Solve correctly and I’ll give brainliest

According to the question,

Time taken by Jesse to run 1 mile = 7 minutes

Also,

Time taken by Jesse to run 1 mile = 2½ minutes + Michael's time \(\;\)

Now, we can say that :

⇒ 7 minutes = 2½ minutes + Michael's time

⇒ (7 - 2½) minutes = Michael's time

⇒ (7 - 5/2) minutes = Michael's time

⇒ (14 - 5)/2 minutes = Michael's time

⇒ 9/2 minutes = Michael's time

⇒ 4½ minutes = Michael's time [Answer]

Step-by-step explanation:

Question:-In track practice, Jesse ran a mile in 7 minutes. His mile time was2.5 minutes faster than Michael's time. Write and solve an equation to calculate Michael's mile time.

Solution

Jessie time 7 minute

Michael’s time is 2.5 times slower

Divide 7 minutes by 2.5 to get answer

Jesse = 7

Michael = 2.5 X

7 = 2.5 X

7/2.5 X = 17.5 to check answer divide 17.5 by the 2.5, your answer is 7.

Or if it was 2.5 more

we subtract 2.5 from 7

=> 7 - 2.5

=> 4.5

=> 4 ½

----

Answer:

(f) can you plz mark brainiest

Step-by-step explanation:

infinite sequences of arithmetic expressions can have a value of 4

Step-by-step explanation:

infinite sequences of arithmetic expressions can have a value of 4

Answer:

1.6 * 0.215 = .344

Step-by-step explanation:

Here's some screenshots providing the explanation:

The critical value of t with df as 7 is 2.36, and the critical value of t with df as 102 is 2.62

In a hypothesis test, the critical value is a value that is used to decide whether to accept the null hypothesis or not. It is based on the level of significance that was selected, which is the highest likelihood that a Type I error could occur.

a)

On referring to the t-distribution table, which is statistical software, or a calculator to find the critical value of t for a 95% confidence interval with degrees of freedom (df) = 7. The two-tailed confidence level of 0.95 is the essential value. We discover that the crucial value of t for a 95% confidence interval with df = 7 is roughly 2.365 using a t-distribution table or program.

b)

The t-distribution table, statistical software, or a calculator are used in a similar manner to estimate the critical value of t for a 99% confidence interval with df = 102. The crucial value is equal to the 0.99 two-tailed confidence level. The crucial value of t for a 99% confidence interval with df = 102 is roughly 2.62, according to a t-distribution table or computer programme.

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Answer: \(38.7^{\circ}\)

Step-by-step explanation:

Use a calculator.

Answer:

X=11

Step-by-step explanation:

Vertical angles equal each other.

5x+10 = 7x -12

Then solve for x by placing all the X values on one side and the number values on the other side.

5x+10=7x-12

5x-7x=-12-10

-2x=-22

x=11

Answer: 12.5

You start with the equations "2x +2y=38" and "6+x=y". By adding and subtracting in the second equation, you get "2x +2y=38" and "x-y=-6". When you multiply the second equation by 2, you get "2x-2y=-12."

subtracting the equations "2x +2y=38" and "2x-2y=-12" gets you to "4y=50", where you have to divide two sides by 4 and get "y=12.5"

Step-by-step explanation:

Use z-score table to find the z-score that corresponds to .7000   ( 70%)

approx   .525   s.d.  above the mean

  .525  * 10 =  5.25  points above 100   = 105.25

we know that the spinner has an equal chance of landing on each section. Since there are a total of six sections on the spinner, we can assume that the probability of the arrow landing on any one section is 1/6 or approximately 0.1667.

Now, if the arrow is spun 72 times, we can use this probability to calculate the expected number of times the arrow will land on 4. To do this, we simply multiply the probability by the number of spins, as follows:

Expected number of times arrow lands on 4 = Probability of arrow landing on 4 x Number of spins
Expected number of times arrow lands on 4 = 0.1667 x 72
Expected number of times arrow lands on 4 = 12

So, we can expect the arrow to land on 4 approximately 12 times out of 72 spins. Of course, this is just an expected value, and the actual number of times the arrow lands on 4 may vary from this value due to random chance.

In summary, if we assume that the arrow on the spinner is equally likely to land on each section, and it is spun 72 times, we can expect the arrow to land on 4 approximately 12 times based on probability calculations.

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The probability of winning the top prize in the Pennsylvania Cash 5 lottery is: (43! / (5! * 38!)) / (43! / (5! * 38!)) = 1/C(43,5) = 1/69,096.

Probability is a measure of how likely an event is to occur. In the case of the Pennsylvania Cash 5 lottery, we can use probability to determine the chances of winning the top prize.

To win the top prize in the Pennsylvania Cash 5 lottery, a player must select the correct five different numbers between 1 and 43 (in any order). To calculate the probability of this happening, we use the formula: probability = (number of favorable outcomes) / (number of total outcomes).

