PLEASE ANSWER ASAP AND EXPLAIN!!!!!!!!!!!At an aquarium, researchers are preparing a mixture of salt water. The desired ratio is 90 grams of salt per liter of water.•
1 ounce = 28.35 grams• 1 gallon = 3.8 liters

What is the ratio in ounces per gallon?
A. 0.8 ounce per gallon
B. 3.2 ounces per gallon
C. 12.1 ounces per gallon
D. 23.7 ounces per gallon

Answers

Answer 1

Answer:

Answer: use mathpapa

Step-by-step explanation:

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Answers

4 years

Hope this helps :)

if a plane can travel 490 miles per hour with the wind and 450 miles per hour against the wind, find the speed of the plane without a wind and the speed of the wind.

Answers

s=plane's speed
w=windspeed

travels490 mh with wind
450 agains wind

s+w=490mph
s-w=450
add them toegether

s+w=490
s-w=450 +
2s+0w=940

2s=940
divide by 2
s=470
find wind speed
s+w=490
470+w=490
w=20

windspeed=20mph
planespeed=470mph

The accurate answer will be 470mi/hour

Jason can mow his parents' yard in 3 hr. His brother can mow itin 4 hr. How long would it take them, working together, to mow
the yard? (Assume two mowers are available.)

Answers

I would assume it would take 3.5 hours to mow the lawn together.

Which fraction is equal to 0.8? Express your answer in simplest form. A. 3/5 B. 4/5 C. 1/8 D. 5/8

Answers

$0.8 = 0.8 * (10)/(10) = (8)/(10) =(4* 2)/(5* 2) = \boxed{\bf{(4)/(5)}}$

Answer is B

If you answer ALL questions listed, you get a good amount of points (3 questions, 5 points each, 15 points total) :D

1) Which pair are solutions to the equation?

4xy + 8 = 36

A.
(7, 1) and (3, 2)

B.
(1, 7) and (7, 1)

C.
(1, 7) and (4, 9)

D.
(4, 9) and (3, 2)

2)
Which of the ordered pairs in the form (x, y) is a solution of this equation?

5x - y over 3 = 13,
(2, -9) (3, -6)

A.
The first is not a solution, but the second is.

B.

Both are solutions.

C.

The first is a solution, but the second is not.

D.

Neither is a solution.

3)
Which ordered pairs in the form (x, y) are solutions to the equation

7x – 5y = 28?

Choose all answers that are correct.

A.

(−6, −14)

B.

(−1, −7)

C.

(4, 10)

D.

(7, 9

Answers

1)

$4xy+8=36\n4xy=28\nxy=7$

We know that each coordinate (x,y) must therefore multiply to equal 7. The only numbers that multiply to 7 are 7 and 1, so B) is the correct answer.

2)

For this one, just plug in the coordinates they give you for x and y and see if either one works:

$5x-(y)/(3)=13\ \ \ \ \ \ \ (2,-9)\n5(2)-((-9))/(3)=13\n10-(-3)=13\n13=13$

So the first one is a solution. Now plug in the second one:

$5x-(y)/(3)=13\ \ \ \ \ \ (3,-6)\n5(3)-((-6))/(3)=13\n15-(-2)=13\n17=13$

Therefore, the first is a solution and the second isn't making C) the correct answer.

3)

For this one, just plug in the ordered pairs they give you and see which ones end up working:

$7x-5y=28\n\nA. (-6,-14)\n7(-6)-5(-14)=28\n-42+70=28\n28=28\n\nB.(-1,-7)\n7(-1)-5(-7)=28\n-7+35=28\n28=28\n\nC.(4,10)\n7(4)-5(10)=28\n28-50=28\n-22=28\n\nD.(7,9)\n7(7)-5(9)=28\n49-45=28\n4=28$

A) and B) are the only ones that work out, so those are the correct answers.

1. 4xy+8=36

4xy=28

xy=7

2. 5(2)-(-9)/3=13

10-(-3)=13

13=13

5(3)-(-6)/3=13

15-(-2)=13

17≠13

3. 7(-6)-5(-14)=28

-42+70=28

28=28

7(-1)-5(-7)=28

-7+35=28

28=28

7(4)-5(19)=28

28-50=28

-22≠28

7(7)-5(9)=28

49-45=28

4≠28

Hope this helps... :)

How many blocks with dimensions of 1/3 x 1 x 1 can fit in a unit cube? A. 2 B. 3 C. 6 D. 9

Answers

a block of (1/3) x 1 x 1, has a volume of, just that product, namely 1/3.

a Unit Cube, has all sides of 1 unit, thus called the Unit cube, and has a volume of 1*1*1 = 1³ = 1.

so, how many times does the volume of 1/3 go into 1?

recall there are three thirds in a whole, so 1/3 + 1/3 + 1/3 = 1, 3 times.

Answer:b

Step-by-step explanation:

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28 POINTS PLEASE HELPP