I need help on 11,12,13,14
plzzz help

Answer:

x²+4x+4x+16

x(X+4)+4(X+4)

(x+4)(X+4)=0

Answer:

x = - 4

Step-by-step explanation:

= − ± 2 − 4 / 2

Once in standard form, identify a, b and c from the original equation and plug them into the quadratic formula.

x2+8x+16=0

= 1

= 8

= 1 6

x= − 8 ± 8 ^2 − 4× 1 × 1 6  /  2×   1

= − 8 ± 64 − 4×   1   ×1 6  / 2× 1

= − 8± 6 4 − 6 4 /   2×  1

x = -8 / 2× 1  

x = -8 / 2

x = -4

Hope this answer helps you :)

Have a great day

Mark brainliest

Answer:

B) 3^-5 (1 / 243) and D) 2^5 x 6^-5 (1 / 243)

Step-by-step explanation:

3 to the negative 5th power as a fraction is

1 / 243.

2 to the power of 5 multiplied by 6 to the power of negative 5 also equals 1 / 243.

Both expressions are equivalent to 2^5 / 6^5 because they equal the same thing (1 / 243).

Answer:

see below

Step-by-step explanation:

x^-2 = 1/x^2  Let x = -2      1/ (-2)^2 = 1/4

x^-1 = 1/x^1  Let x = -2      1/ (-2)^1 = 1/(-2) = -1/2

x^0 = 1  

x^1 = x  Let x = -2      (-2)

x^2 =   Let x = -2      (-2)^2 = 4

Answer:

1)¼

2)½

3)1

4)2

5)4

Step-by-step explanation:

recall that,

[tex] \displaystyle {x}^{ - n} = \frac{1}{ {x}^{n} } [/tex]

we want to evaluate [tex]x^{-2}[/tex] for x=-2

to do so substitute the given value of x

[tex] \displaystyle {2}^{ - 2} [/tex]

apply the formula:

[tex] \displaystyle {2}^{ - 2} = \frac{1}{ {2}^{2} } [/tex]

simplify square:

[tex] \displaystyle {2}^{ - 2} = \boxed{\frac{1}{ 4} }[/tex]

likewise substitute the given value of x to x^-1:

[tex] \displaystyle {2}^{ - 1} [/tex]

apply the formula:

[tex] \displaystyle {2}^{ 1} = \frac{1}{ {2}^{1} } [/tex]

[tex] \displaystyle {2}^{ 1} = \boxed{\frac{1}{ {2}^{} } }[/tex]

substitute the value of x

[tex] \displaystyle {2}^{ 0} [/tex]

it's a universal truth that x⁰=1 Thus

[tex] \displaystyle \boxed{1}[/tex]

Substitute the given value of x to x¹ and x² respectively

[tex] \displaystyle {2}^{ 1} \quad \bigg | \quad {2}^{2} [/tex]

simplify:

[tex] \displaystyle \boxed{2} \quad \bigg | \quad \boxed4[/tex]

and we're done!

Answer:

x = 2, y = -1.

Step-by-step explanation:

2x - 5y = 9

3x + 4y = 2

Multiply first equation by -3 and the second by 2:

-6x + 15y = -27

6x + 8y = 4            Adding the 2 equations:

23y = -23

y = -1.

Now substitute this value for y in the first equation:

2x - 5(-1) = 9

2x = 9 +5(-1)

2x = 9 - 5

2x = 4

x = 2.

Answer:

30

Step-by-step explanation:

A squared + B squared = C squared

24*24= 576 18*18= 324   324+576= 900    square root of 900 is 30

Answer:

200 actual miles

Step-by-step explanation:

Find the actual distance by multiplying 50 by 4, since there are 50 miles in 1 inch.

50(4)

= 200

So, there are 200 actual miles between the two cities.

Answer:

Step-by-step explanation:

[tex]a^{m}*a^{n}=a^{m+n}\\\\9^{10}*9^{x}=9^{10+x}[/tex]

In exponent multiplication, if the bases are same then add the exponents.

[tex] \small \sf \leadsto 9 {}^{10 +x} [/tex]

Step-by-step explanation:

Using exponent's product rule

[tex] \small \sf \: x {}^{n} \times x {}^{m} = x {}^{n + m} [/tex]

[tex] \small \sf \leadsto \: 9 {}^{10} \times 9 {}^{x} [/tex]

[tex] \small \sf \leadsto 9 {}^{10 + x} [/tex]

Step-by-step explanation:

Solution = (-2,1)

Because, the point (-2,1) is tangent to 2 intersecting lines

9514 1404 393

Answer:

  A-  Triangle 2: {8, 15, 17}

Step-by-step explanation:

You may recognize that the triple of choice A is a Pythagorean triple, so can be the side lengths of a right triangle.

Checking the numbers can be done nicely by a graphing calculator or spreadsheet to help avoid the tedium of doing it "by hand".

The basic idea is that the triangle will be a right triangle if the sum of the squares of the shorter sides is the square of the longer side.

