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3 years ago

Equivalent expression for 4(a+5) by modeling and using distributive property

Mathematics

2 answers:

Harlamova29_29 [7]3 years ago

5 0

Answer:

Step-by-step explanation:

to use distributive property

you have to put the 4 inside the paranthese and multiply

4a+20 is your answer

pls mark me brainliest

MakcuM [25]3 years ago

3 0

Answer:

The answer is 4a+20

Step-by-step explanation:

This is because when you are using the distributive property, the number outside the parentheses has to multiply the two 2 numbers inside.

So 4*a=4a

and 5*4=20

Now all that is left is addition sign inside. All you have to do now is to combine the 2 terms which makes it 4a+20.

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Find | P | a. 15 b. 22 c. 24 d. 8

ankoles [38]

Answer:

c. 24

Step-by-step explanation:

15+9=24

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3 years ago

What is the y-coordinate of the solution for the system of equations? x−y=−11 y+7=−2x

ICE Princess25 [194]

Answer:

$y= 5$

Step-by-step explanation:

Given the system of equations:

$x-y=-11$

$y+7=-2x$

In order to find the y coordinate of the solution we must first find the solution to this system of equations. We first start by solving one of the given equations and then substitute the answer of that into the second equation and further solve to get the final answers.

$x=y=-11$

$y+7=-2x$

$+ -7$

$y = -2x - 7$

$x - y = -11$

$y = -2x-7$

$x-(-2x-7)=-11$

$x--2x=x+2x=3x$

$3x+7=-11$

$-7$

$-11+-7=-18$

$3x=-18$

$\div3$

$-18\div3=-6$

$x=-6$

$y=-2x-7$

$y=(-2)(-6)-7$

$-2\times-6=12-7=5$

$y=5$

Hope this helps.

7 0

2 years ago

11.Write the equations of linear and exponential functions that pass through the points (0,9) and (1,3)

Schach [20]

9514 1404 393

Answer:

y = -6x +9

y = 9·(1/3)^x

Step-by-step explanation:

In each case, the y-intercept is 9.

Linear

The slope is rise/run = (3-9)/(1-0) = -6, so the equation is ...

y = mx + b . . . . . . . slope m, intercept b

y = -6x +9

Exponential

The ratio of value at x=1 to that at x=0 is 3/9 = 1/3. That is the "growth factor," so the equation is ...

y = 9·(1/3)^x

7 0

3 years ago

If you have 36 coins. Some are quarters and some are nickels. The total is $4.80. How many quarters and nickels are there?

sergiy2304 [10]

15 quarters= $3.75
21 nickels =$1.05
______________
36 coins = $4.80

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3 years ago

AD¯¯¯¯¯ , BD¯¯¯¯¯ , and CD¯¯¯¯¯ are angle bisectors of the sides of △ABC . BE=12 m and BD=20 m

evablogger [386]

Since triangle BDE is right, we can check it for special rules: BD is hypotenuse = 20, and BE = 12, both divisible by 4: get 5 and 3... so it's a 3-4-5 special right triangle, the 4×4 = 16 m for side DE.
Since AD bisects angle A, I think then side DG should be congruent with DG. So then
DG = 16 m

5 0

3 years ago