Find the length of a segment ab but a= -7 and b=9

Answer:

Answer no. 4

Step-by-step explanation:

1.67 x 10^3 = 1670

16.7 x 10^3 = 16700

those number are clearly the biggest in their categories, so answers 1 and 2 are not worth further consideration. Also note that all the numbers are the same in every answer except 1.67 x 10^3 or 16.7 x 10^3, so the 16.7 might be an error. Fortunately it does not change the answer.

Let's choose between answers 3 and 4. We start with easy numbers:

4^2 = 16

50/3 = 16.6666...

So 50/3 must come after 4^2.

We're left with answer 4.

We can also convert everything to decimal:

[tex]15.75\\\sqrt{250} = 15.8113883...\\4^2 = 16\\50/3 = 16.666666....\\16.7 \cdot 10^3 = 16700\\1.67 \cdot 10^3 = 1670[/tex]

from which we can order conventionally

Two triangles with three pairs of corresponding congruent angles are congruent: Always TRUE

So, the statement says that:

Therefore, "two triangles with three pairs of corresponding congruent angles are congruent" is Always TRUE.

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Step-by-step explanation:

you don't know the Pythagoras formula yet ?

this is something you need to remember for life. this you will encounter everywhere (not just in school) :

c² = a² + b²

in a right-angled triangle c is the Hypotenuse (the side opposite of the 90° angle). a and b are the legs of the triangle.

4.

the legs of this right-angled triangle are the pole and the ground distance to the cable fixture on the ground.

the cable itself is the Hypotenuse (as the right angle is the angle between the pole and the ground distance).

so,

cable² = 8² + 6² = 64 + 36 = 100

cable = sqrt(100) = 10 m

5.

here we have a right-angled triangle with the direct distance between the points being the Hypotenuse, and the x and y coordinate differences are the legs.

so, we have

distance² = (3 - -3)² + (0 - -1)² = 6² + 1² = 36 + 1 = 37

distance = sqrt(37)

please note that since we are squaring, the direction of the differences and their signs do not matter. the square will turn positive and negative distances into positive numbers.

The distance the slower and faster car travelled are 360 km and 432 km respectively.

Two cars start at the same time from two towns 792 kilometres apart and meet in 9 hours.

One car can travel 8 km faster than the other car.

let

x = speed of the slower car

x + 8 = speed of the faster car

The cars meet in 9 hours and both cover a distance of 792 km.

Therefore,

speed = distance / time

distance = time × speed

Hence,

9x + 9(x + 8) = 792

9x + 9x + 72 = 792

18x = 792 - 72

18x = 720

divide both sides by 18

x = 720 / 18

x = 40

Therefore,

speed of the slower car = 40 km per hour

speed of the faster car = 48 km per hour

Hence,

how far the slower car go(distance) = 40 × 9 = 360 km

how far the faster car go(distance) = 48 × 9 = 432 km

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Answer: 7/15

Step-by-step explanation:

Answer: 0.71

Step-by-step explanation:

Older than 50: 50-60 and >=60

50-60 : 90 customers

>=60 : 52 customers

90+52=142 customers

Younger than 30: <20 and 20-30

<20 : 67 customers

20-30: 100 customers

67+100=167 customers

142+167=309 customers are either older than 50 or younger than 30

Total customers:

67+100+55+72+90+52=

167+127+142=

294+142=434 customers

309/434=0.71

Answer:

============================

The shaded section is the difference of sector OAB and triangle OAC.

Use Pythagorean

Answer:

d) (-2)⁶/(-2)⁴

Step-by-step explanation:

Given that,

→ (-2)⁴/(-2)²

→ 16/4 = 4

Then the equivalent expression is,

→ (-2)⁶/(-2)⁴

→ 64/16 = 4

Hence, option (d) is correct.

The solution of the given equation 3/x = 5 is at x = 3/5.

According to the given question.

We have an equation 3/x = 5.

As we know that, an equation is a condition on a variable such that two expressions in the variable should have equal value.

Here, we have to find the solution of the equation 3/x = 5 is given by

3/x = 5

⇒ 3 = 5x        (multiplying x both the sides)

⇒ 3/5 = x       (dividing both the sides by 5)

⇒ x = 3/5

Hence, the solution of the given equation 3/x = 5 is at x = 3/5.

