Answer:
the answer is D
Step-by-step explanation:
Answer:
a = 7
b = 7
Step-by-step explanation:
in a 45-45-90° triangle, the length of legs to hypotenuse is 1 :
Answer:
a^2
−10a+21
Step-by-step explanation:
(a−7)(a−3)
Apply the distributive property by multiplying each term of a−7 by each term of a−3.
a^2
−3a−7a+21
Combine −3a and −7a to get −10a.
a^2
−10a+21
Answer:
20
Step-by-step explanation:
Given that: $3.25 in dimes and nickels were distributed among 45 boys.
1 nickel = $0.05
1 dime = $0.10
Let number of coins of dimes be x and the number of coins of nickel be 45-x.
Hence,
0.10x + 0.05(45-x)=3.25
0.10x+2.25-0.05x=3.25
0.05x=3.25-2.25
0.05x=1
x= 1/0.05
x=20
45-x
45-20=25
Answer:
Step-by-step explanation:
---------------------------------
First step multiply your terms in your first expression just to the 1 in the second expression like so:
---------------------------------
Anything times 1 is that anything.
That is, .
Now we are going to take the top expression and multiply it to the -x in the second expression. . We are going to put this product right under our previous product.
---------------------------------
We still have one more multiplication but before we do that I'm going to put some 0 place holders in and get my like terms lined up for the later addition:
---------------------------------
Now for the last multiplication, we are going to take the top expression and multiply it to x^3 giving us . (I'm going to put this product underneath our other 2 products):
---------------------------------
I'm going to again insert some zero placeholders to help me line up my like terms for the addition.
---------------------------------
----------------------------------------------------Adding the three products!