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3 years ago

Simplify:

Mathematics

2 answers:

mestny [16]3 years ago

7 0

Answer:

15x²y

Step-by-step explanation:

4x²y and 11x²y are similar terms. Therefore, both terms can add normally

OLEGan [10]3 years ago

6 0

15x4y2 letter B is your answer

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Value for -3 + 4x > 4

lilavasa [31]

Answer:

x > 1/4

Step-by-step explanation:

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3 years ago

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3 years ago

Kathy's lunch cost $16 which included tax. Kathy tipped 20% and reached for a $20 bill. Did she have enough money? Please show y

e-lub [12.9K]

Yes she does have enough here's my work

16 times .20 equals 3.2 and the add 3.2 to 16 and get $19.20

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3 years ago

What is the standard form of the equation given the slope of: - 3/5 and y-intercept 5

AlladinOne [14]

Answer:

y= -3/5x+5

Step-by-step explanation:

3 0

3 years ago

Two boats leave the same place at the same time. The first boat heads due north at 10 kilometers per hour. The second boat heads

Maksim231197 [3]

Answer:

18.87 km/hr

Step-by-step explanation:

First boat is heading North with a speed of 10 km/hr.

Second boat is heading West with a speed of 16 km/hr.

Time for which they move = 2.5 hours

To find:

The speed at which the distance is increasing between the two boats.

Solution:

Let the situation be represented by the attached diagram.

Their initial position is represented by point O from where they move towards point A and point B respectively.

$Distance = Speed \times Time$

$Distance\ OA = 10 \times 2.5 = 25\ km$

$Distance\ OB = 16 \times 2.5 = 40\ km$

We can use Pythagorean Theorem to find the distance AB.

AB is the hypotenuse of the right angled $\triangle AOB$ .

According to Pythagorean theorem:

$\text{Hypotenuse}^{2} = \text{Base}^{2} + \text{Perpendicular}^{2}\\\Rightarrow AB^{2} = OA^{2} + OB^{2}\\\Rightarrow AB^2 = 25^2 + 40^2\\\Rightarrow AB^2 = 2225^2\\\Rightarrow AB^2 \approx 47.17\ km$

The speed at which distance is increasing between the two boats is given as:

$\dfrac{47.17}{2.5} \approx 18.87\ km/hr$

4 0

3 years ago