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seraphim [82]
3 years ago
11

Solve for x. −68<8x−4<−36

Mathematics
2 answers:
Lelu [443]3 years ago
3 0

x equals negative 8 and negative 4


nikitadnepr [17]3 years ago
3 0

Answer:

-8 < x < -4

Step-by-step explanation:

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We have a jar of coins, all pennies and dimes. All together, we have 309 coins, and the total value of all coins in the jar is $
Vinvika [58]

There are 130 pennies in the jar

Step-by-step explanation:

We have a jar of coins

  • All coins are pennies and dimes
  • There are 309 coins in the jar
  • The total value of all coins in the jar is $ 19.2

We need to find the number of pennies in the jar

Assume that there are p pennies and d dimes in the jar

∵ There are p pennies and d dimes in the jar

∵ There are 309 coins in the jar

∵ All the coins in the jar are pennies and dimes

∴ p + d = 309 ⇒ (1)

∵ The total value of all coins in the jar is $ 19.2

∵ $1 = 100 cents

∴ $19.2 = 19.2 × 100 = 1920 cents

∵ 1 penny = 1 cent

∵ 1 dime = 10 cents

∴ p + 10 d = 1920 ⇒ (2)

Now we have system of equations, we can solve them to find p

∵ p + d = 309 ⇒ (1)

∵ p + 10 d = 1920 ⇒ (2)

- Multiply equation (1) by -10 to eliminate d

∵ (-10)(p) + (-10)(d) = (-10)(309)

∴ -10 p - 10 d = -3090 ⇒ (3)

Add equations (2) , (3)

∴ -9 p = -1170

- Divide both sides by -9

∴ p = 130

There are 130 pennies in the jar

Learn more:

You can learn more about the system of equations in brainly.com/question/3739260

#LearnwithBrainly

8 0
3 years ago
The electrician charges $50 per visit plus $12 per hour of work. Steve hires the electrician to do some work for his house. If S
TEA [102]

Answer:

12.5 hours

Step-by-step explanation:

budget: 200

fix cost: 50

hourly rate: 12

hours: ?

----

First we deduct the fix 50 dollars cost from the total budget.

Then we divide the remaining amount with the hourly rate

( 200 - 50 ) / 12 = ?

? = 12.5 hours

8 0
3 years ago
The distance from the tip of a slice of pizza to the crust is 7 inches.
Mice21 [21]

Answer:

radius

Step-by-step explanation:

4 0
1 year ago
What is 5 divided by 25
disa [49]

Answer:

0.2

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Look at the image please help I’m struggling
Monica [59]

Answer:

Step-by-step explanation:

rise over run

from the bottom to where the point is

From (0,0) to (4,3)

you rise 3 and run 4

So I think the Slope is 3/4

7 0
3 years ago
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