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
klasskru [66]
3 years ago
8

Substitution method x=-y 8x+3y=40

Mathematics
2 answers:
Pachacha [2.7K]3 years ago
6 0
Plug in -y for x in the equation
8(-y) + 3y = 40
5y = 40
y = 8
Delvig [45]3 years ago
4 0
The answer would be 16
You might be interested in
Jessica scores 1825 on the sat. ashley scores 28 on the act assuming that both tests measure the same thing who has the higher s
SOVA2 [1]
<span>With 1026 being the mean score on the SAT and StDev of 209, Jessica has a score of 799/209 z-scores above the mean. Her z-score would be 3.823. The mean of the ACT and StDev are 20.8 and 4.8, respectively. A 28 ACT score would be 7.2/4.8 z-scores above the mean, for a z = 1.500. This means that Jessica has the higher z-score.</span>
5 0
3 years ago
Que nùmero multiplicado por 9,000=1,800,000​
ss7ja [257]

Answer:

200

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
A) Work out the value of 19 + 7 divided by 2-5
agasfer [191]

Answer: -8.66666666667

Step-by-step explanation: Do it step by step. So 19+7= 26

Then 2-5= 3

So 26 divided by -3 = -8.66666666667

8 0
3 years ago
How do I find the Area of a Cylinder
Mandarinka [93]

Answer:

A=2πrh+2πr^2

Step-by-step explanation:

6 0
3 years ago
A local carpet company has been hired to carpet a planetarium which is in the shape of a circle. If the radius of the planetariu
lapo4ka [179]
This is the concept of application of geometry and financial mathematics; To calculate for the total cost of the carpet we proceed as follows;
Total cost=[area of the carpet]*[price per square yard]
area of carpet is given by:
Area=πr^2
where;
radius,r=6 yeards
=π*6^2
=113.1 square yards
therefore the price of the carpet will be:
113.1*14
=$1,583.4
5 0
3 years ago
Other questions:
  • How many millilitres of coconut milk will be required to make this recipe for seven people?
    7·1 answer
  • Visit CK12.org for Free Online Practice
    12·1 answer
  • Evaluate 4(5*1÷20) name the property used in each step​
    12·1 answer
  • What is 4÷92=,6÷58= in axon math
    15·1 answer
  • Tan145+tan85/1-tan145*tan85 as asingle funciton
    9·1 answer
  • SAS Similarity Theorem
    14·2 answers
  • ^DEF and ^RSQ are shown in the diagram below
    13·1 answer
  • Hr
    5·2 answers
  • Nces
    7·1 answer
  • Which ratio is equivalent to 4 : 10 choose all that apply
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!