Find the area of the circle, given that: diameter = 49 m (Take π =22 7 )
I need the answer from NCERT C7 ​
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Answer:

the answer is A (1,-1)

Step-by-step explanation:

let x-2=4x-5

3x=3

x=1

at any point y will be equal -1

The solution is :  the solution(s) to the system of equations is : B.(1,-3)

An equation is a  mathematical statement that is made up of two expressions connected by an equal sign.  In its simplest form in algebra, the definition of an equation is a mathematical statement that shows that two mathematical expressions are equal.

Given in the question two equation

Equation1

y = x² - 4

Equation2

y = 2x - 5

Substitute y with 2x-5 in equation2

x² - 4 = 2x - 5

x² - 2x + 1 = 0

(x-1)(x-1)=0

x = 1

plug value of x in any equation

y = 2(1)- 5

y = -3

Hence, The solution is :  the solution(s) to the system of equations is :

B.(1,-3)

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complete question:

find the solution(s) to the system of equations. select all that apply y=x^2 - 4 y= 2x-5 - 2 A. (-5-0) B.(1,-3)C.(-2,0)D.(2,0)

Answer: The equation in math form is \(\frac{1}{5}c\) - 9.

Step-by-step explanation:

So the givens are:

9 less than one-fifth of c

Let's put this equation in math form:

\(\frac{1}{5}c\) - 9

Hence your answer!

Answer:

a= 0

b= \(-\frac{\sqrt{42} }{12}\)

Step-by-step explanation:

We can rewrite the expression to be:

\(\frac{i\sqrt{7} }{i^{2}\sqrt{24} }\)

We then can cancel out the i and we get

\(\frac{\sqrt{7} }{\sqrt{24} i}\)

Can be rewritten as

\(\frac{\sqrt{7} }{2\sqrt{6} i}\)

We then rationalize and get

\(-\frac{\sqrt{42} }{12} i\)

Answer:

20200

Step-by-step explanation:

As you're in a hurry, I can give it later? xx

The P-value for the hypothesis test is 0.1034 .Round to two decimal places, the P-value is 0.10

To find the P-value for this hypothesis test, we need to use the sample proportion of on the road cars that are 10 years or older, which is the number of cars in the sample that are 10 years or older divided by the total number of cars in the sample. In this case, the sample proportion is \(\frac{357}{1500}= 0.238.\)

We can then use this sample proportion to calculate the P-value, which is the probability of observing a sample proportion as extreme as the one we have seen, or even more extreme, given that the null hypothesis is true. In this case, the null hypothesis states that the true proportion of on the road cars that are 10 years or older is 0.25, so we need to calculate the probability of seeing a sample proportion as low as 0.238, or lower, if the true proportion is actually 0.25.

To do this, we can use a one-sided test, since we are only interested in the probability of seeing a sample proportion lower than 0.25. We can use a normal approximation to the binomial distribution to calculate the P-value.

The standard error of the sample proportion is given by the formula:

SE \(= \sqrt\frac {p \ * (1 - p)}{n}\)

Where p is the null hypothesis value for the proportion (0.25 in this case) and n is the sample size (1500 in this case). Plugging these values into the formula gives us:

SE = \(\sqrt\frac{0.25 * (1 - 0.25)}{1500}= 0.0158\)

The z-score for the sample proportion is then given by the formula:

z =\(\frac{ (p - p_0)}{SE}\)

Where p is the sample proportion (0.238 in this case) and p0 is the null hypothesis value for the proportion (0.25 in this case). Plugging these values into the formula gives us:

\(z = \frac{(0.238 - 0.25)}{0.0158} = -1.27\)

We can then use the z-score to calculate the P-value. Since we are performing a one-sided test, we only need to consider the probability of seeing a sample proportion lower than 0.25. This is given by the area under the normal curve to the left of the z-score. We can use a z-table or a calculator to find this probability.

The probability for a z-score of -1.27 is about 0.1034. This is the P-value for the hypothesis test.

Round to two decimal places, the P-value is 0.10

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Answer:

Current worth of stock is $141.538

Current worth of stock rounded to nearest cent is $142

Step-by-step explanation:

price of stocks= $141

percentage increase in price of stocks = 1.8% of initial price of stock

dollar value increase in price of stocks = 1.8% of initial price of stock

increase in price of stocks = 1.8% of  $141

increase in price of stocks = 1.8/100 * $141 =$ 253.8/100 = $2.538

Current worth of stock = initial price of stock+increase in price of stocks

substituting the value of initial price of stock and increase in price of stocks we have

Current worth of stock =$141 + $2.538 = $141.538

Since we need to find stock worth now, to nearest cent, as after decimal there .5 and any value greater than or equal to .5 is rounded to one then after rounding,  $141.538 becomes  $142

Answer:

c

Step-by-step explanation:

100% sure and correct :) ❤️

Answer:

1

Step-by-step explanation:

The maximum of f(x) = sin(x) is 1. The sine function has a range of -1 ≤ sin(x) ≤ 1. The sine function oscillates between -1 and 1, reaching a maximum of 1 when x = π/2 and a minimum of -1 when x = -π/2.  If you look at a graph of

y = sin(x) you can see this.  

Answer: The Maximum Value of f(x)=sin(x) is 1 , when x=90°.

Step-by-step explanation:

Property of Sine function:

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Angle WZY is 50 degrees, angle WZX is also 50 degrees, and angle XZW is 160 degrees.

What is the inscribed angle theorem?

The inscribed angle theorem, also known as the central angle theorem, states that an angle formed by two chords in a circle is half the measure of the arc they intersect, or subtend, inside the circle.

