In mathematics, a rational number is a number that can be expressed as the quotient or fraction p/q of two integers, a numerator p and a non-zero denominator q. Since q may be equal to 1, every integer is a rational number.
A1=12, a2=27, a3=42, etc. The pattern is that you’re always adding 15 after starting with 12. So the general rule is...
an=12+15(n-1)
So then...
a18=12+15(18-1)
a18=12+15(17)
a18=267
Answer:
n = m r - r t
Step-by-step explanation:
Solve for n:
m = n/r + t
Hint: | Reverse the equality in m = n/r + t in order to isolate n to the left hand side.
m = n/r + t is equivalent to n/r + t = m:
n/r + t = m
Hint: | Isolate terms with n to the left hand side.
Subtract t from both sides:
n/r = -t + m
Hint: | Solve for n.
Multiply both sides by r:
Answer: n = m r - r t
Children will use the Make a Ten strategy in this lesson, along with
other strategies. Remind children that if they are adding two numbers
such as 8 + 5, they can regroup the numbers to make adding easier. Tell
children that they can take 2 from the 5 and add the 2 to 8 to make a
ten. Also remind them that they must remember to subtract the 2 from the
5, leaving a 3, so they add 10 and 3 and get 13. Tell children that
they will use this strategy to add two-digit numbers.
Materials: overhead projector, ten-frames and
counters, tens and ones workmat, bundles of 10 craft sticks and single
sticks, large number line, and large hundred chart
Preparation: Prepare a tens and ones workmat and a
ten frame for use on the overhead. Make 9 bundles of craft sticks, 10
per bundle, using rubber bands to hold them together. Or use tens and
ones blocks. Make a large number line and hundred chart for the
classroom.
Prerequisite Skills and Concepts: Children should know the addition facts to 20 and the strategies used in learning them.
Answer:
Step-by-step explanation:
1.95 is the correct answer