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
andre [41]
3 years ago
11

Solve the following system by the substitution method 0.1x + 0.8y = - 5.1 , 0.4x- 0.9y = 8.3

Mathematics
1 answer:
Sav [38]3 years ago
6 0
I hope you can read cursive! And I hope this helps! (:

You might be interested in
If there is a 10% chance of sun tomorrow and a 20% chance of wind and no sun, what is the probability that it is windy, given th
professor190 [17]
Since there are two events happening simultaneously (windy and no sun), we can apply the concept of conditional probability here. P(A|B) = P(A∩B)/P(B) where it means that given B is happening, the probability that A is happening as well is the ratio of the chance for A and B to happen simultaneously over the chance of B to happen. For our case, this can be interpreted as P(A|B): it is the probability that it is windy (A) GIVEN that there is no sun (B) P(A∩B) : chance of wind and no sun P(B) : chance that there is no sun tomorrow The chance of P(A∩B) is already given as 20% or 0.20. Since there is 10% or 0.10 chance of sun, then chances of having no sun tomorrow is (1-0.10) = 0.90. Thus, we have P(A|B) = 0.2/0.9 ≈ 0.22 or 22%. So, answer is B: 22%<span>.</span>
5 0
3 years ago
Read 2 more answers
A rectangle has length 72 cm and width 56 cm. The other rectangle has the same area as this one, but its width is 21 cm. What is
Ira Lisetskai [31]

The length of the rectangle is = 72 cm

The width of the rectangle is = 56 cm

Area of the rectangle is = length*width

= 72\times56=4032 cm²

As given, the other rectangle has the same area as this one, but its width is 21 cm.

Let the length here be = x

4032=x*21

x=\frac{4032}{21}=192

Hence, length is 192 cm.

We can see that as width decreases, the length increases if area is constant and when length decreases then width increases if area is constant.

So, in the new rectangle,constant of variation=k is given by,

\frac{192}{72}=\frac{8}{3} or \frac{56}{21}=\frac{8}{3}

Hence, the constant of variation is \frac{8}{3}

7 0
3 years ago
Is this a function or not
s344n2d4d5 [400]

this equation is not funcion.

Step-by-step explanation:

if u make a graph and u aline them with dots 2 or more dots will cross each other witch makes it not function:)

8 0
3 years ago
PLEASE HELP I WILL GIVE BRAINLIST IF ITS RIGHT
kogti [31]

Answer:

49/4 inches

Step-by-step explanation:

Inches below ground=  3 1/2 inches

Plant's full  height=15 3/4 inches

Height above ground = 15 3/4 inches -3 1/2 inches

63/4 - 7/2

63-14/4

49/4 inches

5 0
3 years ago
Read 2 more answers
Mary is melting a rectangular block of wax that measures 10 cm×9 cm×20 cm. Determine how many candles she can make of the follow
Rashid [163]

Answer:

7

Step-by-step explanation:

https://www.numerade.com/questions/reasoning-in-exercises-35-and-36-you-are-melting-a-rectangular-block-of-wax-to-make-candles-how-ma-2/

This link lets you access a video for the correct answer

4 0
3 years ago
Other questions:
  • To make a profit, Ethan knows that his prime cost of producing a part must be no more than $189.27. It takes 2 hours for a machi
    5·1 answer
  • find the equation of the linear function which passes through the points (1,-3) and (4,-2) give your answer in y=mx+b form
    9·1 answer
  • Can someone please tell me the answers!?!?! It’s due today! (I’ll give brainliest to the one who is right)
    7·2 answers
  • Don typically works 30 hours per week and earns $13.25 per hour. He is scheduled for a 3% pay increase next month. What will be
    10·2 answers
  • Is this correct if not which one is and why
    13·1 answer
  • A dog's leash is 8 feet long. The owner estimates that their hand is 3 feet off the ground. The leash is not parallel to the gro
    8·1 answer
  • PLEASE HELP ASAP This probability distribution shows the
    12·1 answer
  • Learning Task 1: Write and answer the following in your answer sheet
    6·1 answer
  • Find the measure of each interior angle of the regular polygon.
    15·1 answer
  • Find all natural numbers n such that 1+3+5+7+...+(2n-1) sum is divisible by 4
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!