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2 years ago

Which set of expressions are not equivalent?

Mathematics

1 answer:

IrinaK [193]2 years ago

3 0

Expression,
• 4(3a) - 2(4a) and 4a2
is not equivalent.

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Is 700 yards bigger then 2000 feet?

anzhelika [568]

Answer:

Yes, 700 yards bigger than 2000 feet because 700 yards = 2100 feet

Step-by-step explanation:

There are 3 feet in a yard, so that means we need to multiply 700 yards by 3 to get the number of feet there are in 700 yards.

700 yards × 3 feet = 2100 feet

700 yards = 2100 feet

2100 feet > 2000 feet

7 0

2 years ago

Read 2 more answers

Which of the following is not always true for a function?

lawyer [7]

<span>C.
Each y-value has only one x-value.
y value can have many x-values</span>

4 0

2 years ago

Through: (3,-2) and (0, -2)

vitfil [10]

Answer: IF FINDING THE EQUATION,
y= -2

Explained : m came out to be zero, so there is no mx term.

5 0

2 years ago

Write the standard form of the quadratic function whose graph is a parabola with the given vertex and that passes through the gi

Sonja [21]

Answer:

$y = \frac{16}{3} x^{2} + 16x + \frac{20}{3}$

3 0

2 years ago

An SRS of ten brands of breakfast cereals is tested for the number of calories per serving. The following data result: 185, 190,

Pepsi [2]

Using the t-distribution, as we have the standard deviation for the sample, it is found that the 95% confidence interval estimate for the mean number of calories for servings of breakfast cereals is (195.3, 215.7).

<h3>What is a t-distribution confidence interval?</h3>

The confidence interval is:

$\overline{x} \pm t\frac{s}{\sqrt{n}}$

In which:

$\overline{x}$ is the sample mean.
t is the critical value.
n is the sample size.
s is the standard deviation for the sample.

From the sample and the significance level of 0.05, we have that the parameters are given by:

$\overline{x} = 205.5, s = 14.2, n = 10, t = 2.2622$

Hence:

$\overline{x} - t\frac{s}{\sqrt{n}} = 205.5 - 2.2622\frac{14.2}{\sqrt{10}} = 195.3$

$\overline{x} + t\frac{s}{\sqrt{n}} = 205.5 + 2.2622\frac{14.2}{\sqrt{10}} = 215.7$

The 95% confidence interval estimate for the mean number of calories for servings of breakfast cereals is (195.3, 215.7).

More can be learned about the t-distribution at brainly.com/question/16162795

8 0

1 year ago