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zhenek [66]
2 years ago
11

Find a ⋅ b. a = 9i + 5j, b = 4i + 3j

Mathematics
1 answer:
IgorLugansk [536]2 years ago
6 0
-36 + 47ji + 15j^2


Best luck with your studying
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The approximate height, h, in meters, traveled by golf balls hit with two different clubs over a horizontal distance of d meters
inna [77]

Answer:

a) 100 metres

b) 10 metres

Step-by-step explanation:

Given: the approximate height, h, in meters, travelled by golf balls hit with two different clubs over a horizontal distance of d meters is given by the functions: h=-0.002d^2+0.3d\,,\,h=-0.004d^2+0.5d

To find: distances when the ball is at the same height when either of the clubs  are used. Also, to find this height

Solution:

(a)

-0.002d^2+0.3d=-0.004d^2+0.5d\\d(-0.002d+0.3)=d(-0.004d+0.5)\\-0.002d+0.004d=0.5-0.3\\0.002d=0.2\\d=\frac{0.2}{0.002}=100\,\,metres

(b)

Put d = 100 in h=-0.002d^2+0.3d

h=-0.002(100)^2+0.3(100)\\=-20+30\\=10\,\,metres

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3 years ago
The model represents the equation 3x – 2 < 4. What is the solution for this inequality?
Vladimir [108]
Answer:

D

X < 2

Explanation:
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2 years ago
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Round 00.963.785 to the nearest. hundredth​
vladimir1956 [14]
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If i saved $500 a month how many months until i’m a millionare?
OleMash [197]

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Step-by-step explanation:

1,000,000 / 500

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3 years ago
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<h3><em>My friends the answer is 3.</em></h3>

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