The number of favorable outcomes is the number of ways that the five correct numbers can be selected from the 43 available numbers. Since the order of the numbers does not matter, this is known as a combination, and the formula for finding the number of combinations is: C(n,r) = n! / (r! * (n-r)!), where n is the total number of options (43) and r is the number of options to choose (5). This simplifies to 43! / (5! * 38!).

The number of total outcomes is the number of ways that any five numbers can be selected from the 43 available numbers, which is also a combination and can be calculated using the same formula: C(43,5) = 43! / (5! * 38!).

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The declaration states that the value of Arc EFC = 253°.

A measure is indeed a quantitative concept used to express how large a collection is. Each unique measure represents a different method for determining how large a collection is. It would initially appear that a set's cardinality is the only logical way to determine its number.

We can tell we are working with a circular that has 360 degrees because of the connection.

We can infer that we have it if we look at that file.

Arc EFC

Arc CD

Arc DE

And everything together give us 360,

Arc EFC + Arc CD + Arc DE = 360

If we examine the figure again, we can see that the central angle of an intercepted arc is identical to the arc's measure.

Arc CD is 90 degrees since the central angle is 90 degrees given

Arc DE is 17 degrees

Arc EFC + Arc CD + Arc DE = 360

If we input all the figures

Arc EFC + 90 + 17 = 360

Arc EFC + 107 = 360

Arc EFC = 360 - 107

Arc EFC = 253

Therefore, Arc EFC = 253°

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The correct questions is:

Circle O, and are diameters. Arc ED measures 17°. Circle O is shown. Line segments F C and A E are diameters. Line segments C O and B O are radii. Point B is between points A and C, and point C is between points E and C. Angle D C is a right angle. What is the measure of Arc E F C? 107° 180° 253° 270°

Answer:

39 is adjacent 42 is alternate interior

Step-by-step explanation:

The expressions that will give you a difference of 5 are: -3 - (-8) and 1 - (-4).

The difference of two expressions is determined by subtracting one from the other.

Find the difference of each of the expressions given to determine which will give us 5.

-3 - (-8)

= -3 + 8

= 5

-2 - 3 = -5 [this is not the same as 5]

1 - (-4)

= 1 + 4

= 5

7 - (-2)

= 7 + 2

= 9

-3 - (-8) and 1 - (-4) will give us a difference of 5.

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ANSWER :

EB = 9

EXPLANATION :

Note that if two chords have the same prependicular distance from the radius, then the chords are congruent.

The chord will be bisected into two equal parts.

If CD = 18, then AB is also 18.

and EB is AB/2 = 18/2 = 9

There are 36 cards in the box.  In this scenario, we are given that the probability of choosing a red card from a box is one-third. We also know that there are 24 blue cards in the box. Our goal is to find the total number of cards in the box.

Let's use the concept of probability to solve this problem. The probability of an event is defined as the ratio of the number of favorable outcomes to the total number of possible outcomes. In this case, the probability of choosing a red card is given as 1/3, and the favorable outcome is selecting a red card. Let R be the number of red cards, and T be the total number of cards in the box. The probability formula can be represented as:

Probability of choosing a red card = R / T

We are given that the probability of choosing a red card is 1/3:

1/3 = R / T

Since there are 24 blue cards in the box, we can represent the total number of cards as the sum of red and blue cards:

T = R + 24

Now, we can solve the system of equations to find the values of R and T:

1. 1/3 = R / T
2. T = R + 24

From equation 1, we can express R as:

R = (1/3) * T

Substitute this expression for R in equation 2:

T = (1/3) * T + 24

Multiplying both sides by 3 to eliminate the fraction, we get:

3T = T + 72

Subtracting T from both sides:

2T = 72

Now, divide by 2 to find the total number of cards, T:

T = 36

So, there are 36 cards in the box.

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Answer:

4x+8=x

Step-by-step explanation:

You can identify equivalent expressions if one of the expressions can be written like the other and it is usually written by combining any like terms on each side of the equation such as x-terms with x-terms and constants with constants.

These are the type of expressions that have similar value or worth but do not look the same.

This type of expression can be identified if one of the expressions can be written like the other and example can be seen below:

3(x + 3) and 3x + 9

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Answer:

I have recently learned about this and maybe I could help you if you have given the function but also let explain it.

Step-by-step explanation:

Domain is also known as pre image and also 'x' I.e first element.

Range is also known image and also y I.e second element .

And about inverse we just have to write second element at first and first element at second.

Hope it helps

Answer:

1089

Step-by-step explanation:

by multiplying the 2 numbers in any order until 4 digits are obtained.

3 × 11 = 33

33 × 3 = 99

99 × 11 = 1089 ← divisible by 3 and 11

Answer:

Around 7.5

Since the shaded region is very slightly less than half, we can estimate that the answer is somewhere around or exactly 7.5 since it is half of 15.