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Answer:

The square root of 48 to the nearest tenth is 6.9

Answer: 12

Step-by-step explanation: You're welcomed

The quotient of the decimal numbers 57.15 and 4.5 is 12.7.

The given decimal numbers are 57.15 and 4.5.

In arithmetic, a quotient is a quantity produced by the division of two numbers. The quotient has widespread use throughout mathematics, and is commonly referred to as the integer part of a division, or as a fraction or a ratio.

Here, 57.15/4.5

4.5|57.15|12.7

     57.15
  _______
       0

Therefore, the quotient of the decimal numbers 57.15 and 4.5 is 12.7.

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Step-by-step explanation:

well, because the 2 lines are intersecting each other at a right angle (90°), the complete angle CBD is 90°.

that means the sum of the sub-angles must be 90° :

DBE + CBE = 90

2x - 1 + 5x - 42 = 90

7x = 133

x = 19

Answer:

[tex]\mathrm {\dfrac{1}{5} \; or\; 0.2 \; in \; decimal}[/tex]

Step-by-step explanation:

We are asked to find [tex]\dfrac{6.4}{34}[/tex]

Multiply numerator and denominator by 10 to convert them to whole numbers

[tex]\dfrac{6.8}{34} = \dfrac{6.8 \times 10}{34 \times 10} = \dfrac{68}{34 \times 10}\\\\= \dfrac{68}{34} \times \dfrac{1}{10}\\\\= 2 \times \dfrac{1}{10}\\\\= \dfrac{2}{10}\\\\= \dfrac{1}{5}\\\\= 0.2[/tex]

Given that ∠1 and ∠2 are supplementary, the measure of ∠1 is 79 degree.

Hence, option D)79° is the correct answer.

Supplementary angles refer to the pair of angles that sum up to 180 degree.

Given the data in the question;

Since ∠1 and ∠2 supplementary angles, they will  sum up to 180 degree.

∠1 + ∠2 = 180°

(2y + 9) + (3y - 4) = 180

Solve for y

2y + 9 + 3y - 4 = 180

5y + 5 = 180

5y = 180 - 5

5y = 175

y = 175/5

y = 35

Hence, the measure of ∠1 will be;

∠1 = 2y + 9

∠1 = 2(35) + 9

∠1 = 70 + 9

∠1 = 79°

Given that ∠1 and ∠2 are supplementary, the measure of ∠1 is 79 degree.

Hence, option D)79° is the correct answer.

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Answer:

625,3125,15625

Step-by-step explanation:

Because it is ×5, so 125×5=625, 625×5=3125...

The expressions that can be used to determine the area of the rectangle are:

12 x 7

7 . 10 + 7 . 2

The expressions that can be used to determine the perimeter of the rectangle are:

2 x (12 + 7)

7 + 12 + 7 + 12

2 . 7 + 2 . 12

The expression that cannot be used to find either the area or the perimeter of a rectangle is: 7 + 12

A rectangle is a 2-dimensional quadrilateral with four right angles that sum up to 360 degrees. A rectangle has two diagonals which bisect each other at right angles.

The area of a rectangle is the product of the width and the length.

Area of a rectangle = length x width

12 x 7 = 84 units²

7 . 10 + 7 . 2

70 + 14 = 84

The perimeter of a rectangle is the distance round the rectangle.

Perimeter of a rectangle = 2 x (length + width)

2 x (12 + 7)

2 x 19 = 38 units

7 + 12 + 7 + 12 = 38

2 . 7 + 2 . 12

14 + 24 = 38

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Triangle angle sum property states that the sum of a triangle's interior angles is 180°. parallel to the given triangle's side BC. As a result, the sum of a triangle's interior angles is 180°.

Triangle angle sum property states that the sum of a triangle's interior angles is 180°. parallel to the given triangle's side BC. As a result, the sum of a triangle's interior angles is 180°.

The Triangle Angle-Sum Theorem and the Definition of a Linear Pair serve as the foundation for this proof. Create two equations based on the diagram, one for each of these relationships. When two angles form a linear pair, we know they are supplementary and add up to 180 degrees. At this point in the proof, you can set the two equations equal to each other and simplify to obtain the proof's final conclusion.

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Answer:

C

Step-by-step explanation:

The simplification of the expression 3(x + 3y) - 5(x -y) is  -2x + 14y.

According to the given question.

We have an expression

3(x + 3y) -5(x -y)

As we know that, the simplification of an expression means to write an equivalent expression which contains no similar terms.

