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3 years ago

Determine if the point (12, 20) is on the graph of y = 2x – 5. Justify your answer.

Mathematics

2 answers:

Anna [14]3 years ago

7 0

Answer:

456[67]98

Step-by-step explanation:

zzz [600]3 years ago

6 0

Answer:

Step-by-step explanation:

for the point (12,20) to be on the graph the equation of the line has to be true.

y=2x-5 so is it true that

20= 2*12-5

20=19 false

so the point is not on the graph

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A group of workers can plant 54 acres in 9 days. What is their rate in acres per day?

telo118 [61]

Answer:

6 acres per day

Step-by-step explanation:

Take the total acres planted (54) and divide the number of days (9) to get the acres per day (6)

3 0

2 years ago

Oliver and Lenny started hiking a hill simultaneously from the bottom to the top. Oliver hiked at a speed of 5 km/h during the f

Vilka [71]

Answer:

Oliver and Lenny reached the top of the hill at the same time

The proportion of time Oliver spent hiking to that of Lenny is 1:1

Step-by-step explanation:

1. Let's review the information given to us to answer the question correctly:

Oliver's speed = 5 km/h during the first half, then decreased his speed to 4 km/h during the second half.

Lenny's speed = 4 km/h during the first half, then increased his speed to 5 km/h in the second half.

2. Who reached the top of the hill first? What is the proportion of time he spent hiking to that of his friend?

Let's assume the distance from the bottom to the top of the hill is 10 kilometers for calculating the time it will take Oliver and Lenny to reach the top of the hill:

Speed = Distance/Time

Time = Distance/Speed

Oliver = Time of hiking first 5 km + Time of hiking second 5 km

Lenny = Time of hiking first 5 km + Time of hiking second 5 km

Oliver = 5/5 + 5/4

Oliver = 1 + 5/4 = 2 1/4 hours

Lenny = 5/4 + 5/5

Lenny = 5/4 + 1 = 2 1/4 hours

Oliver and Lenny reached the top of the hill at the same time

The proportion of time Oliver spent hiking to that of Lenny is 1:1

4 0

4 years ago

If y=-3x + 2, find x when y= -13 *

Arturiano [62]

Answer:

x = 5

Step-by-step explanation:

You know what "y" equals, so you just need to insert the value into the equation, then solve for "x".

-13 = -3x + 2

-13 - 2 = -3x

-15 = -3x

5 = x

x = 5

7 0

3 years ago

If the 6th term of an A.P. is 46, find the sum of first 11 terms.

zaharov [31]

Answer:

506

Step-by-step explanation:

:. t6 = 46 ... [ Given ]

tn = a+(n-1) d ... [ Formula ]

:. t6 = a+(6-1) d

:. 46 = a+5d ... [1]

Sn = n/2 [2a+(n-1)d] ... [ Formula ]

:. S11 = 11/2 [2a+(11-1) d]

:. S11 = 11/2 [2a+10d]

:. S11 = 11/2x2 [a+5d]

:. S11 = 11[46] ... [ From (1)]

:. S11 = 506

5 0

3 years ago

one cabinet measures 3 feet by 2.5 feet by 5 feet. a second measures 4 feet by 3.5 feet by 4.5 which volume is greater explain

prisoha [69]

First you multiply 3 by 2.5 by 5 which should give you 37.5. For the other one you do the same but you multiply 4 by 3.5 by 4.5, it would be 63.So the second one has more volume

3 0

3 years ago