a car travel 20kph faster than a truck. the car cover 350 km in two hours less than the time it takes the truck to travel the same distance. what is the speed of the car? how about the truck?

Answer:

(-7, -5)

Step-by-step explanation:

y = x + 2

2x - 3y = 1

2x - 3(x + 2) = 1

2x - 3x - 6 = 1

-x - 6 = 1

    +6  +6

---------------

-x = 7

÷-1  ÷-1

-------------

x = -7

y = x + 2

y = -7 + 2

y = -5

I hope this helps!

The integer representing the entrance of the cave is 14.

An integer is a whole number from the set of negative, non-negative, and positive numbers. An integer is a number with no decimal or fractional part, and it includes negative and positive numbers, including zero. A few examples of integers are: -5, 0, 1, 5, 8, 97, and 3,043. A set of integers, which is represented as Z, includes: Positive Numbers: A number is positive if it is greater than zero. or we can say an integer is the number zero, a positive natural number or a negative integer with a minus sign. The negative numbers are the additive inverses of the corresponding positive numbers. In the language of mathematics, the set of integers is often denoted by the boldface Z o

Given that, The entrance of a cave is at an elevation of 14 meters. the lowest part of the cave is at an elevation of -86 meters.

We know that, the integer numbers or simply integers are sets of numerical signs that contain the natural numbers (positive numbers), the zero number "0" and the opposite numbers corresponding to the negative numbers of the natural numbers. The integer numbers have no decimal part, are not fractional, nor have imaginary part.

The entrance is at 14 meter, that means the entrance is represented by the integer 14.

Hence, The integer representing the entrance of the cave is 14.

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For Function 3(5/4)³ , 3 is inital value , 5/4 is base with (-∞, ∞) as Domain

An exponential function is one with the mathematical formula f (x) = ax, where "x" is a variable and "a" is a constant that serves as the function's base and must be greater than 0.

An exponential function f(x) = abˣ,

According to the question,

The given exponential function : f(x) =3(5/4)³

Here, 3 is the Inital value

The base of the function is 5/4

As the function is real, Domain = (-∞, ∞)

The function given only has one value. That is the entirety of its range: [3(5/4)^3, 3(5/4)^3]

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Answer:

length of rope=34.56

Step-by-step explanation:

1) find the circumference of the circle (its the full circle just separated into 2 halves)

c=2[tex]\pi[/tex]r

c=2[tex]\pi[/tex]4

c=25.13

2) find the circumference of the smaller circle

c=2[tex]\pi[/tex]r

c=2[tex]\pi[/tex]3

c=18.85

divide this answer by 2 because its a semi-circle

c=9.43

3) add the 2 values together

length of rope=34.56

Answer:

  $824.39

Step-by-step explanation:

You want to know the monthly deposit required for a 50-year ordinary annuity to accumulate enough value at 5% so that annual withdrawals can be made of $110,000 without affecting the principal.

In order for the annual interest to be $110,000 at 5%, you have ...

  I = Prt

  110,000 = P(0.05)(1)

  2,200,000 = P . . . . . . . multiply by 20

The value of the annuity must be $2.2M after 50 years.

In order for the annuity to have that future value, the monthly payment must be $824.39. This value can be found using a suitable financial calculator or spreadsheet. (Or the appropriate formula from your list.)

The solution of the given inequality -3/2(y/6 + 4) < -2x will be 8x - y < 24.

A difference between two values indicates whether one is smaller, larger, or basically not similar to the other.

In other words, inequality is just the opposite of equality for example 2 =2 then it is equal but if I say 3 =6 then it is wrong the correct expression is 3 < 6.

As per the given,

-3/2(y/6 + 4) < -2x

-3y/12 - 6 < -2x

2x - 3y/12 < 6

24x - 3y < 72

8x - y < 24

Hence "The given inequality -3/2(y/6 + 4) -2x has an answer of 8x - y 24.".

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After a comparison of females and males on the number of hours of a day that the subject watched the TV.

The hypotheses of a significance test to analyze whether the population means differ for females and males would be as follows:

(a) H0: μ1 = μ2 (the population means are equal for females and males)

Ha: μ1 ≠ μ2 (the population means are not equal for females and males)

(b) In order to conduct the significance test, we would need to calculate the t-statistic and the P-value. However, the question does not provide the necessary information to do so (e.g. sample means, standard deviations, sample sizes). Without this information, we cannot conduct the significance test and interpret the P-value.

