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mars1129 [50]
3 years ago
9

(7(19 - 9))/(4 * 5 * 18)

Mathematics
2 answers:
UNO [17]3 years ago
7 0

Answer: 0.194

Step-by-step explanation:

First step is to open the brackets.

7(19 - 9))/(4 * 5 * 18) = (133 - 63)/360

= 70 / 360

= 0.194

GrogVix [38]3 years ago
4 0

The value of (7(19-9)) /(4 \times 5 \times 18) is 0.194

<u>Solution:</u>

Given that expression is (7(19 - 9))/(4 \times 5 \times 18)

To solve easily, we can first evaluate numerator and denominator

<em><u>Lets first solve the numerator part:</u></em>

(7(19-9))=(7 \times(10))=70

<em><u>Now lets solve denominator part:</u></em>

(4 \times 5 \times 18)=(20 \times 18)=360

Now lets solve the entire expression,

=(7(19-9)) /(4 \times 5 \times 18)=\frac{70}{360}=0.194

Hence the value of (7(19-9)) /(4 \times 5 \times 18) is 0.194

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after eating 25 percent of the pretzels, Sonya had 42 left. how many pretzel did Sonya have originally? ​
Shtirlitz [24]

Answer:

56

Step-by-step explanation:

she ate 25% so she is left with 75%

you want to find that 25% so you do 75÷25=3

42÷3=14

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7 0
3 years ago
A pool measuring 8 meters by 26 meters is surrounded by a path of uniform​ width, as shown in the figure. If the area of the poo
Ainat [17]
Let the width path be x.
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Width of the outer rectangle = 8 +2x.

Combined Area = (2x + 26)*(2x + 8) = 1008

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4x² + 16x + 52x + 208 = 1008

4x² + 68x + 208 - 1008 = 0
4x² + 68x - 800 = 0.          Divide through by 4.
x²  + 17x - 200 = 0 . This is a quadratic equation.

Multiply first and last coefficients:  1*-200 = -200

We look for two numbers that multiply to give -200, and add to give +17

Those two numbers are 25 and -8.

Check:   25*-8 = -200         25 + -8 = 17

We replace the middle term of +17x in the quadratic expression with 25x -8x


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x² + 25x - 8x - 200 = 0     

x(x + 25) - 8(x + 25) = 0

(x+25)(x -8) = 0

x + 25 = 0    or   x - 8 = 0

x = 0 -25              x = 0 + 8

x = -25                    x = 8

The width of the path can not be negative.

The only valid solution is x = 8.

The width of the path is 8 meters.
8 0
3 years ago
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ArbitrLikvidat [17]

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4 0
3 years ago
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Alenkinab [10]
<h2>Answer:</h2>

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<h2>Step by step solution:</h2>

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and this is not a function because there are elements in the set of inputs that match with two elements in the set of outputs.

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Answer:

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Step-by-step explanation:

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8 0
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