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DiKsa [7]
3 years ago
10

The drama club can wash 9 cars in 40 minutes.  At this rate, how many cars can they wash in 2 hours? Caution: turn hours to minu

tes!
Mathematics
1 answer:
Natali [406]3 years ago
6 0

Answer:

l am pretty sure the answer is 27

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2. It takes 39,090 gallons of water to manufacture a new car. Sammy thinks that rounds up to about 40,000
Ainat [17]

Answer:

Susie rounded to the nearest thousandth.

Step-by-step explanation:

since the 100th place is 0 it would round down to 39,000 when you are rounding to the nearest thousand.

8 0
3 years ago
The side lengths of triangle ABC are 3, 4, and 5. Which set of ordered pairs form a triangle that is congruent to triangle ABC?
Ludmilka [50]
FORMULA:
AREA=     AC x h
        ----------------------
                    2
PERIMETER= AB+BC+CA

AREA   =   SQUAREROOT       
                  S(S-AB)(S-BC)(A-CA)


S= AB+BC+CA=   P
     -----------------   -----
               2             2


FOR THE COMPLETE SOLUTION PLEASE SEE THE PICTURE. THANKS.

6 0
3 years ago
Justin can read a textbook at a speed of 40 pages per hour. If he's reading a textbook chapter that has 125 pages, how long will
natali 33 [55]
     3,125
------------
 125   : 40
-120
-------
   250
  -240
  -------
     100
   -   80
  --------
      200
    - 200
      ------
          0
read a <span>Chapter books</span> in 3 1/8 hours
3 0
3 years ago
Read 2 more answers
Prove that |a| &lt; b if and only if -b &lt; a &lt; b
asambeis [7]

Answer:

Since,

|x|=\left\{\begin{matrix}x &\text{ if } x \geq 0 \\ -x &\text{ if } x < 0\end{matrix}\right.

Here, the given equation is,

|a| < b

Case 1 : if a ≥ 0,

|a| < b ⇒ a < b

Case 2 : If a < 0,

|a| < b ⇒ -a < b ⇒ a > - b

( Since, when we multiply both sides of inequality by negative number then the sign of inequality is reversed. )

|a| < b ⇒ a < b or a > - b ⇒ -b < a < b

Conversely,

If -b < a < b

⇒ a < b or a > - b

⇒ a < b or -a <  b

⇒ |a| < b

Hence, proved..

7 0
3 years ago
Given the system:
mina [271]

Answer:

X= -3

Y= 7

a= -6

b = -28

C = 9

D= -7

Step-by-step explanation:

2x – 4y = -34

-3x - y = 2

2x – 4y = -34

-12x - 4y = 8

-14x = 42

X= 42/-14

X= -3

-3x - y = 2

-3(-3) -y = 2

9-y = 2

9-2= y

Y= 7

a = 2x

a= 2*-3

a= -6

b = -4y

b = -4*7

b = -28

C= -3x

C= -3*-3

C = 9

D= -y

D= -7

6 0
3 years ago
Read 2 more answers
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