\(\frac{a}{2}=\frac{b}{8}=\frac{a+b}{2+8}=\frac{180}{10}=18\)
a=2.18 =36
b=8.18=144
=>yOz =144 độ
Đúng 0
Bình luận (0)
Các câu hỏi tương tự
If x is directly proportional to y with the scaling factor is 8, z is directly proportional to x with the scaling factor is 4.
Then z is directly proportional to y with the scaling factor is .
If 5x+2y/3 = y-4x/5 and x+3y=-8 then 13 (x+y)=...
If 5x+2y/3 and x+3y=-8 then 13(x+y)=
27 tháng 11 2023 lúc 19:15
true or false 1, If Ox and Oy are opposite rays then widehat{xOy180^o}2,If Ox and Oy are parallel then widehat{xOy}180^o or widehat{xOy}0^o3, If widehat{xOy}90^o then widehat{xOy} is a straight angle4, If widehat{xOy} +widehat{yOz}180^o then widehat{xOy} and widehat{yOz} are complementary5, If widehat{xOy} is larger than widehat{xOz} then widehat{xOz} is an acute angle6, the lagest angle which is form by two rays is an obtuse angle7, Two acute angles cannot be supplementary8,widehat{xOy} and wi...
Đọc tiếp
true or false
1, If Ox and Oy are opposite rays then \(\widehat{xOy=180^o}\)
2,If Ox and Oy are parallel then \(\widehat{xOy}=180^o\) or \(\widehat{xOy}=0^o\)
3, If \(\widehat{xOy}=90^o\) then \(\widehat{xOy}\) is a straight angle
4, If \(\widehat{xOy}\) +\(\widehat{yOz}=180^o\) then \(\widehat{xOy}\) and \(\widehat{yOz}\) are complementary
5, If \(\widehat{xOy}\) is larger than \(\widehat{xOz}\) then \(\widehat{xOz}\) is an acute angle
6, the lagest angle which is form by two rays is an obtuse angle
7, Two acute angles cannot be supplementary
8,\(\widehat{xOy}\) and \(\widehat{yOz}\) are adjacent
9, if \(\widehat{xOy}\) and \(\widehat{zOy}\)are supplementary then one of them must be an obtuse angle
10,if \(\widehat{xOy}\) and \(\widehat{yOz}\) are adjacent then \(\widehat{xOy}\) > \(\widehat{xOz}\)
11, If Ox lies between Oy and Oz then \(\widehat{xOy}\) and \(\widehat{yOz}\) are adjacent
A, if a is real number ,then a is ... Number or ...number.
B, if b is irrational, then b is written in the from of...
Tìm 3 số x,y,z biết rằng x/2 = y/4; y/8 = z/5 và x+y-z= 9
A. x=3, y=4, z=-2
B. x=6, y=8, z=5
C. x=-6, y=-8, z=-23
D. x=-6, y=8, z=5
tìm x,y
a) x-3+y/x+5 = y-2/3 = y+3/2
b) x+2y = 2x - y = x : y với y khác o
c) x-1/2 = y-3/4 = z+5/3 và x + y +z = 8
d) x+3/4 = 2x-1/3 = 4/ x+y+1
1
a, x/20 = y/9 = z/6 và x - 20/y + 4 =13
b,x/3 = y/4 : y/5 = 2/7 và x - y - z = 46
c,x/2 = 2y/5 = 42/7 và 3x . 5y . 7z = 123
d,x/2 = 2y/3 =32/4 và x . y .z -108
2
a, a/4 = b/6 ; b/5 =c/8 và 5k -3b =-536
b, a/7 = b/6 ;b/5= c/8 và a -2b + c = 46
c, 5 . a =8.b = 3.c và a-2b =c = 24
d, a + 3/5 = b -2/3 = c - 1/7 và a+b+c =24
e,a/2 = b/3 = c/4 và a^2 + 3 . b^2 - 2 . c^2 = -16
If 5x+2y/3=y-4x/5 and x+3y=-8 then 13(x+y)=................
Giúp mk mí sau mk tick cho