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solniwko [45]
4 years ago
15

PLEASE HELP!!!! (x + y + 3)(x + y - 4)

Mathematics
1 answer:
sdas [7]4 years ago
7 0

Combine like terms

x^2 + 2xy + y^2 - x - y -12

:)))

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Find the area of the rectangle. Round to the nearest whole number.
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a

Step-by-step explanation:

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Jotham needs 70 liters of a 50% alcohol solution. He has a 30% solution and an 80% solution available. How many liters of
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x+y=70. (30x+80y)/(100x+100y)=50/100

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Choose the slope-intercept form of 3x + 2y = 5.
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Answer:

y=\frac{-3}{2}x +\frac{5}{2} \\or \\y=\frac{5}{2} -\frac{3}{2} x

Step-by-step explanation:

slope-intercept form is: y= mx+b

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A dog jumps straight up in the air to catch a ball and lands on the ground 1.3 s later. Let h(t) represent the dog’s height, in
slamgirl [31]

The given question have mistake. The correct question is written below.

Question:

A dog jumps straight up in the air to catch a ball and lands on the ground 6.37 s later. Let h(t) represent the dog’s height, in meters, t seconds after he leaves the ground. Which equation models the dog’s height for a given time t?

Answer:

Option B:

h(t)=-4.9 t^{2}+6.37t

Solution:

<u>General formula for the height of the projectile over time:</u>

(1) h(t)=-16 t^{2}+v t+s

Where h = height in feet, t = time, v = initial velocity and s = initial height (feet)

(2) h(t)=-4.9 t^{2}+v t+s

Where h = height in meters, t = time, v = initial velocity and s = initial height(meter)

Given initial velocity = 6.37 s and initial height is 0.

The height of the dog is in meters.

So, use second formula and substitute v = 6.37 and s = 0.

h(t)=-4.9 t^{2}+v t+s

h(t)=-4.9 t^{2}+6.37t+0

h(t)=-4.9 t^{2}+6.37t

Hence option B is the correct answer.

6 0
3 years ago
Area of the base of cuboid shaped tank is 8400 cm. When 420 liters of water is put into the tank. find the height of the water i
Oksi-84 [34.3K]

Answer:

hope this helps you get a good grades

4 0
3 years ago
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