Please help me with the question below

Answer:

[tex] \boxed{ \bold{ \huge{ { \sf{ - 13 {x}^{2} - 10x + 14}}}}}[/tex]

Step-by-step explanation:

[tex] \sf{ - 9x - x - 7 {x}^{2} - 6 {x}^{2} + 8 + 6}[/tex]

Collect like terms

⇒[tex] \sf{ - 7 {x}^{2} - 6 {x}^{2} - 9x - x + 8 + 6}[/tex]

⇒[tex] \sf{ - 13 {x}^{2} - 10x + 8 + 6}[/tex]

Add the numbers

⇒[tex] \sf{ - 13 {x}^{2} - 10x + 14}[/tex]

Hope I helped!

Best regards!!

Answer:

Step-by-step explanation:

SI units are the modern form of the metric system of measurement

The SI units are metric system of measurement

The International System of Units comprises a coherent system of units of measurement starting with seven base units. The units and their physical quantities are the second for time, the meter (sometimes spelled meter) for length or distance, the kilogram for mass, the ampere for electric current, the kelvin for thermodynamic temperature, the mole for amount of substance, and the candela for luminous intensity. It is represented as SI

Given data ,

Let the units of measurements be represented as A

Now , the value of A is

Seven base units - the second (symbol s, the unit of time), the metre (m, the unit of length), the kilogramme (kg, the unit of mass), the ampere (A, the unit of electric current), the kelvin (K, the unit of thermodynamic temperature), the mole (mol, the unit of substance amount), and the candela make up the SI's coherent system of units of measurement (cd, luminous intensity)

Therefore , the SI units are metric system of measurement

Hence , the SI units are solved

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Answer:

9.0

Step-by-step explanation:

Mean = Sum of terms/Number of terms

For Data Set A

Mean = 32 + 30 + 49 + 45 + 33/5

= 189/5

= 37.8

For Data Set B

Mean = 30 + 26 + 27 + 37 + 24/5

= 144/5

= 28.8

Hence, the Mean difference is calculated as the absolute difference between the Mean of Data set A and Data set B

Mean Difference = 37.8 - 28.8

= 9.0

Answer:

[tex]2\frac{4}{25}[/tex]

Step-by-step explanation:

The question asks:

2.16 = ???

The is a decimal number that can be converted to a mixed fraction

2.16 = 2 + 0.16

2 = whole number.

So, we are left with 0.16

We can convert this to a fraction

Since it is in 2 decimal places we Multiply by 100

=( 0.16 × 100)/ 100

= 16/100

We simplify this fraction and we have

= 4/25

Therefore,

2.16 = 2 + 0.16

2.16 = 2 + 4/25

2.16 = [tex]2\frac{4}{25}[/tex]

Answer:

608945 is the answer.

Step-by-step explanation:

Because..

After 14 hours the population of bacteria is 14190.

A quantity is subject to exponential decay if it decreases at a rate proportional to its current value.

Given that Some populations, such as bacteria, can be expected under the right conditions to show exponential growth

If 5500 bacteria of a certain type are incubated under ideal conditions, then after t hours we expect to find [tex]5500(1.07)^{t}[/tex] bacteria present.

We need to find how many bacteria would we expect to find after 14 hours

To find this we have to replace t by 14

5500×(1.07)¹⁴

5500×2.58

14190

Hence, after 14 hours the population of bacteria is 14190.

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Answer:

It is likely that the experimental probability of 3 will reach towards the theoretical probability of 3, if Dan rolled the number cube another 80 times.

Step-by-step explanation:

A number cube has 6 faces and contains the numbers from 1 to 6 on each of its faces.

And each number is equally likely to come.

i.e. Theoretical probability of each face = [tex]\frac{1}{6}[/tex]

Probability of any event E is given as:

[tex]P(E) = \dfrac{\text{Number of favorable cases}}{\text {Total number of cases}}[/tex]

It is given that number of times 3 occurs is 6 out of 20.

So, experimental probability of 3 = [tex]\frac{6}{20}=\frac{3}{10}[/tex]

Here, we can see that experimental probability of 3 is greater than that of theoretical probability of 3.

But the number of iterations here are smaller in number i.e. only 20.

As the number of iterations will increase, it is likely that the experimental probability of 3 will reach towards the theoretical probability of 3.

So, we can say that:

It is likely that the experimental probability of 3 will reach towards the theoretical probability of 3, if Dan rolled the number cube another 80 times.

Answer:

47 degrees

Step-by-step explanation:

shown by the square this angel is 90 degrees. 90 - 43  = 47

Answer:

47

Step-by-step explanation:

Therefore

90-43=41

Answer:

Please where is the x in the question

Answer:

Please where is the x in the question

Answer:

Finite Set

Step-by-step explanation:

A finite set is a set that contains a fixed number of elements, that is, the elements are countable. However, the opposite of a finite set is an infinite set which does not have a fixed number of elements and is uncountable.

Examples of a finite set are

a

Question:

What is the equation?

Answer:

10+14c

Step-by-step explanation:

You multiply every number inside the parenthesis by 2.

Answer:

10+14c

Step-by-step explanation:

Multiply two times what is in parentheses.

