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Semenov [28]
3 years ago
7

Which equation can be used to solve the matrix equation [1/2 -1/4 2 3/4] [x y] = [2 -4 1 6]​

Mathematics
2 answers:
Musya8 [376]3 years ago
7 0

Answer:

Use a matrix equation to solve the system of linear equations: -2x + 4y= 2, -3x+7y=7 *

Arisa [49]3 years ago
6 0

Answer:

<h2>D.(x y) = (-6,2,-16,4) (2,-4,1,6)</h2>

Step-by-step explanation:

<u>took the pretest</u>

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Solve for Х.<br> 16<br> 20<br> A 25.6<br> В<br> 6<br> С<br> 12<br> D 15
777dan777 [17]

Answer:

12 which is on C

Step-by-step explanation:

use pathogoras theorem

a^2+b^2=c^2

16^2+b^2=20^2

256+b^2=400

b^2=400-256

b^2=144

b= square root of 144

b= 12

7 0
3 years ago
Please help ASAP!!!! ​
katrin [286]

The answer is B i had this problem.

6 0
3 years ago
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In a survey of 364 children aged 19-36 months, it was found that 91 liked to eat potato chips. If a child is selected at random,
n200080 [17]

Answer: 0.75

Step-by-step explanation:

A survey of 364 children aged 19-36 months found that 91 liked to eat potato chips.

Total children surveyed= 364

Those that like to eat potato chips= 91

Those that don't like to eat potato chips= 364 - 91 = 273

Probability that the child chosen doesn't like to eat potato chips will be children that don't like to eat potato chips divided by total number of children surveyed.

= 273/364

= 0.75

4 0
3 years ago
The diameter of a sphere is 4 centimeters.
ELEN [110]
The volume of a sphere refers to the number of cubic units that will exactly fill a sphere. The volume of a sphere can be found or calculate by using the formula V=4/3πr^3, where r represents the radius of the figure.

In this exercise is given that a sphere has a radius of 4 centimeters and it is asked to find its volume and use 3.14 as the value of π or pi. The first step would be substitute the values into the previous mention formula.

V=4/3πr^3
V=4/3(3.14)(4 cm)^3
V=4/3)(3.14)(64 cm^3)
V=267.9 cm^3
The volume of the sphere is 267.9 cubic centimeters.

7 0
3 years ago
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Simplify (5x^3+7x-8)+(2x^3-5x^2-x+3)​
Anna [14]

Answer:

Step-by-step explanation:

8 0
3 years ago
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