1.44 make-up exam: in a class of 20 students, 19 of them took an exam in class and 1 student took a make-up exam the following day. the professor graded the first batch of 19 exams and found an average score of 79 points with a standard deviation of 7.3 points. the student who took the make-up the following day scored 60 points on the exam.

Answer:

Two shapes are congruent if their corresponding sides and corresponding angles are congruent.

Step-by-step explanation:

This is the definition of congruency.

the inequality to determine if a child's height satisfies the regulation is:

30in < h < 50 in.

Here we know that the allowed height of the child can be any value between 30 inches and 50 inches (not included, so we need to use the symbols > and <)

So, if we define h as the height, then h must be larger than 30 inches, so we can wrte:

h > 30 in

And h must be smaller than 50 inches, then:

h < 50 in.

If we write these two inequalities as one, we get:

30in < h < 50 in.

That is the inequality to determine if a child's height satisfies the regulation.

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Answer:

21 hours

Step-by-step explanation:

If he worked 2/3 at home you need to divide 31.5 by 3 = 10.5

Then multiply by 2 = 21

Hope this helps! Have a great day :)

Charlotte traveled in 414.44 feet during the time when she looks down at her phone and takes her eyes off the road for 4.06 s.

The first step is to convert miles per hour to feet per second.

(69.6 mi/hr)* (5280 feet/mi)*(1 hr/3600 sec) = 102.08 feet/sec

We know that,

Speed = [tex]\frac{Distance}{Time}[/tex]

Here, we have given,

Time = 4.06 s

Speed (feet/sec) = 102.08 feet/sec

We need to find, the distance charlotte traveled in feet during the time when she looks down at her phone and takes her eyes off the road for 4.06 s.

Putting the values in the formula, we get

Distance = Speed x Time

= 102.08 x 4.06

= 414.44 Feet

Hence, charlotte traveled in 414.44 feet during the time when she looks down at her phone and takes her eyes off the road for 4.06 s.

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the answer is the 0,1 because the lines all have different slopes but always start at 1.

The total amount earned when he waits 18 tables is $143

The total amount earned when he waits t tables is $35 + $6t

The equation that can be used to determine the total amount Carson earns is a linear equation. A linear equation is an equation that when drawn on a graph yields a straight line.

A linear equation increases by a constant amount. The highest power of a variable in a linear equation is 1.

The form of a linear equation is y = a + bx

Where:

Total amount earned = guaranteed wage + (tip per table x total number of tables he waits)

Total amount earned when he waits 18 tables: $35 + ($6 x 18)

$35 + $108 = $143

Total amount earned when he waits t tables: $35 + ($6 x t)

$35 + $6t

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The factors for given equation are -2/3 and -2.

Rewriting the equation firstly -

3x² + 8x + 4 = 0

ax² + bx + c = 0

Factorizing the equation as per mentioned two rules -

6 and 2 are the suitable factors for given expression -

3x² + 6x + 2x + 4 = 0

3x (x + 2) + 2(x + 2) = 0

(3x + 2) (x + 2) = 0

3x + 2 = 0

3x = -2

x = -2/3

x + 2 = 0

x = -2

So, the two factors of equation are -2/3 and -2.

To check the factors, we will keep the value of x in equation -

When x = -2/3

3x² + 8x + 4 = 0

3(-2/3)² + 8(-2/3) + 4 = 0

3(4/9) - 16/3 + 4 = 0

4/3 - 16/3 + 4 = 0

Multiplying the equation with 3/4

1 - 4 + 3 = 0

- 3 + 3 = 0

0 = 0

When x = -2

3x² + 8x + 4 = 0

3(-2)² + 8(-2) + 4 = 0

12 - 16 + 4 = 0

- 4 + 4 = 0

0 = 0

Since for both values of x, Left hand Side and Right Hand Side of equation is same, the two resultant factors are correct.

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Answer:

Area: 6[tex]x^{2}[/tex] - 8x

Perimeter: 10x - 8

Step-by-step explanation:

Area:

Multiple the 2 sides together

2x(3x -4)  Distribute the 2x

2x(3x)- 2x(4)

6[tex]x^{2}[/tex] -8x

Perimeter:

Add the four sides together

3x -4 + 3x -4 +2x + 2x  Combine like terms

10x - 8

Step-by-step explanation:

the first suspicion we get from the first terms is that the creation algorithm is a multiplication by 3.

-1/3 × 3 = -1

-1 × 3 = -3

-3 × 3 = -9

then the next term would be

-9 × 3 = -27

and the next

-27 × 3 = -81

and the 7th term, that we have already defined, would be

-81 × 3 = -243

we are correct !

so, the missing terms are

-27, -81

Answer:

that is definitaly 18

Step-by-step explanation:

i will break it down 3+3+3=9    3+3+3=9 again  9+9=18

[tex]answer[/tex]

18

Break it down: 3+3+3= 9, Another 3+3+3= 9 (3 addition in 6 places will give 18). 9+9 = 18

she needs to make 12 visits to the movie theatre to earn the rest of the 145 points and get a free movie ticket.

