SOMEONE PLEASE HELP ME(picture is added!)
Given: circle A extremely tangent to circle B

Answer:

Step-by-step explanation:

[tex] \sf{ {x}^{2} - 4x - 21}[/tex]

Here, we have to find the two numbers that subtracts to 4 and multiplies to 21

⇒[tex] \sf{ {x}^{2} - (7 - 3)x - 21}[/tex]

⇒[tex] \sf{ {x}^{2} - 7x + 3x - 21}[/tex]

Factor out X from the expression

⇒[tex] \sf{ x(x - 7) + 3x - 21}[/tex]

Factor out 3 from the expression

⇒[tex] \sf{x(x - 7) + 3(x - 7)}[/tex]

Factor out x-7 from the expression

⇒[tex] \sf{(x - 7)(x + 3)}[/tex]

Hope I helped!

Best regards!!

Answer:

[tex]\boxed{\boxed{\bold{(x - 7)(x + 3)}}}[/tex]

Step-by-step explanation:

[tex] {x}^{2} - 4x - 21 \\ {x}^{2} - 7x + 3x - 21 \\ x(x - 7) + 3(x - 7) \\ (x - 7)(x + 3)[/tex]

Answer:

0.16%

Step-by-step explanation:

From the statement of the question;

Number of Laryngeal cancer due to smoking = 160

Population of smokers = 100,000

Hence the percentage of smokers liable to have Laryngeal cancer = 160/100000 ×100/1

=0.16%

Hence 0.16% of smokers are liable to Laryngeal cancer

Answer:

The height of the plank after the π/3 rotation motion is 8.464 ft

Step-by-step explanation:

The radius of the wheel = 4 ft

The elevation of the bottom of the wheel from the bottom = 1 foot

The angle to which the wheel is rolled = π/3 radians

The height of a rotating wheel is given by the following relation

f(t) = A·sin(B·t + C) + D

Where;

D = Mid line =  4 + 1 = 5 feet

B·t = π/3

C = 0

A = The amplitude = 4

Which gives;

f(t) = 4×sin(π/3) + 5 = 8.464 ft

The height of the plank after the π/3 rotation motion = 8.464 ft.

Answer:7 ft

Step-by-step explanation:

C

Answer:

[tex]x\geq -30[/tex]

Step-by-step explanation:

Work to isolate x on one side of the inequality:

[tex]3-\frac{x}{2} \leq 18\\3-18\leq \frac{x}{2} \\-15\leq \frac{x}{2}\\-30 \leq x[/tex]

Therefore the answer is all x values larger than or equal to -30

[tex]x\geq -30[/tex]

Answer:

4

Step-by-step explanation:

(10-x)/x=3/2

so 2*(10-x)=3x

20-2x=3x

+2x        +2x

20=5x

x=20/5

x=4

verify

(10-4)/4=3/2

6/4=3/2

TRUE

Answer: Need more info. We need to know how many minutes over the 300 minutes were used in order to calculate the correct monthly fee.

Step-by-step explanation:

Answer:

The stock market increased 75 point: 75 or +75

Answer:

The stock market increased by 75 so your answer according to my understanding is +75 or 75.

Step-by-step explanation:

Hope it will help you :)

Steps to solve:

-k^2 - (3k - 6n) + 2n; k = -3, n = -5

~Substitute ans simplify

-(-3)^2 - (3(-3) - 6(-5)) + 2(-5)

3^2 - (-9 + 30) - 10

~Use PEMDAS and solve the rest

9 - 21 - 10

-13 - 10

-23

Best of Luck!

Answer:

-2

Step-by-step explanation:

-(-3)∧2-(-9+30)+10= 9+9-30+10= -2

Answer:

B and C

Step-by-step explanation:

1/5 prefer apple juice

T = prefer orange juice

9/20 prefer apple or oranger juice

First, we can subtract 1/5 from 9/20 to get 1/4 (simplified)

Equation = 9/20  - 4/20 = 5/20 = 1/4

Plug it in:

A. 9/20 + 1/4 =1/5 (Incorrect)

B. 1/5 + 1/4 = 9/20 (Correct

C. 1/4 + 1/5 = 9/20 (Correct)

D. 1/4 - 1/5 = 9/20 (Incorrect)

Answer:

1/5 + t = 9/20

t + 1/5 = 9/20

Step-by-step explanation:

1/5 are apple + unknown for orange = apple + orange

1/5  + unknown = 9/20

Let t = unknown

1/5 + t = 9/20

order doesn't matter on the left side since we are adding

t+1/5 = 9/20

Answer:

the answer is going to be A. -6x - 14 x+ 6

Answer:

[tex]x =\dfrac{45 \sqrt{6}}{ 2}[/tex]

Step-by-step explanation:

From the given information:

The diagrammatic interpretation of what the question is all about can be seen in the diagram attached below.

Now, let V(x) be the time needed for the runner to reach the buoy;

∴ We can say that,

[tex]\mathtt{V(x) = \dfrac{70-x}{7}+\dfrac{\sqrt{54^2+x^2}}{5}}[/tex]

In order to estimate the point along the shore, x meters from B, the runner should  stop running and start swimming if he want to reach the buoy in the least time possible, then we need to differentiate the function of V(x) and relate it to zero.

i.e

The differential of V(x) = V'(x) =0

=[tex]\dfrac{d}{dx}\begin {bmatrix} \dfrac{70-x}{7} + \dfrac{\sqrt{54^2+x^2}}{5} \end {bmatrix}= 0[/tex]

[tex]-\dfrac{1}{7}+ \dfrac{1}{5}\times \dfrac{x}{\sqrt{54^2+x^2}}=0[/tex]

[tex]\dfrac{1}{5}\times \dfrac{x}{\sqrt{54^2+x^2}}= \dfrac{1}{7}[/tex]

[tex]\dfrac{5x}{\sqrt{54^2+x^2}}= \dfrac{1}{7}[/tex]

[tex]\dfrac{x}{\sqrt{54^2+x^2}}= \dfrac{1}{\dfrac{7}{5}}[/tex]

[tex]\dfrac{x}{\sqrt{54^2+x^2}}= \dfrac{5}{7}[/tex]

squaring both sides; we get

[tex]\dfrac{x^2}{54^2+x^2}= \dfrac{5^2}{7^2}[/tex]

[tex]\dfrac{x^2}{54^2+x^2}= \dfrac{25}{49}[/tex]

By cross multiplying; we get

[tex]49x^2 = 25(54^2+x^2)[/tex]

[tex]49x^2 = 25 \times 54^2+ 25x^2[/tex]

[tex]49x^2-25x^2 = 25 \times 54^2[/tex]

[tex]24x^2 = 25 \times 54^2[/tex]

[tex]x^2 = \dfrac{25 \times 54^2}{24}[/tex]

[tex]x =\sqrt{ \dfrac{25 \times 54^2}{24}}[/tex]

[tex]x =\dfrac{5 \times 54}{\sqrt{24}}[/tex]

[tex]x =\dfrac{270}{\sqrt{4 \times 6}}[/tex]

[tex]x =\dfrac{45 \times 6}{ 2 \sqrt{ 6}}[/tex]

[tex]x =\dfrac{45 \sqrt{6}}{ 2}[/tex]

Answer:

Researcher B

Step-by-step explanation:

Power of statistics is the probability that a test will correctly reject a false null hypothesis.

This probability is more accurate with greater sample size as it is better representation of the population.

Therefore researcher B has more power to detect an effect since he has nearly twice sample size (40 vs 22)

Answer:

A - the arrow on the right points to the point -2. the arrow on the left moves 7 places to the left to the point -9.

this is what the expression is stating: -2 - 7 = -9

Answer:

x=7

Step-by-step explanation:

took the test

The required solution of the equation is x = 7.

Given that,
Solution of the equation,
x / 3 + x / 6 = 7 / 2 is to be determined.

In mathematics, it deals with numbers of operations according to the statements. There are four major arithmetic operators, addition, subtraction, multiplication, and division,

The equation is the relationship between variables and represented as y = ax + b   is example of a polynomial equation.

Here,
x  / 3 + x / 6 = 7 / 2
Taking LCM on the left side
[2x + x] /6 = 7 / 2
3x / 6 = 7 / 2
x / 2 = 7 / 2
x = 7

Thus,  the required solution of the equation is x = 7.