(c) Without conducting the significance test, we cannot conclude anything about whether there is a gender difference in TV watching.

(d) Similarly, without conducting the significance test and calculating the confidence interval, we cannot determine whether the confidence interval would contain 0 or not.

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Option A and C have a proportional relationship.

What is proportional relationship?

Relationships between two variables that are proportional occur when their ratios are equal. Another way to consider them is that in a proportional relationship, one variable is consistently equal to the other's constant value. The "constant of proportionality" is the name of this constant.

(a) Total cost of buying x avocados be p

 So, p = 4x

(b) Let the total amount a taxi driver earns be y

So, y = 3 + m

(c) Let the total number of toys be x

So, x = 2w

(d) Let the total amount a Gardner earns be c

So, c = 10 + 15r

Hence, option A and C have a proportional relationship.

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0.060819 inches per second is the radius of the balloon increasing at the instant that the balloon has a radius of 12 inches

Given that

A large helium balloon is being inflated at the rate of 110 cubic inches per second

radius = 12

volume = [tex]\frac{4}{3}[/tex] [tex]\pi[/tex][tex]r^{3}[/tex]

            = 4/3 [tex]\pi[/tex] [tex](12)^{3}[/tex]

            =7234.55

V = 4/3 πr³

dV/dt = 4/3 (3πr² dr/dt) = 4πr² dr/dt

dr/dt = dV/dt / (4πr²)

dr/dt = dV/dt / (4πr²)

= 110/(4[tex]\pi[/tex]×([tex]12^{2}[/tex]))

= 0.060819 inches per second

0.060819 inches per second is the radius of the balloon increasing at the instant that the balloon has a radius of 12 inches

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Answer:

A. 0°

Step-by-step explanation:

Answer:

Option A is correct.

Solution for the given equation is,

Step-by-step explanation:

Given that :

Let

then our equation become;

A quadratic equation is of the form:

.....[2] where a, b and c are coefficient and the solution is given by;

Comparing equation [1] and [2] we get;

a = 2 b = -1 and c =-1

then;

Simplify:

Simplify:

y = 1 and

Substitute y = cos x we have;

⇒

and

⇒

The solution set:  

Therefore, the solution for the given equation   is,

Answer: 11

Step-by-step explanation:

I think sorry

Answer:

9

Step-by-step explanation:

The location of the circumcenter, of the obtuse triangle, which is the center of the circle that inscribes the triangle is at a point lower than the base of the triangle, and therefore, outside the triangle, because the angle of the arc formed by the base at the center is larger than 180°, which is the angle formed by the diameter/ The correct option is option c.

c. Outside the triangle

The circumcenter is the point of intersection of the perpendicular bisectors of the sides of the triangle.

The location of the circumcenter can be inside the triangle, outside the triangle, or on the triangle.

The circumcenter is located on the inside of an acute triangle, while it is located on the hypotenuse side of a right triangle.

The circumcenter is the location of the center of the circle that circumscribe the triangle, such that in an acute triangle, the angle at the center (twice the angle at the circumference), is always less than 180°, which is the angle made by the diameter, which keeps the diameter line and the circumcenter, passing inside the triangle.

However, in an obtuse triangle, the angle at the center, is larger than 180°, such that the line joining the base of the triangle, inscribed in the circle is located above the diameter, and therefore, located above the circumcenter.

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If we roll a dice three times and we can stop in the first time only when it come 6. The expected payoff is 4.557.

According to the question:

The number of times you can get 06 are:

(i). If the third toss rolls a 6:  6

In this case her first two digits can be any of the five numbers. No. The number of cases is 5 × 5 = 25.

(ii). If you get a 6 on the second throw. The number of cases is -5 (no third throw in this case)

(iii). If the first roll rolls a 6. The number of cases is -1.

2. Number of times you can get 5 Are-

(i). If there is only one 5 in 3 rolls . The number of cases will simply be

3 × 4 × 4

(Because there are 5 possibilities in 3 places and 4 in the remaining places.)

(ii). If there are two 5s, the number of cases is 3×4. (Because there are 3 places where 5 cannot exist, and the places are filled with 4 possibilities.)

(iii). If there are three 5s, the number of possibilities is -1.

