Answer:176 psychology textbooks and 98 Biology textbooks were sold.
Step-by-step explanation:
Let x represent the number of psychology textbooks that were sold.
Let y represent the number of biology textbooks that were sold.
textbook store sold a combined total of 274 psychology and biology textbooks in a week. This means that
x + y = 274 - - - - - - - - - - -1
The number of psychology textbooks sold was 78 more than the number of biology textbooks sold. This means that
x = y + 78
Substituting x = y + 78 into equation 1, it becomes
y + 78 + y = 274
2y = 274 - 78
2y = 196
y = 98
x = y + 78 = 98 + 78
x = 176
Answer: 2. Enlargement
Explanation: there are prime number markings on the bigger shape. This shows that the smaller shape was the original one and to turn into the bigger one, it had to grow/get bigger.
Therefore, the answer is the first choice.
Answer:
Here,
JM=MK
so,
7x+5 = 8x
. ° . JM = 7x+5 = 7×5+5 = 40
. ° . MK = 8x = 8×5 = 40
Hence,
<h3>MK = 40</h3>
In mathematics, a proof is a deductive argument for a mathematical statement. In the argument, proven statements such as theorems, can be used. In principle, a proof can be traced back to self-evident or assumed statements, known as axioms. the two column proof uses data and theorems to carry out thorough proving.
