2 Sqrt5 + 3 sqrt8 equals ?

Answers

Answer 1

Answer: 2 * Sqrt 5 = 4.4
Sqrt 5 = 2.2
3* Sqrt 8 = 8.4
Sqrt 8 = 2.8
8.4 + 4.4 = 12.8

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Add. Write your answer in simplest form.

4 6/7 + 3 5/7=____

Answers

First add the fractions.

6/7 + 5/7 = 1 4/7

Then add the whole numbers

4 + 3 = 7

Then add the mixed number to the whole number

7 + 1 4/7 = 8 4/7

Your answer is 8 4/7

Answer:

8 4/7

Step-by-step explanation:

What does √(19 - 3) to the power of two mean

Answers

Answer:

It is 19 - 3 = 16 because the exponent of 2 cancels out the square root.

Step-by-step explanation:

Which expressions are equivalent to the expression −6x + 8? Select all that apply. 1. −2(3x + 4) 2. 2(−3x + 4) 3. 5(x + 1) − 11x + 3 4. x + 2 − 7x + 6 5. 8 − 6x

Answers

1)
-2(3x+4)=-6x-8≠-6x+8

2)
2(-3x+4)=-6x+8

3)
5(x+1)-11x+3=5x+5-11x+3=-6x+8

4)
x+2-7x+6=-6x+8

5)
8-6x=-6x+8

Answer: The expressions 2,3,4 and 5 are equivalents.

A banana bread recipe calls for 3/4 cup butter. One tablespoon equals 1/16 cup. How many tablespoons of butter are needed to make the banana bread?

Answers

Answer:

Banana recipe will require 12 table spoons of butter.

Step-by-step explanation:

Banana bread recipe requires the butter = $(3)/(4)$ cups

Since $(1)/(6)$ cup = 1 table spoon

Therefore, 1 cup = $(1)/((1)/(16))$ = 16 table spoons

Therefore, $(3)/(4)$ cup of butter = $(3)/(4)* 16$

= 12 table spoons of butter

So Banana recipe will require 12 table spoons of butter.

3/4 of a cup is the same as 12/16 of a cup. if one tablespoon is 1/16 of a cup, then 12 tablespoons of butter are required

A certain radioactive isotope has a half-life of 15 days. If one is to make a table showing the half-life decay of a sample of this isotope from 32 grams to 1 gram; list the time (in days, starting with t = 0) in the first column and the mass remaining (in grams) in the second column, which type of sequence is used in the first column and which type of sequence is used in the second column?

Answers

A half-life of the isotope is 15 days and at start its mass is 32 g.
A table:
t: m:
0 32 g
15 16 g
30 8 g
45 4 g
60 2 g
75 1 g
In the first column is used an arithmetic sequence ( a 1 = 0, d = 15 ).
In the second column is used a geometric sequence ( a 1 = 32, r = 1/2 )

The slope of the line whose equation is 5 x - 3 y = 4 is
5/3
4/5
-3/5

Answers

The slope-intercept form: y = mx + b

m - slope

b - y-intercept

We have:

$5x-3y=4\qquad|\text{subtract 5x from both sides}\n\n-3y=-5x+4\qquad|\text{divide both sides by (-3)}\n\ny=(5)/(3)x-(4)/(3)$

Answer: 5/3

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Factorization of 1260

Decrease 1280 by 67%