We are given that:

Jocelyn received 25 reward points just for signing up.

She earns 12.5 points for each visit that she makes to the movie theatre.

The free movie ticket is available when she has 170 points with her.

Points to be collected more for a free movie ticket will be:

Points = 170 points - 25 points = 145 points.

So, the number of visits she has to make to the movie theatre will be calculated with the help of division.

Number of visits = 145 points / 12.5 points

Number of visits = 11.6 visits that is 12 visits.

Therefore, she needs to make 12 visits to the movie theatre to earn the rest of the 145 points and get a free movie ticket.

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The required distance of object far from 25° and 55° are 103.71feet and 163.88feet respectively.

Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.

Given the trigonometry identity;

d=94 secθ.

If the object is sighted at an angle of  25°, then;

d=94 sec25

d = 94 × 1/cos25

d = 94 × 1.1033

d = 103.71feet

If the object is sighted at an angle of  55°, then;

d=94 sec55

d = 94 × 1/cos55

d = 94 × 1.7434

d = 163.88feet

Hence the required distance of object far from 25° and 55° are 103.71feet and 163.88feet respectively.

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Answer: 1.29

Step-by-step explanation: 2/5 = 0.4.

1/9 = 0.1111...

So, 3-2 = 1.

0.4-0.1111 = .28888889 (its repeating so you are going to have a rounded number)

3-2= 1 --- .4 - .1111 = 2.8888889

= 1.288889 (The 8's are not exact as they keep repeating)

Round up to 1.29 and it will be correct.

Hope this helped:)

When the cool rock that is rolling down the side of the volcano is compared to the mass of hot lava that is slowly flowing, the rock has 2. less thermal energy and more mechanical energy.

The mechanical energy that an object has refers to the combination of kinetic and potential energy. The rock will have more mechanical energy than the hot lava as it is moving faster.

Thermal energy on the other hand refers to how much heat/ energy is in an object. The rock is cool as opposed to the hot lava which would have more thermal energy as a result of its heat.

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Answer:

-10 and -10

Step-by-step explanation:

Can you use the same number twice?

Answer:

C. 40 times greater is the distance of Pluto from the Sun than the distance of Venus from the sun.

answer: 8 wholes and 3/4

The equation that best fits all the points on the graph is y = -2x + 3.

The line of best fit is a line that can be drawn to connect most of the points on the graph. In other words, it best fits the points.

Using a linear regression tool, input the coordinates that are on the graph including:

(-4, 10) (-2, 8) (-1, 5) (1, 3) (2, 0) (2, -3)

The formula you get for line of best fit would be:

y = -2.08564x + 3.01259

Rounding up gives:

y = -2x + 3

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Step-by-step explanation:

when you use 3 por multiply the answer is 5×

(5×)+3

Answer:

B

Step-by-step explanation:

calculate the distance between A and B using the distance formula

d = [tex]\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2 }[/tex]

with (x₁, y₁ ) = A (1, 6 ) and (x₂, y₂ ) = B (x, - 2 )

d = [tex]\sqrt{(x-1)^2+(-2-6)^2}[/tex]

   = [tex]\sqrt{(x-1)^2+(-8)^2}[/tex]

   = [tex]\sqrt{(x-1)^2+64}[/tex]

given AB = 10, then equating gives

[tex]\sqrt{(x-1)^2+64}[/tex] = 10 ( square both sides to clear the radical )

(x - 1)² + 64 = 10² = 100 ( subtract 64 from both sides )

(x - 1)² = 36 ← take square root of both sides

x - 1 = ± [tex]\sqrt{36}[/tex] = ± 6 ( add 1 to both sides )

x = 1 ± 6

then

x = 1 - 6 = - 5

x = 1 + 6 = 7

from the list then x = - 5 is a possible value

Answer: (1/14, 10/7, -13/14)

Step-by-step explanation:

3x+2y−z=82x+2z=−4x+3y=4 ==> convert this to system of equations

3x+2y−z=4

82x+2z=4

−4x+3y=4

(3x+2y−z=4)*2

6x+4y−2z=8 ==> add this equation

82x+2z=4 ==> add this equation

88x+4y=12 ==> add the top 2 equations

(−4x+3y=4)*4

-16x+12y=16

(88x+4y=12)*3   ==> multiply by 3 to get 12y

264x+12y=36

-16x+12y=16

264x-(-16x)=36-16

264x+16x=20

280x=20

280x/280=20/280

x=1/14

−4x+3y=4

−4(1/14)+3y=4

-4/14 + 3y=4

-2/7 + 3y=4

(-2/7 + 3y=4)*7 ==> multiply equation by 7 to remove fractions

-2+21y=28

21y=30

y=30/21

y=10/7

3x+2y−z=4

3(1/14)+2(10/7)−z=4

3/14 + 20/7 - z=4

(3/14 + 20/7 - z=4)*14 ==> multiply equation by 14 to remove fractions

3 + 20*14/7 - 14z=56

3 + 280/7 - 14z=56

3+40-14z=56

43-14z=56

43-43-14z=56-43

-14z=13

z=-13/14

Answer: (1/14, 10/7, -13/14)

