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3 years ago

The matrix method is being used to solve the system of equations x + 2y = 4 and 3x - y = 6.

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

8 0

Answer: b) multiply row 1 by -3 and add the result to row 2

Step-by-step explanation:

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1. Calculate the area of the<br> figure below. Round to the<br> hundredths place when<br> necessary.

a_sh-v [17]

Answer:

The area is 88.39 cm

Step-by-step explanation:

Here, we want to find the area of the semicircle given that the diameter of the semi circle is 15 cm

We start by getting the radius

Mathematically r = D/2

= 15/2 = 7.5

Area of semicircle is area of circle/2

= (pi * r^2)/2

= (22/7 * 7.5^2)/2 = 88.39 cm

5 0

3 years ago

A ball is kicked upward with an initial velocity of 56 feet per second. The ball's height h (in feet) can be expressed as a func

siniylev [52]

Answer:

1.75

Step-by-step explanation:

h(t) = -16t² + 56t

h'(t) = -32t + 56

To find time at max height equate h' to 0

0 = -32t + 56

t = 56/32 = 1.75 s

It takes 1.75 s to reach max highest point

8 0

3 years ago

what is the median of-16 -20 -23 10 -1 10 -1 0 0 -10 7 11 17 22 15 19 16 17 35 29 17 19 22 16 24 25 17 25

yawa3891 [41]

Answer:

Step-by-step explanation:

-23, -20, -16, -10, -1, -1, 0, 0, 7, 10, 10, 11, 15, 16, 16, 17, 17, 17, 17, 19, 19, 22, 22, 24, 25, 25, 29, 35

3 0

3 years ago

Find the midpoint of (1, 3) and (6, 5)

olasank [31]

Answer:

(3.5, 4)

Step-by-step explanation:

add and then divide (x1+x2 / 2, y1 + y2 / 2) so [(1+6)/2, (3+5)/2], so (3.5, 4)

5 0

3 years ago

Achemistry journal requires that all new research papers be peer reviewed by other scientists before they are published. This

gavmur [86]

Answer:

The reviewers can determine the experiment's feasibility.

Step-by-step explanation:

First of all this isn't math but the answer is between A & B, typically it is checked for mistakes that could lead to it being flawed. From this It is most likely A due to it being a paper and not an actual experiment, they would be looking for if it COULD happen, not if it WILL happen. They wouldn't add their own findings to someone elses paper, and it typically isn't for funding.

3 0

3 years ago