Similarly, for 4,3,2,1, the number of possibilities is (3*3*3 + 3*3 + 1), (3*2*2 + 3*2 + 1), (3 × 1×1 + 3×1 + 1), 1 each.

So the number of possibilities for 1,2,3,4,5,6 are 1,7,19,37,61,31 respectively .

You can now get the expected profit by taking the weighted average of the numbers with the possible outcome odds.

So the result is (6*31 + 5*61 + 4*37 + 3*19 + 2*7 + 1)/(31+61+37+19+7+1)

which is 711/ 156 = 4.557

Therefore, the expected payout is 4.557.

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Answer:

1). If the algae doubles every day, it will take 15 days for it to cover half the lake. This means it would happen on January 15.

2). Your friend may be skeptical because they may not believe that the algae can grow so quickly and cover the entire lake in just 30 days. Alternatively, they may not believe that you have accurate information about the situation.

3). Removing most of the algae on January 29 would significantly reduce the amount of algae in the lake and would likely help prevent the lake from becoming completely covered. However, if 1% of the surface is still covered with algae on February 1, it is possible that the problem has not been fully solved and the algae could continue to grow and potentially become a problem again in the future. It would be best to continue monitoring the lake and taking action to prevent the algae from growing.

Step-by-step explanation:

graph till you find the answer

B

Answer:

In an exponential equation, both sides can be written as power of the same base when the base is the same on both sides of the equation. For example, the equation "2^x = 8" can be rewritten as "2^x = 2^3" because the base, 2, is the same on both sides of the equation.

To solve an exponential equation where both sides can be written as powers of the same base, you can set the exponents equal to each other and solve for the variable. In the example above, setting the exponents equal to each other would give us "x = 3", so the solution is x = 3.

On the other hand, in an exponential equation where both sides can not be written as powers of the same base, you cannot simply set the exponents equal to each other. Instead, you need to use a different method to solve the equation. One way to do this is to use the property of exponents that states that "a^x * a^y = a^(x+y)" to rewrite the equation so that both sides have the same base. For example, the equation "2^x * 3^y = 6" can be rewritten as "2^x * 2^(log3(6)) = 2^(x + log3(6))", where "log3" represents the logarithm with base 3. This allows us to set the exponents equal to each other, giving us "x + log3(6) = 1", and we can solve for x to find the solution.

Which equation has no solution

A 4(x+2)=4(x-3)

B -2(x+1)=3x-2-5x

C 4 (x+1)-7x=-3(x-1)+1

D -5(x-7)=2(2x+3)+x+7

Answer: The answer to this quesiton is A.

B-all real numbers.

C- all real numbers.

D- x=11/5

A= no solution.

so the answer would be A i hope this helps✅

Answer:

It is a

Step-by-step explanation:

You are welcome.

ok so its just 1/125 I posted a comment about it by accident can you pick me as brainiest :>

Edit bro it took out my one it said 1/25

Ok so like i just saw it doesnt have 1/125 its 1/5^3

Letter a

:D

Pick me please! :>

The rationale underlying the use of projective personality tests, such as the Rorschach test and the thematic apperception test, is that they reveal the subjects' personalities by eliciting responses to vague, ambiguous stimuli.

The rationale underlying the use of projective personality tests, such as the Rorschach test and the Thematic Apperception Test, is that they can reveal a person's unconscious thoughts, feelings, and motivations. These tests use vague and ambiguous stimuli, such as inkblots or pictures, and ask the person to describe what they see or make up a story about the stimuli. The person's responses are believed to reflect their underlying personality traits and psychological conflicts.

The theory is that when faced with ambiguous stimuli, people project their own thoughts, feelings, and motivations onto the stimuli, revealing their unconscious processes.

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The fraction of people that preferred lunch is of:

30%.

The three options are given as follows:

The sum of the fractions of each of these options is of:

100%.

10 of the respondents preferred breakfast, and there were 50 people, hence the fraction that preferred breakfast is of:

10/50 x 100% = 20%.

Then the fractions in this problem are given as follows:

Thus the missing fraction, which is the fraction of people that prefer lunch, is obtained as follows:

50 + 20 + x = 100

70 + x = 100

x = 30%.

(as the sum of the three fractions is of 100%, as they represent all the possible outcomes).

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Answer:

33.33%

Step-by-step explanation:

Calculate percentage change from

V1 = 9 to V2 = 12

(V2-V1)|V1|×100

=(12−9)|9|×100

=3/9×100

=0.333333×100

=33.33%

greatest common factor = 4x

What is GCF?