Learn more about arithmetic here:

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Answer:

98

Step-by-step explanation:

Answer:

98

Step-by-step explanation:

Answer:

A).Amount = $218250

B). Amount = $88700

Step-by-step explanation:

A) .$5000 in an account at age 23, and withdraw it 42 years

Number of years t= 42 years

Principal P = $5000

Rate r= 9%

Number of times compounded n= 42

A= p(1+r/n)^(nt)

A= 5000(1+0.09/42)^(42*42)

A= 5000(1+0.002143)^(1764)

A= 5000(1.002143)^1764

A= 5000(43.65)

A= 218250

Amount = $218250

B).waits 10 years before making the deposit, so that it stays in the account for only 32 years

Number of years t= 32 years

Principal P = $5000

Rate r= 9%

Number of times compounded n= 32

A= p(1+r/n)^(nt)

A= 5000(1+0.09/32)^(32*32)

A= A= 5000(1+0.0028125)^(1024)

A= 5000(1.0028125)^1024

A= 5000(17.74)

A= 88700

Amount = $88700

Answer:

1.37

Step-by-step explanation:

The student can give only 0.139 % answer correctly.

The first and second questions have four answer choices,

Probability of first and second question answer correctly is,

                [tex]P_{1}=\frac{1}{4}*\frac{1}{4} =\frac{1}{16}[/tex]

The third and fourth questions have three answer choices,

Probability of third and fourth question answer correctly is,

           [tex]P_{2}=\frac{1}{3} *\frac{1}{3}=\frac{1}{9}[/tex]

The last question has five answer choices.

Probability of fifth question answer correctly is,

              [tex]P_{3}=\frac{1}{5}[/tex]

The probability of corrected answer is,

        [tex]P=P_{1}*P_{2}*P_{3}\\\\P=\frac{1}{16} *\frac{1}{9}*\frac{1}{5}=\frac{1}{720}[/tex] = 0.139 %

Hence, The student  can give only 0.139 % answer correctly.

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Answer: This is what i can do . i hope it helps:)

The angle between the longitude of the Galapagos Islands and that of Nauru is 90.30°+166.56°=256.86°.

We find the sum since these places have different longitude directions, but this is the major arc, and the minor arc will be 360°−256.86°=103.14°.

Angle between Galapagos Islands and 180°E/W = 180° - 90.30° = 89.70°

Angel between Nauru island and 180°E/W = 180° - 166.56° = 13.44°

Total angle between Galapagos Islands and Nauru = 89.70 ° + 13.44° = 103.14°.

Step-by-step explanation:

[tex]let \:\alpha \:be\:our\:teetah \\l = \frac{r \pi}{180 \°} \times \alpha \\\\= \frac{6400\pi}{180 \°} \times 103.14\\\\= 11520.848\\\\= 11521 km[/tex]

Answer:

56 different ways

Step-by-step explanation:

This is a combination question since it deals with selection. For example, if n objects is to be selected from a pool of r objects, this can be done in nCr different ways.

nCr = n!/(n-r)!r!

According to the question, If the police have 8 ​suspects, the different number of ways 5 can be selected for a line up is expressed as 8C5

8C5 = 8!/(8-5)!5!

8C5 = 8!/(3!)!5!

8C5 = 8*7*6*5!/3*2*5!

8C5 = 8*7*6/3*2

8C5 = 8*7

8C5 = 56 different ways

Hence, the selection of picking 5 for a line up out of 8 suspects can be done in 56 different ways.

Answer:

x = - 12

Step-by-step explanation:

2                5

--- x - 2 =   --- x

3                6

2x             5

---  - 2 =  ------ x

3             3 * 2

(2x) - 3 * 2          5x

----------------  =  --------

       3               2 * 3

x = - 12

Answer:

9,962

Step-by-step explanation:

3,489+8,617+1,240=13,346

564*6=3,384

13,346-3,384=9,962

Answer:

16 mi

Step-by-step explanation:

To find how many miles you could travel with one gallon, you want to multiply both sides of the equation by 64. This will make '1/64' to 1, so the answer should be 1/4 * 64 = 16.

