwiches in the ratio 2:3. He then made 15 more tuna sandwiches and the ratio changed to 1:3
Aleksandr [31]

Answer:

40 sandwiches

Step-by-step explanation:

egg sandwiches : tuna sandwiches

 2                         : 3

Multiply by x  because we do not know how many sandwiches, just the ratio

2x                       : 3x


Add 15  tuna sandwiches

2x                       : 3x+15

Now the ratio is 1:3


egg sandwiches : tuna sandwiches

 1                         : 3

Multiply by y  because we do not know how many sandwiches, just the ratio

y                           : 3y


Set the number of egg sandwiches equal

2x =y

then set the number of tuna sandwiches equal

3x+15 = 3y

We know have a system of 2 equations and 2 unknowns

Substitute y =2x into the second equation

3x+15 = 3(2x)

Distribute

3x+15 = 6x

Subtract 3x from each side

3x-3x+15 = 6x-3x

15 =3x

Divide by 3

15/3 = 3x/3

5 =x


egg sandwiches : tuna sandwiches

 2                         : 3

Multiply by x  because we do not know how many sandwiches, just the ratio

2x                       : 3x

2*5                        3*5

10                             15


He originally made 10 egg sandwiches and 15 tuna sandwiches

Then he made 15 more tuna sandwiches

The total number of sandwiches he made is

10+15+15 = 40 sandwiches  




5 0
2 years ago
JJ decides to leave a tip that is 15% of the original price for his meal. How much should he leave as tip for the $5.50 cheesebu
Lady_Fox [76]

Answer: $9.20

Step-by-step explanation: To get the answer, you add both the cost and multiply it by .15. Then you add the product to the number you got adding the cost of the food.

4 0
3 years ago
Read 2 more answers
Find the radius and circumference of a CD with a diameter of 4.75 inches.
nexus9112 [7]
Radius is half of diameter.
Circumference can be found using the equation C=2(pi)r or C=(pi)d.
r=radius, d=diameter
(pi) is about 3.14 or 22/7
5 0
3 years ago
X≥1 x≤7 y≥-1/3x+6
Goshia [24]

Answer:

Step-by-step explanation:

i am unsure of what you actually need, but i want to help you.

if you were to set the boundaries of the feasibility region it would be as follows:

as points

A(1, 17/3)   B(7, 11/3)   C(7, infinity)   D(1, infinity)

as graphs

y=-1/3x+6 where 1≤x≤7

x=1

x=7

7 0
3 years ago
Read 2 more answers
If a wheel with a radius of 80 inches spins at a rate of 50 revolutions per minute, find the approximate linear velocity in mile
Lubov Fominskaja [6]
\bf \textit{arc's length}\\\\
s=rw\qquad 
\begin{cases}
r=radius\\
w=\textit{angular speed}
\end{cases}\qquad w=\cfrac{50 rev}{min}\cdot \cfrac{2\pi }{rev}
\\\\\\
w=\cfrac{100\pi }{min}\qquad s=80in\cdot \cfrac{100\pi }{min}\implies s=\cfrac{8000\pi\  in}{min}\\\\
-------------------------------\\\\
\textit{now to convert it to miles/hr}
\\\\\\
\cfrac{8000\pi\ in}{min}\cdot \cfrac{ft}{12in}\cdot \cfrac{mile}{5280ft}\cdot \cfrac{60min}{hr}\implies \cfrac{8000\pi \cdot 60\ in}{12\cdot 5280\ hr}
3 0
3 years ago
Other questions:
  • Triangle ABC was translated according to the rule
    11·2 answers
  • Which trig function could be used to find the measure of angle c if ab and ac are given which equation would used to find the he
    12·1 answer
  • Hans is staining the wooden floor of a court. The court is in the shape of a rectangle. Its length is feet and its width is feet
    7·1 answer
  • Cassidy has saved $8,000 this year in an account that earns 9% interest annually. Based on the rule of 72, it will take about ye
    13·1 answer
  • Your boss hands you the monthly data that show the number of orders coming in to and out of the warehouse. The data are in the t
    10·1 answer
  • Can the positive integer p be expressed as the product of two integers, each of which is greater than 1?
    15·1 answer
  • What is 1/2x-3y-4=0 written in standard form
    14·1 answer
  • If the circumference of a circle measures 8π cm, what is the area of the circle in terms of π?
    5·1 answer
  • The area of a triangle is 80 square inches. The base of the triangle is 16 in.
    7·1 answer
  • A spaceship to the moon covered the 386,400 km in 72 hours. What was the average speed?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!