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3 years ago

Miguel bought a table on sale for $266. This price was 65% less than the original price.

Mathematics

2 answers:

Firdavs [7]3 years ago

8 0

p - 0.27p = $ 219

0.73p = $ 219

p = $ 219 / 0.73

p = $ 300. i don't know if this is fully right tho

Agata [3.3K]3 years ago

4 0

Answer: 409.23

Step-by-step explanation: Step 1: If 65% of a number is 266, then what is 100% of that number? Setup the equation.

266

65% = Y

100%

Step 2: Solve for Y

Using cross multiplication of two fractions, we get

65Y = 266 x 100

65Y = 26600

Y = 26600

100 = 409.23

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X y

Darina [25.2K]

Answer:

Part 1) The rate of change is $\frac{17}{15}$

Part 2) The initial value is 68

Part 3) The function rule to the linear model is $y=\frac{17}{15}x+68$

Step-by-step explanation:

we know that

The linear equation in slope intercept form is equal to

$y=mx+b$

where

m is the slope or unit rate

b is the y-intercept or initial value

step 1

Find the slope

take two points from the table

(0,68) and (15,85)

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute the values

$m=\frac{85-68}{15-0}$

$m=\frac{17}{15}$

In a linear function , the slope is the same that the rate of change

therefore

The rate of change is $\frac{17}{15}$

step 2

Find the y-intercept

we know that

The y-intercept is the value of y when the value of x is equal to zero

Looking at the table

For x=0, y=68

therefore

The y-intercept is

$b=68$

The y-intercept is also called the initial value

therefore

The initial value is 68

step 3

Determine the function rule to the linear model

$y=mx+b$

we have

$m=\frac{17}{15}$

$b=68$

substitute

$y=\frac{17}{15}x+68$

8 0

3 years ago

Consider a left-tailed test, where the p-value is found to be 0.10. If the sample size n for this test is 49, then the t statist

tigry1 [53]

Answer:

$df=n-1=49-1=48$

We know that the p value is 0.1, and since is a left tailed test would be given by:

$p_v = P(t_{48} < t_{calculated})=0.1$

And we can find the calculated value using excel or the t table.

If we use the following excel code we got: "=T.INV(0.1,48)"

And the calculated value is $t_{calculated}=-1.29944$

Step-by-step explanation:

State the null and alternative hypotheses to be tested

We need to conduct a hypothesis in order to determine if the true mean is lower than specified valu $\mu_o$ , the system of hypothesis would be:

Null hypothesis: $\mu \geq \mu_o$

Alternative hypothesis: $\mu < \mu_o$

Compute the test statistic

We don't know the population deviation, so for this case is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

We can find the degrees of freedom for this test given by:

$df=n-1=49-1=48$

We know that the p value is 0.1, and since is a left tailed test would be given by:

$p_v = P(t_{48} < t_{calculated})=0.1$

And we can find the calculated value using excel or the t table.

If we use the following excel code we got: "=T.INV(0.1,48)"

And the calculated value is $t_{calculated}=-1.29944$

3 0

3 years ago

A deposit for a trip is $986. If you pay today, you can receive a 10% discount. What will the deposit be if you pay today?

stepan [7]

Answer:

887.4

Step-by-step explanation:

Please mark me as brainliest if I get it right

3 0

3 years ago

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Given: ABCD is a parellelogram. Prove: AB=CD and BC=DA'

alexgriva [62]

Parallelogram opposites side theorem which states that If a quadrilateral is a parallelogram , then it’s opposite sides are congruent

5 0

3 years ago

The number math problems Michel can solve varies directly with the amount of time he spends solving math problems. Michel can so

Mama L [17]

Answer:

40 problems

Step-by-step explanation:

8 problems : 5 mins

? : 25 mins

8 x 5 = 40

40 problems

hope this helps

braonliest plz?

5 0

3 years ago

Read 2 more answers