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4 years ago

Y-5b Evaluate the expression when b= -3 and y=5

Mathematics

2 answers:

lianna [129]4 years ago

5 0

Answer: 20

Step-by-step explanation:

all you need to do is substitute the variables into the given expression, y-5b would turn into 5-5(-3) then you solve and you get 5-(-15) = 5+15 = 20, so youre answer is 20

USPshnik [31]4 years ago

5 0

Answer:75

Step-by-step explanation:Hey there! So we know what to substitute for the letters. Our new equation should look like this: 5(-5)(-3). By using PEMDAS, we should first multiply 5 by -5, which is -25. Our equation now should look like this: -25(-3). Since they are right next to each other, you have to multiply them. When you multiply two negative numbers, they turn out to be positive. Your answer should be positive 75

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An oblique cylinder has a radius of 9 centimeters and a volume of 486 cubic centimeters. Use Cavalieri’s Principle to calculate

kotegsom [21]

Using Cavalieri’s Principle, the height of the oblique cylinder with the given volume and base radius is 6cm.

Option A) is the correct answer.

<h3>What is the height of the oblique cylinder?</h3>

From Cavalieri's principle, the volume of an oblique cylinder is expressed as;

V = base area × h

V = πr² × h

Given that;

Radius r = 9cm
Volume of the oblique cylinder V = 486πcm³
Height of the oblique cylinder h = ?

V = πr² × h

486πcm³ = π × ( 9cm )² × h

486πcm³ = π × 81cm² × h

486πcm³ = 81πcm² × h

h = 486πcm³ / 81πcm²

h = 6cm

Using Cavalieri’s Principle, the height of the oblique cylinder with the given volume and base radius is 6cm.

Option A) is the correct answer.

Learn more on volume of cylinder here: brainly.com/question/16788902

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6 0

3 years ago

3/5 of a number decreased by one is 23. What is the number?

garri49 [273]

You can set up an equation based off of the information given:

x represents the unknown number

3/5x - 1 = 23

add 1 to both sides to isolate the 3/5x

3/5x = 24

divide both sides by 3/5 to solve for x

x = 120/3

120/3 can be simplified into 40

Final answer: x = 40

5 0

4 years ago

How to estimate 5 2/11- 3 2/18

Nimfa-mama [501]

Answer: The estimated value is: " 2.1 " .

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Step-by-step explanation:

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We are asked to "estimate" :

5 2/11 - 3/ 2/18 ;

Note: Consider: " 5 2/11 " ;

Note that: "2/11" is close to: "2/10" ; which can be expressed as a decimal value: "0.2 " ;

So, consider this value: "5 2/11 "; as estimated: " 5.2 " .

Now, consider: " 3 2/18 " ;

Note that : "2/18" can easily be reduced to: "1/9 ";

Since: "(2/18)" = "(2÷2) / (18÷2) " = "1/9 " ;

Note that "1/9" is close to "1/10" ; which can be expressed as a decimal value: "0.1 ".

So, consider: "3 2/18 " ; as estimated: " 3.1 " .

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So: To estimate: " 5 2/11 - 3 2/18 " ;

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Use the following: "5.2 - 3.1 " ;

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5.2

- 3. 1

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" 2.1 "

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The estimated value is: " 2.1 " .

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Hope this is helpful to you!

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8 0

3 years ago

Find the volume of the following

Alex_Xolod [135]

Answer: 3200

Step-by-step explanation:

4 0

3 years ago

having a blonde moment here lol. harvey is 3 times as old as jane. the sum of their ages is 48. find the age of each

GarryVolchara [31]

Answer: could be wrong but I believe that their age is 24. Hope it helps

Step-by-step explanation:

8 0

4 years ago

Read 2 more answers