Can anyone help me with 2 and 3 (different one)

Mathematics

2 answers:

Aloiza [94]3 years ago

5 0

Fraction would be 30/100 and decinal would be .30 and ratio would be 30/100

babymother [125]3 years ago

5 0

2.) the fraction is 3/10 because there are 100 blocks and 30 of them are filled
Decimal is .3 because it is 30% of 100
The ratio is 3:10

3.) part is 40 because 50% of 80 is 40 and whole is 80 because that’s the full number without the percentage, percentage is 50 because 50% is the percentage you have to get this means it’s 40/80 = 50/100 we know this is correct because they both simplify to 1/2=50%

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8 ( 8x - 4) = -7 (-x - 5)

tiny-mole [99]

X=67/57 or X= 1.1754

6 0

3 years ago

Pls Help asap

Alla [95]

Answer:

1. Q1=7 Q3=12 IQR=5

2. Q1=8 Q3=33 IQR=25

3. Q1=4.5 Q3=10 IQR=5.5

Step-by-step explanation:

hope this helps have a good day or night

3 0

3 years ago

Given: cosθ= -4/5 , sin x = -12/13 , θ is in the third quadrant, and x is in the fourth quadrant; evaluate tan 1/2 θ

mrs_skeptik [129]

Answer:

Step-by-step explanation:

If you're looking for what the half angle of the tangent of theta is, I'm a bit confused as to why you think the angle in the 4th quadrant, x, is relevant. But maybe you don't know it isn't and it's a "trick" to throw you off. Hmm...

Anyways, the half angle identity for tangent is

$tan(\frac{\theta}{2})=\frac{sin\theta}{1+cos\theta}$

There are actually 3 identities for the tangent of a half angle, but this one works just as well as either of the others do, so I'm going with this one.

If theta is in QIII, the value of -4 goes along the x axis and the hypotenuse is 5. That makes the missing side, by Pythagorean's Theorem, -3. Filling in our formula:

$tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{1+(-\frac{4}{5}) }$ which simplifies a bit to