8. What angle do the hour and minute hands of a clock form when it is exactly 9.00p.m.?​

Answer:

it is the first one klick that one

Step-by-step explanation:

Step-by-step explanation:

-(-4)²+7(-2)⁴-2(-3)³

=16+7(16)-2(-27)

=15+112+54

=181

The evaluation of the expression is 150.

In mathematics, expression is the combination of variables with the application of operations and prescribed rules. It might take the shape of an equation, some numbers, etc.

The given expression is:

-a² + 7b⁴  -2c³

Substituting, a= -4 b= -2 and c=-3

-a² + 7b⁴  -2c³

= -(-4)² + 7(-2)⁴  -2(-3)³

= -16 + 7 x 16 + 54

= 150

Therefore, the value of the expression is 150.

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Answer:

\(0.2\)

Step-by-step explanation:

... .. ... .. .

The percentage change in the number of burglaries over the two-year period is 35% .

The change in burglaries over the two-year period to have  a 40% increase is 6.7%.

Let's assume that the annual number of burglaries in 2011 is 1000. After the 50% increase in 2012, the number of burglaries would be: 1000(1.50) = 1500.

The number of burglaries after the 10% reduction in 2013 would be: 1500(.90) = 1350

The change in burglaries over the two-year period = (1350 / 100) - 1 = 35%

In order to determine how much burglaries would have to reduce in order to have a 40% change in burglaries, this formula would be used

(x - 1000) / 1000 = 0.40

x - 1000 = 400

x = 1400

The change in burglaries over the two-year period to have  a 40% increase = (1400 / 1500) - 1 = 6.7%

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Answer:156

Step-by-step explanation:

Answer:

x = 21

Step-by-step explanation:

add the two equations together which would would equal 180 because they are mirrored

3x + 12 +5x =180

8x + 12 = 180

8x = 168

x = 21

Answer:

\(Solution,\\f(x+3)=f(x)+f(3).......(1)\\Put~x=0~in~eq^n~(1),\\f(0+3)=f(0)+f(3)\\or, f(3)=f(0)+f(3)\\or, f(0)=0.........(2)\\Now,\\Put~x=-3~in~eq^n(1),\\f(-3+3)=f(-3)+f(3)\\or, f(0)=f(-3)+f(3)\\From~eq^n(2),\\0 = f(-3)+f(3)\\or, f(-3)=-f(3)~proved\)

Answer:

The answer is

Step-by-step explanation:

The midpoint M of two endpoints of a line segment can be found by using the formula

\(M = ( \frac{x1 + x2}{2} , \: \frac{y1 + y2}{2} )\)

where

(x1 , y1) and (x2 , y2) are the points

From the question the points are

A(6,7) and B(-5,-9)

The midpoint is

\(M = ( \frac{6 - 5}{2} \: , \: \frac{7 - 9}{2} ) \\ = ( \frac{1}{2} \: , \: - \frac{2}{2} )\)

We have the final answer as

\(( \frac{1}{2} \: , \: - 1)\)

Hope this helps you

Answer:  2.5

Step-by-step explanation:

Answer:

it always add's one block

Step-by-step explanation:

3 blocks add 1 block every time there is a new pattern.

Hello !

you made a typo with the c^-2 because otherwise it does not make a round result

\(a^{2} *b^{2} *c^{2} \\\\= 1^{2} *2^{2}* (-3)^{2} \\\\= 1*4*9\\\\\boxed{= 36}\)

Answer:

c

Step-by-step explanation:

it's a property of powers, when the base is the same (-5) , you need to

sum the powers when both terms are multiplyng

subtract the powers when both terms are dividing (numerator power minus denominator power, in that order)

Answer: A

Step-by-step explanation:

The first thing we need to do is to make sure our equation is in standard form. The given equation is not in standard form.

3x²-2x=0

Now that the equation is in standard form, we can find our A, B, C to see which quadratic equation is correct.

A=3

B=-2

C=0

We can automatically eliminate D because the first value is -3 when it is supposed to be -(-2). Also, the denominator is supposed to be 2a. We know that A=3. The denominator should be 2(3), not 2(-2).

Next, we can eliminate B and C. For the 4ac, we know it has to be 4(3)(0) because A=3 and C=0. B and C have given 4(3)(2) and 4(3)(1), respectively. This does not match A=3 and C=0.

Therefore, A is the correct answer.

9 shirts, 5 pants, 4 pairs.

4 Combinations since the lowest of them is 4.Answer:

Step-by-step explanation:

9 shirts, 5 pants, 4 pairs.

4 Combinations since the lowest of them is 4.

The total bill with the tip amount is $29.50

In this question, we have the following parameters

Tip amount = $4.50

Tip = 18% of the total bill

This means that

Total bill = Tip/18%

Substitute the known values in the above equation, so, we have the following representation

Total bill = $4.50/18%

Evaluate the quotient

Total bill = $25

The bill inclusive of the tip is then calculated as

Overall bill = Total bill + Tip amount

Substitute the known values in the above equation, so, we have the following representation

Overall bill = 25 + 4.50

Evaluate

Overall bill = 29.50

Hence, the total is $29.50

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Absolute value of 6.4 is 6.4 itself.

A horizontal line with evenly spaced numerical increments is called a number line. How the number on the line can be answered depends on the numbers present. The use of the number is determined by the question that if corresponds to, such as when graphing a point.

