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fgiga [73]
3 years ago
9

Need help with this one​

Mathematics
2 answers:
Aloiza [94]3 years ago
7 0

Answer:

At x intercept, x = 0

2.8(0)+5.7y+5.8=0

y=-5.8/5.7

=-1.02

At y intercept, y=0

2.8x+5.7(0)+5.8=0

x=-5.8/2.8

=-2.07

Ann [662]3 years ago
3 0

Answer:

X ans y intercepts are

xintercept (s) : (-2.0,0) <em>you can roud if necessary </em>

y intercept(s) : (0,-1.01754385) <em>you can round if nessecary </em>

Step-by-step explanation:

to find the x and y intercepts simply plug in o to replace x then when you solve for x plug in xto solve for y

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Radda [10]

Decreased by means " -".

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Answer A.

7 0
3 years ago
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Complete the equation of the line whose y-intercept is (0, -1) and slope is 4.<br> (Khan academy)
vagabundo [1.1K]

Answer:

y = 4x - 1

Step-by-step explanation:

y = mx + b

Here m is slope and b is y-intercept

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y = 4x - 1

5 0
3 years ago
Previously, an organization reported that teenagers spent 24.5 hours per week, on average, on the phone. The organization thinks
Lena [83]

Answer:

We need to develop a one-tail t-student test ( test to the right )

We reject H₀  we find evidence that student spent more than 24,5 hours on the phone

Step-by-step explanation:

Sample size  n = 15     n < 30

And we were asked if the mean is higher than, therefore is a one-tail t-student test ( test to the right )

Population mean   μ₀  = 24,5

Sample mean   μ  =  25,7

Sample standard deviation s = 2

Hypothesis Test:

Null Hypothesis      H₀                             μ  =  μ₀

Alternative Hypothesis     Hₐ                  μ  >  μ₀

t (c) =  ?

We will define CI = 95 %  then   α = 5 %   α = 0,05    α/2 =  0,025

n = 15     then degree of freedom    df = 14

From t-student table  we get:  t(c) = 2,1448

And  t(s)

t(s) = ( μ  -  μ₀  ) / s/√n

t(s) = (25,7 - 24,5) /2/√15

t(s) = 2,3237

Now we compare   t(c)   and  t(s)

t(c)  =  2,1448         t(s)  = 2,3237

t(s) > t(c)

Then we are in the rejection region we reject H₀   we have evidence at 95% of CI that students spend more than 24,5 hours per week on the phone

8 0
3 years ago
What is the sum, in lowest terms?
m_a_m_a [10]

Answer:

1/2 + 3/4 + 11/4 +11/4

=27/4

3 0
3 years ago
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mixas84 [53]
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