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Arturiano [62]
3 years ago
8

Andres dog weighs 18 pounds. The vet says the breed of his dog typically weighs about 8 kg. How many kg is andres dog above the

typical weight? (One kg is about 2.2 lbs.)
Mathematics
1 answer:
Liono4ka [1.6K]3 years ago
7 0
18-8=10

10*2.2=22

his dog is 22 lbs above the typical weight   
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PLEASE HELP!!!! I’m about to rip my hair out over this.
Nina [5.8K]

Step-by-step explanation:

1. The equation graph is a parabola, so the maximum height will be the vertex of the parabola. You can find the vertex coordinate t using the formula:

t = -b/2a

t = -18/2•(-4.9)

t = -18/-9.8

t = 1.84 seconds

2. The height of the ground is 0, so the balls hit the ground when the equation result is 0:

0 = -4.9t²+18t+10

Now you solve it using Bhaskara:

Δ = b² -4ac

Δ = 18² -4•(-4.9)•10

Δ = 520

t = (-b ±√Δ)/2a

t = (-18 ± √520)/2•(-4.9)

t1 = (-18 - 20.8)/-9.8

t1 = 3.96 seconds

t2 = (-18 +20.8)/-9.8

t2 = -0.28

Doesn't exist negative time, so we pick the first value found, t = 3.96 seconds

3. Now you just need to put 3 in place of t to find the result:

h = -4.9•3² +18•3 +10

h = -4.9•9 + 54 + 10

h = -44.1 + 64

h = 19.9 meters

4. You just need to put 1 in place of t to find the height:

h = -4.9•1²+12

h = -4.9+12

h = 7.1 meters

5 0
3 years ago
Solve x - 6 = -12 A) -18 B) -6 C) 2 D) 6
asambeis [7]
The answer would be -6 or letter B because
x - 6 =   - 12 \\ x - 6 + 6 =  - 12 + 6 \\ x =  - 6
8 0
3 years ago
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5 0
3 years ago
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Ira Lisetskai [31]

Answer:

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x-2=4x-5

x-2+5=4x-5+5

x-x+3=4x-x

3=3x

\frac{3}{3} =\frac{3x}{3}

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Step-by-step explanation:

your answer is B

7 0
3 years ago
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How many meters are there in 89 inches
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