10+14c

Answer: 12

Step-by-step explanation:

Since AC bisects ∠BAD, we know that ∠BAC and ∠CAD are equal to each other. To find x, we set them equal to each other.

9x-54=4x+6                              [subtract both sides by 4x]

5x-54=6                                      [add both sides by 54]

5x=60                                         [divide both sides by 5]

x=12

Now, we know that x is 12.

Answer:

1/4

Step-by-step explanation:

12*50%=12*0.5=6 males

8*25%=8*0.25=2 females

2+6=8

2 out of 8 students are female

2/8=1/4

Answer: h(h-3)(h+4)  

Step-by-step explanation:

To find the volume of rectangular-shaped box  we will have to multiply the length by the width by the height.

Given the statements  we can determine the  length with the equation

L = h -3  where l is the length and h is the height.

the width can also be represent by the equation

w = h + 4        

The height is is h and the length is h- 3  and the width is also h+4  so the expression will be    h(h-3)(h+4)

All we need to do is divide.

230.40 / 30 = $7.68

Therefore, he/she made $7.68 per hour.

Best of Luck!

Answer:

.08(50h) Because if the tax rate is 8%, then that is 1.08% of 50h.

Step-by-step explanation:

Answer:

WF=34

Step-by-step explanation:

Point I lies between points W and F.

It means point WI + IF = WF

SO WI + IF = WF

WF = 15x – 21

WI= 7x-3

IF= 2x+4

WI + IF = WF

7x-3 +2x+4= 15x-21

7x+2x-15x= -21-4+3

-6x = -22

X= -22/6

X= 11/3

So WF = 15x – 21

WF= 15(11/3) -21

WF= 55-21

WF=34

Answer:

8

Step-by-step explanation:

x² − x = 56

x² − x − 56 = 0

(x − 8) (x + 7) = 0

x = -7 or 8

x is positive, so x = 8.

Answer:

Shape Number of Lines of Reflection Description

equilateral triangle 3 3 perpendicular bisectors of the sides

regular heptagon 7 7 perpendicular bisectors of the sides

regular octagon 8 4 perpendicular bisectors and 4 lines joining pairs of opposite vertices

Step-by-step explanation:

19+(-19)=0

Step-by-step explanation:

So first lets simplify this. We can use the method keep,change, change to do this. Keep the value of positive 19. Then change the + sign to - and the - sign to plus which gets us

19-(+19).

We can remove the +since we know its positive leaving 19-19 which is 0

Answer:

r=-3 FALSE

m<XYQ=7 TRUE

r=4 TRUE

Ray YQ bisects angle XYZ TRUE

Step-by-step explanation:

2r-1+3r-5=3r+2

5r-6=3r+2

2r=8

r=4

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

r=-3 FALSE

m<XYQ=7 TRUE (XYQ=2r-1=2(4)-1=8-1=7)

r=4 TRUE

Ray YQ bisects angle XYZ TRUE  (ZYQ=3r-5=3(4)-5=12-5=7.  Both XYQ and ZYQ=7, so ray YQ is the bisector)

I don't know what the 10 is for in your question.

Answer:

let the number of cows = x

let the number of chickens = y

since there are 42 heads:

x + y = 42

and since a cow has 4 legs, and a chicken has 2

4x + 2y = 144

from first equation:

x + y  = 42

x = 42 - y (now, we will substitute this in the second equation)

4(42 - y) + 2y = 144

168 - 4y + 2y  = 144

2y = 168 - 144

2y = 24

y = 12

now, we know the number of chickens. we will replace y with 12 in the first equation since it is more simpler

x + 12 = 42

x = 30

So, there are 30 cows and 12 chickens

Brainly it if you find the answer helpful

Answer:

The answer is a

Step-by-step explanation:

500 times 4 is 2,000

986 times 1.50 is 1,479

Therefore your answer is a

¯\(°_o)/¯

Answer:

70123214.6cm^2

Step-by-step explanation:

Question:

Select expression that is mathematically equivalent to

[tex]\frac{x}{y-z} + (a-b)*c[/tex]

a) [tex]x/y - z + (a - b) * c[/tex]

b) [tex]x/(y - z) + (a - b) * c[/tex]

c) [tex]x/y - z + a - b * c[/tex]

d) [tex]x/(y - z) + a - b * c[/tex]

Answer:

[tex]x/(y - z) + (a - b) * c[/tex]

Step-by-step explanation:

Given

[tex]\frac{x}{y-z} + (a-b)*c[/tex]

Required

Determine its equivalent

Start by writing y - z in bracket;

[tex]\frac{x}{y-z} + (a-b)*c[/tex]

becomes

[tex]\frac{x}{(y-z)} + (a-b)*c[/tex]

When - is used as divide, it is equivalent to /

The given expression can then be rewritten as

[tex]x/(y - z) + (a - b) * c[/tex]

Hence;

[tex]\frac{x}{y-z} + (a-b)*c[/tex] is equivalent to [tex]x/(y - z) + (a - b) * c[/tex]

Answer:

A

Step-by-step explanation:

A rotation of 180 degrees about point P

1. m=22/7

2. m=672/23

7m+2=24

7m=24-2

7m=22

m=22/7