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Natalka [10]
4 years ago
10

2b - 25 + 5b = 7 - 32

Mathematics
1 answer:
Arlecino [84]4 years ago
4 0

Answer:

b = 0

Step-by-step explanation:

2b - 25 + 5b = 7 - 32 \\ 7b - 25 = 7 - 32 \\ 7b = 7 - 32 + 25 \\ 7b =  - 25 + 25 \\ 7b = 0 \\  \frac{7b}{7}  =  \frac{0}{7}  \\ b = 0

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Which has the greater mass a 1 kilogram brick or a 1 kilogram bag of leaves
sladkih [1.3K]
They are the same bc they have the same masses (1 kilogram)
5 0
4 years ago
Give two coterminal angles (one positive and one negative) and the reference angle -4 pi/5
kherson [118]

The coterminal angle for the -4π/5  are -14π/5 , 6π/5 and reference angle is π/5 respectively.

<h3>What is coterminal angles?</h3>

Two different angles that have the identical starting and ending edges termed coterminal angles however, since one angle measured clockwise and the other determined counterclockwise, the angles' terminal sides have completed distinct entire rotations.

We have an angle:

-4π/5

To find the coterminal angle, add and subtract by 2π in the angle -4π/5

Coterminal angle:

= -4π/5 - 2π

= -14π/5

= -4π/5 + 2π

= 6π/5

Reference angle:

= π - 4π/5  (as the angle lies in the second quadrant)

= π/5

Thus, the coterminal angle for the -4π/5  are -14π/5 , 6π/5 and reference angle is π/5 respectively.

Learn more about the coterminal angles here:

brainly.com/question/23093580

#SPJ1

6 0
2 years ago
Derrick has a Golden Eagle coin in his coin collection that weighs 13.551 grams. He has another Golden Eagle coin that weighs 13
Maru [420]
When subtracting the two, the difference is 0.163 grams
6 0
3 years ago
There are 25 coins inside a container. Some of the coins are nickels, and the rest are quarters. The value of the coins is $4.05
dem82 [27]

Answer:

  • n + q = 25
  • 0.05n + 0.25q = 4.05

Step-by-step explanation:

<em>Two equations</em> are required to represent this problem as posed.

1. An equation for the number of coins:

  n + q = 25

2. An equation for the value of the coins:

  0.05n + 0.25q = 4.05

4 0
3 years ago
1 ) Old Navy is offering a 20 % discount on all sweaters. If the regular price of a sweater is $45,what is the sale price?​
deff fn [24]

Answer:

Sale Price = $36

Step-by-step explanation:

To find the sale price, you need to find what 10% of the original price is. 10% of $45 is $4.50. Now we need to find what 20% is, 20% is double 10% so we multiply the answer we got by 2. This equals to $9. The question is asking for the sale price, to find it you have to subtract $9 (the discount) from $45 (regular price). The answer you should get is $36.

Equation:
$45 ÷ 10 = $4.50
$4.50 × 2 = $9
$45 - $9 = $36

7 0
3 years ago
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