Answer:
Alloy = 12.6 lbs.
Step-by-step explanation:
( 2/7 ) = ( Nickel /4.9)
Nickel = 1.4 lbs.
Ratio of Copper to Zinc:
( 9/7 ) = ( Copper /4.9)
Copper = 6.3 lbs.
Alloy = Zinc + Nickel + Copper
Alloy = 4.9 lbs. + 1.4 lbs. + 6.3 lbs.
Alloy = 12.6 lbs.
Answer:
y=-8
Step-by-step explanation:
Let's solve your equation step-by-step.
15y−4=12y−28
Step 1: Subtract 12y from both sides.
15y−4−12y=12y−28−12y
3y−4=−28
Step 2: Add 4 to both sides.
3y−4+4=−28+4
3y=−24
Step 3: Divide both sides by 3.
3y
3
=
−24
3
y=−8
<h2>Differentiation:</h2><h3><u>Pyramids:
</u></h3>
- Pyramids have base which are in triangular or square shape which connects with the base.
- Pyramids have only one base.
- In pyramids, all sides are parallel to each other and they all meet at apex.
<h3><u>Prisms:
</u></h3>
- Prisms have two ends in a geometrical structure with same structure along the length.
- Prisms are widely used in optics.
- Prisms have two bases.
- In prisms, the base and the sides are perpendicular to each other.
The base is 7 units and the height is 3 units