D + r = 95.....d = 95 - r
8d + 5r = 628
8(95 - r) + 5r = 628
760 - 8r + 5r = 628
-8r + 5r = 628 - 760
-3r = -132
r = -132/-3
r = 44 <== regular cones
d + r = 95
d + 44 = 95
d = 95 - 44
d = 51 <== deluxe cones
Answer:
it should be c but im not a 100% sure so if its wrong plz dont be mad i learned this 2 years ago i dont remember... *so much*
Step-by-step explanation:
Answer:
The table C correctly shows the ratio 8:1 for each grade
Step-by-step explanation:
Let
x ----> the number of students
y ----> the number of adults
we know that
![\frac{x}{y}=\frac{8}{1}](https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7By%7D%3D%5Cfrac%7B8%7D%7B1%7D)
<u><em>Verify each table</em></u>
Table A
grade 6
![\frac{96}{88}=\frac{8}{1}](https://tex.z-dn.net/?f=%5Cfrac%7B96%7D%7B88%7D%3D%5Cfrac%7B8%7D%7B1%7D)
Multiply in cross
----> is not true
Table B
grade 6
![\frac{96}{104}=\frac{8}{1}](https://tex.z-dn.net/?f=%5Cfrac%7B96%7D%7B104%7D%3D%5Cfrac%7B8%7D%7B1%7D)
Multiply in cross
----> is not true
Table C
<u><em>grade 6</em></u>
\frac{96}{12}=\frac{8}{1}
Multiply in cross
![96(1)=8(12)](https://tex.z-dn.net/?f=96%281%29%3D8%2812%29)
----> is true
<u><em>grade 7</em></u>
![\frac{120}{15}=\frac{8}{1}](https://tex.z-dn.net/?f=%5Cfrac%7B120%7D%7B15%7D%3D%5Cfrac%7B8%7D%7B1%7D)
Multiply in cross
![120(1)=8(15)](https://tex.z-dn.net/?f=120%281%29%3D8%2815%29)
----> is true
<u><em>grade 8</em></u>
\frac{136}{17}=\frac{8}{1}
Multiply in cross
![136(1)=8(17)](https://tex.z-dn.net/?f=136%281%29%3D8%2817%29)
----> is true
therefore
The table C correctly shows the ratio 8:1 for each grade
Table D
<u><em>grade 6</em></u>
![\frac{96}{11}=\frac{8}{1}](https://tex.z-dn.net/?f=%5Cfrac%7B96%7D%7B11%7D%3D%5Cfrac%7B8%7D%7B1%7D)
Multiply in cross
----> is not true
Answer:
49/4
Step-by-step explanation:
x^2+7x=4
Take the coefficient of x
7
Divide by 2
7/2
Then square it
(7/2) ^2 = 49/4
Add this to both sides of the equation to complete the square
Answer:
60
Step-by-step explanation:
A= bh
A = 6 x 10
A = 60