Answer:

m + n + p = a

Step-by-step explanation:

m - a = n- p

M = a - n - p

M + n = a - p

M + n + p = a

Answer:

-10

Step-by-step explanation:

[tex]2\left(-5\right)\left(-1\right)\left(-1\right)\\(-5)(-1) = |5|\\= 2 \times 5\left(-1\right)\\2 \times 5 = 10\\10 \times |-1| = -10\\= -10[/tex]

Answer:

-10

Step-by-step explanation:

Let's solve the problem,

→ 2(-5)(-1)(-1)

→ (2 × -5) × (-1 × -1)

→ -10 × 1 = -10

Thus, the answer is -10.

Based on theword problem, the inequality of the word problem is 7/2 + 4h >=  1

Inequalities are used to represent expressions that do not have equal values i.e. unequal expression

The word problem is given as

Half of 7 added to product of h and 4 is at least 1

At least 1 means greater than or equal to 1

So, the word problem becomes

Half of 7 added to product of h and 4 is at least 1 ⇒ Half of 7 added to product of h and 4 >=  1

The product of h and 4 means 4h

So, the word problem becomes

Half of 7 added to product of h and 4 is at least 1 ⇒ Half of 7 added to 4h >=  1

Half of 7 means 7/2

So, the word problem becomes

Half of 7 added to product of h and 4 is at least 1 ⇒ 7/2 added to 4h >=  1

added to means +

So, the word problem becomes

Half of 7 added to product of h and 4 is at least 1 ⇒ 7/2 + 4h >=  1

Hence, the inequality of the word problem is 7/2 + 4h >=  1

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_what is this this is futo balis subina to amake dis_

The solution of the equation 3√2 x + 6 = 18 is 2√2.

An extraneous solution is one that results from the process of addressing the problem but is not a legitimate solution to the problem, such as the answer to an equation.

A formula known as an equation uses the equals sign (=) to express how two expressions are equal.

Consider the equation,

3√2 x + 6 = 18

Subtracting 6 from each side of the equation.

3√2 x + 6 - 6 = 18 - 6

3√2 x = 12

Dividing each side of the equation by 3.

( 3√2 x / 3 ) = ( 12/3 )

√2 x = 4

Dividing each side of the equation by √2.

( √2x/√2 ) = ( 4/√2 )

x = 2√2

Now checking the extraneous solution:

x = 2√2

[tex]3\sqrt{2}x + 6 = 18\\ 3\sqrt{2} \times 2\sqrt{2} + 6 = 18\\ 6(2) + 6 = 18\\ 18 = 18[/tex]

The solution for the equation is 2√2.

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Answer:

[tex]x = 1 + \frac{y}{2} \\ \\ x = 4 - y \\ y = 4 - x[/tex]

Step-by-step explanation:

[tex]1. \: y + 2 = 2x \\ 2. \: \frac{y + 2}{2} = x \\ 3. \: 1 + \frac{y}{2} = x \\ 4. \: x = 1 + \frac{y}{2} \\ \\ \\ 1. \: x = 4 - y \: or \: y = 4 - x[/tex]

Answer:

option 4 and option 3

Step-by-step explanation:

(3)

using the rule of exponents

[tex](a^m)^{n}[/tex] = [tex]a^{mn}[/tex] , then

[tex](x^{\frac{3}{2}) } ^{6}[/tex]

= [tex]x^{\frac{3}{2}(6) }[/tex]

= [tex]x^{9}[/tex]

(4)

using the rule of exponents/ radicals

[tex]x^{\frac{m}{n} }[/tex] = [tex]\sqrt[n]{x^m}[/tex] , then

7[tex]x^{\frac{2}{3} }[/tex]

= 7 × [tex]\sqrt[3]{x^2}[/tex]

= 7 [tex]\sqrt[3]{x^2}[/tex]

The value of x in the triangle is 100 units.

A right triangle is a triangle that has one of its angles as 90 degrees.

The triangles formed are similar, therefore, they form a ratio or proportion.

Therefore, using similarity principle of triangles,

36 / 60 = 60 / x

cross multiply

36x = 60 × 60

36x = 3600

divide both sides by 36

36x = 3600

36x / 36 = 3600 / 36

x = 100

Therefore, the value of x in the triangle is 100 units.

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Answer: 1. 0.937

2. 20.786

3. 35.001

Step-by-step explanation:

1. 0.9+0.03+0.007=

0.900+0.030+0.007=0.937

2. 20 +0.7 + 0.08 + 0.006=

20.000 +0.700 + 0.080 + 0.006=20.786

3. 35 + 0.01 - 0.009=

35.000 + 0.010 - 0.009=

35.010 - 0.009=35.001