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3 years ago

Evaluate 2a - b for a = 2 and b = 3.

2 answers:

7 0

If you would like to evaluate 2 * a - b for a = 2 and b = 3, you can do this using the following steps:

2 * a - b = 2 * 2 - 3 = 4 - 3 = 1

The correct result would be 1.

IgorC [24]3 years ago

7 0

(2)(2) - 3

= 1

1 is the answer

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(Look at the picture, please.)

AysviL [449]

Answer:

the answer is D : 1/2 :))))))

5 0

3 years ago

Read 2 more answers

Please help exspand the logarithm:

Nataly [62]

The first step for expanding this expression is to use the logarithmic product and the quotient rule.
㏒ $_{5}$ (2) + ㏒ $_{5}$ (x²) + ㏒ $_{5}$ (y)
Lastly,, use ㏒ $_{a}$ $( b^{x})$ = x × ㏒ $_{a}$ (b) to transform the expression.
㏒ $_{5}$ (2) + 2㏒ $_{5}$ (x) + ㏒ $_{5}$ (y)
This means that the expanded version of your expression is going to be ㏒ $_{5}$ (2) + 2㏒ $_{5}$ (x) + ㏒ $_{5}$ (y).
Let me know if you have any further questions.
:)

7 0

4 years ago

Si camilo tiene 6 años mas que juan, juan tiene 7 años menos que andrés y andrés tiene 35 años

lidiya [134]

Answer:

Part a) Camilo is 34 years old and Juan is 28 years old

Part b) The difference between Camilo's age and Juan's age is 6 years

Part c) The sum of the ages of Camilo and Juan not coincide with the age of Andres' grandmother

Step-by-step explanation:

The question in English is

If Camilo is 6 years older than Juan, Juan is 7 years younger than Andrés and Andrés is 35 years old .

Part a) How old is Camilo and how old is Juan? raises the equation.

Part b) What's the difference between Camilo's age and Juan's age?

Part c) If Andres's grandmother is 65 years old, does the sum of the ages of Camilo and Juan coincide with the age of Andres' grandmother?

Part a) How old is Camilo and how old is Juan? raises the equation.

Let

x -----> Camilo's age

y -----> Juan's age

z -----> Andres's age

we know that

$x=y+6$ -----> equation A

$y=z-7$ -----> equation B

$z=35$ -----> equation C

Find the value of y

substitute the value of z in the equation B

$y=35-7=28$

Find the value of x

substitute the value of y in the equation A

$x=28+6=34$

therefore

Camilo is 34 years old and Juan is 28 years old

Part b) What's the difference between Camilo's age and Juan's age?

Subtract Juan's age from Camilo's age

$x-y=34-28=6\ years$

Part c) If Andres's grandmother is 65 years old, does the sum of the ages of Camilo and Juan coincide with the age of Andres' grandmother?

Adds Camilo's age and Juan's age

$x+y=34+28=62\ years$

$62\ years\neq 65\ years$

therefore

The sum of the ages of Camilo and Juan not coincide with the age of Andres' grandmother

3 0

3 years ago

Can someone give me the answer to this

vredina [299]

You solve this problem via PEMDAS (Parentheses Exponents Multiplication Division Addition Subtraction.)

To start you simplify everything inside parentheses.

9+3*5+5^2

Then you simplify the exponents.

9+3*5+25

Next, you simplify the multiplication signs.

9+15+25

Then you simplify all the addition signs from left to right.

24+25

49

6 0

4 years ago

The volume of the above cylinder is 21m find the radius of the circular end

german

Answer:

0.75m

Step-by-step explanation:

The volume of a prism is:

the area of the cross section × length

In this case the cross section is the circle so the formula is

v = πr²h

volume = 21m³

height or length = 12m

Sub in the values:

21 = πr² × 12

1.75 = πr² (I divided both sides by 12)

0.5570423008 = r² (I divided both sides by π)

r = 0.74635... (I square rooted both sides)

r ≈ 0.75m (to 2 d.p)

4 0

3 years ago