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olga2289 [7]
2 years ago
13

Which of the following equations shows how substitution can be used to solve the following system of equations?

Mathematics
1 answer:
klasskru [66]2 years ago
5 0

Answer:

i have  no idea does anyone else know

Step-by-step explanation:

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Find the area of the shaded region. The radius of the large circle is 10 m. Round answer to the nearest hundredth.
vivado [14]

Answer:

hello the figure related to your question is missing attached below is the missing figure

answer : 157.08 m^2

Step-by-step explanation:

Calculate the area of the shaded area

= Area of the large circle - Areas of the small circles

= (( \frac{\pi }{4} ) * D^2) - 2(  ( \frac{\pi }{4} ) * d^2 )     given that the small circles are congruent

= (( \frac{\pi }{4} ) * 20^2 ) - 2 ( ( \frac{\pi }{4} ) * 10^2 )

= 314.16 - 157.08

= 157.08 m^2

8 0
3 years ago
The marketing department of a sports supply store wants to estimate the percentage of adults in the town who belong to a gym.
velikii [3]
A) If you only sample people in a sports supply store, your sample will be biased.  People in a sports supply store are more likely to be people that belong to a gym.
B) While it does not have necessarily the same amount of bias as sampling people in the sports supply store, people that go to a park are generally more likely to be people that exercise or have a gym membership.
C) Taking a random sample of people in town is a good way to get a non-biased sample.  They are not necessarily predisposed to answer your question one way or another.
D) For the same reason as choice A, this is a biased sample.

C is the best choice.
4 0
2 years ago
GI and JL are parallel lines.<br><br> Which angles are supplementary angles?
solmaris [256]

Answer:

The answer is A.

Step-by-step explanation:

A supplementary angles are angles that when adding both sides will sum up to 180 Degrees.

<JKH and <LKH will be the correct answer because they add up tp 180 degrees.

Star Me!!!

6 0
3 years ago
51% of the animals at an animal shelter are dogs. About what fraction of the animals at the shelter are dogs?
andrew-mc [135]
I think the answer is 51/100

5 0
2 years ago
Read 2 more answers
I really need this pls
Schach [20]

Answer:

\displaystyle m=\frac{-2}{3}

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right<u> </u>

<u>Algebra I</u>

  • Reading a Cartesian plane
  • Coordinates (x, y)
  • Slope Formula: \displaystyle m=\frac{y_2-y_1}{x_2-x_1}

Step-by-step explanation:

<u>Step 1: Define</u>

<em>Find points from graph.</em>

Point (3, 1)

Point (0, 3)

<u>Step 2: Find slope </u><em><u>m</u></em>

Simply plug in the 2 coordinates into the slope formula to find slope <em>m</em>

  1. Substitute in points [Slope Formula]:                                                            \displaystyle m=\frac{3-1}{0-3}
  2. [Fraction] Subtract:                                                                                         \displaystyle m=\frac{2}{-3}
  3. [Fraction] Rewrite:                                                                                          \displaystyle m=\frac{-2}{3}
3 0
3 years ago
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