To find all other angles in the circle with quadrilateral WXYZ inscribed in it and WY going through the center Q:

Since WY goes through the center, angle WYZ and angle WXY are both right angles (90 degrees)

By the inscribed angle theorem, angle WZY is equal to half the measure of the arc WX.

Since angle XYZ is given as 50 degrees, the measure of the arc WX is 2 times 50 degrees, which is 100 degrees.

Therefore, angle WZY is 50 degrees.

By the same logic, angle WZX is also 50 degrees.

Since angles WYZ and WXY are right angles, angles XZY and WZX are also right angles.

Finally, we can find angle WZY + angle XYZ + angle XZW + angle WZX = 360 degrees (sum of angles in a quadrilateral), and we can solve for angle XZW which is 160 degrees.

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Answer:

\(\log_48\)

Step-by-step explanation:

\(\log_432-\log_4(4) = \log_4(\frac{32}{4} )=\log_48\)

Answer:

Step-by-step explanation:

The function f(x) = 10x + 50 models the total amount he has saved after 'x' months.

The domain is x-values, which is the number of the months.

x can only be zero or positive integers (since you can save after the month is complete), therefore the last option is correct.

a. The area of the rectangle: 16 units²

b. The area of the triangle on the left: 6 units²

c. Area of the triangle on the right: 10 units²

d. Area of the figure: 32 units²

a. l = 4 units

w = 4 units

Area of the rectangle = (4)(4) = 16 units²

b. b = 3 units

h = 4 units

Area of the triangle on the left = 1/2(3)(4) = 6 units²

c. b = 5 units

h = 4 units

Area of the triangle on the right = 1/2(5)(4) = 10 units²

d. Area of the figure = 16 + 6 + 10 = 32 units²

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Answer:

a: 16

b: 6

c:10

d: 32

Step-by-step explanation:

explained already <3

Answer:

It's option 3

Step-by-step explanation:

Answer:

I think it is option 3 hopes that helps

Divide the option with 4 so that you can get the equivalent ratio to 5:9 .

Answer:

3s

Step-by-step explanation:

the answer is 3 seconds

Answer:

Yes.

Step-by-step explanation:

Because 12:8=12/8=3/2.

And 18:12=18/12=3/2.

On solving the provided question, we can say that -  here in graph we have on solving equation  \(2x^2+ 9y^2 \\\) = \(8 + 9 = 17\)

An equation is a formula in mathematics that joins two statements with the equal symbol = to represent equality. The definition of an equation in algebra is a mathematical statement proving the equality of two mathematical expressions. In the equation 3x + 5 = 14, for instance, the terms 3x + 5 and 14 are separated by an equal sign. The link between two phrases on either side of a letter is expressed mathematically. There is often only one variable, which is also the symbol. instance: 2x - 4 Equals 2.

here,

from graph, x= 2

y = 1

\(2x^2+ 9y^2 \\\)

\(8 + 9 = 17\)

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Answer:

The equation that can be used to show the money she has in her account after x months is A. 100 + 50x = y.

Step-by-step explanation:

How much money Alyson credited when she opened the saving account: $100

After opening saving account, she saves every month: $50

After x months, the total amount she credited every month would be: 50x

Let’s assume the total amount she has in her account after x months is y.

So, y will be equals to 100 + 50x.

Because she already had $100 in her account at the time of opening the saving account and after x months, $50x will be added.

Hence, the correct linear equation that can be used here is 100 + 50x = y.

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9514 1404 393

Answer:

  (d)  $850.45

Step-by-step explanation:

The balance in account I is given by ...

  A = P(1 +rt) . . . . principal P invested at annual rate r for t years

  A = 350(1 +0.045×3) = 397.25

__

The balance in account II is given by ...

  A = P(1 +r)^t

  A = 400(1 +0.0425)^3 ≈ 453.20

__

The total amount in the two accounts is

  $397.25 +453.20 = $850.45

Answer: B. 105 mph

Step-by-step explanation:

Answer:

trust me (D) is the correct answer can you mark b please thank you

Step-by-step explanation:

I hope it help you lot see you around

Answer:

2/3 x 45 < 4/5 x 45

Step-by-step explanation:

Rearrange from smallest to largest:

2/3 x 45 < 4/5 x 45

I hope this helps!

Answer:

QUALITATIVE DATA-type of data states that every value in the set is a number.

Step-by-step explanation:

QUALITATIVE DATA-type of data states that every value in the set is a number.

Answer:

QUALITATIVE DATA-type of data states that every value in the set is a number.

Answer:

600 miles the costs will be the same.

Explanation:

The first plan has an initial fee of $43.96 and costs an additional $0.14 per

mile driven.

C= 43.96 + 0.14x

The second plan has an initial fee of $55.96 and costs an additional $0.12 per mile driven.

C= 55.96+0.12x

equate them to get the same cost

43.96 +0.14x= 55.96+0.12x

0.02x= 55.96- 43.96

0.02x = 12

1 / 0.02 = 50  

12 x 50 =  600

x = 600 miles.

Driving for 600 miles, the cost will be same

Answer:

50 degrees

Step-by-step explanation:

For a RIGHT triangle   tan A = opposite side / adjacent side

tan A = 12/10

arctan ( tan A) = A = arctan (12/10) = 50.19 degrees

Answer:1 11/12

Step-by-step explanation:

Answer:

x = -4.5

Step-by-step explanation:

\(20 = 2 - 4x\)

\(18 = - 4x\)

\( - 4.5 = x\)

Answer:

Each gets 14 cards.

Step-by-step explanation:

7*8=56

56 Is the total amount of cards

56/4 equals 14

We divide 56 by 4 since 4 is the total number of friends.