1answer.
Меню
Ask question
Login
Signup
Ask question
Menu
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
Nikitich
[7]
3 years ago
9
Solve for both systems: y+7z=22 and 8y + 7z = 127
Mathematics
Answer
Comment
Send
2
answers:
7nadin3
[17]
3 years ago
5
0
Manipulate the first equation to
y = 22-7z
Then substitute in the second to find z
8(22-7z) + 7z = 127
176-56z+7z = 127
-49z = -49
z = 1
So y = 22-7(1) = 22-7 = 15
y = 15; z = 1
Send
Zielflug
[23.3K]
3 years ago
5
0
This is easy, one way is to subsitute
y+7z=22 and
8y+7z=127
y+7z=22
subtract y
7z=22-y
8y+7z=127
subtract 8y
7z=127-8y
subsitute
22-y=7z=127-8y
22-y=127-8y
add y to both sides
22=127-7y
subtract 127
-105=-7y
divide by 7
15=y
subsitute
15+7z=22
subtract 15
7z=7
divide 7
z=1
y=15
z=1
Send
You might be interested in
System of equation x 3y=9 y=x-1
olga2289 [7]
<span>x + 3y = 9
-x + y = -1
X = 3
Y = 2
</span>
8
0
3 years ago
I also need help with this one
solmaris [256]
The amount of pizza Mark would have is
Find the common denominators first. 2/12 + 3/12 = 5/12. Two slices of the 6 slice pizza is 1/3 or 4/12.
6
0
3 years ago
100 POINTS
Svet_ta [14]
Answer:
The Great Depression
EASY
3
0
3 years ago
5% sales tax on a $81.08 bookcase
mafiozo [28]
81.08 * .05 = 4.054
$4.05
3
0
3 years ago
Devon’s free-throw average for basketball is 60%. Predict how many times in the next 50 tries he will make a free throw.
Maru [420]
Answer:
30
Step-by-step explanation:
3
0
3 years ago
Other questions:
Absolote value x=6. any help
11
·
1 answer
hot dog buns come in package of 8. for the school picnic,Mr spencer bought 30 packages of hot dogs buns. how many hot dog buns d
9
·
2 answers
The temperature of a freezer started at 18ºC. After cooling for a few hours, the freezer had a temperature of –12ºC. What is the
13
·
2 answers
Solve for m.<br> 8m+95<−87m+5
14
·
2 answers
Lee spent $36 to purchase a combination of drinks, sandwiches, and chips for himself and his friends. A drink costs $2, a sandwi
10
·
1 answer
Which graph represents the function f(x) = 2x?
6
·
1 answer
Guys please help i’m nearly on 23% and i need to get to 82%- giving brainlest
6
·
2 answers
OK im officially confusion.........
15
·
1 answer
Change .0875 to a percent.<br><br> a 8.75<br> b .875<br> c 87.5<br> d 875
12
·
1 answer
A bookstore owner is conducting market research to forecast sales for the coming year. The bookstore is open 360 days a year and
10
·
1 answer
×
Add answer
Send
×
Login
E-mail
Password
Remember me
Login
Not registered?
Fast signup
×
Signup
Your nickname
E-mail
Password
Signup
close
Login
Signup
Ask question!