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Irina-Kira [14]
3 years ago
13

9 Given: p + q = 25. r + s = 25. q = r. Prove: p=s

Mathematics
1 answer:
MrRissso [65]3 years ago
5 0

This is about simultaneous equations.

<u><em>p = s has been proved below. </em></u>

  • We are given;

p + q = 25  - - - (eq 1)

r + s = 25 - - - (eq 2)

q = r - - - (eq 3)

  • Let's put r for q in eq 1 to get;

p + r = 25 - - -(eq 4)

  • Let's subtract eq 2 from eq 4;

(p + r) - (r + s) = 25 - 25

p + r - r - s = 0

p - s = 0

p = s

Read more at; brainly.com/question/15165519

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Answer:

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Step-by-step explanation:

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You order plant seeds from a catalog. Each packet cost 0.90 each. The shipping charge is 2.50. If you have 18.50 to spend, how m
kramer
<h2>Answer:</h2>

17

<h2>Step-by-step explanation:</h2>

Cost per Packet * Number of Packets + Shipping =  Amount to Spend

0.90 * b + 2.50 = A

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A < 18.50

Rearrange the formula to find b

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You can't have 0.7 of a packet so you have to round down to 17.

Now if you put it into the original formula:

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4 0
3 years ago
Solve the system of linear equations by graphing, round the solution to the nearest tenth.
algol [13]
For this case we have the following system of equations:
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6 0
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Read 2 more answers
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vazorg [7]

Answer:

x = 13.75

Step-by-step explanation:

a right-angled triangle.

so, we use Pythagoras

c² = a² + b²

where c is the Hypotenuse (the side opposite of the 90 degree angle).

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17² = 10² + x²

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3 years ago
For f(x)=4x+1 and g(x) = x^2 - 5, find (f+g)(x).
Rus_ich [418]

Answer:

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Step-by-step explanation:

The statement (f + g)(x) is the same as f(x) + g(x). In other words, the question simply wants you to add the two functions together.

f(x) = 4x + 1

g(x) = x² - 5

(f + g)(x)                                  <----- Original statement

f(x) + g(x)                                <----- Rewrite

(4x + 1) + (x² - 5)                     <----- Substitute the equations in f(x) and g(x)

4x + x² - 4                              <----- Add 1 and -5

x² + 4x - 4                              <----- Rearrange the terms

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