can someone help please

Answer:

x=2

Step-by-step explanation:

5x+3)+(2x2-3x-7)

Answer:

Step-by-step explanation:

95+16x-4=-1+39x

91+16x=-1+39x

91+1=39x-16x

92=23x

92/23=x

4=x

Answer:

x = -5

y = 2×^2

y = 2 x (-5 x -5)

= 2 x 25

y = 50

Answer:

2*(5x+4) + 2*(3x+2)

= 10x + 8 + 6x + 2

= 16x + 10

The perimeter of the rectangle, in feet, is represented by (16x + 10)

Answer:

(16x + 12) ft

Step-by-step explanation:

Perimeter of the rectangle = 5x + 4 + 3x + 2 + 5x + 4 + 3x + 2

Perimeter of the rectangle = (16x + 12) ft

Answer:

66°

Step-by-step explanation:

You would add both of the parts together

Given:

Radius of the circle = 4 meters

Measure of arc = 135 degrees

To find:

The area of the sector bounded by the given arc.

Solution:

Formula for area of a sector is:

[tex]A=\pi r^2\times \dfrac{\theta}{360^\circ}[/tex]

Where, r is the radius and [tex]\theta[/tex] is the central angle or measure of intercepted arc.

Putting [tex]r=4,\ \theta =135^\circ[/tex] in the above formula, we get

[tex]A=\pi \times (4)^2\times \dfrac{135^\circ}{360^\circ}[/tex]

[tex]A=\pi \times 16\times \dfrac{3}{8}[/tex]

[tex]A=\pi \times 2\times 3[/tex]

[tex]A=6\pi [/tex]

Therefore, the exact area of the given sector is [tex]6\pi [/tex] square meters.

Answer:

the answer is just 6π

Step-by-step explanation:

Answer:

23.92°, 78.503°, and 77.577°

Step-by-step explanation:

The coordinates of the vertices of the triangle are;

X(-3, -5), Y(2, 6), Z(6, 3)

The vectors are;

z = [tex]\left \langle 2 - (-3), 6 - (-5) \right \rangle[/tex] = [tex]\left \langle 5, 11 \right \rangle[/tex]

y = [tex]\left \langle 6 - (-3), 3 - (-5) \right \rangle[/tex] = [tex]\left \langle 9, 8 \right \rangle[/tex]

x = [tex]\left \langle 2 - 6, 6 - 3 \right \rangle[/tex] = [tex]\left \langle -4, 3 \right \rangle[/tex]

[tex]cos (\alpha ) = \dfrac{z \cdot y}{\left | z \right | \times \left | y \right |}[/tex]

Therefore, we get;

[tex]cos (\alpha ) = \dfrac{5 \times 9 + 11 \times 8 }{\left | \sqrt{5^2 + 11^2} \right | \times \left | \sqrt{9^2 + 8^2} \right |} = \dfrac{133}{\sqrt{146} \times \sqrt{145} } \approx 0.91409[/tex]

α = arccos(0.91490) ≈ 23.92°

γ = The angle between -y and x

-y = [tex]\left \langle -9, -8 \right \rangle[/tex]

We get;

[tex]cos (\gamma) = \dfrac{-y \cdot x}{\left | -y \right | \times \left | x \right |}[/tex]

Therefore;

[tex]cos (\gamma) = \dfrac{-9 \times -4 + -8 \times 3 }{\left | \sqrt{(-9)^2 + (-8)^2} \right | \times \left | \sqrt{(-4)^2 + 3^2} \right |} = \dfrac{12}{\sqrt{145} \times \sqrt{25} } \approx 0.199309[/tex]

γ = arccos(0.199309) ≈ 78.503°

γ ≈ 78.503°

By angle sum property, β = 180° - (α + β)

β ≈ 180° - (23.92° + 78.503°) = 77.577°

β ≈ 77.577°

The interior angles are;

23.92°, 78.503°, and 77.577°

Answer: area= 16.8 yds^2

perimeter=18.8 yds

Step-by-step explanation:

Answer:

Perimeter = 20.2876 yds and Area = 16.8 yds^2

Step-by-step explanation:

Hope this helps :).

Answer:

None of these

Step-by-step explanation:

Corresponding, alternate interior, and same side interior angles only occur in a set of parallel lines. In figure f, none of the lines are parallel. Straight angles are defined as angles that make up one side of the line, or 180 degrees, and as the picture clearly shows, this is not the case.

Answer:

a.straight

b.corresponding

c.alternate interior

d.none of these

e.none of these

f.none of these

g.none of these

h.none of these

i.same side interior

Answer:

Answer:

a

Step-by-step explanation:

4 to the power of 4 is just 4x4 which equals 16

Answer:

f(x) = sin(x)

Step-by-step explanation:

sin(x) = 0 for x = n×pi, n>=0

sin(x) = 1 for pi/2 and so on

so, clearly that graph is a pure sine wave.

Answer:

x = [tex]\sqrt{6}[/tex]

Step-by-step explanation:

Since the given triangle is equilateral the all 3 sides would be:

[tex]\sqrt{6} +\sqrt{6}[/tex] or [tex]\sqrt{12}[/tex]. Now we know that the base of the right triangle is [tex]\sqrt{6}[/tex] and the hypotenuse is [tex]\sqrt{12}[/tex]. Therefore we can say;

A² + B² = C²

([tex]\sqrt{6}[/tex])² + x² = ([tex]\sqrt{12}[/tex])²

6 + x² = 12

x² = 12 - 6

x² = 6

x = [tex]\sqrt{6}[/tex]

Therefore; x = [tex]\sqrt{6}[/tex] is the length of x, in simplest radical form.

