Guys plz help me on questions 19 and 20 plz i have 5 mins left!!!

Mathematics

1 answer:

Nikitich [7]2 years ago

5 0

Answer:

19. y=-3x+5

20. y=1.75x+7

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5 of 10<br> What is the decimal multiplier to increase by 2.8%

Verdich [7]

Answer:

1.028

Step-by-step explanation:

The original amount is 100%

Add 2.8% to 100% = 102.8%

Now divide by 100 to find the decimal multiplier

102.8 ÷ 100 = 1.028

hope this helps :)

4 0

3 years ago

Simplify the expression

Dafna11 [192]

$\bf \left( \cfrac{2}{5m^5} \right)^{-4}\implies \left( \cfrac{5m^5}{2} \right)^{4}\implies \cfrac{5^4m^{5\cdot 4}}{2^4}\implies \cfrac{625m^{20}}{16}$

7 0

2 years ago

Read 2 more answers

I NEED HELP NOW I WILL DO ANYTHING

frosja888 [35]

The answer is C if its not tell me but if so give me 5 stars and send me a friend request.

4 0

3 years ago

Use the Binomial Theorem to expand each binomial (5x-4y)^3

jek_recluse [69]

You should know that:

(a+b)(a+b)(a+b)

=a(a+b)(a+b)+b(a+b)(a+b)

=a(a²+2ab+b²)+b(a²+2ab+b²)

=a³+2a²b+ab²+a²b+2ab²+b³

=a³+3a²b+3ab²+b³

-----------------

If a=5x and b=-4y

(5x+(-4y))³

=(5x-4y)³

=(5x)³+3(5x)²(-4y)+3(5x)(-4y)²+(-4y)³

=125x³+3(25x²)(-4y)+15x(16y²)-64y³

=125x³+75x²(-4y)+240xy²-64y³

=125x³-300x²y+240xy²-64y³

5 0

3 years ago

Help me answer this question.

neonofarm [45]

Answer:

<h2>8 units²</h2>

Step-by-step explanation:

Let side of the square = a

The , Area of square = a²

Now, Midpoint of Diagonal DB is E

And DE = 2 units

So, DB = 2 DE = 2 × 2 = 4 units