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
mamaluj [8]
3 years ago
8

-4y=-20x+40 y+10=5x

Mathematics
1 answer:
mart [117]3 years ago
8 0

Answer:

infinitely many solutions

Step-by-step explanation:

We want to find solution to the system:

-4y=-20x+40

y+10=5x

We make y the subject in the second equation to get;

y=5x-10

We substitute y=5x-10 into the top equation to get:

- 4(5x - 10) =  - 20x + 40

We expand to obtain;

- 20x  + 40=  - 20x + 40

This implies that:

40 = 40

Therefore the system has infinitely many solutions.

You might be interested in
100 BRAINLY POINTS!!!
laila [671]

Answer:

  • C. Her sister grew about 0.75 inch each month.

Step-by-step explanation:

Given function:

  • y = 0.75x + 15

The function is linear and it represents:

  • y - current heigt of baby
  • x - number of months passed
  • 0.75 - the slope is the monthly growth rate
  • 15 - the y-intercept, is the initial height of baby

According the above explanation the correct answer choice is C

4 0
2 years ago
Read 2 more answers
In a group of 42 students, 9 study both Art and Biology.
LUCKY_DIMON [66]
Answer:
The probability the student studies Art and
Biology is 0.2143.
Step-by-step explanation:
Denote the events as follows:
A = a students studies Art
B= a students studies Biology
The information provided is:
N = 42
n (An B) = 9
n (A' n B) = 10
n (A' n B') =7
Then the number of students who study Art
but not Biology is:
n(An B') = N -n (An B) -n (A' nB) - n (A'n B')
= 42 - 10 - 7 - 9
= 16
The number of students who study Art but
not Biology is 16.
Compute the probability the student studies
Art and Biology as follows:
P(ANB)
n(ANB)
= 0.2143
Thus, the probability the student studies Art
and Biology is 0.2143.
3 0
2 years ago
On Monday, three hundred ninety - two students went on a trip to the zoo. All nine buses were filled and five students had to tr
Vikki [24]
The answer to your question is 43
5 0
3 years ago
What is the product in simplest form?<br><br><br> −89⋅56
kari74 [83]
The product would be -4984.
3 0
3 years ago
Read 2 more answers
Help pls this assignment has to be turned in by today
Papessa [141]

Answer:

v = 21

Step-by-step explanation:

the sum of the interior angles of a triangle is 180 degrees

add all 3 angle measures and set equal to 180:  

4v + 2v + 54 = 180

6v = 126

v = 21

4 0
3 years ago
Other questions:
  • Benjamin rents s storage unit that is shaped like a cube. There are 12 identical storage units in each row of the facility. If e
    10·2 answers
  • If two angles do not form a linear pair, then they are not adjacent angles. true or false?
    13·1 answer
  • Solve for h.-18 h = 28h =
    7·1 answer
  • there are 20% more goblins than wizards in magic club. There are 220 goblins and wizards all together in magic club. How many go
    14·2 answers
  • makenna rode her bike 6/10 mile in the morning and 23/100 mile in the afternoon. how far did she ride her bike in all?
    11·1 answer
  • C<br> 8 yd<br> 6 yd<br> What is the length of the hypotenuse?
    9·1 answer
  • Help me solve this pls
    6·1 answer
  • SALE
    15·1 answer
  • This is 8th grade math.
    8·2 answers
  • Need some math help. I tried but I’ve already done over fifty questions. Thanks!
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!