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Scorpion4ik [409]
3 years ago
15

Select the correct answer from each drop-down menu.

Mathematics
1 answer:
DanielleElmas [232]3 years ago
3 0

Answer:

Expressions for y:

1. A - 3B

3. A/3 - B

3. (27/13, -60/13)

Step-by-step explanation:

Expressions for y:

A - 3B

A/3 - B

Find combinations to eliminate x

A) 8x + y = 12

B) 2x - 3y = 18

Expressions for y:

A - 3B

A/3 - B

y = 12 - 8x

2x - 3(12 - 8x) = 18

2x + 24x - 36 = 18

26x = 54

x = 54/26 = 27/13

y = 12 - 8(27/13) = -60/13

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A student needs 3/4 pounds of modeling clay for a project. If each package has 1/8 pounds of clay how many packages of clay does
Maurinko [17]

Answer:

6 packages

Step-by-step explanation:

Since the student needs a total of 3/4 pounds of modeling clay we need to calculate how much is 3/4 of 8 since that is the denominator being used to calculate each individual package of clay. Since 3/4 is equal to 0.75 we can simply multiply this by 8 to calculate the total amount of clay needed.

8 * 0.75 = 6

This means that the student will need 6/8 pounds of clay. Since each package brings 1/8 pounds this means that we would need a total of 6 packages in order to have enough clay.

4 0
3 years ago
To find 8 ×17, I double and halve
anastassius [24]

Answer:

what is the question?

Step-by-step explanation:

6 0
3 years ago
Pls help asap for 13 pls and thank u
AysviL [449]
Answer:
The answer is 35.5 square units


Step-by-step explanation:

The shape represents a rectangle, a small triangle removed from it at the upper right corner and a bigger triangle is attached to it at the upper left corner.

We get this formula:
A(shape) = A(rectangle) - A(small triangle) + A(big triangle)
SO LET'S FIND EACH!

A(rectangle)= length x width
length= 8 units
width= 4 units
We get:
A(rectangle) =8x4= 32 square unit

A(small triangle)= (base x height)/2
base= 1 unit
height= 1 unit
We get:
A(small triangle) = (1x1)/2 = 1/2 = 0.5 square units

A(big triangle)= (base x height)/2
base= 2 units
height= 4units
We get:
A(big triangle)= (2x4)/2 = 8/2 = 4 square units

For the final result:
A(shape) = 32 - 0.5 + 4 = 35.5 square units


8 0
2 years ago
A four side sandbox has exactly two right angles, two side leghts 5 ft, and two side leghts 6 ft. What geometric shape best desc
serious [3.7K]

Answer:

Square

Step-by-step explanation:

If its 4 sided and two measures are 90 degrees then that means the other two must be 90 degrees. That means its a square or a rectangle. Now since the 4 sides arent all the same and two sides being 6 and two sides being 5, you can rule out it being a square.

5 0
3 years ago
Solve each system of equations by using substitution.<br> x+4y=3<br> 2x-3y=17
olganol [36]
X + 4y = 3 x = -4y + 3
2x - 3y = 17

2(-4y + 3) - 3y = 17
-8y + 6 - 3y = 17
-11y + 6 = 17
-11y = 11
y = -1

x = -4(-1) + 3
x = 4 + 3
x = 7

(7, -1) is your answer
4 0
3 years ago
Read 2 more answers
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