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Irina-Kira [14]
3 years ago
8

Finish solving the system of equations -9.5x -2.5y = -4.3 and 7x + 2.5y = 0.8 using the linear combination method.

Mathematics
1 answer:
muminat3 years ago
4 0

Answer:

y= -3.6

Step-by-step explanation:

-9.5(1.4)-2.5y=-4.3

-13.3-2.5y=-4.3

-9=2.5y

y=-3.6

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Jim takes great pride in decorating his float for the homecoming parade for his high school. With the $5000 he has to spend, Jim
Westkost [7]

Answer:

r = (5000 - [(5000 x 0.3) + (4000 x 0.6) + (300 x 0.25)])0.8

Simplified - r = 820

Step-by-step explanation:

I don't know how to explain it exactly, but I know you have to find out how much the carnations, tulips, and irises all cost,subtract that from how much money he has, and divide what left by the cost of the roses (by multiplying the 0.8 cents, because it's a decimal).

r = (5000 - [(5000 x 0.3) + (4000 x 0.6) + (300 x 0.25)])0.8

r = (5000 - [1500 + 2400 + 75])0.8

r = (5000 - 3975)0.8

r = 1025(0.8)

r = 820

6 0
4 years ago
A flare is launched upwards from a platform that is 20 feet in the air with an initial velocity of 128 feet per second. What is
Nastasia [14]

Answer:

Hmax = 269.76 feet

Step-by-step explanation:

This movement is vertical shot up.

We will accept value of g= 10m/s², but we must convert meters in the feets.

We know that 1 meter = 3.28 feets =>  10meters = 32.8 feets

According to this g= 32.8 feet/s²

A flare is launched upwards from the height platform H₁ = 20 feet.

Initial velocity is 128 feet per second, when the flare reaches the highest point the final velocity is zero.

We will marked velocity with V and use this formula  

V₀² - V² = 2 · g · H₂ and V= 0 => V₀² = 2 · g · H₂ => H₂ = V₀²/ 2 · g

H₂ = 128² / 2 · 32.8 = 16384 / 65.6 = 249.76 feet

The highest point in feet , that the flare reaches is:

Hmax = H₁ + H₂ = 20 + 249.6 = 269.6 feet.

God with you!!!


3 0
3 years ago
45 45 90can someone help me solve this
Veronika [31]

Answer:

8√2 or 8sqrt2

Step-by-step explanation:

8 0
3 years ago
Why is it important to be able to write a fraction in simplest form?
pickupchik [31]
Oftentimes, it makes the problem much easier to solve and change into other things like ratios, percentages, and decimals.
7 0
3 years ago
Read 2 more answers
After kicking, one coach likes to play practice games with 6 players on each
Nezavi [6.7K]

There are many possible numbers. First, lets begin with the data there giving us. They are saying she wants to play a practice game so there at least needs to be 2 teams. It also says, that she wants 6 players on each team, nothing more and nothing less. So, for this we are going to use the 6 timetables.

6 x 2 = 12

6 x 3 = 18

6 x 4 = 24

6 x 5 = 30

6 x 6 = 36

There are also more numbers, but I am not doing those. But, for your first five, there can be 12, 18, 24, 30, and 36 students to be on the teams for the practice game.

4 0
3 years ago
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