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creativ13 [48]
3 years ago
15

Help pleaseeeeeeeeee

Mathematics
1 answer:
Korolek [52]3 years ago
7 0

Answer:

2x+2x is 4 +3x is 12+ 1 is 13 + 3 is 15 - 2 is 13 -1 is 12

so x=15

and y=12

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: Cho tam giác ABC vuông tại C, trong đó AC = 0,9m, BC = 1,2m. Tính các tỉ số lượng giác của góc B, từ đó suy ra các tỉ số lượng
Xelga [282]

Answer:

Step-by-step explanation:

Vì tam giác ABC vuông tại C nên ta áp dụng định lí pitago=> AB²=AC²+BC²=0.9²+1.5²=3.06=>AB= (3 căn bậc hai của 34)/10

sin B=AC/AB=(3 căn bậc hai của 34)/34

cos B=BC/AB

tan B= AC/BC

cot B= BC/AC

Tương tự suy ra tỉ số lượng giác góc A

5 0
3 years ago
If 7x+3=24, find the value of -5 - 6x.<br><br> a)-23<br> b)-7<br> c)1<br> d)17
OlgaM077 [116]
A. -23

If 7x plus 3 equals 24, X equals 3. -5 minus 6 time X(3) equals -23.
6 0
3 years ago
I can't manage. Can you help? Ty :)​
grigory [225]

first question is true and second question is 6cm

5 0
2 years ago
Rational formulas and variations
Zanzabum

Answer:

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I hope this is good enough:

7 0
2 years ago
How do you solve this problem?
Leona [35]
Make it better can't read it sorry
4 0
3 years ago
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