Answers
After substitution in the first equation :
7x + x +21 = -19
= 8x + 21 = -19
by subtracting 21 :
8x = -19 - 21
8x = -40
by dividing over 8 :
x = -5
after substitution in the second equation :
2y = -5 + 21
2y = 16
by dividing over 2 :
y = 8
pls give me brainliest
Related Questions
regla de correspondencia de f(x)=5x+4
Answers
Answer:
Step-by-step explanation:
Regla why f = 5x +4. Question
What is the equation of the line that has a slope of 3 and goes through the point (-3,-5)?
A.
y = 3x + 4
B.
y = 3x − 14
C.
y = 3x − 4
D.
y = 3x + 12
Answers
Answer:
A
Step-by-step explanation:
Answer:
A. y=3x+4
Step-by-step explanation:
(y+5)=3(x+3)
y+5=3x+9
y=3x+9-5
y=3x+4
The estimated distance is 60 miles, but the actual distance is 75 miles. Find the percent error.
Answers
Answer:
20
Step-by-step explanation:
75-60=15
15÷75=.20
20 per cent error
Nicola used 25% of the milk she collected from her goats this morning to make cheese. If she has 8.4 quarts of milk left over, how many quarts of milk did she collect this morning?
PLEASE HELP WORTH 35 POINTS
Answers
Answer:
11.2
Step-by-step explanation:
The answer is 11.2
11.2*.25=2.8
11.2-2.8=8.4
Hope this helps <3
simplify the expression: 4(-4+n) =
Answers
Just have to simplify
It took 30 minutes to drive 45 miles.
At this rate, how long will it take to drive 15 miles?
Answers
Answer:0.43 hours
Step-by-step explanation:
15
miles
35
miles
hour
=
5
⋅
3
5
⋅
7
hours
=
3
7
hours
=
0.43
hours
200:40 simplest form
Answers
Hope this helps:)
Answer:
5:1
Step-by-step explanation:
Divide by 40
What is 1,000=850+0.2p
Answers
Hope this helps!!
Which graph represents a function?
Answers
Answer:
the bottom right one
Step-by-step explanation:
it does not overlap so it is a function. What you can do is drag a pencil over it and if there are not 2 lines touching the pencil thebwhole waybit is a function
help please will give brainliest
Answers
Answer:
i think its c not sure
Step-by-step explanation:
Ayúdenme porfis, es para ahorita
Answers
Answer:
encuentra el área de siguiente modelo geométrico
Step-by-step explanation:
es la A porque da un total de X² + 21x+121
1. 1/6+1/3=? Your answer
Answers
Answer:
1/2
Step-by-step explanation:
What is (0.3)⋅(0.5)?
Answers
Answer:
0.15
Step-by-step explanation:
y=-2/3x+1
how do you find the slope and y intercept
Answers
Answer:
The slope is -2/3 and the y intercept is 1
Step-by-step explanation:
The slope intercept form of a line is
y = mx+b where m is the slope and b is the y intercept
y = -2/3 x+1
The slope is -2/3 and the y intercept is 1
Choose the most appropriate name for the function described below.
Your probability of winning the lottery depends on how many tickets you buy.
A. Tickets(probability), or (p)
B. Lottery(tickets), or L(t)
C. Probability(tickets), or P(t)
D. Probability(lottery), or P(I) NEED HELPP
Answers
Answer: C
Step-by-step explanation:
it's due in a few minutes, ill pay $5 on cashapp, and give you brainliest if your answer is right. just drop ur cash app.. helppp
Calculate the wavelength of a space shuttle with a mass of 2.05 x 107kg traveling at a rate of 7.85 x 103 m/s.
Answers
Answer:nunya
Step-by-step explanation:
The estimate obtained from a sample of which size is likely to be closest to the actual parameter value of a population?
Answers
Answer:
184
Step-by-step explanation:
Answer: 184
Step-by-step explanation:
A P E X
A toy rocket lifts off at an initial velocity of 102 feet per second from a height of 10 feet. The height of the rocket can be modeled by the equation h = – 16t2 + 102t + 10, where ‘t' is the time in seconds. When will the rocket hit to the ground?
