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Alona [7]
3 years ago
8

Find the sum of ∠BCD and ∠SBT in terms of x.

Mathematics
2 answers:
AleksAgata [21]3 years ago
4 0
Let's\ \angle TCB=y^o\\\\\angle SBT\ is\ the\ exterior\ angle\ of\ \Delta TCB,\ therefore\ |\angle SBT|=x^o+y^o.\\\\|\angle\ BCD|\ +\ y^o=180^o-angles\ on\ one\ side\ of\ a\ straight\ line\\\\|\angle BCD|=180^o-y^o\\\\therefor\\\\\angle SBT+\angle BCD=x^o+y^o+180^o-y^o=x^o+180^o\\\\\boxed{Answer:\angle SBT+\angle BCD=x^o+180^o}
skad [1K]3 years ago
4 0
Hello,

If we draw the parallele of AB passing through B
<span>∠SBT=x+x=2x
</span><span>∠BCT=x ==></span><span>∠BCD=180°-x
</span>
∠SBT+<span>∠BCD=2x+180°-x=180°+x

</span>
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Please help me I have a test tomorrow
yarga [219]

#5 is very nicely and correctly done.

#7 says: "No matter what X may be, this function of it is always 9 more than 1/2 of X .".

That's a very powerful statement. Now you know that if X is ever 2, the function will be 1/2(2)+9 which is 10.

If X is ever zero, the function will be 1/2(0)+9 which is 9. If X is ever a cow, the function will be 1/2 of a cow, plus the number 9. Which makes no sense, but that's what the function says.

So, when X is -8, the function is 1/2 of -8, plus 9. Which is 5 ... the 'f' of -8.

Whatever X happens to be at the moment, just write that number in place of X in the function, and it'll show you the function of what X is.

f(a bazillion) = 1/2(a bazillion) + 9 .

f(a-28) = 1/2(a-28) + 9 (but simplify it)

7 0
3 years ago
Many fundraisers ask for donations using email and text messages. A paper describes an experiment to investigate whether the pro
blagie [28]

Answer:

b. donations using text message

d. donations using email

Step-by-step explanation:

From the question, it is clear that the people who received these requests were assigned to two groups and these 2 were assigned treatments of if they make donations after either receiving email or text messages after which their respective proportions p1 and p2 are determined.

7 0
3 years ago
True or False:<br> There are an infinite number of answers for this equation:<br> 63 - X = 34
Shtirlitz [24]

Answer: No, the answer is 29, this is false.

Step-by-step explanation: 63-x=34

subtract 63 from both sides

34-63= -29

-x=-29

divide both sides by the negative and you get 29

plug in 29 for x, 63-29=34

8 0
3 years ago
Read 2 more answers
I really need help with this FAST PLEASE!!!!!
Evgen [1.6K]
It is 1 and - 3 so b yeah
8 0
3 years ago
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A semicircle has a radius of 8.2cm and pi=3.142 work out the area of the semicircle to 1 decimal place
Pepsi [2]
Is there a picture ?
7 0
2 years ago
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