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Alecsey [184]
2 years ago
6

A dental filling is 9 carats. what percent of the filling is gold?

Mathematics
2 answers:
Law Incorporation [45]2 years ago
5 0

Answer:

So i say maybe 35% - 39%

Step-by-step explanation:

At 10 karats, the alloy is about 40% gold. At 20 karats, it's roughly 80%.

alexandr1967 [171]2 years ago
3 0

Answer:

Lower than 50%

Step-by-step explanation:

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in 6th grade, miguel read 15 books. In 7th grade, he read 21 books. What was the percentage change in the number of miguel read
Savatey [412]

Answer:

40%

Step-by-step explanation:

(21-15)/15=0.4

0.4×100=40

5 0
3 years ago
Write the equation in slope-intercept form.<br> 5x +<br> 5y = 35
vekshin1

Answer:

y = -x + 7

General Formulas and Concepts:

<u>Pre-Algebra</u>

Equality Properties

  • Multiplication Property of Equality
  • Division Property of Equality
  • Addition Property of Equality
  • Subtract Property of Equality

<u>Algebra I</u>

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

[Standard Form]   5x + 5y = 35

<u>Step 2: Rewrite</u>

<em>Find slope-intercept form.</em>

  1. Subtract 5x on both sides:                    5y = -5x + 35
  2. Divide 5 on both sides:                         y = -x + 7
4 0
3 years ago
OH NO i forgot what 2 + 2 is helppp (lol)
trasher [3.6K]

Answer:

4

Step-by-step explanation:

7 0
2 years ago
Read 2 more answers
5x-18&lt;-8 I need help step by step
drek231 [11]

Answer:

x < 2

Step-by-step explanation:

5x - 18 <  - 8 \\ 5x - 18 + 18 <  - 8 + 18 \\ 5x < 10 \\  \frac{5x}{5}  <  \frac{10}{5}  \\ x < 2

8 0
3 years ago
At witch value in the domain does f(x)=0?
Gnom [1K]

Answer:

Step-by-step explanation:

<u>f(x)=0</u>

Domain are the set of x values

f(x)=0 , we find all the x values where y =0

At x intercepts y is always 0

so we find all the x intercepts.

x intercepts are the points where the graph crosses x axis

In the graph we can see that the graph crosses x axis at

<em>-2.5 , -0.75 and 1</em>

<u><em>-2.5 , -0.75 and 1 are the domain where f(x)=0</em></u>

6 0
3 years ago
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