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3 years ago

DETERMINE THE DIFFERENCE BETWEEN-2/5 and -0.75

Mathematics

1 answer:

timama [110]3 years ago

6 0

Answer:

0.3

Step-by-step explanation:

Convert -2/5 into a decimal.

-0.4.

Then subtract the two.

-0.4-(-0.75)

-0.4+(+0.75)

0.3

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Pls help me this i due today

finlep [7]

Step-by-step explanation:

due to the rules of crossing lines and their angles, the 2 angles opposite of each other must be equal.

so,

7x + 7 = 112

7x = 105

x = 15

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2 years ago

25 POINTS!! PRE-ALGEBRA MATH! PLEASE HURRY! I WILL GIVE BRAINLIEST!

yan [13]

Answer: We are using a line regression tool to solve the parameters asked in the problem. We can use online tools or that of Excel. According to the tool, the best fit values are

Slope0.3848 ± 0.03956

Y-intercept0.6053 ± 0.6370

X-intercept-1.573

1/Slope2.598

Step-by-step explanation: Best fit lines make sure that the standard deviation at each point is minimum from the best fit line.

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3 years ago

Read 2 more answers

Graph each line. Give the slope-intercept form for all standard form equations.

8090 [49]

Answer:

Slope Intercept Form is y=2x.

Step-by-step explanation:

Since slope-intercept form is y=mx+b, you need to rewrite 2x-y=0 in Slope-Intercept Form.

First, you want to subtract 2x from both sides. That comes out to -y = (-2x.)

Then, multiply each term by -1. A negative times another negative is a possitive, so -y would become y, and -2x would become 2x, giving you the answer of y=2x.

4 0

3 years ago

suppose that a restaurant chain claims that its bottles of ketchup contain 24 ounces of ketchup on average, with a standard devi

ivann1987 [24]

Answer:

The 96% confidence interval for the mean number of ounces of ketchup per bottle in the sample is 24 ± 0.029

Step-by-step explanation:

Given

Mean, x = 24 ounces

Standard deviation, σ = 0.2 ounces

Sample Size, n = 49 bottles of ketchup

Confidence Interval of 95% (0.95)

To calculate the confidence at this level, the following steps are to be followed;

1. Calculating degree of freedom:

Degree of freedom (df) is calculated by subtracting 1 from the sample size.

df = n - 1

df = 49 - 1

df = 48

2. Subtract the confidence level from 1, then divide by two.

α = (1 – .95) / 2 = 0.025

3. Look up the answers to (1) and (2) in the t-distribution table.

For 48 degrees of freedom (df) and α = 0.025,

We get 2.0106

4. Divide sample standard deviation by the square root of sample size.

i.e σ/√n

= 0.2/√49

= 0.2/7

= 0.02857

= 0.029

5. Finally, the 95% confidence interval is calculated using the following illustration.

X ± result in step 5

Where x = 24

So, we have

24 ± 0.029

8 0

3 years ago

Read 2 more answers

Solve the compound inequality. Then graph the solution set.<br> s-2 <-10 or-3s < 6

xxTIMURxx [149]

Answer:

{s | s < -8 or s >= -2}

Step-by-step explanation:

In order to solve an inequality we simply have to isolate the variable by applying the opposite operations on each side.

s - 2 < -10 ... add 2 to both sides

s < -8

-3s <= 6 ... divide both sides by -3, since we are dividing a negative number you must flip the sign

x >= -2

Therefore the final answer would be {s | s < -8 or s >= -2} which is the 3rd graphed multiple choice answer as seen attached to this answer.

4 0

3 years ago