Since, Absolute value describes the distance from zero that a number is on the number line, without considering direction. The absolute value of a number is never negative.

Thus, the absolute value of a positive number is always positive

Therefore, the Absolute value of 6.4 is 6.4.

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Answer:

9

Step-by-step explanation:

first add 4

3x=27

divide 3

x=9

Answer:

= 9

Step-by-step explanation:

3 − 4 = 2 3

Add 4 to both sides of the equation:

3 − 4 + 4 = 2 3 + 4

Simplify:

3=27

Divide both sides of the equation by the same term:

3/3=27/3

Cancel terms that are in both the numerator and denominator:

=27/3

Divide the numbers:

x=9

Done!

Answer:

1-5

3-7

8-4

2-6

6-3

3-7

Step-by-step explanation:

Step-by-step explanation:

p=n+ 2/d

Multiply both sides of the equation by d.

pd=dn+2

Swap sides so that all variable terms are on the left hand side.

dn+2=pd

Subtract 2 from both sides.

dn=pd−2

The equation is in standard form.

dn=dp−2

Divide both sides by d.

dn = dp−2/d

Dividing by d undoes the multiplication by d.

n= dp−2/d

Divide pd−2 by d.

n=(p−2)/d

Answer:

8π

Step-by-step explanation:

\(\frac{x}{4} =2 \pi\\x=2 \pi \times 4=8 \pi\)

The age of Lance and Chad are 7 years and 20 years respectively.

An equation is an expression that shows the relationship between two or more numbers and variables.

Let age of Lance's is  = L

Age of Chad's = C

Given that The sum of Lance's and Chad's ages is 27 years. Chad is 6 years younger than twice Lance's age.

The system of equations that represents this situation is;

L + c = 27

C - 6 = 2L

2L - c = -6------ (1)

Therefore,

⇒ ( 2L - c ) + (L + c) = 21

⇒ 3L = 21------- (2)

L = 7

C = 20

Therefore the age of each person;

7 years and 20 years

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Answer:

16 deliveries

Step-by-step explanation:

238 ≤ 10d + 78

160 ≤ 10d

16 ≤ d

Thus, he needs to make at least 16 deliveries to make at least $238 in one day.  Any less than 16 deliveries will cause him to fall short of his goal and any more than 16 deliveries will cause him to exceed his goal.

Thus, the solution set for the cost of each notebook that can be bought by George is:  (0 ≤ x ≤ 6).

A linear equation is a one-variable equation of the a straight line. The variable only has one power, which is 1. Simple algebraic operations are used to solve linear equations in one variable, which can have the form ax+b=0.

Given that:

So, the linear equation follows

Amount for 4 notebooks + Left amount  = total amount

4*x + 12 ≤ 36

4x ≤ 36 - 12

4x ≤ 24

x ≤ 24/4

x ≤ 6

So, (0 ≤ x ≤ 6)

Thus, the solution set for the cost of each notebook that can be bought by George is:  (0 ≤ x ≤ 6).

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Answer:

here lets make it easy for you

An expression is a problem WITHOUT an Equal sign

An equation is a problem WITH an Equal sign

Answer:

Equation: 2nd, 5th, and 6th

Expression: 1st, 3rd, and 4th

Step-by-step explanation:

Equations need to have the equal sign and expressions don't have one.

Answer: x=3\(\sqrt{2\). y=3\(\sqrt{2\)

Step-by-step explanation: This is a 45-45-90 triangle. Both of the legs, x and y, are congruent. To find the length of the legs, divide 6, the hypotenuse, by \(\sqrt{2\). 6/\(\sqrt{2\)=3\(\sqrt{2\).

Answer:

The possible number of combination to select two positions from 9 people is 72.

Answer:

v = -5/9

Step-by-step explanation:

-4(v + 1) = 6v - 8 + 2(4v + 7)

-4v -4 = 6v - 8 + 8v + 14

add 4 to both sides:

-4v -4 + 4 = 6v - 8 + 8v + 14 + 4

-4v = 6v + 8v + 10

-4v = 14v + 10

subtract 14v from both sides:

-4v - 14v = 14v + 10 - 14v

-18v = 10

divide both sides by by -18:

-18v/-18 = 10/-18

v = -5/9

Answer:

v = -5/9 or -0.55

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

−4(v + 1) = 6v − 8 + 2(4v+7)

(−4)(v) + (−4)(1) = 6v + −8 + (2)(4v) + (2)(7)(Distribute)

−4v + −4 = 6v + −8 + 8v + 14

−4v − 4 = (6v + 8v) + (−8 + 14)(Combine Like Terms)

−4v − 4 = 14v + 6

−4v − 4 = 14v + 6

Step 2: Subtract 14v from both sides.

−4v − 4 − 14v = 14v + 6 − 14v

−18v − 4 = 6

Step 3: Add 4 to both sides.

−18v − 4 + 4 = 6 + 4

−18v = 10

Step 4: Divide both sides by -18

-18v / 18 = 10/-18

v = -5/9 or -0.55

Answer:

0.62 = 0.62 × 100/100 = (0.62 × 100)/100 = 62/100 = 62%;

In other words:

1) Multiply that number by 100.

2) Add the percent sign % to it.

Answer:

62%

Step-by-step explanation:

You would take the decimal and move it to the right two spaces then add the percent sign in replace of the decimal.

.62 → 6.2 → 62. → 62%

Hope this helps!