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kotykmax [81]
3 years ago
14

/

22}=8" align="absmiddle" class="latex-formula"> find the answer
Mathematics
1 answer:
Hitman42 [59]3 years ago
8 0

Answer:

b = 149

Step-by-step explanation:

Given

\frac{27+b}{22} = 8

Multiply both sides by 22 to clear the fraction

27 + b = 176 ( subtract 27 from both sides )

b = 149

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80 cm to 42.5 cm for percent change
Fofino [41]

Answer:

= 46.875% decrease

Step-by-step explanation:

Mark as brainliest :)

5 0
3 years ago
Suppose you have 20 coins that total $3.00. Some coins are nickels and some are quarters. Which of the following pairs of equati
shusha [124]

Answer: D. n + q = 20

5n + 25q = 300

Step-by-step explanation:

Let n represent the number of nickels that you have.

Let q represent the number of quarters that you have.

Suppose you have 20 coins. It means that

n + q = 20

The total value of the coins is $3. The value of a quarter is $0.25 and the value if a nickel is $0.05. Therefore, the equation would be

0.05n + 0.25q = 3

Multiplying both sides of the equation by 100, it becomes

5n + 25q = 300

The correct option is

D. n + q = 20

5n + 25q = 300

6 0
3 years ago
Find the equation of the tangent to the circle x2 + y2 = 109 at point (-10,3)
konstantin123 [22]

Answer:

10x - 3y = -109 .

Step-by-step explanation:

x^2 + y^2 = 109

Implicit Differentiation:

2x + 2y.y' = 0

y' = -2x/2y = -x/y

So at the point (-10,3) the gradient of the tangent is -(-10)/3 = 10/3.

Equation of the tangent:

y - y1 = m(x - x1)

y - 3 = 10/3(x + 10)

y - 3 = 10/3 x + 100/3

3y - 9 = 10x + 100

-109 + 3y = 10x

10x - 3y = -109  

4 0
2 years ago
You can use this graph to convert between
nika2105 [10]

Answer:

A. 48 Km.

B. 62.5 miles.

Step-by-step explanation:

From the diagram given above, the following data were obtained:

50 miles = 80 Km

A. Converting 30 miles to kilometres.

50 miles = 80 Km

Therefore,

30 miles = 30 miles × 80 Km / 50 miles

30 miles = 48 Km

Thus, 30 miles is equivalent to 48 Km.

B. Converting 100 km to miles.

80 Km = 50 miles

Therefore,

100 Km = 100 Km × 50 miles / 80 Km

100 Km = 62.5 miles

Thus, 100 Km is equivalent to 62.5 miles.

6 0
2 years ago
In a car lot,4/12 of the cars are white and 3/12 of the cars are blue.What is the fraction of the cars in the lot are either whi
GalinKa [24]
7/12 because 4/12 + 3/12 equals 7/12
8 0
3 years ago
Read 2 more answers
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