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3 years ago

I need help pls asap

Mathematics

2 answers:

BaLLatris [955]3 years ago

6 0

Answer:

Y=114 X=54

Step-by-step explanation:

Y and 114 are the same and the Top line is 180 degrees because it is straight so you can add 114 + 12= 126 which leaves 54 for X

JulijaS [17]3 years ago

5 0

They are both 114 becuase they are obtuse angles

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(2y+1.6)/0.8=30/2.5<br> Please Help!<br> Solve for Y

galina1969 [7]

y = 4

first note that the right side simplifies to 12, equation can be written

$\frac{2y+1.6}{0.8}$ = 12 ( multiply both sides by 0.8 )

2y + 1.6 = 9.6 ( subtract 1.6 from both sides )

2y = 8 ( divide both sides by 2 )

y = 4

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3 years ago

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Ulleksa [173]

Answer:

B: (2,[infinity]]

Step-by-step explanation:

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3 years ago

If the relationship is proportional, what is the missing value from the table?

lana [24]

Answer:

-4

Step-by-step explanation:

Ok so you get two sets of proportional pairs: -3 and -1 , and -30 and -10.

The relationship between these is that the first term is 3 times the second. So you divide the first term by 3 to get the second.

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3 years ago

For the mathematics part of the SAT the mean is 514 with a standard deviation of 113, and for the mathematics part of the ACT t

otez555 [7]

Answer:

Bob performed better in mathematics part of the SAT than the ACT

Step-by-step explanation:

We need to calculate the z-scores for both parts and compare them.

Z-score for the SAT is calculated using the formula:

$Z=\frac{X-\mu}{\sigma}$

where $\mu=514$ is the mean and $\sigma=113$ is the standard deviation, and $X=660$ is the SAT test score.

We plug in these values to obtain:

$Z=\frac{660-514}{113}$

$Z=\frac{146}{113}=1.29$ to the nearest hundredth.

We use the same formula to calculate the z-score for the ACT too.

Where $\mu=20.6$ is the mean and $\sigma=5.1$ is the standard deviation, and $X=27$ is the ACT test score.

We substitute the values to get:

$Z=\frac{27-20.6}{5.1}=1.25$ to the nearest hundredth.

Since 1.29 > 1.25, Bob performed better in mathematics part of the SAT

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3 years ago