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Makovka662 [10]
2 years ago
12

Given that 8x−4y=39 Find y when x=5 Give your answer as a fraction in its simplest form

Mathematics
2 answers:
elena55 [62]2 years ago
7 0

Answer:

answer is 1/4 or One divided by four

strojnjashka [21]2 years ago
7 0

Answer:

y=\frac{1}{4}

Step-by-step explanation:

8x-4y=39; x=5\\\\8(5)-4y=39\\\\40-4y=39\\\\40-40-4y=39-40\\\\-4y=-1\\\\\frac{-4y=-1}{-4}\\\\\boxed{y=\frac{1}{4}}

Hope this helps.

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Answer:

(25.732,30.868)

Step-by-step explanation:

Given that in a random sample of 42 ​people, the mean body mass index​ (BMI) was 28.3 and the standard deviation was 6.09.

Since only sample std deviation is known we can use only t distribution

Std error = \frac{s}{\sqrt{n} } =\frac{6.09}{\sqrt{42} } \\=0.9397

df = 42-1 =41

t critical for 99% two tailed = 2.733

Margin of error= 2.733*0.9397=2.568

Confidence interval lower bound = 28.3-2.568=25.732

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3 0
2 years ago
Is 11p-7q polynomial
REY [17]
Answer:  Yes; this is polynomial.

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2 years ago
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Standard form for y=mx+b​
butalik [34]

Answer:

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Step-by-step explanation:

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2 years ago
Simplify h= 105sin (0.0698(90+1)) + 105
IrinaK [193]

Answer:

h= 116.616

Step-by-step explanation:

we have

h= 105sin (0.0698(90+1)) + 105

step 1

Solve (90+1)

h= 105sin (0.0698(91)) + 105

step 2

Solve 0.0698(91)

h= 105sin (6.3518) + 105

step 3

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step 4

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