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2 years ago

Write an equation for a line with a slope of -2, and a y-intercept of 1.

Mathematics

2 answers:

cestrela7 [59]2 years ago

4 0

Y=-2x + 1

Use the formula y=mx+b
M is the slope. B is the y intercept.

MArishka [77]2 years ago

3 0

Y=-2x+1 .. slope is ur m

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Diagonals are always perpendicular in a

IrinaK [193]

Answer:

Rhombus n square

Step-by-step explanation:

6 0

2 years ago

In Pennsylvania the average IQ score is 101.5. The variable is normally distributed, and the population standard deviation is 15

blsea [12.9K]

Answer:

We conclude that the Pennsylvania school district have an IQ higher than the average of 101.5

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 101.5

Sample mean, $\bar{x}$ = 106.4

Sample size, n = 30

Alpha, α = 0.05

Population standard deviation, σ = 15

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 101.5\\H_A: \mu > 101.5$

We use one-tailed z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{106.4 - 101.5}{\frac{15}{\sqrt{30}} } = 1.789$

Now, $z_{critical} \text{ at 0.05 level of significance } = 1.96$

Since,

$z_{stat} > z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis.

Thus, we conclude that the Pennsylvania school district have an IQ higher than the average of 101.5

5 0

2 years ago

en la fiesta de ana ay chocaletes chicles y paletas a 10 le gustan los chicles y 7 las paletas y solo a dos le gustan los chicle

Lelu [443]

Answer:

Step-by-step explanation:

Si solicita el total, el total es 10 + 7 + 2, que es 19.

¡Marque como más inteligente!

7 0

2 years ago

Write an expression: the product of three and the quantity x minus 2

Anna35 [415]

3x-2 is the expression.

Hope this helps!

8 0

2 years ago

Eloise got the following scores on the first five quizzes of the semester: 6,9,7,8,9. There is one more quiz left. What score mu

elena55 [62]

Answer:

Step-by-step explanation:

when u add her past five scored together, you get 39. your equation would be

39 + x

------------- = 8

you multiply both sides by 6 and get

39+x = 48

subtract 39 from both sides to get 9

5 0

3 years ago