answer.
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
Viktor [21]
2 years ago
9

Solve the system of equations. 2.5y + 3x = 27 5x – 2.5y = 5 What equation is the result of adding the two equations? –8x = 328x

= 325y + 8x = 328x – 5y = 32 What is the solution to the system? (–4, 6)(–2.75, 8.6)(2.75, 3.5)(4, 6)

Mathematics
2 answers:
galben [10]2 years ago
4 0
A) The result of adding the two equations is
.. (2.5y +3x) +(5x -2.5y) = (27) +(5)
.. 8x = 32 . . . . . . . . . . . . . . . . . . . . . . . your 2nd selection

b) The solution to the system is (4, 6), your 4th selection.
.. This is the only choice with x=4, the solution to part (a).

nikitadnepr [17]2 years ago
3 0

Answer:

8x=32

(4,6)

Step-by-step explanation:

You might be interested in
Which statements are true about the reflectional symmetry of a regular heptagon? Check all that apply. It has only 1 line of ref
Sav [38]

The answer is:

1- A line of symmetry will connect a vertex and a midpoint of an opposite side.

2- It has 7-fold symmetry.

The explanation for this answer is shown below:

1- By definition, a line of symmetry is an imaginary line that divides a figure into two equal images or equal halves. If you connect a vertex and a midpoint of an opposite side of an heptagon by drawing a line, you will obtain two equal halves.

2- An heptagon has seven vertices, therefore, based on the information mentioned above, it has 7-fold symmetry.

8 0
2 years ago
Read 2 more answers
One pound of grapes costs $1.55. Which equation correctly shows a pair of equivalent ratios that can be used to find the cost of
Shalnov [3]

Answer:

StartFraction 1.55 over 1 EndFraction = StartFraction 3.5 over x EndFraction

Step-by-step explanation:

1 = 1.55

x = 3.5

1.55/1 =3.5/x

1.55/1 = 3.5/x correctly shows the equivalent ratios

5 0
2 years ago
Read 2 more answers
Suppose that 3% of all athletes are using the endurance-enhancing hormone EPO (you should be able to simply compute the percenta
trapecia [35]

Answer:

Step-by-step explanation:

So there is a 3% probability that an athlete is using EPO .

The probability of showing positive on a test when you've used it is 0.99.

3% x 0.99= 2.97%

The probability of a positive result without EPO is 0.1

97% x 0,1 = 9,7 %

My guess is that 2.97% + 9,7% = 12.67% or 0.1267.

I don't know i may be wrong because you've put as an answer 0.0297 but if you like you may take only the first part of the answer.

6 0
2 years ago
Zucchini plants require 9 square feet around each plant.
MrRa [10]
The area of square TUVW = 3×3 = 9 square units

1 square unit = 4 head lettuces
9 square units = 9×4 = 36 lettuces

Area of plot QRST = length × width = 12×6 = 72 square units

36 vegetables for every 9 square units
We have 72÷9 = 8 lots of 9 square units

Total vegetable = 8 × 36 = 288 vegetables

We can have 8 different vegetables, each type can have 36 vegetables
4 0
2 years ago
a recipe uses 1 1/4 cups of milk to make 10 servings. if the same amount of milk is used for each serving, how many servings can
Anestetic [448]

Answer:

128 servings can be made using 1 gallon of milk.

Step-by-step explanation:

Given that:

1\frac{1}{4} cups of milk make 10 servings

1\frac{1}{4} can also be written as 1.25

Ratio of cups of milk to servings = 1.25 : 10

1 gallon = 16 cups

Let,

x be the number of servings made from 1 gallon

Ratio of cups of milk to servings = 16 : x

This is a direct proportion

1.25 : 10 :: 16 : x

Product of mean = Product of extreme

10*16 = 1.25x

160 = 1.25x

1.25x=160

Dividing both sides by 1.25

\frac{1.25x}{1.25}=\frac{160}{1.25}\\x=128

Hence,

128 servings can be made using 1 gallon of milk.

3 0
2 years ago
Other questions:
  • Connor bought 30 shares of eBay at $20.95. A year later, he bought 20 more shares at $26.75. He later sold all of his shares at
    5·2 answers
  • Betsy works as waitress. Today she worked an 8 hour shift, and was paid $ 92.00. Plot a graph of the amount Betsy earns against
    9·2 answers
  • Find the 89th term of the arithmetic sequence -16 -3 10
    7·1 answer
  • if the total precipitation (rainfall and snow) for the year at a mountain town is expected to be 37.9 and it has already rained
    14·1 answer
  • According to a report in USAToday, more and more parents are helping their young adult children get homes. Suppose eight persons
    13·1 answer
  • L'età media di Aldo, Bruno, Carlo e Davide è 16 anni. Se non si tiene conto di Davide, l'età media dei tre rimanenti sale a 18.
    5·1 answer
  • What number should be added to both sides of the equation to complete the square? x2 + 3x = 6 (StartFraction 3 Over 2 EndFractio
    13·2 answers
  • An inspector checks 98 cell phones and finds 2 of them not working. If a company
    15·1 answer
  • Un consejo de estudiantes de un colegio de bachillerato tiene un representante de cada grado. Si cada uno de los miembros del co
    5·1 answer
  • Triangle A B C is shown with its exterior angles. Line C B extends through point D. Line B C extends to form exterior angle that
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!