2 years ago

Pascal's Triangle

Mathematics

1 answer:

tiny-mole [99]2 years ago

4 0

Answer:

isk but i think u need to multiply

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Decrease $88 by 5%<br>please help i need step by step explanation

Viefleur [7K]

Answer:

$83.6

Step-by-step explanation:

Decrease smth by 5%

means to get 95% of the previous number

so we can just multiply this number by 0.95 to get the result

that is:

$88 * 0.95 = $83.6

8 0

3 years ago

What property justifies that 6x+9/3 =2x + 3? (see the pic of how the fraction is)

spayn [35]

Answer:

C. Distributive property

Step-by-step explanation:

Distributive property says that

$a\cdot (b+c)=a\cdot b+a\cdot c$

Consider left part of the expression

$\dfrac{6x+9}{3}=\dfrac{1}{3}\cdot (6x+9)$

By distibutive property,

$\dfrac{1}{3}\cdot (6x+9)\\ \\=\dfrac{1}{3}\cdot 6x+\dfrac{1}{3}\cdot 9\\ \\=2x+3$

3 0

3 years ago

Cot y, if csc y =-10/3 and cos y< 0

fredd [130]

$\csc y=-\dfrac{10}3\implies\sin y=-\dfrac3{10}$

$\cos^2y=1-\sin^2y\implies \cos y=\pm\sqrt{1-\dfrac9{100}}=\pm\dfrac{\sqrt{91}}{10}$

You're told that $\cos y$ , so omit the positive root.

$\cot y=\dfrac{\cos y}{\sin y}=\dfrac{-\frac{\sqrt{91}}{10}}{-\frac3{10}}=\dfrac{\sqrt{91}}3$