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Serjik [45]
3 years ago
9

Evaluate 8r-rs when r=6 and s=5

Mathematics
2 answers:
MAVERICK [17]3 years ago
6 0

Answer:

18

Step-by-step explanation:

Given the expression 8r - rs and the values for r and s being 6 and 5, respectively, we can substitute the variables with the values to determine the solution to the expression.

8r - rs    (Substitute)

= 8(6) - (6)(5)    (Simplify)

= 48 - 30

= 18

Nadya [2.5K]3 years ago
6 0

Steps to solve:

8r - rs; r = 6 and s = 5

~Substitute

8(6) - (6)(5)

~Simplify

48 - 30

~Subtract

18

Best of Luck!

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hram777 [196]

Answer:

<h2>S = 9/20</h2><h2>J = 113/50</h2>

Step-by-step explanation:

5J +2S =12.20 ........(1)\\5J+10S=15.80......(2)\\Multiply \:equation \:(1)\:by\:the\:coefficient\:of\:x\:in equation\:(2)\\\\Multiply\:equation(2)\: by\: the\: coefficient\:of \:x\: in \:equation (1)\\\\5J +2S =12.20 ........(1) \times 5\\5J+10S=15.80......(2)\times 5\\\\25J+10S=61......(3)\\25J+50S = 79......(4)\\Subtract\:equation\:(4)\:from\: equation\: (3)\\-40S =-18\\\frac{-40S}{-40}=\frac{-18}{-40}\\  S = 9/20\\

Substitute \:9/20\:for \:x \:in\:equation\:(1)\:or \:equation\:(2)\\5J+2S = 12.20\\5J +2(9/20) =12.20\\5J +9/10=12.20\\5J=12.20-9/10\\5J=113/10\\Cross-Multiply\\50J = 113\\J = 113/50

4 0
3 years ago
What is the fraction 25/30 in simplest form
Anuta_ua [19.1K]

\frac{5}{6}

To simplify the fraction, divide the numerator / denominator ( cancel ) by the highest common factor of 25 and 30, that is 5

\frac{25}{30} = \frac{5}{6} in simplest form


5 0
3 years ago
Question 2 of 10<br> What is the surface area of the rectangular pyramid below?
Ymorist [56]

Answer:

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Step-by-step explanation:

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((11x11)÷2)x4=11x11x2=121x2=242

121+242=363

5 0
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dybincka [34]

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6 x +4 + 10x - 9 + 8x - 7=
trasher [3.6K]

Answer:

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Step-by-step explanation:

6x + 4 + 10x - 9 + 8x - 7

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24x - 12

6 0
2 years ago
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