David's age: x
Joshua: x + 5
Simon: (x+5) + 4 or x + 9
Simon's age + David's age = 15
(x+9) + (x) = 15
2x = 15 - 9
2x/2 = 6/2
x = 3
The ages of the boys:
David: x = 3 years old
Joshua: 3+5 = 8 years old
Simon: 3+9 = 12 years old
Read more on Brainly.ph - https://brainly.ph/question/1602102#readmore
Answer:
Read below for each answer! (^-^)
Step-by-step explanation:
1: You got the first one right. The explanation does explain why but think about 0 as the surface of the water to better understand.
2: -3; it is between 2 and 4 with only one line through it meaning that it is -3.
3: 7. That's the greatest number both can divide into it.
4: The last one. Any positive number is greater than a negative one and peanut butter's freezing point is positive while the other one's is not.
5: You got it right again! -(-1) has two negatives. Two negatives (mostly) make a positive. So positive 1! Now describe that on a number line.
Hope this helps!
Answer
Add the expressions.
1400
Step-by-step explanation:
Have a nice day
A(-5,5)
B(4,5)
C(2,0)
D(-5,-2)
AB,BC,CD,DA
AB = [4-(-5)),5-5]=[9,0]
Lenght
![AB= \sqrt{9^2+0^2}= \sqrt{81} =9](https://tex.z-dn.net/?f=AB%3D%20%5Csqrt%7B9%5E2%2B0%5E2%7D%3D%20%5Csqrt%7B81%7D%20%20%3D9)
BC = [2-4,0-5]=[-2,-5]
Lenght
![BC=\sqrt{(-2)^2+(-5)^2}=\sqrt{4+25}=\sqrt{29}](https://tex.z-dn.net/?f=BC%3D%5Csqrt%7B%28-2%29%5E2%2B%28-5%29%5E2%7D%3D%5Csqrt%7B4%2B25%7D%3D%5Csqrt%7B29%7D)
CD = [-5-2,-2-0]=[-7,-2]
Lenght
![CD=\sqrt{(-7)^2+(-2)^2}=\sqrt{49+4}=\sqrt{53}](https://tex.z-dn.net/?f=CD%3D%5Csqrt%7B%28-7%29%5E2%2B%28-2%29%5E2%7D%3D%5Csqrt%7B49%2B4%7D%3D%5Csqrt%7B53%7D)
DA =[-5-(-5),-2-5]=[0,-7]
Lenght
![DA=\sqrt{0^2+(-7)^2}=\sqrt{49}=7](https://tex.z-dn.net/?f=DA%3D%5Csqrt%7B0%5E2%2B%28-7%29%5E2%7D%3D%5Csqrt%7B49%7D%3D7)
sorted from longest to shortest:
AB, CD,DA,BC
Answer:
Clusters at 1 - 2 1/2 and 3 1/2 - 4
Gaps at 1/2 and 3
Spread from 0 - 4
Peak at 4
Graph is not symmetrical.
Explanation:
The clusters are where the data is grouped <em>without </em>gaps. So from 1 - 2 1/2 and 3 1/2 to 4. There are no gaps. Gaps are spaces <em>without</em> data. These spaces have to be within the spread of the data. The spaces without data within the spread are 1/2 and 3. The spread is the smallest data point to the largest one. The peak is the data point with the most dots. The place with the most dots is 4. A symmetrical graph has a center point that everything revolves around and everything is the same on both sides. There is no symmetry in this graph.