MATHEMATICS MIDDLE SCHOOL

And aquarium tank holds 95 L of water how much is this an gallons use the following conversion 1 gallon is 3.8 L

Answers

Answer 1

Answer:

Answer:

Step-by-step explanation:

$\text{95 Liters} * (1 gallon)/(3.8 Liters) = \text{25 gallons}$

This is called dimensional analysis. The set of brackets on the left should have a unit cancel with the current unit.

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There are 13 chickens and pigs in the barn. There are 40 legsin all (each chicken has two legs and each pig has four legs).
Use substitution to solve the linear system of equations and
determine how many chickens, x, and pigs, y there are.
Express the solution as an ordered pair (x,y).

Answers

Answer:

(6, 7)

Step-by-step explanation:

x+y= 13

2x+4y= 40 ⇒ x+2y = 20 ⇒ 13-y +2y= 20 ⇒ y= 20-13= 7

x= 13-y= 13-7= 6

chickens= 6

pigs= 7

Final answer:

To solve the problem, set up a system of equations using the given information. Solve one equation for a variable and substitute it into the other equation to find the values of the variables. Determine the number of chickens and pigs in the barn. The solution is (6, 7).

Explanation:

To solve this problem, we can set up a system of equations based on the given information. Let x represent the number of chickens and y represent the number of pigs. From the information given, we can write two equations: x + y = 13 (equation 1) and 2x + 4y = 40 (equation 2).
Using substitution, we can solve equation 1 for x and substitute it into equation 2:

Equation 1:

x + y = 13

x = 13 - y

Equation 2:

2(13 - y) + 4y = 40

26 - 2y + 4y = 40

2y = 14

y = 7

Now, substitute the value of y back into equation 1 to find x:

x + 7 = 13

x = 6

Therefore, there are 6 chickens and 7 pigs in the barn, which can be expressed as the ordered pair (6, 7).

Learn more about Solving a system of equations here:

brainly.com/question/32115090

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A jar contains 6 red, 8 blue, one white, 7 black, and twoyellow marbles
Use this information to determine the probability of
selecting
1) a white marble
2) a red marble
3) a yellow marble
4) a purple marble
5) a black marble

Answers

Answer:

1) 1/23 2) 6/23 3) 2/23 4) 0/23 5) 7/23

Step-by-step explanation:

There are 23 marbles in total.

1) 1/23 There is 1 white marble.

2) 6/23 There are 6 red marbles.

3) 2/23 There are 2 yellow marbles.

4) 0/23 There are 0 purple marbles.

5) 7/23 There are 7 black marbles.

What can you say about the marked angles in these parallelogram?A Opposite angles of a parallelogram are congruent. ( the same measure)
B Consecutive angles of a parallelogram are supplementary (measure add to 180)
C consecutive angles of a parallelogram are congruent. (The same measure)
D Opposite angles of a parallelogram are supplementary (measure add to 180)

Please need help on this don’t understand this one

Answers

Answer: A and B both are correct statements.

Step-by-step explanation:

Let ABCD is a parallelogram then its properties are as follows:-

1. Opposite angles and sides of parallelogram are always congruent.

i.e.AB=CD and AD=BC and ∠A=∠C and ∠B=∠D

2.Consecutive angles are supplementary.

i.e. ∠A+∠B=180° and ∠B+∠C=180°

3. Its diagonals bisect each other.

4. The sum of all the angles is 360°.

Miss Smith needed 2 1/5 pounds of corn Mesa in order to make tamales. when she went to the grocery store she found a package of 1 3/8 pounds. what fraction of a pound does she still need?