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Advocard [28]
3 years ago
7

System: -5x + 3y = 6 Y=7x - 14 (Solve with substitution) Find the x,y

Mathematics
1 answer:
Aleks04 [339]3 years ago
4 0

Answer:

x=3

y=7

Step-by-step explanation:

solve for the first variable in one of the equations, then substitute the result into the other equation.

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4. A<br> is an algebraic expression made by<br> adding or subtracting terms.
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Answer:

You have one algebraic expression. It can be simplified by adding and subtracting like terms within it.

You have two algebraic expressions and are asked to add or subtract them. After adding or subtracting, you’ll end with one final algebraic expression.

4 0
3 years ago
Which are the solutions of the quadratic equation x^2=9x+6
zzz [600]
You can use the quadratic equation to solve this once you have this set equal to zero. The answers would be roughly 9.6 and -0.6. 
8 0
3 years ago
PLEASE HELP ME WITH Q 1. a) b)
diamong [38]
A calculate the bounce height for each and work out the total

b do it again and use a stopwatch and calulate. Hope this helped
6 0
3 years ago
She is serving hot coffee and cold coffee in two rectangular-shaped tanks, each with dimensions width 8.75 inches, length 8.75 i
Blababa [14]

The volume of the coffee in each tank will be 1760. in³. The mass of cold coffee and hot coffee will be 6163.29 oz and 10213.45 oz. Then the number of the tank placed on a table is one only.

<h3>How to find the density and volume?</h3>

She is serving hot coffee and cold coffee in two rectangular-shaped tanks, each with dimensions width of 8.75 inches, a length of 8.75 inches, and a height of 23 inches.

The hot coffee has a density of 5.8 oz/in³ and the cold coffee has a density of 3.5 oz/ in³.

Then the volume of the coffee in each tank will be

We know that the dimension of both tanks is equal. Then the volume will remains equal.

Volume = L × B × H

Volume = 8.75 × 8.75 × 23

Volume = 1760.9375 ≅ 1760.94 in³

Then  the mass of the coffee in each the tank will be

The mass of hot coffee will be

Mass = Density × Volume

Mass = 5.8 × 1760.94

Mass = 10213.45 oz

The mass of cold coffee will be

Mass = Density × Volume

Mass = 3.5 × 1760.94

Mass = 6163.29 oz

Then the number of the tank placed on a table is one only.

More about the density and volume link is given below.

brainly.com/question/952755

#SPJ1

3 0
2 years ago
peter uses unit cubes to build a figure in the shape of the letter x. what is the fewest unit cubes that peter can use to the fi
noname [10]
Five cubes.
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3 0
3 years ago
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