3 years ago

Where does –2 ¾ go on this number line?

1 answer:

7 0

First you need to find 0 on the number line since you dont have one marked im going to mark one. Once we mark it the it should be easier. Then we have our answer

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Among 35 students in a class, 20 of them earned A's on the midterm exam, 13 earned A's on the nal exam, and 12 did not earn A's

enyata [817]

Answer:

The correct answer is " $\frac{2}{7}$ ".

Step-by-step explanation:

According to the question,

Number of students,

= 35

A ! mid term A,

$n(A) = 20$

B : final A,

$n(B) = 13$

Didn't start,

$n(A^c \cap B^c) = 12$

Now,

⇒ $n(A \cup B)=35-12$

$=23$

then,

⇒ $n(A \cup B)=20+13-23$

$=10$

hence,

The probability will be:

⇒ $P(A \cap B)=\frac{10}{35}$

⇒ $=\frac{2}{7}$

7 0

3 years ago

Determine if x = 1 is the solution to this linear equation. 3x - 6(5x + 5) = 9x + 6 Is x = 1 the solution? No. When 1 is substit

FromTheMoon [43]

Answer: No. When 1 is substituted for the variable, the result is a false statement

Step-by-step explanation:

3x - 6(5x + 5) = 9x + 6

3x - 30x - 30 = 9x + 6

-27x -30 = 9x +6

-27x - 9x = 30 +6

-36x = 36

x = -1.

Substitute with x = -1 :

-3 - 6(-5 + 5) = -9 +6

-3 -30 + 30 = -3

-3 = -3

Therefore, the correct option is:

No. When 1 is substituted for the variable, the result is a false statement

7 0

4 years ago

1.64*10^0/2.0*10^2 in scientific notation

jarptica [38.1K]

1.64*10^0/2.0*10^2 in scientific notation

 $1.64 * 10^0 : 2.0 * 10^2= (1.64:2.0) * 10^0:10^2= 0.82 * 10 ^{0-2} = \\ \\ 0.82 * 10 ^{-2} =0.82 * \frac{1}{10^2} =0.82 * \frac{1}{100} =0.0082= \boxed{ 8.2 * 10^{-3} }$

5 0

4 years ago

2x + 4 = 3x - 2 a. -2 b. 7 c. 3 d. 6

blsea [12.9K]

The answer is 6.

2x + 4 = 3x - 2
-2x -2x
————————
4 = x - 2
+2 +2
—————
6 = x

7 0

4 years ago

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In the figure above, lines k, l, and m intersect at a point. If x + y = u + w , which of the following must be true?

wariber [46]

D is the right answer

4 0

3 years ago

Read 2 more answers