Answer:

[tex]81\pi in(2) [/tex]

81pi

Answer:

0.28

Step-by-step explanation:

To know the probability we first need to know the total number of choices for each character in the license plate. Since there are a total of 10 possible numbers (0-9) and 26 letters in the English Alphabet. Then this means that each character has a total of 36 possible choices. Out of these 36 only 10 are numbers, therefore the probability of the first character being a number is

[tex]\frac{10}{36}[/tex] or 0.2777

If we rounded the decimal to the nearest hundredth it would be 0.28

Answer:

The correct answer is 0.28

Para la estudiantes de Español:

La respuesta correcta es 0.28

Step-by-step explanation:

Write 0.28 as the answer! It's correct.

Escribe 0.28 para la respuesta. Es correcto.

Answer:

k=1.1

Step-by-step explanation:

-1.1k=-1.21

divide by -1.1 on both sides to cancel out the -1.1 in front of k so you just have k

Answer:

k = 1.1

Step-by-step explanation:

-1.1k= -1.21

Divide each side by -1.1

-1.1k/-1.1 = -1.21/-1.1

k = 1.1

Answer:

y = -5/4x - 3/2

Step-by-step explanation:

y2 - y1 / x2 - x1

6 - (-4) / -6 - 2

10 / -8

= -5/4

-4 = -5/4(2) + b

-4 = -5/2 + b

-3/2

Answer:

(10x5+15x3)-7

Step-by-step explanation:

Answer:

In geometry, the area can be defined as the space occupied by a flat shape or the surface of an object. The area of a figure is the number of unit squares that cover the surface of a closed figure. Area is measured in square units such as square centimteres, square feet, square inches, etc.

Step-by-step explanation:

Answer:

Area is the quantity that expresses the extent of a two-dimensional region, shape, or planar lamina, in the plane. Surface area is its analog on the two-dimensional surface of a three-dimensional object.

Step-by-step explanation:

Area is the quantity that expresses the extent of a two-dimensional region, shape, or planar lamina, in the plane. Surface area is its analog on the two-dimensional surface of a three-dimensional object.

9514 1404 393

Answer:

  a = 9 meters

Step-by-step explanation:

The perimeter is the sum of the side lengths:

  28 m = a + 2m + a + 8m

  18 m = 2a . . . . . . . . . . . . . . . . subtract 10m, collect terms

  9 m = a . . . . . . . . . . . . . . . divide by 2

The value of a is 9 meters.

Answer:

The answer is 57

Step-by-step explanation:

25 X 3 = 75

75 - 18 = 57

Good luck :)

Answer:

First multiply 25 by 3 which gives you 75.

You then take 75 minus the amount of pink lemonade she has already sold, which is 18.

Your answer should be 57.

So Sofie has 57 cups of pink lemonade left for sale.

Answer:

D) adjacent

Step-by-step explanation:

Answer:

adjacent

Step-by-step explanation:

the two angles have a side in common

Answer:

q^12

Step-by-step explanation:

q^6^2

We know that a^b^c = a^(b*c)

q^6^2 = q^(6*2) = q^12

Answer:

GA = Ray

Step-by-step explanation:

EB = Line

AB = Line Segment

Answer: She had worked 156 hours in all of the month of september.

Step-by-step explanation: ....

Answer:

[tex]\text{D. 36.64}[/tex]

Step-by-step explanation:

The Law of Sines is given by [tex]\frac{a}{\sin A}=\frac{b}{\sin B}=\frac{c}{\sin C}[/tex] and works for any triangle.

Therefore, we have the proportion:

[tex]\frac{c}{\sin 41.5^{\circ}}=\frac{37}{\sin 42^{\circ}},\\\\c=\frac{37\sin 41.5^{\circ}}{\sin 42^{\circ}}=36.6399945706\approx \boxed{36.64}[/tex]

The definition of a compund intrest is:

Compound interest (or compounding interest) is the interest on a loan or deposit calculated based on both the initial principal and the accumulated interest from previous periods.

hope this helps :D

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

Work Shown:

a = 300 = first term

r = 60/300 = 0.2 = common ratio

We multiply each term by 0.2, aka 1/5, to get the next term.

Since -1 < r < 1 is true, we can use the infinite geometric sum formula below

S = a/(1-r)

S = 300/(1-0.2)

S = 300/0.8

S = 375

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As a sort of "check", we can add up partial sums like so

and so on. The idea is that each time we add on a new term, we should be getting closer and closer to 375. I put "check" in quotation marks because it's probably not the rigorous of checks possible. But it may give a good idea of what's going on.

----------

Side note: If the common ratio r was either r < -1 or r > 1, then the terms we add on would get larger and larger. This would mean we don't approach a single finite value with the infinite sum.

Answer:

its -4, guy above me is right!

Step-by-step explanation:

Step-by-step explanation:

everything can be found in the picture

Answer:

answer of question no 1

Step-by-step explanation:

16-2x = 5x+9 (Given)

or, 16-9=5x+2x

or, 7= 7x

or, x = 7/7

or, x= 1