Phương trình (m + 2)x2 – 2mx + 1 = 0 là phương trình bậc hai khi:
A. m ≠ 1. B. m ≠ -2. C. m ≠ 0. D. mọi giá trị của m.

Answer:

Irrational

Step-by-step explanation:

The square root of 2 is an irrational number as it is: ≈ 1.41. When you divide the square root of 2 by 3, it's still irrational: 0.47140452...

( 124 + 6 x 8 ) ÷ 2 = t

=> ( 124 + 48 ) ÷ 2 = t

=> 172 ÷ 2 = t

=> 86 = t

Hi there!

[tex]\large\boxed{t = 86}[/tex]

To solve, we must use PEMDAS:

P: Parenthesis

E: Exponents

M: Multiply

D: Divide

A: Add

S: Subtract

Evaluate the inside of the parenthesis:

(124 + 6 × 8)

Multiply first:

(124 + 48)

Evaluate:

124 + 48 = 172

Divide by 2:

172 ÷ 2 = 86 = t

Answer:

1 and 13 itself

hope this help you

Answer:

130.1°

Step-by-step explanation:

Using the cosine rule:

[tex] = { \cos }^{ - 1} ( \frac{ {14}^{2} + {19}^{2} - {30}^{2} }{2 \times 14 \times 19} )[/tex]

= 130.146°

The measure of angle is 72.8° (accurate to one decimal place ) between the 14 cm and 19 cm sides.

The Law of Cosines (also called the Cosine Rule) is defined as it relates all three sides of a triangle with an angle of a triangle.

c² = a² + b² − 2ab cos(C)

The cosine rule, also known as the law of cosines, relates all 3 sides of a triangle with an angle of a triangle. it relates the lengths of the sides of a triangle to the cosine of one of its angles.

Given data as :

Length of side a = 14 cm

Length of side b = 19 cm

Length of side c = 20 cm

The angle of C is the between the side a and side b

According to the cosine rule,

c² = a² + b² − 2ab cos(C)

Substitute the values of a, b and c in the Cosine Rule,

20² = 14² + 19² - 2(14)(19)cos(C)

400 = 196 + 361 - 532cos(C)

400 = 557 - 532cos(C)

532cos(C) = 557 - 400

532cos(C) = 157

cos(C) = 157/532

cos(C) = 0.2951

(C) = cos⁻¹(0.2951)

(C) = 72.83

(C) = 72.8° (accurate to one decimal place)

Hence, the measure of angle is 72.8° (accurate to one decimal place ) between the 14 cm and 19 cm sides.

Learn more about Cosine Rule here:

https://brainly.com/question/20839703

#SPJ5

Answer:

Step-by-step explanation:

I think it is C

Answer:

[tex]A = 100(.92)^{t}[/tex]

Step-by-step explanation:

Answer: $13875

Step-by-step explanation:

The interest in capital for X will be:

= 10% × $50000

= $5000

The interest in capital for Y will be:

= 10% × $30000

= $3000

The total amount credited to Y's current account will be:

= 3000/(3000 + 5000) × $37000

= 3/8 × $37000

= $13875

The total amount credited to Y's current account at the end of the year will be $13875

Answer:

D H and E i think .........

Answer:

1/4

Step-by-step explanation:

Firstly, we need to get the total number of students on the table

We have this as;

20 + 20 + 25 + 7 + 13 + 5 + 3 + 2 + 5 = 100

Now, we sum up the values we have in the music/Drama column

We have this as;

7 + 13 + 5 = 25

so the probability of selecting a student in the music/drama group is the number of music/drama students divided by the total number

That would be

25/100 = 1/4

Answer:

to add on to what the other dude said its 4

Step-by-step explanation:

Answer: SSS Similarity Theorem (Choice A)

This is because we have three pairs of corresponding sides that form the same ratio, as shown by the given equation PQ/ST = QR/TU = RS/US.

That equation is basically the shorthand version of PQ/ST = QR/TU and QR/TU = RS/US combined together as one.

Answer:

a) 2, 4, 3, 6, 5, 10, 9, 16, ...

Step-by-step explanation:

Step-by-step explanation:

Hey there!

From the above right angled triangle ABC;

Taking Angle ABC as reference angle;

Angle ABC = ???

Perpendicular (p) = AC = 15

Base (b) = AB = 47

Now;

Taking ratio of sin;

[tex] \tan( \alpha ) = \frac{p}{b} [/tex]

Keep value;

[tex] \tan( \alpha ) = \frac{15}{47} [/tex]

Simplify it;

[tex] \tan( \alpha ) = 0.3191489[/tex]

Take tan to next side;

Angle ABC (alpha) = tan'(0.3191489)

Therefore, the measure of angle ABC is 17.70°.

Hope it helps!

Answer:

29

Step-by-step explanation:

Product of 4 and 6, (4x6) = 24

Now,

By adding 5 to 24, we get

(24+5) = 29

Answer:

d

Step-by-step explanation:

answer is d It can't be anything else

Answer:

D the diameter is twice the size of the radius

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

alr, 15 fruits total, 6 are apples.

6/15 = 2/5

2/5 is also the same as 40% or 0.4, therefore the option is d.

go to gauthmath's sub reddit if needing more help ^^

Answer:

62 sq ft

Step-by-step explanation:

3 · 3 = 9

The first garden's area is 9 square feet.

7 · 7 = 49

The second garden's area is 49 square feet.

