Answer:
a
Step-by-step explanation:
y=3x
thus, a proportional relationship equation is y=kx .Where k is constant
Answer:
I only know A
Step-by-step explanation:
A 37-9=28
I'm sorry I just have no idea what to do on the other ones xD
A. 69 degrees
exterior angles should equal 360 degrees so just add 131+160= 291 , 360-291= 69 degrees
or u can find it by finding the interior angle degrees by using supplementary angles. 180-131= 49 , 180-160= 20, 20+49=69, 180-69= 111 so the missing exterior angle corresponding interior is 111 and u can use supplementary angles to find the exterior. 180-111= 69 degrees
ANSWER
10.0 ------- Vivian is correct
EXPLANATION
Firstly, find the cube root of 1010
![\sqrt[3]{1010\text{ }}\text{ = 10.033}](https://tex.z-dn.net/?f=%5Csqrt%5B3%5D%7B1010%5Ctext%7B%20%7D%7D%5Ctext%7B%20%3D%2010.033%7D)
In the above calculation, the cube root of 1010 is 10.003
The correct approximation of the above value is 10.0. This is because the hundredth value is not upto 5
Recall, figures from 1 - 4 are rounded to zero and figures from 5- 9 are rounded up to 1
since 3 is not upto 5, so it is rounded down to zero
Therefore, Vivian is correct
2.1x + 4.2y = 14.7 is the same as x + 2y = 7 (divide both sides by 2.1)
-5.7x-1.9y=-11.4 is the same as 3x + y = 6 (divide both sides by -1.9)
Rearrange the first equation to get x = 7 - 2y and substitute into the second equation, 3(7 - 2y) + y = 6, 21 - 6y + y = 6, 5y = 15, y = 3
Substitute y = 3 into the first equation x + 2(3) = 7, x = 1
x = 1 and y = 3