Answer:

25/36

Step-by-step explanation:

Solved in steps:

Simplest fraction is 25/36

Answer: [tex]x^4-x^3-16x^2+16x[/tex]

Step-by-step explanation:

Factor theorem : If x=a is a zero of a polynomial p(x) then (x-a) is a factor of p(x).

Given: Zeroes of polynomial : -4,0, 1, and 4.

Then Factors = [tex](x-(-4)), (x-0), (x-1) and (x-4)[/tex]   [By factor theorem ]

[tex]=(x+4), (x-0), (x-1) and (x-4)[/tex]

Multiplying these factors to get polynomial in standard form.

[tex](x+4)\times(x-0)\times(x-1)\times(x-4) \\\\= x(x+4)(x-4)(x-1)\\\\= x(x^2-4^2)(x-1)\\\\= x(x^2-16)(x-1)\\\\= x(x^2-16)(x-1)\\\\=x(x^2x+x^2\left(-1\right)+\left(-16\right)x+\left(-16\right)\left(-1\right))\\\\= x(x^3-x^2-16x+16)\\\\=x^4-x^3-16x^2+16x[/tex]

Hence, B is the correct option.

Answer:

C. 1.01,1.01¯¯¯¯,2119

Step-by-step explanation:

1.01,1.01¯¯¯¯,2119

Is arranged from the least number to the greatest number.

It shows the numbers with decimals, and it showed the number with Dec again.

Then gave a space in between then the highest number in the least follows

So option c is the answer

Answer:

D

Step-by-step explanation:

3x - 4 < 8

Add 4:

3x - 4 + 4 < 8 + 4

3x < 12

Divide by 3:

3x / 3 < 12 / 3

x < 4

Answer:

D. x<4

Step-by-step explanation:

3x-4<8

3x<8+4

3x<12

x<4

Hope this helps ;) ❤❤❤

Answer:

D

Step-by-step explanation:

Given

f(x) = 3x² - 24x + 10 ← factor out 3 from 3x² - 24x

     = 3(x² - 8x) + 10

Using the method of completing the square

add/ subtract ( half the coefficient of the x- term )² to x² - 8x

f(x) = 3(x² + 2(- 4)x + 16 - 16) + 10

      = 3(x - 4)² - 48 + 10

      = 3(x - 4)² - 38 ← in vertex form → D

Answer:

d

Step-by-step explanation:

Answer:

66

Step-by-step explanation:

In statistics, the formula for RANGE is given as the difference between the Highest and the Lowest value.

In the above values we are given data consisting of the 7 games that Roger bowled.

155, 165, 138, 172, 127, 193 , 142.

Step 1

We arrange from the least to the highest.

127, 138, 142, 155, 165, 172, 193

Step 2

Lowest value = 127

Highest value = 193

Step 3

Range = 193 - 127

= 66

Therefore, the range of Roger's scores is 66

Answer:

A) P_n = 1.06(P_(n-1)) - 80

B) 887 fishes

Step-by-step explanation:

A) We are told that the lake initially contains 1000 fishes.

Thus, P_o = 1000

Now, the number of fishes increases by 6% each month

Thus, after n months, we have;

P_n = P_(n-1) + 0.06P_(n-1)

P_n = 1.06P_(n-1)

Where P_(n-1) is the population of fish in the previous month.

We are told that 80 fishes are lost each month.

Thus;

P_n = 1.06(P_(n-1)) - 80

B) We want to find out how many fishes we have after 5 months.

Thus;

P_5 = 1.06(P_(5-1)) - 80

P_5 = 1.06(P_4) - 80

We don't know P_4,thus;

P_o = 1000

P_1 = 1.06(1000) - 80 = 980

P_2 = 1.06(980) - 80 = 958.8

P_3 = 1.06(958.8) - 80 = 936.328

P_4 = 1.06(936.328) - 80 = 912.50768

Thus,

P_5 = 1.06(912.50768) - 80 = 887.2581408 ≈ 887

Answer:

Hi

Step-by-step explanation:

Two integers are relatively prime (or coprime) if there is no integer greater than one that divides them both (that is, their greatest common divisor is one). For example, 12 and 13 are relatively prime, but 12 and 14 are not.