Answer:
![m=1,479\ g](https://tex.z-dn.net/?f=m%3D1%2C479%5C%20g)
Step-by-step explanation:
<u><em>The complete question is</em></u>
How do you calculate the mass of a solid copper cuboid with a density of 9.86 g/cm^3. The dimensions of the cuboid are 10 cm by 3 cm by 5 cm
step 1
Find the volume of the cuboid
![V=(10)(3)(5)=150\ cm^3](https://tex.z-dn.net/?f=V%3D%2810%29%283%29%285%29%3D150%5C%20cm%5E3)
step 2
Find the mass
we know that
To find out the mass multiply the density of the solid by its volume
so
![m=(9.86)(150)=1,479\ g](https://tex.z-dn.net/?f=m%3D%289.86%29%28150%29%3D1%2C479%5C%20g)
Answer:
- 40
Step-by-step explanation:
![5(a - 4b) \\ = 5 \bigg(- 7 - 4 \times \frac{1}{4} \bigg ) \\ = 5 \bigg(- 7 - 1 \bigg ) \\ = 5 \times ( - 8) \\ = - 40](https://tex.z-dn.net/?f=5%28a%20-%204b%29%20%5C%5C%20%20%3D%205%20%5Cbigg%28-%207%20-%204%20%5Ctimes%20%5Cfrac%7B1%7D%7B4%7D%20%5Cbigg%20%29%20%5C%5C%20%3D%205%20%5Cbigg%28-%207%20-%201%20%5Cbigg%20%29%20%5C%5C%20%20%3D%205%20%5Ctimes%20%28%20-%208%29%20%5C%5C%20%20%3D%20%20-%2040)
Answer:
1. 8n + 4
2. 5x +13
3. X + 3
4. X - 6
5. 4x + 1
Step-by-step explanation:
1.
2n + 6 and 6n -2 so simply addition will be
2n +6 +6n -2
8n +4
2.
3x + 9 + 2x + 4
5x + 13
3.
3x + 5 - 2x -2
X +3
4.
4x + 3 - 3x -9
X -6
5.
6x + 2 - 2x -1
4x + 1
Step-by-step explanation:
i need the question
for the excellent
answer
Step-by-step explanation:
x²+3x-10
=x²+5x-2x-10
=x×(x+5)-2x-10
=x×(x+5)-2(x+5)
=(x+5)×(x-2)
=(x+5)×(x-2)