The biggest positive integer m that divides both x and y is the GCF of two or more non-zero integers, x, and y. The GCF stands for greatest common factor. In this case, greatest can be changed to highest, and factor to divisor. The highest common factor is often referred to as the biggest common factor, highest common factor, or highest common divisor (GCD).

[tex]64xyz=2^{6}*x*y*z\\ 36xy=2^{2}*3^{2} *x*y\\24x=2^{3}*3*x[/tex]

greatest common factor = [tex]2^{2} *x[/tex]

greatest common factor = 4x

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A type of statistical hypothesis known as a "null hypothesis" makes the case that a given set of observations does not have any statistical significance.

Using sample data, hypothesis testing is used to determine a hypothesis's credibility. It is represented as H0, and it is sometimes referred to as the "null."

Given; The average thickness and standard deviation of a sample of 50 eyeglass lens samples are 3.05 millimeters and.34 millimeters, respectively.

Such lenses should have a true average thickness of 3.20 mm. Utilizing a =.05

False hypothesis H0: Alternative hypothesis: mu1= mu2 HA: 'mu1' and 'ne'

Sample Size 50 Sample Mean 3.05 Sample Standard Deviation 0.34 Intermediate Calculations Standard Error of the Mean 0.0481 Degrees of Freedom 49 t Test Statistic -3.1196 Two-Tail Test Lower Critical Value -2.0096 Upper Critical Value 2.0096 p-Value 0.0030 Reject the null hypothesis

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When the area of a figure is enlarged by a scale factor of 3, then the area of the figure will be three times of the original area of the figure.

Here, the area of the figure is enlarged by a scale factor of 3

The scale factor is defined as the ratio between the scales of the original object or measurement and the new measurement or object

When the scale factor is greater than 1 the size of the new figure will increase and if the scale factor is less than 1 size of the new figure decreases

Here scale factor is 3, so the area of the figure is increased by three times

Therefore, the the area of the new figure will enlarged by three time

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Answer: B.83

Step-by-step explanation:

Answer: B.83

Step-by-step explanation:

The number 2,158 is called the numerator or dividend, and the number 26 is called the denominator or divisor.

The quotient of 2,158 and 26, the ratio of 2,158 and 26, as well as the fraction of 2,158 and 26 all mean (almost) the same:

2,158 divided by 26, often written as 2158/26. 2,158 divided by 26 = 83

The result of 2158/26 is an integer, which is a number that can be written without decimal places.

   2158 divided by 26 in decimal = 83

   2158 divided by 26 in fraction = 2158/26

   2158 divided by 26 in percentage = 8300%

By using the concept of division, it can be calculated that-

29 [tex]\div[/tex] 5123 = 0.00566

What is division?

Division is the process by which value of single unit can be calculated from the value of multiple unit.

The number to be divided is known as dividend, the number by which the dividend is divided is the divisor, the result obtained is the quotient and the remaining part is the remainder.

There is a well known formula for division

Divisor x Quotient + Remainder = Dividend.

Here,

29 divided 5123 means

29 [tex]\div[/tex] 5123

Now,

29 [tex]\div[/tex] 5123 = 0.00566

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Best-fit values

Slope

Y-intercept

X-intercept

1/Slope

0.6000 ± 0.1155

4.000 ± 0.6633

-6.667

1.667

95% Confidence Intervals

Slope

Y-intercept

X-intercept

0.2326 to 0.9674

1.889 to 6.111

-25.31 to -2.028

Goodness of Fit

R square

Sy.x

0.9000

0.7303

Is slope significantly non-zero?

F

DFn,DFd

P Value

Deviation from horizontal?

27.00

1,3

0.0138

Significant

Data

Number of XY pairs

Equation

5

Y = 0.6000*X + 4.000

The polar equation for the curve is x = √3cosФ and y = √3 sinФ.

Here we have to find the polar equation of the curve.

Data given:

The equation is:

x² + y² = 3

This is an equation of a circle.

Its radius is √3 and its √center is (0,0)

To find the polar equation of a circle we use the following formula:

x = h + rcosФ

y = k + r sinФ

where (h,k) is the center of the circle which in this case is (0,0) and by substituting we get:

x = √3 cosФ

y = √3 sinФ

Therefore the polar equation is x =√3cosФ and y = √3sinФ.

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