MATHEMATICS HIGH SCHOOL

What is the product?(2x – 1)(x + 4)
2x2 – 4
2x2 + 4
2x2 + 7x – 4
2x2 – 7x – 4

Answers

Answer 1
Answer: The answer is 2x^2+7x-4 i think that's what you meant for the last one.
Answer 2
Answer:

Answer:

the answer is 2x^2+7x-4

Step-by-step explanation:

hope it helpsssssssssss

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Find the area of the region bounded by the graphs of the equations
2y^2 = x + 4 and x = y^2

Answers

Answer:

Step-by-step explanation:

2y^2 = x + 4 \rightarrow x = 2y^2 -4

x=y^2

intersection points

2y^2 - 4 = y^2

y^2 =4

y = \pm 2 \rightarrow (4, -2)~ and~ (4, 2)

\int\limits^2_(-2) (y^2-(2y^2-4)} \, dy

You finish it by yourself

Which of the following is the equation of a line that passes through the points (0,6) and (2,10)?A. y = -2x + 6
B. y = 2x - 6
C. y = 2x + 6
D. y = -2x - 6

Answers

Given:
(0,6) and (2,10)

a) y = -2x + 6      ; y = -2(2) + 6 
y = -2(0) + 6        ; y = -4 + 6
y = 6                     ; y = 2

b) y = 2x - 6     
y = 2(0) - 6
y = -6

c) y = 2x + 6 ;   y = 2(2) + 6
y = 2(0) + 6   ;   y = 4 + 6
y = 6               ;   y = 10           Choice C. is the correct equation.

Answer: option c!

Step-by-step explanation:

What are the measurements???

Answers

Answer:

angle 4 is 31

angle 5 is 59.

Step-by-step explanation:

M<4 and M<5 add up to a  right angle which is 90 degrees . so you put it in a equation form.

2x-5+4x-13=90

rearrange it

2x+4x-5-13=90

6x-18=90

add 18 on both sides

6x=108

divide 6 from both sides

and you get x= 18

Plug in x for angle 4 =2(18)-5 =  31

plug in x for angle 5 = 4(18)-13 = 59

The circumference of a circle is 12 pi inches. find its radius and area the radius of the circle is____inthe area of the circle is _____in^2

Answers

The circumference of a circle has the formula: 2*pi*r. So, we could easily determine the value of r.

C = 2*pi*r
12*pi = 2*pi*r
12 = 2r
r = 12/2
r = 6 inches

Knowing the r, we could find the area which has the formula

A = pi*r^2
A = pi*6^2
A = 113.1 square inches

Let n = 2.5. what is the value of 2n(6n-3)+4n?

Answers

n = 2.5, \ \n\n\ 2n(6n-3)+4n = 12n^2 - 6n +4n =12n^2-2n\n \n12n^2-2n=12 *(2.5)^2-2*2.5=12*6.25-5=75-5=70
2n(6n-3)+4n

substitute n=2.5

2*2.5(6*2.5-3)+4*2.5=5(15-3)+10=60+10=70

1.) A ladder is leaning against the side so that the distance on the ground betweenthe base and the house is 7 feet.
If the ladder is 15 feet long, then what is the angle at which the ladder is leaning?

Answers

The angle at which the ladder is leaning is 62.18°.

What is trigonometry?

Trigonometry is the branch of mathematics that deals with calculating the angles of triangles or the lengths of their sides. It mainly concerned on the properties of right angled triangle.

For the given situation,

The length of the ladder = 15 feet

The distance between the house and the ladder base = 7 feet

The angle at which the ladder is leaning can be found by using trigonometric ratio, cos θ.

we know that, cos θ = (Base)/(Hypotenuse)

The figure below shows the relationship between the sides.

⇒ cos θ = (7)/(15)

⇒ θ = cos^(-1)((7)/(15) )

⇒ θ = 62.18

Hence we can conclude that the angle at which the ladder is leaning is 62.18°.

Learn more about trigonometry here

brainly.com/question/24174128

#SPJ2

Answer:

62.182°

Step-by-step explanation:

Using cos and sin you are able to find the height of the ladder from the bottom of the house to the place the top of the ladder is. You can do this by making a triangle. By using the lengths and angles already present you are able to find all angles of the triangle.
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