Rate for 1 mile is 1.75$+0.75$=2.50$
Jack has 10 $ to spend
when 2.50$ for 1 mile
so 10 $ for 10/2.50=4 mile he can travel
Answer:
The last one
Step-by-step explanation:
Simply because if you have a higher negative number, the smaller the quantity.
Answer:
-2x2a • (2x2 + 4b - 5)
Step-by-step explanation:
Step by step solution :
Step 1 :
Equation at the end of step 1 :
2xa • ((-4xb - 2x3) + 5x)
Step 2 :
Step 3 :
Pulling out like terms :
3.1 Pull out like factors :
-2x3 - 4xb + 5x = -x • (2x2 + 4b - 5)
Trying to factor a multi variable polynomial :
3.2 Factoring 2x2 + 4b - 5
Try to factor this multi-variable trinomial using trial and error
Factorization fails
Multiplying exponential expressions :
3.3 x1 multiplied by x1 = x(1 + 1) = x2
Final result :
-2x2a • (2x2 + 4b - 5)
The question is an illustration of permutation and combinations.
- The number of ways she can choose 4 out of the 7 paintings is 35
- The number of ways she can arrange 4 out of the 7 paintings is 840
The given parameters are:
<u>(a) Choose 4 of 7 paintings</u>
Choosing 4 of 7 paintings implies combination.
So, we have:
Substitute values for n and r
Expand
Hence, the number of ways she can choose 4 out of the 7 paintings is 35
<u>(b) Arrange 4 of 7 paintings</u>
Arranging 4 of 7 paintings implies permutation.
So, we have:
Substitute values for n and r
Expand
Hence, the number of ways she can arrange 4 out of the 7 paintings is 840
Read more about permutation and combinations at:
brainly.com/question/15301090