Answer: x=-2 y=2
Step-by-step explanation:
I decided that isolating the y value of the second equation is the best way to start solving.
I divide 3 from both sides to get y= (4-x)/3. With this, I can substitute into the first equation. 4x+3(4-x)/3)=-2.
The multiplying the 3 by the denominator three cancels each other out to make:
4x+4-x=-2.
We subtract 4 on both sides and then subtract x from 4x.
We end up with 3x=-6. Then, we divide both sides by 3.
x=-2.
Now we substitute this into the second equation to solve.
3y=4-(-2)
This becomes 3y=4+2 which is 3y=6
We divide both sides by 3 to get y=2
We end up with x=-2 and y=2.
I hope you learned something :)
Answer:
96 km
Step-by-step explanation:
72/3 is 24. When yo add 24 to 72 you get 96km.
Answer:
1500
Step-by-step explanation:
1481 to the nearest hundred is 1500 because 8 is nearer to 10
Answer: 40 unit²
Step-by-step explanation:
A square pyramid is composed of 1 square and 4 congruent triangles
STEP ONE. Find the area of the square.
A=b²
b=base
A=b²=4²=14
STEP TWO. Find the area of the triangle
A=(1/2)bh
b=base
h=height
A=(1/2)bh
A=(1/2)(4)(3)
A=(1/2)(12)
A=6
There are 4 congruent triangles, so 6×4=24
The surface area of whole=24+16=40 unit²
Hope this helps!! :)
Please let me know if you have any questions
Answer:
I will demonstrate the first two for you. The answer is 6, <u>30</u>, <u>54</u>, <u>78</u>, 102.
The answer to the second question is -3,<u> 21,</u> <u>45</u>, <u>63,</u> 93.
Step-by-step explanation:
Pardon the messiness. I hope this clarifies how to do it from now on! If not, please let me know if you need more help! xoxo
