Answer:
1. 14
2. 20
3. 12
4. -400
5. 6
6. 21
7. 11
8. 16
9. 40
10. 49
11. 12
12. IDK
Step-by-step explanation:
1. 16-2=14
2. 16+4=20
3. 6 X 2 = 12
4. -400/-10 (negative divided by a negative equals a positive) = 40
5. 6 X 6 = 36
6. 16+5=21
7. 23-12=11
8. 4 X 16 = 64
9. 36-16=20, 20 X 2 = 40
10. 400-8=392, 392/8= 49
11. 912-612=300, 300/25 = 12
12. Sorry too confusing.
What do bones do?
1.) They help us keep our structure.
2.) They protect inner organs.
3.) They produce blood cells in bone marrow.
4.) They allow us to move.
5.) They store minerals and some fats.
I hope this helps!
Answer:
20kg of 25% copper alloy
30kg of 60% copper alloy
Step-by-step explanation:
There are 2 kinds of metal, first metal(A) have 25% copper while the second metal(B) has 60% copper. The metalworker want to create 50kg of metal, which means the total weight of both metals is 50kg (A+B = 50). The metalworker also want the metal made of a 46% which is 23kg(0.25A + 0.6B = 0.46*50). From these sentences, we can derive 2 equations. We can solve this with substitution.
A+B = 50
A= 50-B
Let's put the first equation into the second.
0.25A + 0.6B = 0.46 *50
0.25(50-B) + 0.6B =23
12.5 - 0.25B + 0.6B =23
0.35B=23 -12.5
B= 10.5/ 0.35= 30
Then we can solve A
A= 50-B
A= 50-30
A=20
Answer:
The answer to the question is
She invested
Php2700.00 at 8 % and
Php 20,400.00 at 11 %
Step-by-step explanation:
To solve the question we note that
Simple interest is given by 
where
P= Principal, R = Rate and T = Time
If we call the first part P₁, T₁, and R₁ and the second part
P₂, T₂, and R₂
Then 
= 2700×0.08×1 + P₂×0.11×1 = 2460 which gives
2244÷0.11 = P₂ or P₂ = Php 20,400.00
That is she invested
Php2700.00 at 8 % and
Php 20,400.00 at 11 %
