There were 30 days last month, and students attended class 70% of those days. How many days, d, did students attend class last month?
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A school bus has 25 seats, with 5 rows of 5 seats. 15 students from the first grade and 5 students from the second grade travel in the bus. How many ways can the students be seated if all of the second-grade students occupy the first row?a. 25P20 b. 5P5 × 20P15 c. 5C5 × 25C14 d. 5P5 × 15P15 e. 5P5 × 25C15
What is the arc measure of this circle?mCD=____ ?
A=2^3*3*5^2 B=2^3*5 Find the lcm of A and B
Answers
Answer:
the first option
Step-by-step explanation:
if you were to plot those points they make a straight horizontal line
Answer:
The first one.
Step-by-step explanation:
(x,y)
(-5,5)
(-4,5)
(-3,5)
(-2,5)
(-1,5)
y is the same for all the x's which will give you a horizontal line. Horizontal lines have a slope of 0.
a = 8, b = 15, c = ?
a = 24, b = ?, c = 26
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2: a= 24
3: c=17
4: b=10
Use a^2 + b^2 = c^2 to answer.
1: 12^2 (144) + b = 15^2 (225)
225-144 = 81
Square root 81 = 9
2: a + 49 = 625
625-49=576
Square root 576 = 24
3: 64 + 225 = 289
Square root 289 = 17
4: 576 + b = 676
676-576 = 100
Square root 100 = 10
Answers
The numbers are 40 and 22.
What is an expression?
An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
Let the numbers be m and n.
The two expressions are:
m + n = 62 ______(1)
m = 62 - n ______(2)
m - n = 18 ______(3)
From (2) and (3)
(62 - n) - n = 18
62 - n - n = 18
62 - 2n = 18
62 - 18 = 2n
n = 44/2
n = 22
Now,
m + n = 62
m = 62 - 22
m = 40
Thus,
m = 40 and n = 22.
Learn more about expressions here:
#SPJ3
x + y = 62 . . . . . . . (1)
x - y = 18 . . . . . . . .(2)
subtracting (2) from (1), we have:
2y = 44
y = 22
From (2), x + 22 = 62
x = 62 - 22 = 40
therefore, the two numbers are 40 and 22.
Answers
Answer:
Step-by-step explanation:
Given :
l + m + n = 9
l²+ m² + n²= 31
l + m + n = 9
On squaring both sides
(l + m + n)²= 9²
(l²+m²+n²+2(lm+mn+nl) = 81
31 +2(lm+mn+nl) = 81
2(lm+mn+nl) = 81 - 31
2(lm+mn+nl) = 50
(lm+mn+nl) = 50/2
(lm+mn+nl) = 25
Hence, the value of (lm+mn+nl) = 25
Answer:
YOU GOT GOOGLE
Step-by-step explanation:
GOOGLE!!
B. 2
C. 4
D.
Answers
Answer:
B. 2
Step-by-step explanation:
The number next to the variable is the coefficient. So, it is 2
Answer:
B
Step-by-step explanation:
2 is the coefficient and x is the variable.
Answers
For this case we can make use of the following rule of three:
42 -----------------------> 21%
x -------------------------> 100%
In this case we have the following variable
x: unknown number whose 21% is equal to 42-
From the rule of three we clear x.
We have then:
Answer:
42 is 21% of 200