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3 years ago

REALLY NEED HELP

Mathematics

1 answer:

artcher [175]3 years ago

3 0

Answer:

Y=-5/3x

Step-by-step explanation:

Use the slope formula and slope-intercept form y=mx+b to find the equation.

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How to factor 9x^2+5x-12

bekas [8.4K]

Hi Stacey

9x^2+5x-12

Answer : Doesn't factor

I hope that's help and please if you have questions you can ask me !

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3 years ago

B. has 15 marbles and he got 123 more marbles add those two numbers and see what the number rounds to.

olganol [36]

Answer:

100 if rounded to hundreds

140 if rounded to tens

Step-by-step explanation:

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4 years ago

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EleoNora [17]

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3 years ago

Exact value of cos45

Anit [1.1K]

It's a value you should probably memorize:

$\cos45^\circ=\dfrac{\sqrt2}2=\dfrac1{\sqrt2}$

You can derive it using some trigonometric identities, other known values of cosine, and properties of the cosine function. For example, using the double angle identity for cosine:

$\cos^2x=\dfrac{1+\cos2x}2$

If $x=45^\circ$ , then

$\cos^245^\circ=\dfrac{1+\cos90^\circ}2$

and you probably know that $\cos90^\circ=0$ , so

$\cos^245^\circ=\dfrac12$

When we take the square root, we should take the positive root because $\cos x>0$ whenever $0^\circ$ :

$\cos45^\circ=+\sqrt{\dfrac12}\implies\cos45^\circ=\dfrac1{\sqrt2}$

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3 years ago

If the Federal Reserve decreases the reserve rate from 4% to 2%, how does this affect the amount of money that would result beca

Snezhnost [94]

55,000÷0.04
=1,375,000

55,000÷0.02
=2,750,000

2,750,000−1,375,000
=1,375,000 increase

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3 years ago