Therefore, the simplificantion of the expression  3(x + 3y) - 5(x -y) is given by

3(x + 3y) - 5(x -y)

= 3x + 9y - 5x + 5y     (by distributive rule)

= 3x - 5x + 9y + 5y

= -2x + 14y                    (adding and subtracting the like terms)

Hence, the simplification of the expression 3(x + 3y) - 5(x -y) is  -2x + 14y.

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Answer: 1) x=20°      2) x=50°

Step-by-step explanation:

1)

[tex]x+20+x+30=90\\2x+50=90\\2x+50-50=90-0\\2x=40\\Divide\ both\ parts\ of \ the\ equation\ by\ 2:\\x=20^0[/tex]

2)

The sum of adjacent angles is always 180 degrees.

[tex]x+80+x=180\\2x+80=180\\2x+80-80=180-80\\2x=100\\Divide\ both \ parts\ of\ the\ equation\ by\ 2:\\x=50^0[/tex]

Answer: 140°

Step-by-step explanation:

x = 11

5 x 11 = 55

55 - 15 = 40

The 5x-15 = 40°

tHe 3x+7 is opposite, so it also equals 40°

40 + 40 = 80°

360° - 80° = 280

280 divided by 2 = 140°

The value of the expression (g ₀ f) (1/2) is 15/4

In this question, we have been given two functions f(x) = x² + 1 and             g(x) = 3x.

We need to evaluate an expression. (g ₀ f) (1/2)

We know that the composite function is a function where the output of one function becomes the input of another function.

First we find the composite function (g ₀ f) (x)

(g ₀ f) (x)

= g(f(x))

= 3(f(x))

= 3 (x² + 1 )

= 3x² + 3

So, (g ₀ f) (x) = 3x² + 3

Now, we find the value (g ₀ f) (1/2)

(g ₀ f) (1/2)

= 3(1/2)² + 3

= 3(1/4) + 3

= 3/4 + 3

= 15/4

Therefore, the value of the expression (g ₀ f) (1/2) is 15/4

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Answer:

base :6 units

height:4units

area of a triangle: 1/2 ×b×h

1/2× 6×4=12

12sqaure units should be the area

Based on the fact that Jessica wants to attach ribbons around her wardrobe, the amount more of ribbons that she needs is 5/6 meters of ribbons

Find out the distance wound Jessica's wardrobe:

= 1¹/₃ + ²/₃ + 1¹/₃ + ²/₃

= 58 / 12

= 4 ⁵/₆ meters

The amount more that Jessica needs is therefore:

= 4 ⁵/₆ - 4

= 5/6 meters of ribbons

In conclusion, Jessica needs 5/6 meters of ribbons

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Answer:

A prime number has exactly two factors, 1 and itself. For example, 13 is a prime number because the only factors of 13 are 1 and 13

if this is what you are looking for..

Answer:

114

Step-by-step explanation:

If you use the probability of statistics equation ax+bx+cx=x^3 and plugin the numbers you will get 114 as your answer.

Answer:

a^2+2ab+b^2

Step-by-step explanation:

(a+b)^2

(a+b)(a+b)

a(a+b)+b(a+b)

(a^2+ab)+(ab+b^2)

a^2+2ab+b^2

The arithmetic mean a n of the given terms  a n₋₁ =100, an ₋₁ =140 is

a (n) = 20.

a n₋₁ =100, an ₋₁ =140

a (n) = (140-100)/2

a (n) = 20

The arithmetic mean is the most straightforward and widely used method of calculating a mean or average. It only requires adding up a group of figures, then dividing the result by the entire amount of figures in the series. Consider the numbers 34, 44, 56, and 78 as an example. It totals 212.

The mean or arithmetic average are other names for the arithmetic mean. It is determined by adding up each number in a particular data set, then dividing the result by the overall number of items in the data set. For uniformly distributed integers, the middle number serves as the arithmetic mean (AM).

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An unbiased statistic is one in which the average value of the statistic is equal to the population parameter.

Unbiased Statistic/estimator is defined as the accurate statistic that is used in approximation a population parameter.

In the above statement the word "accurate" means that it should be neither greater than nor less than the population parameter.

If the average value is less than  the population parameter  or greater than the population parameter then the statistic will be termed as "biased".

Therefore , An unbiased statistic is one in which the average value of the statistic is equal to the population parameter.

The correct option is (d) equal to.

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