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Doss [256]
3 years ago
12

4/9x+1/5x=87 what is x

Mathematics
2 answers:
Natali5045456 [20]3 years ago
5 0
First you need to find a common denominator.

20/45x + 9/45x = 87

Combine like terms.

29/ 45x = 87

Multiply both sides by 45/29

x = 3,915 / 29

x = 135

Hope this helps!
IceJOKER [234]3 years ago
3 0

Answer:

The value of x is 135.

Step-by-step explanation:

Given : Expression \frac{4}{9}x+\frac{1}{5}x=87

To find : What is the value of x?

Solution :

Expression \frac{4}{9}x+\frac{1}{5}x=87

Take LCM,

\frac{4x\times 5+x\times 9}{9\times 5}=87

\frac{20x+9x}{45}=87

\frac{29x}{45}=87

x=\frac{87\times 45}{29}

x=135

Therefore, The value of x is 135.

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Evaluate -5x^2 − 8x + 1 when x = -3.
Yakvenalex [24]

Hello.

Answer: 70

New equation: −5(−3^2)−(8)(−3)+1


How to get the answer:

(−5)(−9)−(8)(−3)+1

=45−(8)(−3)+1

=45−(−24)+1

=69+1

=70


Have  a nice day

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3 years ago
A spherical water tank with a radius of 21 ft is being filled at a rate of 150 ft3 per hour. How much time must elapse for the w
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Find the mean, median, mode, and standard
Veronika [31]

Answer:

Step-by-step explanation:

mean = sum of data / no of data

20 + 58 + 74 + 77 + 77 + 85 + 86 + 90 + 95 + 98 / 10

760 / 10

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to find median u should arrange the data from ascending to descending order.

since the given data is already arranged u dont need to change.

median = (N + 1)/2     (N means no of data)

=10 + 1 / 2

=11 / 2

=5.5

= 5 th term + 6 th term /2

=77 + 85 /2

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mode means most repeating number . so in this given data 77 is repeated two times while others occured just one times . so the mode of the given data is 77.

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Zachary rides his bike 6 miles in 2 hours. If he rides at a constant speed, select the answers below that are equivalent ratios
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The ratios that are equivalent are A, C and D
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