Answer:
s
General Formulas and Concepts:
<u>Pre-Algebra</u>
<u>Algebra I</u>
Step-by-step explanation:
<u>Step 1: Define</u>
(-7s + 4) - (-8s + 4)
<u>Step 2: Simplify</u>
- Distribute negative: -7s + 4 + 8s - 4
- Combine like terms (s): s + 4 - 4
- Combine like terms (Z): s
Answer:
What topic is this and which grade are u in?
Answer: 12 metres
Step-by-step explanation:
The scale factor used for the model is 1 : 30.
This means that for any 1cm on the model, the real boat would be 30 cm.
If the height is 40 cm on the model, the real boat will be 30 times that:
= 40 * 30
= 1,200 cm
A metre is equivalent to 100cm.
1,200 cm would therefore be:
= 1,200/100
= 12 metres
Answer:
P = 7 and q = 5
Step-by-step explanation:
Answer:
Step-by-step explanation:
3p + 7q= 56...(1 )
5p + 7q = 70.... (2)
Using elimination method to solve this
Substract equation 1 from 2 , this becomes:
5p - 3p + 7q-7q = 70-56
5p-3p + 0 = 15
2p = 14
Next step is to divide both 2 to get p
2p/2 = 14/2
P= 7
To get q, input p= 7 into equation 1 which is
3p +7q =56, 3(7) + 7q= 56
21+ 7q = 56, 7q= 56-21
7q= 35( divide both sides by 7)
q = 5.
Since p= 7 and q= 5, let's input values for p and q into both equation.
Equation 1: 3p + 7q= 56
3(7) + 7(5) = 56,
21 + 35 = 56.
For equation 2: 5p + 7q = 70
5(7) + 7(5) = 35 + 35 = 70.