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choli [55]
3 years ago
7

Which of these shows the result of using the first equations to substitute or y in the seconds equations then combining like ter

m?
Y=3x
2x+3y=55

A.5x=55
B.9×=55
C.11×=55
D.5y=55
Mathematics
1 answer:
MAXImum [283]3 years ago
3 0
Answer: C ppppppppppppl
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Galina-37 [17]

Step-by-step explanation:

oh, come on. you can just use common sense.

a local minimum is a point where the curve goes down to, and then turns around and starts to go up again. that point in the middle, where it turns around and does not go down any further, is the minimum.

for the maximum the same thing applies, just in the other direction (the curve goes up and turns around to go back down again).

a)

the local minimum values (y) are

-2, -1

b)

the values of x where it had these minimum values are

-1, +3

4 0
2 years ago
What is 30% of 250 = <br>Compute with percents
Crazy boy [7]
30% of 250 can be written as 0.3 * 250:

0.3(250) = 75

30% of 250 is 75.  Is this what you mean by "compute with percents?"
8 0
3 years ago
Read 2 more answers
Alemu, Tulu, Kassa and Tegitu worked for 4 hours, 6 hours, 5 hours
GaryK [48]
As a group they were paid $1000 after putting in 4+6+5+5 = 20 worker-hours.
$1000/(20 worker-hours) = $50/(worker-hour)
Alemu received 4*$50 = $200
Tulu received 6*$50 = $300
Kassa and Tegitu each received 5*$50 = $250
6 0
3 years ago
If three pears and four oranges cost $4.85 and three pears and ten oranges cost $8.75 what is the cost of a pear and an orange
marishachu [46]

Answer:

1 pear = $0.75; 1 orange = $0.65

Step-by-step explanation:

(1)               3P +  4O = 4.85

(2)              3P + 10O = 8.75                 Eqn (2) - Eqn (1)

3P + 10O – 3P – 4O = 8.75 – 4.85     Combine like terms

                           6O = 3.90                 Divide each side by 6

                             O = $0.65              Substitute into Eqn (1)

           3P + 4×0.65 = 4.85

               3P + 2.60 = 4.85                 Subtract 2.60 from each side

                           3P = 2.25                Divide each side by 3

                            P = $0.75

Oranges cost $0.65 each and pears are $0.75 each

4 0
3 years ago
Solve the inequality –24 ≤ x – 3 – 8x. A. x ≥ –3 B. x ≥ 3 C. x ≤ 3 D. x ≥ –9
lesya [120]
The answer is  C. x<span> ≤ </span>3
6 0
3 years ago
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