Write an expression that can be used to check the quotient of 646 divided 3

Answers

Answer 1

Answer: An expression used to check the quotient would be this:
3x=646
Then, do as you normally would and divide 646 by 3:
646/3 = x
x≈215.33

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7. A cargo train covers 375 km in 15 hours. Find: b) time taken to travel 770 km.
Factor the perfect square trinomial 4x^2– 20x + 25.
The side length of an equilateral triangle is 6 cm. What is the height of the triangle?
Hakim recorded his finishing time, in seconds, for each time he ran the 100 m race during one track season.What was the median of his finishing times? 12.0, 12.4, 11.9, 12.1, 12.2, 12.4, 12.1, 12.3, 11.9

3x+2y=4
4x+5y=17
What is the value of x and y?

Answers

{3x+2y=4 /*5
{4x+5y=17 /*(-2)

{15x+10y=20
{-8x-10y=-34 (+)
7x=-14
x=-2

15x+10y=20
15*(-2)+10y=20
-30+10y=20
10y=50
y=5

$3x+2y=4|\cdot(-4)\n4x+5y=17|\cdot 3\n\n-12x-8y=-16\n\underline{12x+15y=51}\n7y=35\ny=5\n\n3x+2\cdot5=4\n3x+10=4\n3x=-6\nx=-2\n\n\boxed{(x,y)=(-2,5)}$

Find the least number which when increased by 15 is exactly divisible by 15, 35and 48.

Answers

lmc(15,35,48) is

15,35,48 | 2
15,35,24 | 2
15,35,12 | 2
15,35, 6 | 2
15,35, 3 | 3
5,35, 1 | 5
1, 7, 1 | 7
1, 7, 1 lcm(15,35,48) = 1680

So found number is 1680 - 15 = 1665

wyatt can husk at least 12 dozen ears of corn per hour and at most 18 dozen ears of corn per hour. Based on this information. what is a possible amount of time, in hours, that it could take wyatt to husk 72 dozen ears of corn?

Answers

If Wyatt can husk at least 12 an hour, then to work out how much 72 takes, we do 72 ÷ 12 to find out the time. The answer is 6.

If Wyatt can husk 18 at most, then we do 72 ÷ 18 = 4 hours.

Wyatt can husk 72 dozen ears in anywhere between 4 and 6 hours, but if you were to average it, you would get 5 hours. ((4 + 6) ÷ 2 = 5).

so a possible amount of time
find the range of highest and lowest
equation is
(number of corns per hour) times (number of hours)=72
so
12 times x=72 would be longest and
18 times y=72 would be shortest

solve
12 times x=72
divid 12
x=6
6 hours at most

18 times x=72
divide 18
x=4

at most 6 hours an at least 4 hours so
6>hours>4
any number of hours from 4 to 6 including 4 and 6

Solve for t. 50= − 10 t + 80

Answers

The answer is t= 3 !!!

50= - 10t+80
We move all terms to the left:
50 - ( -10t+80) =0
Get rid of the parentheses
10t - 80+50=0
We add all the numbers together, and all the variables
10+ - 30=0
We move all the terms containing t to the left, all the other terms to the right
10t = 30
t = 30/10
t = 3

Geoff planted dahlias in his garden. Dahlias have bulbs that divide and reproduce underground. In the first year, Geoff’s garden produced 8 bulbs. In the second year, it produced 16 bulbs, and in the third year it produced 32 bulbs. If this pattern continues, how many bulbs should Geoff expect in the sixth year?A. 64
B. 512
C. 128
D. 256

Answers

1st = 8, 2nd = 16, 3rd = 32, doubling each time so 4th = 64, 5th = 128,

6th = 256

While traveling to Europe, Phelan exchanged 250 US dollars for euros. He spent 150 euros on his trip. After returning to the United States he converts his money back to US dollars. How much of the original 250 US dollars does Phelan now have? Round to the nearest cent. 1 European euro = 1.3687 US dollars

Answers

Answer:$ 44.70

Step-by-step explanation: 250/1.3687 = 182.655-150 =32.655 times 1.3687

Answer:

He has 45 USD left.

Step-by-step explanation:

250 USD = 212 Euros. 250 - 212 = 38. 38 euros - about 45 USD, rounded.

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An albatross is a large bird that can fly 600 kilometers in 15 hours at a constant speed. Using LaTeX: dd for distance in kilometers and LaTeX: tt for number of hours, an equation that represents this situation is LaTeX: d=40td = 40 t . What are two constants of proportionality for the relationship between distance in kilometers and number of hours?

Is #1 correct and I need help on #2 THANKS :)