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
Arte-miy333 [17]
3 years ago
11

X^2+y^2=49 , y=7-x solve it in substitution

Mathematics
1 answer:
pashok25 [27]3 years ago
3 0
X^2+(7-x)^2=49
x^2+x^2-14x+49=49
2x^2-14x=0
2x(x-7)=0
x=0, x=7
You might be interested in
How do I solve this?
Olin [163]
Well if it is 1 inch per 100 feet, then we already know that 600 feet is 6 inches on the map. Now the 4 is where it gets trickier. Since it's dividing it by 100 each time, you take 4 and divide it by 100 which is 0.04. Therefore, your answer is 6.04 inches on the map.
6 0
3 years ago
You are applying fertilizer to a football field. The field is 360 feet long and 160 feet wide. You use 8 pounds of fertilizer pe
Agata [3.3K]
10 bags of fertilizer for the field
8 0
3 years ago
Read 2 more answers
In one school, a half of all students who like math like science as well. Also, in that school, a third of all students who like
Marizza181 [45]

Answer: 2/3

Step-by-step explanation:

N is the total number of students

M is the number of students thta like math

S is the number of students that like science.

We know that half of the elements in M also are elements from S

And a third of the elements of S also are elements of M

And because those elements are common elements for both sets, we should have that:

M/2 = S/3

then we have that:

M = (2/3)*S

The ratio is 2/3

this means that the number of students that like math is 2/3 times the number of students that like science.

6 0
3 years ago
Read 2 more answers
What is equivalent to 2x-17
Bad White [126]
Get photo math an app just for math it gives u the answers and how to solve it
8 0
3 years ago
Answer this please i don't really understand it so help me please lol.
expeople1 [14]

Answer:

11

Step-by-step explanation:

Step 1:

( 9 - 3 ) + 20 ÷ 4   Equation

Step 2:

6 + 20 ÷ 4     Subtract

Step 3:

6 + 5   Divide

Answer:

11    Add

<u>PEMDAS:</u>

<u>1. Parenthesis</u>

<u>2. Exponents</u>

<u>3. Multiplication</u>

<u>4. Division</u>

<u>5. Addition</u>

<u>6. Subtraction</u>

<u />

Hope This Helps :)

<u />

8 0
3 years ago
Read 2 more answers
Other questions:
  • A family of two adults and three children goes to a play admission costs eight dollars per adult and $5 per child. What expressi
    15·1 answer
  • If a convex polyhedron has 12 edges and 8 faces, then how many vertices does it have?
    13·2 answers
  • Which equation is true for the value b = 2? 2b + 24 = 30 3b − 2 = 4 b + 4 = 8 2b − 3 = 0
    13·1 answer
  • Write a story problem for the additional sentence 7 +2=9
    10·2 answers
  • Please help me with this question 7th grade
    10·2 answers
  • A quarter is 1.75mm . How's tall is a $20 stack of quarter
    8·1 answer
  • Find three consecutive interferes whose sum is 96
    9·1 answer
  • Thelearningodyssey.com/gatekeeper.aspx?INTERNAL=SESSION
    6·1 answer
  • Use f(x) = 2x g(x) = 3x - 1<br> h(x)<br> 2<br> + 2x<br> - 3 then find each value.
    5·1 answer
  • There are approximately Pi times 10,000,000 seconds in one ____?
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!