2 figures are congruent if at least 2 sides are the same length, there angles are the same, etc
Answer:
D is the answer
Step-by-step explanation:
Well 35 dollar one time fee
plus 15 per hour
If used 1 hour 15+35=50
Assuming that you got the numbers right and that I did my calculations right, then the answer is <span>2998.45 tons.</span>
Answer:
Step-by-step explanation:
Given
Required
Determine the inequality
Assume she wants to buy n CDs.
If 1 CD costs $10, then n CDs costs 10n.
So, the inequality is:
<em>We used </em>
<em> because the amount she wants to spend cannot exceed 30</em>
Divide both sides by 10, to solve for n
Answer:
added cement = 200 kg
Step-by-step explanation:
Sand = 0.8*1400
Sand = 1120 kg
If 1120 kg of sand represents the total sand in the 8:2 mixture.
We have to create the equation of the 7:3 mixture as follows.
The sand amount continues the same but the total amount of the mixture and cement will change.
0.7*mixture_mass + 0.3*mixture_mass = mixture_mass
By replacing values, we have:
1120 kg + 0.3*(1400 kg + added cement)= 1400 kg + added cement
added cement = 200kg
