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
Mandarinka [93]
3 years ago
12

.8x-.3y=5 1.4x-.9y=11

Mathematics
1 answer:
PolarNik [594]3 years ago
6 0

Answer:

(x,y)=(-22/49,-5566/147)

Step-by-step explanation:

You might be interested in
Five trucks are to be transported on a ship. Each one weighs 3200 kg and comes
RideAnS [48]

Total No of trucks: 5

Weight of trucks: 3200Kg

Total weight of trucks: 3200×5

= 16000kg

Total no of tyres = 5 ×8

= 40

Weight of each tyre = 125kg

Total weight of tyres = 125 × 40

= 5000Kg

The total weight of trucks and tyres: 16000 + 5000

= 21000Kg

Answered by Gauthmath must click thanks and mark brainliest

4 0
3 years ago
A. 67 B. 135 C. 75 D. 150
dolphi86 [110]
The awnser is B because 33% is 1/3 of 100% so if you do 45×3=135
6 0
3 years ago
This is about the cone formula. If you don't know it, please don't answer. If you do, PLEASE ANSWER.
lions [1.4K]

9514 1404 393

Answer:

  (b)  10.5 in

Step-by-step explanation:

The formula for the volume of a cone is ...

  V = 1/3πr²h . . . . . . for radius r and height h

Then the height is ...

  h = 3V/(πr²)

Your cone has a volume V = 199 in³ and radius r = 4.25 in, so the height is ...

  h = 3(199 in³)/(π(4.25 in)²) ≈ 10.52 in

The height of the cone is about 10.5 inches.

6 0
3 years ago
An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 50 g of an alloy containing 12% copper with 78 g
givi [52]

Given :

An alloy is a mixture of metals. Suppose that a certain alloy is made by mixing 50 g of an alloy containing 12% copper with 78 g of an alloy containing 92% copper.

To Find :

How many grams of copper are in the resulting mixture what percentage of the resulting mixture is copper.

Solution :

Mass of copper in 50 gm alloy = 50\times 0.12 = 6\ gram.

Mass of copper in 78 gm alloy = 78\times 0.98 = 76.44\ gram.

Total mass of copper, ( 6 + 76.44 ) gm = 82.44 gram.

Percentage of copper in resulting mixture :

\%=\dfrac{82.44}{50+78}\\\\\%=64.4\ \%

Hence, this is the required solution.

8 0
4 years ago
What happens when a rational number is added to an irrational number
Whitepunk [10]

The answer to your question is,

Each time they assume the sum is rational; however, upon rearranging the terms of their equation, they get a contradiction (that an irrational number is equal to a rational number). Since the assumption that the sum of a rational and irrational number is rational leads to a contradiction, the sum must be irrational.

-Mabel <3

6 0
3 years ago
Other questions:
  • Ava works at a florist shop. she earns $7.50 an hour plus a fixed bonus for each bouqet she arranges.write an equation to determ
    10·1 answer
  • I need the answer this is the last question
    12·2 answers
  • Jarvis is planning a birthday party for his little brother. He buys 10 toy cars for $3 each and 10 chocolates for $1 each to be
    11·1 answer
  • A recipie calls for 2 3/4 cups of milk. How many cups of milk,written asa fraction greater than one,are used in the recipie.
    14·2 answers
  • Como simplifico la fracción 75/1746
    14·1 answer
  • A group of friends were working on a student film. They spent all their budget on costumes and equipment. They spent $396 on cos
    15·1 answer
  • chris and Michelle are professional divers. During one of their dives, Chris goes 40 meters below the surface of the water, and
    9·1 answer
  • There are 14 boys and 13 girls in a class. Write the ratio of boys<br> to girls.
    12·2 answers
  • Given the position of 2 points of a triangle with the lengths of all side and angle of each side how can you find the 3rd positi
    14·1 answer
  • Two stores sell CDs in packages, as shown in the table below. Number of CDs in Package Cost Number of CDs in Package Cost CD Pri
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!