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3 years ago

8

HELP PLEASE! WORTH 30 POINTS! In this diagram, both polygons are regular. What is the value, in degrees, of the sum of the measu

res of angles ABC and ABD?

2 answers:

lara [203]3 years ago

8 0

that is the sum of the interior angles of a triangle,or the 3 sided polygons

Mrrafil [7]3 years ago

3 0

Where is the image or is that the whole question

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Select the best method of finding an accurate solution to a system of linear equations

Flura [38]

The best method for solving the system of linear equation is by the use of algebraic methods.

The system of linear equations can be solved by using the method of simultaneous equations. Here we are given two equations and two unknown variables. We can solve the same by eliminating one of the variables and then either adding or subtracting, find the value of the other variable. Once we know the value of one variable, then we can substitute its value in any one given equation and find the second variable. This method is said to be accurate and does not involve any error.

Hence answer is : USE ALGEBRAIC METHODS

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3 years ago

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A chemist needs 130 milliliters of a 47% solution but has only 35% and 87% solutions available. Find how many milliliters of eac

choli [55]

Answer: Amount of 35% solution required = 100 milliliters

Amount of 87% solution required = 30 milliliters

Step-by-step explanation:

Given: Total solution required = 130 milliliters

Let x = Amount of 35% solution (in milliliters).

Then, Amount of 87% solution required = 130 - x

As per given,

Concentration = 0.35x +0.87(130-x)=0.47(130)

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3 years ago

Amy has 2$, Jack has 3 times as much as Amy. Catherine has twice as much as Jack. How much does Catherine have?

worty [1.4K]

Catherine has 12.

2 times 3 is 6. 6 times 2 is 12. Final answer is 12.

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3 years ago

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Fantom [35]

Answer:

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Step-by-step explanation:

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3 years ago

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patriot [66]

Answer:

239

Step-by-step explanation:

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$x = 90$

Arc Addition:

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3 years ago