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IgorLugansk [536]
3 years ago
15

How do you solve this using substitution -8x-y=-30 Y=12x-50

Mathematics
1 answer:
never [62]3 years ago
7 0

Step-by-step explanation:

substitude the y value into y in the first equation

-8-(12x-50)=30

-8-12x+50=30

you see it?

then solve

-8+50-30=12x

you got the value = 12x

then you divide with 12

finally you get x

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a store mixes red fescue worth $12 per pound and chewings fescue worth $16 per pound. The mixture is to sell for $15 per pound.
nlexa [21]

<span>Answer is: 414 pounds of red fescue and 138 pounds of chewings fescue is needed to produce 552 pounds of mixture.</span>

<span>Explanation:
x - how much of red fescue is needed for one pound of mixture
y - how much of chewings fescue is needed for one pound of mixture</span>x*12+ y*16 = 15<span>x + y = 1
so, x=1-y
putting it into first line:</span><span>(1-y)*12 + y*16 = 15
12 - 12*y + 16*y = 15
4*y = 3
y=3/4
so, x= 1-3/4; x=1/4</span>So to produce 552 pounds of mixture we need..<span>To produce 1 pound of mixture we need: 3/4 pound of red fescue and 1/4 pound of chewing fescue so to produce 552 pounds of miture we need:
552*3/4 - red fescue, which is 414 pounds needed
and
552/4 - chewings fescue, which is 138 pounds needed</span>

5 0
3 years ago
Read 2 more answers
Write the following numbers in standard form 1 . 8000 + 900 + 20 + 5 2 . 1000 + 400 + 4 3 . 5000 + 500 + 5
telo118 [61]

Answer:

534

Step-by-step explanation:

8 0
2 years ago
Which expression is equivalent to 36÷3+3 ?
VARVARA [1.3K]
D is the you looking have a nice day 
7 0
3 years ago
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You and a friend are going bowling. Renting shoes and the first game of bowling costs $7.50 for each person. If each
zlopas [31]

Answer:

A) The cost of playing n games of bowling is C(n) = $7.50 + (n - 1) . $2.50

Step-by-step explanation:

The cost of first game of bowling  for each person  = $7.50

Cost after first game per person = $2.50

Total  number of games played = n

According to the question:

Total cost of playing n  games  =  Cost of first game +  {(n-1) x  Cost after first game}

or, C(n) = $7.50 + (n-1)$2.50

Hence, the cost of playing n games of bowling is

C(n) = $7.50 + (n - 1) . $2.50

7 0
2 years ago
4. Find the value of x.<br> (4x - 101)<br> (2x+3)
Tanzania [10]

Answer:

bro there should be a value or a final answer of the question then only we can find the value

Step-by-step explanation:

hope it helps you

please mark me as brainlist

8 0
3 years ago
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