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3 years ago

What is the yyy-intercept of y=3-4xy=3−4xy, equals, 3, minus, 4, x?

2 answers:

7 0

We can rewrite the equation given above as,
y = 3 - 4x

This item asks us to determine the value of the y-intercept. The value is calculated by letting x of the equation be equal to zero. Applying this methodology to the given above,

y = 3 - 4(0)
y = 3

Hence, the y-intercept of the given function is 3.

sweet [91]3 years ago

7 0

So we are given the equation :
$y=3-4x$
In order to get the y-intercept, simply use the value x=0 in the equation like this:
$y=3-4\times0=3$
The y intercept is $y=3$

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A ball is thrown from a point 6 metres above the ground. The graph shows the height of the bake above the ground in metres. Esti

Margarita [4]

Answer:

1.38

Step-by-step explanation:

1.7-0.4=1.8

1.8/1.3=1.38

On graph place point at (1,8) and draw a triangle

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3 years ago

How to work out math problem %of 50 shirts is 35 shirts

CaHeK987 [17]

50 shirts is equal to 100% of the shirts right? So, to find what percentage 35 shirts is, you can divide 35 by 50 to get the decimal value of the percentage. This gives you 0.7, which is the same as 70%.

35 shirts are 70% of 50 shirts.

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3 years ago

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I’m thinking of a ten-digit integer whose digits are all distinct. It happens that the number formed by the first n of them is d

valentina_108 [34]

The problem here takes a brilliant mind to answer this. This problem can easily be answered using programming because we can not then and there push all the possibilities using paper and pen.
The answer is 3816547290.
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2 years ago

Sara bought a dress on sale for $30. She saved 45%. What was the original cost?

Arte-miy333 [17]

Answer:

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Step-by-step explanation:

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3 years ago

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

elena-14-01-66 [18.8K]

Answer:

P-value = 0.0368

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(right) 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, $z_{critical} \text{ at 0.05 level of significance } = 1.64$

Since,

$z_{stat} > z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, students in Pennsylvania have an IQ that is significantly greater than the state average.

P-value can be calculated with the standard normal table.

P-value = 0.0368

P-value is lower than the significance level.

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3 years ago