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Zepler [3.9K]
4 years ago
11

6. Which equation represents: "Seven times the difference of a number and tenis

Mathematics
2 answers:
enot [183]4 years ago
7 0

Answer:

12

Step-by-step explanation:

let the number=x

7(x-10)=x+2

7x-70=x+2

7x-x=2+70

6x=72

x=72/6=12

mojhsa [17]4 years ago
4 0
The correct answer would be 12
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Tan 45°. tan² 30° tan 60° <br>slove it​
makvit [3.9K]

Answer:

\frac{\sqrt{3} }{3} or \frac{1}{\sqrt{3} }

Step-by-step explanation:

We can break the problem into three parts,

tan45 = sin(45)/cos(45)=\frac{\frac{\sqrt{2}}{2} }{\frac{\sqrt{2}}{2} } =1

tan^{2}30 =(tan30))^{2}=(sin30/cos30)^2=((1/2)/(\sqrt{3}/2))^2 =(1/\sqrt{3})^2

tan60=sin60/cos60=\frac{\sqrt{3}/2 }{1/2} =\sqrt{3}

Then, tan45*tan^230*tan60=1*(1/sqrt(3))^2*sqrt(3)=1/sqrt(3)=sqrt(3)/3

Therefore, the solution is sqrt(3)/3

4 0
2 years ago
Convert: 15°C to °F<br><br> -9<br> -31<br> 59<br> 164
Anton [14]
15 is 59
-9 is 15.8 so 16
-31 is 28.8 so 29
59 is 138.2
164 is  327.2


6 0
4 years ago
A $17,000 T-bill is purchased at a 2.75% discount rate for 20 weeks.
SVEN [57.7K]
The effective rate of interest to the nearest hundredth of a percent is 2.75%

Given:
T-bill value $17,000
purchased at a discount rate of 2.75%
term of 20 weeks.

An effective rate of interest is also referred as the DISCOUNT RATE, market interest rate, the internal rate of return, the annual percentage rate, and yield to maturity. 

Since the discount rate is given, it is also the effective rate of interest.
3 0
4 years ago
For all real numbers, x^2 ≥x.
BlackZzzverrR [31]
1/2 because it is a fraction
8 0
3 years ago
A=2, b=3, and c=6. Solve: a +b=
dsp73
Answer: 5

Step by step: a=2 and b=3 so it’s 2+3 which equals 5
7 0
3 years ago
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