Answer:
1. 37.5
2. 8
Step-by-step explanation:
1. the smaller triangle and the bigger triangle are similar, so the sides are also similar.
this means that 16/46 = 20/(x+20)
then, just solve that for x
16/46 = 20/(x+20)
divide both sides by 4
4/46 = 5/(x+20)
multiply both sides by (x + 20)
(x+20) * 4/46 = 5
multiply both sides by 46
4x + 80 = 230
subtract 80
4x = 150
divide 4
x = 37.5
2. do the same thing ( still similar triangles)
the equation would be (3x + 1)/10 = (7x - 1)/22
solve
22(3x + 1) = 10(7x - 1)
66x + 22 = 70x - 10
32 = 4x
x = 8
X ^ 2 - 9
= x ^ 2 - 3 ^ 2
It turns into 3 ^ 2
Because 3 ^ 2 = 9
The final answer is
= ( x + 3 )( x - 3 )
remember the formula :
a^2 - b^2 =(a+b)(a-b)
Answer:
I’m not good at algebra but I think that qx = -4 and qy = -7? I tried I’m not good at algebra.
Step-by-step explanation:
qy= -7 plus px= 3 equals -4
im not good at algebra
This is easy the answers 55 you just need to divide
165 ÷ 3 = ?
Step 1: Look at the multiplications of three can you make a group with an answer close to one? if not look at 16 and the multiplications of three is there a number close to 16 or exact?
Step 2: In this case 5 × 3 = 15, so 15 is close to 16.
Step 3: Now you need to subtract 16 and 15, 16 - 15 = 1.
Step 4: Like there's no number that has 1 as a answer, you need to lower the 5.
Step 5: Once you lower the five it makes 15 in the in the multiplications of three is there something close to 15 or exact? Yes there is a number that can make 15, it's 5 × 3 so 15 take away 15 makes zero so your answer will be simple, 55.
So Luke's dad needs to save $55 each week.
(sorry if their is spelling errors)
