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3 years ago

Nine tenths minus one third

2 answers:

6 0

27/30 minus 10/30 is 17. You convert both fractions to the same denominator, (30) for instance to get 9/10 to 27/30 you multiply both the top and the bottom by 3. If you need any clarification, just ask! :)

Shtirlitz [24]3 years ago

4 0

I think you want to write it

so it's:

9-1/3

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What is the domain of (49,infinity) in inequality form?

valentinak56 [21]

$(a,b)=\{x|a\ \textless \ x\ \textless \ b\}$

In our case:

$(49,\infty) \Rightarrow 49\ \textless \ x$

3 0

3 years ago

Simplification <br>-4a+b+3c+3a-3b+c

damaskus [11]

Answer:

-a+-2b+4c

Step-by-step explanation:

Combine like terms

-4a+ 3a= -a

b+ -3b= -2b

3c+ c= 4c

7 0

3 years ago

I need help for this, thanks

gulaghasi [49]

(a) Yes all six trig functions exist for this point in quadrant III. The only time you'll run into problems is when either x = 0 or y = 0, due to division by zero errors. For instance, if x = 0, then tan(t) = sin(t)/cos(t) will have cos(t) = 0, as x = cos(t). you cannot have zero in the denominator. Since neither coordinate is zero, we don't have such problems.

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(b) The following functions are positive in quadrant III:

tangent, cotangent

The following functions are negative in quadrant III

cosine, sine, secant, cosecant

A short explanation is that x = cos(t) and y = sin(t). The x and y coordinates are negative in quadrant III, so both sine and cosine are negative. Their reciprocal functions secant and cosecant are negative here as well. Combining sine and cosine to get tan = sin/cos, we see that the negatives cancel which is why tangent is positive here. Cotangent is also positive for similar reasons.

5 0

3 years ago

Find the value of x. Round to the nearest tenth.

Yuki888 [10]

Answer:

Step-by-step explanation:

SOH

sinФ = opposite/hypentenous

sin35 = x/20

0.574 = x/20

cross multiply

x = 20(0.574)

x = 11.48

Round to the nearest tenth.

x = 11.5

3 0

3 years ago

Help with these math questions grade 12

nalin [4]

Answer:

1. 15.1%

2. 8.3%

3. 12%

4. 25%

Step-by-step explanation:

percent change = (new number - old number)/(old number) * 100%

percent change = (21300 - 18500)/(18500) * 100%

percent change = 15.1%

A positive percent change is a percent increase.

Answer: The percent increase is 15.1%.

percent change = (new number - old number)/(old number) * 100%

percent change = (298000 - 325000)/(325000) * 100%

percent change = -8.3%

A negative percent change is a percent decrease.

Answer: The percent decrease is 8.3%.

percent change = (new number - old number)/(old number) * 100%

percent change = (110 - 125)/(125) * 100%

percent change = -12%

A negative percent change is a percent decrease.

Answer: The percent decrease is 12%.

percent change = (new number - old number)/(old number) * 100%

percent change = (1500 - 2000)/(2000) * 100%

percent change = -25%

A negative percent change is a percent decrease.

Answer: The percent decrease is 25%.

5 0

3 years ago