Answer:

y = x - 3

Explanation:

take two points: (1, -2), (2, -1)

Find slope:

\(\boxed{\sf \frac{y_2 - y_1}{x_2 - x_1} }\) where (x1, y1), (x2, y2)

\(\sf \rightarrow \dfrac{-1-(-2)}{2-1}\)

\(\sf \rightarrow 1\)

Equation:

y - y1 = m(x -x1)

y - (-2) = 1(x-1)

y + 2 = x - 1

y = x - 3

Answer:

\(\huge \boxed{\bf{y = x - 3}}\)

Step-by-step explanation:

Given:-

Take two point:

To find:-

Ans:-

~Find slope in two point:

\(\sf \to m = \frac{y_2 - y_1}{x_2 - x_1} \)

\(\sf \to m = \frac{-1 - (-2)}{2 - 1} \)

\(\sf \to m = \frac{1}{1} \)

\(\sf \to m = 1 \)

\( \: \)

~Find equation:

\( \sf \to y - y_1 = m(x - x_1) \)

\( \sf \to y - (-2) = 1(x - 1) \)

\( \sf \to y + 2 = x - 1 \)

\( \sf \to y = x - 1 - 2 \)

\( \sf \to y = x - 3 \)

\( \: \)

\( \huge\colorbox{blue}{BlackPain} \)

The number of terms in geometric series with common ratio 0.5 is 5.

A geometric series is a set of integers where each term following the first is created by multiplying the term before it by a predetermined value called the common ratio. To put it another way, each term in the series is created by multiplying the term before it by a set integer.

The sum of a finite geometric sequence is given by the formula:

\(S = a(1 - r^n)/(1 - r)\)

Where, S is the sum of the series,

a is the first term,

r is the common ratio, and n is the number of terms.\(55.5625 = 28(1 - 0.5^n)/(1 - 0.5)\\\\55.5625(1 - 0.5) = 28(1 - 0.5^n)\\27.5625 = 28 - 28(0.5)^n\\0.4375 = (0.5)^n\\n = log(0.4375)/log(0.5)\\n = 4.17\)

Rounding the numbers, we have n = 5.

Hence, the number of terms in geometric series is 5.

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that it is important for likert-type scale response choices to be balanced at the ends of the response continuum. This means that there should be an equal number of positive and negative response options to avoid any bias or skew in the results.

An explanation for this is that if there are too many positive or negative response options, respondents may feel pressured to choose a certain option even if it doesn't accurately reflect their true opinion. This can result in inaccurate data and can skew the results of the survey or study.

balancing the response choices on a likert-type scale is crucial for obtaining accurate and unbiased data. By having an equal number of positive and negative options, respondents are more likely to provide honest and accurate responses.

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(a) When he is 10 feet from the base of the light, the rate at which the length of his shadow changing is 7.5 ft/s

(b) When he is 10 feet from the base of the light, the rate at which the tip of his shadow changes is 2.5 ft/s.

We have, the height of man, CD = 6 feet

Height of light , AB = 16 feet

Rate of walk by man, dx/dt = 5 feet per second.

a) we have to calculate the rate at which the length of his shadow is moving when he is 10 feet from the base of the light.

let x feet be the distance between the light and man and y feet be the distance between the light and man's shadow(E) i.e BC = x ft. and BE = y ft.

By using ratio of similar triangles,

16/y = 6/(y - x)

On cross multiplication,

16(y - x) = 6y

16y - 15x = 6y

16y - 6y = 15x

10y = 15x

Dividing by 3 on both sides,

2y = 3x

On differentiating both sides with respect to t,

2(dy/dt) = 3(dx/dt)

dy/dt = (3/2)(dx/dt)

dy/dt = (3/2)(5)

dy/dt = 15/2

dy/dt = 7.5 ft/s

Therefore, the rate at which the length of his shadow is changing is 7.5 ft/s.

b) We have to calculate the rate at which the length of his shadow is changing when he is 10 feet from the base of the light.

Length of shadow, CE = y - x

Rate of change of shadow is calculated by differentiating length with respect to time.

d(CE)/dt = dy/dt - dx/dt

d(CE)/dt = 7.5 - 5

= 2.5 ft/s

Therefore, the rate at which the length of his shadow is changing is 2.5 ft/s.

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The equation that models the total amount of money is a linear equation

The equation that models the total amount of money that Madison spends on fruit is 0.6b + 1.74p = 10.38

The given parameters are:

Total amount = $10.38

Total amount on b bananas = 0.60b

Total amount on p pears = 1.74p

So, the equation is:

Banana + Pears = Total amount

This gives

0.6b + 1.74p = 10.38

Hence, the equation that models the total amount of money that Madison spends on fruit is 0.6b + 1.74p = 10.38

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Answer:

215.25 is what she earns now

Step-by-step explanation:

first find 2.5% of 210   (2.5/100)*210

= 5.25

then add 5.25 to 210

=215.25

hope this helped

Answer:

Step-by-step explanation:

Where are the expressions?

Often thought of an extension of the t-test, ANOVA is appropriate for independent variables with "More than two categories" (Option B)

ANOVA is commonly used to compare means across multiple groups or categories and determine if there are significant differences among them.

It is not suitable for independent variables with less than two categories or only two categories.

Note that ANOVA (Analysis of Variance) is a statistical technique used to compare means among multiple groups to determine if there are significant differences between them.

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