Make an equation system based on the problem
eg. a is the first number and b is the seond number
An equation for "<span>The sum of two numbers is 53" is
</span>⇒ a + b = 53
An equation for "<span>twice the first number minus three times the second number is 26"
</span>⇒ 2a - 3b = 26
<span>
Solve the equations by elimination and subtitution method
Eliminate a to find the value of b
a + b = 53 (multiplied by 2)
2a - 3b = 26
--------------------------------------
2a + 2b = 106
2a - 3b = 26
------------------- - (substract)
5b = 80
b = 80/5
b = 16
Subtitute the value of b to one of the equations
a + b = 53
a + 16 = 53
a = 53 - 16
a = 37
The numbers are 16 and 37</span>
Answer:
20.48
The parentheses just means multiplication.
Answer:
It’s a bar graph because those orange rectangles show the data
Answer:
51, 52 and 53
Step-by-step explanation:
Let the numbers be x, x+1 and x+2
x+x+1+x+2=156
3x+3=156
subtract 3 from both sides
3x=156-3
3x=153
divide both sides by 3
x=156/3
x=51
x+1=52
x+2=53
Hence, the integers are 51, 52 and 53.
Answer:
A
Step-by-step explanation:
Write the nunber in scientific notation which we need to add -1 to 10 power to made it 3.07.