Answer:

Step-by-step explanation:

scale factor=3/2

(8,6)

(12,6)

(12,10)

use formula

(x,y)=(kx,ky)  (k means scale factor)

(8,6)=(3/2*8 , 3/*6)

=(24/2 , 18/2)

=(12 , 9)

(12,6)=(3/2*12 , 3/2*6)

=(36/2 , 18/2)

=(18 , 9)

(12,10)=(3/2*12 , 3/2*10)

=(36/2 , 30/2)

=(18 , 15)

Answer:

18 ,15

Step-by-step explanation:

jwihehf

kkeje

kkejjehgo

ekke

Answer:

220?

Step-by-step explanation:

Answer:

(3.442 ; 6.558)

Step-by-step explanation:

Given :

Mean score after patient is given the magnet treatment :

Mean score, xbar = 5

Standard deviation, s = 2.4

Sample size, n = 20

The confidence interval :

Mean ± margin of error

Margin of Error = Tcritical * standard error

The critical value at 95%, df = 20 - 1 = 19

Tcritical = 2.093 (T-student distribution)

The standard error = s/√n = 2.4 / √20 = 0.5367

The margin of error = 2.903 * 0.5367 = 1.558

The confidence interval :

Xbar ± Margin of error

5 ± 1.558

(3.442 ; 6.558)

Answer:

743 divided by 4= 185.75

87,965 divided by 365= 241

6,546 divided by 9= 727.333333                                                                                           Hope this helps! :P

Answer: 1223.3in^3

the answer is straight from delta math, and rounded to the nearest tenth.

Answer:

[tex]f(x)\neq g(x)[/tex]

[tex]when ~x=3[/tex]

[tex]So, the ~third~ option~is ~your~ answer[/tex]

Answer:

the scientific study of the human mind and its functions, especially those affecting behaviour in a given context.

Answer:

the scientific study of the human mind and its functions, especially those affecting behaviour in a given context.

Step-by-step explanation:

Answer:

3yz² - 3z² - 5y + 7

Step-by-step explanation:

Sum of two polynomials = –yz² - 3z² – 4y + 4

One of the polynomial = y - 4yz²- 3

Find the other polynomial

The other polynomial = sum of the polynomials - one of the polynomial

= –yz² - 3z² – 4y + 4 - (y - 4yz² - 3)

= –yz² - 3z² – 4y + 4 - y + 4yz² + 3

= -yz² + 4yz² - 3z² - 4y - y + 4 + 3

= 3yz² - 3z² - 5y + 7

A. 0 -2yz?

B. – 4y + 7 01 - 2yz

C. – 3y + 1 0 -5yz² + 3z² – 3y + 1 D. 3yz² - 3z² – 5y + 7

Answer:

91

Step-by-step explanation:

91

Answer:

The numbers are 18, 13, and 72.

Step-by-step explanation:

Let the three numbers be represented by a, b, and c.

The sum of the three is 103. Thus, we can write that:

[tex]a+b+c=103[/tex]

The second number is five less than the first. So:

[tex]b=a-5[/tex]

And the third number is four times the first. So:

[tex]c=4a[/tex]

Substitute:

[tex]a+(a-5)+(4a)=103[/tex]

Solve for a. Combine like terms:

[tex]6a-5=103[/tex]

Add five to both sides:

[tex]6a=108[/tex]

And divide both sides by six. Therefore:

[tex]a=18[/tex]

So, the first number is 18.

Since the second number is five less than the first, the second number is 13.

And since the third number is four times the first, the third number is 72.

Answer:

they increased by 25%

Step-by-step explanation:

16/4 = 4. 16+4 = 20. Because of this, the number of wins increased by 4, or 1/4 of last year's wins. this means it increased by 25%.

Answer:

what are the phrases to choose from?

Step-by-step explanation:

Answer:

43.8°

Step-by-step explanation:

Applying,

Cosine rule,

From the diagram attached,

x² = y²+z²-2yxcos∅.................... Equation 1

where ∅ = ∠YXZ

Given: x = 8.7 m, y = 10.4 m, z = 12.4 m

Substitute these values  into equation 1

8.7² = 10.4²+12.4²-[2×10.4×12.4cos∅]

75.69 = (108.16+153.76)-(257.92cos∅)

75.69 = 261.92-257.92cos∅

collect like terms

257.92cos∅ = 261.92-75.69

257.92cos∅ = 186.23

Divide both sides by the coefficient of cos∅

cos∅ = 186.23/257.92

cos∅ = 0.722

Find the cos⁻¹ of both side.

∅ = cos⁻¹(0.7220)

∅ = 43.78°

∅ = 43.8°

Answer:

its 1  

Step-by-step explanation: i used a cacular for  this

Answer:

a = 12

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Equality Properties

Trigonometry

[Right Triangles Only] Pythagorean Theorem: a² + b² = c²

Step-by-step explanation:

Step 1: Define

Identify variables

a = a

b = 9

c = 15

Step 2: Solve for a

Answer:

17.5 + 15.5

Step-by-step explanation:

17+ 15 = 32

.5 + .5 = 1

32 + 1 = 33

Answer:

15.5 and 17.5

Step-by-step explanation:

Let x and y be the two numbers

x+y = 33

x-y = 2

Add the two equations together

x+y = 33

x-y = 2

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

2x = 35

Divide by 2

2x/2 = 35/2

x = 17.5

Substitute into

x+y = 33

17.5 +y = 33

y = 33-17.5

y = 15.5