Already you can see that -y and y will make a zero
add both together
3x=21
x=7
plug x in
7+y=5
y=-2
Answer:
The annual interest rate was 5.25%.
Step-by-step explanation:
Simple interest can be calculated using the following formula: I = PRT, where I=simple interest, P=principal amount, R=percentage rate and T=time. In this problem, Mona started with a principal amount of $2840, or P=2840 and invested for 6 years, or T=6, to gain simple interest in the amount of $894.60, or I=894.60. When we put in the values for our variables in the equation, we get: 894.60 = (2840)(6)R. Multiplying 2840 x 6 = 17040 and gives us: 894.60 = 17040R. Using inverse operations to isolate the variable, we divide both sides by 17040 to get R=0.0525. Since the rate is a percentage, we need to multiply our answer by 100 to get 5.25%.
In the second step while distributing she made a mistake
It should have been
2x^2 -4x -6x +18 = 9x - 27
So answer should be
She did not use the distributive property correctly
From what I remember, hear is an example cuz idk how to really explain... there are 3 yellow cubes, 4 green, and 2 blue cubes all in one bag. You add the total number of cubes (3+4+2=9) let’s say I want to know what is the probability of grabbing a yellow cube. There is a total of 3 yellow cubes in the bag so just put that over 9 in a fraction (3/9) so that would be your fraction probability and if you want a percentage you just divide the numerator (3) by the denominator (9) which would be .33 so there is a 33% chance of grabbing a yellow cube. I’m so sorry if this didn’t help x-x
Answer:
12.04 feet
Step-by-step explanation:
Applying Pythagoras theorem,
c=
c=12.04
