MATHEMATICS MIDDLE SCHOOL

Amy bought 0.4 kg of tomatoes for $4.00.

What is the cost in dollars per kg of tomatoes?

Answers

Answer 1
Answer:

Answer:  The required cost in dollars per kg of tomatoes is $10 per kg.

Step-by-step explanation:  Given that Amy bought 0.4 kg of tomatoes for $4.00.

We are to find the cost in dollars per kg of tomatoes.

We will be using the UNITARY method to solve the given problem.

The cost of 0.4 kg of tomatoes = $4.00.

Therefore, the cost of 1 kg of tomatoes is given by

\$(4.00)/(0.4)=\$(40)/(4)=\$10.

Thus, the required cost in dollars per kg of tomatoes is $10 per kg.
Answer 2
Answer: if 0.4 kg cost 4. 0 dollar
than 1.kg will cost x dollar

x = (1 * 4)/0.4 = 10 dollars

1 kg tomatoes cost 10 dollars

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On her drivers test, Mrs. Lynch got 26 out of 30 questions correct. The passing grade was 0.85. Did Mrs Lynch pass?

Answers

26÷30 = .8666... so she did pass her driving test. 
26 divided by 30 equals .8666... She passed

Which coordnates represent a point on the graph of 3y = 5x - 13?A. (0,-13)
B. (3,1)
C. (7,7)
D. (-6,-1)

Answers

(x,y)
sub given points and see if true

A, (0,-13)
x=0
y=-13
3(-13)=5(0)-13
-39=0-13
-39=-13
false (other user was just guessing)

B. (3,1)
x=3,
y=1
3(1)=5(3)-13
3=15-13
3=2
false

C. (7,7)
x=7
y=7
3(7)=5(7)-13
21=35-13
21=22
false

D. (-6,-1)
3(-1)=5(-6)-13
-3=-30-13
-3=-43
false

answer is none of them

PLEASE ANSWER ASAP!!! I'M GIVING A LOT OF POINTS FOR DA CORRECT ANSWER!!!Solve.
-20 = 5
___ x
6

x = ? (You have to put what "x" equals)

Answers

-20=5/6x
5/6x=-20
5x=20 multiplied by 6
5x=120
x=120 divided by 5
x=24

This is how you solve your equation;

-20 = 5/6x

-20 ÷ (-5/6) = x  (did the inverse operation of x)

-24 = x    or    x = -24

to check the answer just substitute the value of x in the equation;

-20 = 5/6x

-20 = 5/6(-24)

-20 = -20

hope that helps:D

I'm not sure how to do the math for this

Answers

Answer:

156

Step-by-step explanation:

3 ml of compound A used for every 4 ml of compound B in total it's 7 ml

To calculate how many ml of A used in a 364 ml drug we can divide 364 by 7

364 ÷ 7 = 52 which means there are 52, 7 ml in the 364

since 7 ml drug contains 3 ml conpound A there is

52 × 3 = 156 of compound A in the 364 ml drug
3/7 x 364 =156ml of compund A

A floor of a room is in the shape of square. It is to be covered with rectangular tiles that each have an area of 192 square inches.If the length of the floor is 14 feet, how many tiles are needed to cover the floor?

Answers

If the length of the floor is 14 feet, convert it into inches to match the units of the tile. 14 feet is 168. So the floor is 168 inches long. Because we know it's a square and all sides are the same length, find the area of the floor by doing 168x168. This equals 28224 square inches. Then, divide by the area of one tile. 28224/192=147. So you need 147 Tiles.

How do you subtract 9 2/6 - 6 5/6 =

Answers

9 2/6 = ((9*6)+2) / 6 = (54+2) / 6 = 56 / 6
6 5/6 = ((6*6) + 5) / 6  = (36+5) / 6 = 41 / 6

9 2/6 - 6 5/6 = 56 / 6 - 41 / 6 = 15 / 6 = 2 3/6 = 2 1/2

Answer:

2 1/2

Step-by-step explanation:

9 2/6= 56/6

6 5/6= 41/6

56-41=15

15/6= 2 3/6

2 3/6 = 2 1/2
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