Answers
Answer:
6.47secs
Step-by-step explanation:
Given the height of the rocket modelled by the equation;
h = – 16t^2 + 102t + 10, where ‘t' is the time in seconds
The rocket will hit the ground at h = 0
Substitute into the equation
– 16t^2 + 102t + 10 = 0
Multiply through by -1
16t^2-102t-10 = 0
t = 102±√(102)²-4(16)(-10)/2(16)
t = 102±√10404+640/32
t = 102±√11044/32
t = 102 ±105.09/32
t = 102+105.09/32
t = 207.09/32
t = 6.47secs
Hence it will take 6.47secs for the rocket to hit the ground
What is the area of this face?
12in²
15in²
16in²
17in²
Answers
the highlighted face is a square
the area of a square is length X width
the length is 4in and the width is 4in
so it would be 4 X 4 which is 16
Please help with actual steps, and don’t reply w nonsense just for the points. Thank you !!!
Answers
Answer:
1. 24x^6
3. -15^10
5. 90x^5y^6
7. 40x^12y^18
9. 72x^12y^18
add exponents since we're multiplying then multiply the numbers and put the letters in order
please help quick!! pythagorean theorem!
Answers
Answer:
hmmmmm not sure
Step-by-step explanation:
Edwin has $50.00 in his bank. He starts spending $2.50 each week on snacks at lunch graph it
Answers
Answer: 50.00 - 2.50 each week
Answer:
Step-by-step explanation:
First label the x axis as "Time (Weeks)" and y axis as "money in the bank account". The x axis should go by 1. As in the squares being, 1,2,3, etc. The y axis should go by 5's and end at 50. Plant a dot at coordinates (0,50) and continue by subtracting $2.5 per week. So the next coordinates should be (1, 47.5). In the end, there should be $25 left in the account (after using all of the boxes).
Write the expression in its simplest form : -3 (7h+1)+6h
Answers
Answer:
-15h-3
Step-by-step explanation:
hope this answers an option yk
Answer: =−15h−3
Step-by-step explanation: hope this help
Jada made 6 cups of blueberry jam and divided the jam equally among 4 containers. How much jam went in each container? Have it as a fraction
Answers
Answer:the answer is 3/2
Step-by-step explanation:
A fraction is written in the form of a numerator and a denominator where the denominator is greater than the numerator.
Dividing equally 6 cups of jams into 4 containers.
= 1.5 cups / 1 container
The amount of jam in each container is 1.5 cups of jams.
What is a fraction?A fraction is written in the form of a numerator and a denominator where the denominator is greater than the numerator.
Example: 1/2, 1/3 is a fraction.
We have,
Jada made 6 cups of blueberry jam and divided the jam equally among 4 containers.
The amount of jam in each container.
= 6 cups / 4 container
= 1.5 cups / 1 container
This means that in each container there are 1.5 cups of jams.
Thus,
Dividing equally 6 cups of jams into 4 containers.
1.5 cups / 1 container
The amount of jam in each container is 1.5 cups of jams.
Learn more about fractions here:
https://brainly.com/question/24370499
#SPJ6
What is the Area and Perimeter for tbe rectangle?
Answers
length of rectangle = ( 4n-5 )
breadth of rectangle = ( 3n-2)
To find :-Area and perimeter of rectangle.
solution :-by the question ,
We know the area of rectangle = length × breadth
Area = (4n -5) (3n-2)
[tex] = {12n}^{2} - 8n - 15n + 10[/tex]
[tex] = {12n}^{2} - 23n + 10[/tex]
now ,
perimeter = 2 ( length + breadth (
= 2 ( 4n-5 + 3n-2)
= 2 ( 7n-7)
= 14n -14
I hopes this helps.
...............................................................................
Answers
Answer:
-1,3,5,9is a required answer.
Help me for brainliest ✅✅✅✅✅✅✅✅
Answers
Answer:
y=-2x-3
Step-by-step explanation:
If Rachel purchased a prepaid phone card for $25. Long distance calls cost 24 cents a minute using the card. Rachel used her card only once to make a long distance call. If the remaining credit on her card is $19.24 how many minutes did the call last?
Answers
Answer:
24 minutes
Step-by-step explanation:
25- 19.24= $5.76 used so....
$5.76/ 0.24cents = 24 minutes
The system shown has one solution; convince me that the solution exists
without solving it or graphing it?
2x - y = 5
x + 3y = -8
Answers
Answer:
(1, -3)
Step-by-step explanation:
4x = -20 Solve for x
Answers
Answer:
x = -5
Step-by-step explanation:
x = -20/4 = -5
Answer:
4x=-20
x= -20/4
x= -5
........................