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Pie
3 years ago
14

Find the missing terms in the equation so that it is true. (3x + ?)^2=9x^2 + ?? +49y^2

Mathematics
1 answer:
valkas [14]3 years ago
8 0

Answer:

see explanation

Step-by-step explanation:

Note that 9x² and 49y² are perfect squares.

9x² = (3x)² → 3x is the first term

49y² = (7y)² → 7y is the second term

Hence

(3x + 7y)² = 9x² + 42xy + 49y²

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A multiple-choice question has 3 options. What is the percentage that you will choose the WRONG option?
sukhopar [10]

Answer:

66%

Step-by-step explanation: 2/3 is .66666666666666...

4 0
3 years ago
The area of a rectangle is greater than or equal to 154 square centimeters. The width of the rectangle is 12 centimeters and the
soldier1979 [14.2K]

Answer:

x ≤ 12.83

(Any number under or equal to 12.8333...)

Step-by-step explanation:

154 ≥ 12x

12.833.... ≥ x

x ≤ 12.83

5 0
2 years ago
We have 10 gallons of gas in the car. We use 1 5/8 gallons each hour. How many hours of gas do we have?
Sindrei [870]
You have a little over 6 hours of gas.
8 0
2 years ago
Lashonda is going to rent a truck for one day. There are two companies she can choose from, and they have the following prices.C
musickatia [10]
Answer:
30 < m
The solution would be (30, ∞)

Explanation:
For company A:
The charge is: $96 for any number of mileage ..............> I
For company B:
The charge is $75 fixed and 0.7 for each mileage m. This means that the charge is: 75 + 0.7m .................> II

We want the charge of company A to be less than the charge of company B. This means that we want I to be less than II.
Therefore,
96 < 75 + 0.7m
96 - 75 < 0.7m
21 < 0.7m
21/0.7 < m
30 < m

This means that for any mileage greater than 30, the charge of company A will be less than the charge of company B

Hope this helps :)

3 0
3 years ago
I need to know the circumference of circle C.
Anna71 [15]

Answer:

Step-by-step explanation:

\theta=30^\circ=\frac{30}{180} \pi =\frac{\pi }{6}\\l=r \theta\\JK=2 \times \frac{\pi }{6} =\frac{\pi }{3} \approx 1.047circumference=2\pi r=2 \times \pi  \times 2=4 \pi \approx 12.57 ~ft

6 0
3 years ago
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