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3 years ago

Use the distributive property to write an equivalent expression 4(5+19)=

Mathematics

2 answers:

Effectus [21]3 years ago

7 0

Answer:

Step-by-step explanation:

4 ( 5 + 19 )

= 4 * 5 + 4 * 19

= 20 + 76

= 96

Inessa05 [86]3 years ago

6 0

Answer:

4(5+19)= 96

Step-by-step explanation:

4*5 = 20

4 * 19 = 76

20 + 76 = 96

Have a good day :)

4 (19 + 5) = 96

2 * 2 (19 + 5) = 4(19 +5) = 96

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How to solve linear equations

Harman [31]

There are many methods to solve linear equations, such as:

1. Equating method: Let's take two simultaneous linear equations x+y=5 and x-y=1.

x+ y=5 can be written as x = 5-y.........(1)

In the same way,

x-y=1 or, x = 1+y.............(2)

Here, we equate the two equations and get the value of unknowns.

2. Substituting method: Again, take the equations x+y=5 and x-y=1.

x+y=5

or, x=5-y.........(1)

x-y=1............(2)

Substituting equation (1) in (2),

(5-y) - y=1

or, 5-2 y = 1

or, y = 2.

This is called substitution method.

3. Formula method: simultaneous linear equations can also be solved by formula.

If there are two equations: ax+by +c=0 and d x+e y+f=0 then the solution of such equation would be:

x = (bf - e c)/( a e - db), y = (a f-dc)/(db - a e).

For example,

2 x+ 3 y = 10 or, 2 x +3 y-10=0..................(1)

x+y=-44 or, x+y+44=0..................(2)

Comparing equation (1) and (2) with ax+by+c = 0 and dx+ey+f=0, a=2, b=3, c=-10, d =1, e=1, f=44.

Using formula,

x= -142 and y = 98.

4. Graphical method

5. Elimination method

6. Matrix method

8 0

4 years ago

Adele and her best friend, Valentina, want to rent a canoe to explore the lake by their campsite. The Boat Bunker charges $27 fo

LiRa [457]

Answer:

Oar City

Step-by-step explanation:

Divide the first expense (27) by the time you ride (3 hours) and you get 9 dollars an hour

Divide the second expense (45) by the time you ride (9 hours) and you get 5 dollars an hour

6 0

3 years ago

The area of a rectangle is x^2-4/2x in.^2 and its length is (x+2)^2/2 in. What is the width in inches?

Over [174]

Is b I’m sure check

3 0

3 years ago

Elenas anut bought her a 150$ saving bond when she was born. When elena is 18 years old, the bond will have earned a 106% in int

SpyIntel [72]

Answer:

The Amount after 18 years is $66,942,391.5

Step-by-step explanation:

Given as :

The principal invested in saving bond = p = $150

The Time period for the bond = t = 18 years

The rate of interest applied on bond = 106%

Let The Amount after 18 years = $A

<u>Now, From compound interest</u>

Amount = Principal × $(1+\dfrac{\textrm rate}{100})^{\textrm time}$

Or, A = p × $(1+\dfrac{\textrm r}{100})^{\textrm t}$

Or, A = $150 × $(1+\dfrac{\textrm 106}{100})^{\textrm 18}$

Or, A = $150 × $(2.06)^{\textrm 18}$

Or, A = $150 × 446,282.61

∴ A = $66,942,391.5

So,The Amount after 18 years = A = $66,942,391.5

Hence,The Amount after 18 years is $66,942,391.5 Answer

7 0

3 years ago

The mad hatter buys his tea in bulk from the local store. A case of 100 tea Bags costs 15 gold coins

seropon [69]

Answer:

so 15 gold coins if he buys a case

Step-by-step explanation:

6 0

4 years ago

Read 2 more answers