Before we do this problem, let's go over a little algebra terminology.
The number in front of your variable is called your coefficient and notice that the x at the end of the problem does not have a coefficient.
When that happens, when there is no number in front of your variable, you can put a 1 there to fill that position. So -x can be thought of as -1x.
Next let's change all our minus signs to plus negatives.
So the problem reads 3x + 5 + 7x + -3 + -1x + 2.
Now let's simplify this by combining like terms.
We can combine our "x" terms first.
3x + 7x + -1x simplifies to +9x.
Now, 5 + -3 + 2 simplifies to 4.
So our answer is 9x + 4.
Answer:
10x-x+7-3
Step-by-step explanation:
Find the difference: 4/5 - 1/3
Answer:
7/15
Step-by-step explanation:
When we convert the fractions so that they have a common denominator (this makes it easier to subtract), we get 12/15 - 5/15 = 7/15. Hope this helps!
Answer:
7/15
Step-by-step explanation:
First, you find a common denominator. The common denominator would be 15.
4/5= 12/15
1/3= 5/15
12/15- 5/15
Answer: 7/15
There are 13 brunettes and 7 blondes in a Spanish class. The teacher selects two students to run an errand. How many possible outcomes are there if she selects a brunette followed by a blonde?
Answer:
91 possible outcomes
Step-by-step explanation:
As the teacher selects a brunette followed by a blonde, we just need to find the number of possibilities of choosing a brunnette and the number of possibilities of choosing a blonde:
number of possibilities of choosing a brunette: 13
number of possibilities of choosing a blonde: 7
Then, the number of possible outcomes is the product of these number of possibilities:
13 * 7 = 91 possible outcomes
Which is a symmetric distribution?
Answer:
most definitely d!!
Step-by-step explanation:
just took the test on a p e x
A grapefruit is 8% heavier than an orange, and an apple is 10% lighter than the orange.
By what percentage is the grapefruit heavier than the apple?
Answer:
20% heavier
Step-by-step explanation:
Someone please help me out.
Answer:
a=6
b=-14
Step-by-step explanation:
If a coin is flipped twenty-five times and lands tails up seventeen times, the
___ probability that the coin lands tails up is .
Answer:
17/25 and theoretical
Step-by-step explanation:
Answer:
8
Step-by-step explanation:17-25=8 and 17+8=25
Pure acid is to be added to a 5% acid solution to obtain 95L of 98% solution. What amounts of each should be used?
How many liters of 100% pure acid should be used to make the solution?
Answer:
Step-by-step explanation:
Equation:
acid + acid = acid
0.05x + 1.0(95-x) = 0.30*95
----
Multiply thr by 100 to get:
5x + 100*95 - 100x = 30*95
---
-95x = -70*95
---
x = 70L (amt of 5% solution needed)
---
95-x = 25L (amt of 100% solution needed)
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How many Liters of 100% acid should be used to obtain the solution?
Help Please! And THANK YOU!
Answer:
[tex]100[/tex]
Step-by-step explanation:
[tex] \frac{3.75 \times 100}{1.50 \times 100} = \frac{375}{150} [/tex]
so the dividend and divisor were both multiplied by 100.The diagram shows the number of children who have ever used motorized scooters, manual scooters, and/or bicycles. Circles labeled Motor and Manual overlap. A circle labeled bicycle is to the side of the other 2 circles. Circle Motor contains 8 and circle Manual contains 32. The overlap of the circles contains 24. Circle Bicycle contains 44. Number 3 is on the outside of the circles. Which combination represents the empty set? motor ⋃ manual motor ⋃ bicycle motor ∩ manual motor ∩ bicycle
Answer:
motor ∩ bicycle
Step-by-step explanation:
This is because ∩ means intersection, saying that it is an overlap between the motor and the bicycle, but on the chart there is no overlap between those two.
Answer:
C: motor ∩ bicycle
Step-by-step explanation:
edge 2020
solve this inequality 5 x + 2 < 32
Answer:
Here is your answer:
5x + 2 < 32
solution:
5x+ 2 < 32
or, 5x < 32-2
or, 5x < 30
or, 5x < 30/2
or, 5x < 15
or, x < 15/3
or, x < 5
therefore, x < 5 ans
Hope it will help you
Which relation is a function?
A) y2 = 5 + 5x
B) 1/y = y - x
C) x2 = (1 - x)/y
D) x2 = (1 - x)/y2
Answer:
B
Step-by-step explanation: