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4 years ago

Which is the solution to the inequality y+15 <3?

1 answer:

6 0

To solve an equation or inequality, you can add the same value to both sides of the expression. Here, it is convenient to choose that value to be the opposite of the constant (+15) added to y, so that constant is replaced by zero.

y + 15 - 15 < 3 - 15 . . . . . we have added -15 to both sides

y < -12 . . . . . . . . . . . . . . . the result of simplifying. This is your solution.

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If a medium sized tree (13/27 ) casts a 39/40 sized shadow.. how big of a shadow would the full grown tree have?

erica [24]

Answer:

53\40

Step-by-step explanation:

27-13=14

39+1=40 14-1=13 13+40=53

53\40

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3 years ago

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muminat

Answer:

(8,2)

Step-by-step explanation:

The solution is where the two graphs intersect.

The two graphs intersect at x=8 and y=2

(8,2)

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3 years ago

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nordsb [41]

Answer:

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Step-by-step explanation:

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3 years ago

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Jlenok [28]

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3 years ago

Complete parts (a) through (c) below.

nexus9112 [7]

Answer:

a) $t_{crit}=1.34$

b) $t_{crit}=-1.33$

c) $t_{crit}=\pm 2.11$

Step-by-step explanation:

Part a

$\alpha=0.1$ represent the significance level

df =15

Since is a right tailed test the critical value is given by:

$t_{crit}=1.34$

And we can use the following excel code to find it: "=T.INV(0.9,15)"

Part b

$\alpha=0.1$ represent the significance level

n=20 represent the sample size

First we need to find the degrees of freedom given by:

$df=n-1=20-1=19$

Since is a left tailed test the critical value is given by:

$t_{crit}=-1.33$

And we can use the following excel code to find it: "=T.INV(0.1,19)"

Part c

$\alpha=0.05$ represent the significance level

n=18 represent the sample size

First we need to find the degrees of freedom given by:

$df=n-1=18-1=17$

The value of $\alpha=0.05$ and $\alpha/2 =0.025$

Since is a two tailed tailed we have two critical values is given by:

$t_{crit}=\pm 2.11$

And we can use the following excel code to find it: "=T.INV(0.025,17)"

4 0

3 years ago