2 · 2 = 4

The third garden's area is 4 square feet.

We add 9 + 49 + 4.

9 + 49 + 4 = 62

The total area of the three gardens is 62 square feet.

Answer:

120%

Step-by-step explanation:

From the question, 50 people were called and 60 people came

what this mean is that 10 extra people came

Initially, the 50 out of the 60 represented the first 100%

Now, for the 10, what we have to do is to find the percentage of 50 that is 10

We have this as;

10/50 * 100 = 20%

Now, we add this to the initial 100%

So we have 100 + 20 = 120%

Answer:

angle c = 32.204°

Answer:

multiply them

Step-by-step explanation:

trust me on this one i love using that hack

Answer:

- 34u^2

Step-by-step explanation:

8u^2 - 42u^2

= ( 8 - 42 )u^2

= - 34u^2

[tex]\huge\textsf{Hey there!}[/tex]

[tex]\large\textsf{The only thing we can do to solve for this equation is to COMBINE}\\\large\textsf{the LIKE TERMS. }[/tex]

[tex]\mathsf{8u^2 - 42u^2}\\\mathsf{= (8u^2- 42u^2)}\\\mathsf{= 8 - 42 \rightarrow \bf -34}\\\textsf{Thus this means }\mathsf{8u^2 - 42u^2}\textsf{ has to equal to }\mathsf{ \bf -34u^2}\\\\\\\\\\\\\boxed{\boxed{\large\textsf{Answer: \bf-34u} \mathsf{\bf ^2}}}\huge\checkmark[/tex]

[tex]\large\textsf{Good luck on your assignment and enjoy your day!}\\\\\frak{Amphitrite1040:)}[/tex]

a box has a length of 6x inches

the width equals one third the length

the height equals half the length.

Volume of a rectangle box=l×w×h

if the volume equals 972 cubic inches,

The value of x is 27

a box has a length of 6x inches

so,

But,the width equals one third the length

[tex]w=\dfrac{1}{3}×6x \\\\w=2x [/tex]

again,the height equals half the length.

[tex]h=\dfrac{1}{2}×6x \\\\h=3x[/tex]

we knows:-

Volume of a rectangle box=l×b×h

if the volume equals 972 cubic inches,

Final solution:

.°.The value of x is 27.

Answer:

It's A.)

Step-by-step explanation:

Answer:

y = -2x + 6

Step-by-step explanation:

y = -2x + b

-4 = -2(5) + b

-4 = -10 + b

6 = b

Answer:

its D I think........ not 100% sure

Answer:

x=100

Step-by-step explanation:

100 and x are vertical angles and vertical angles are equal

x = 100

Answer:

100 degrees

Step-by-step explanation:

Angle x is formed from two intersecting segments. Opposite angles of intersecting lines or segments are congruent therefore since the opposite angle is given at 100 degrees, x must also be 100.

Answer:

upper level chairs = 2,502 chairs

Lower level chairs = 7,456 chairs

Middle level chairs = 5044 chairs

Step-by-step explanation:

A baseball stadium holds 15,002 seats. The lower level has 50 fewer than three times as many seats as the upper level. The middle level has 40 more than twice as many seats as the upper level. The upper level has( ) seats.

Total chairs in the stadium = 15,002

Let

upper level chairs = x

Lower level chairs = 3x - 50

Middle level chairs = 2x + 40

Total = lower level + middle level + upper level

15,002 = (3x - 50) + (2x + 40) + x

15,002 = 3x - 50 + 2x + 40 + x

15,002 = 6x - 10

15,002 + 10 = 6x

15,012 = 6x

x = 15,012 / 6

x = 2,502

upper level chairs = x = 2,502 chairs

Lower level chairs = 3x - 50

3(2,502) - 50

= 7506 - 50

= 7,456 chairs

Middle level chairs = 2x + 40

= 2(2502) + 40

= 5004 + 40

= 5044 chairs

Answer:

people who ordered a cold drink=

[tex]8+12+5=25[/tex]

people who ordered a large cold drink= 5

[tex]probability= \frac{5}{25}[/tex] [tex]=\frac{1}{5}[/tex]

[tex]=\frac{1}{5} \times100=20~\%[/tex]

[tex]Answer: 20\%[/tex]

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

Hope it helps...

Have a great day!!

The probability that the customer ordered a large given that he or she ordered a cold drink is 5%.

Probability is simply the possibility of getting an event. Or in other words, we are predicting the chance of getting an event.

The value of probability will be always in the range from 0 to 1.

Given the order of the first 100 customers in a coffee shop.

Number of customers who ordered a large which is also a cold drink = 5

Total number of customers = 100

Probability = Number of desired outcomes / Total number of outcomes

Substituting,

Probability = 5 / 100 = 0.05 = 5%

Hence the required percent is 5%.

Learn more about Probability here :

https://brainly.com/question/30034780

#SPJ7

the value of a is 32°.

Answer:

Solution given:

2a+10=74

Subtract both side by 10

2a+10-10=74-10

2a=64

divide both side by 2

2a/2=64/2

a=32°

Answer:

a = 32

Step-by-step explanation:

2a + 10 = 74.

We have to find the value of a.

Let's begin.

Step 1 :- Move constant to the right-hand side and change their sign.

Step 2 :- Subtract 10 from 74.

Step 3 :- Divide both side by 2.

Step 4 :- Reduce the fractions.