2 solutions
Step-by-step explanation: Discriminant D = √(-8²-4·1·(-20) =√(144)
Because D> 0, there are 2 roots
PLEASE HELP!!!! It’s timed
Evaluate the function requested. Write your answer as a fraction in lowest terms.
Triangle A B C. Angle C is 90 degrees. Hypotenuse A B is 41, adjacent B C is 9, opposite A C is 40.
Answer:
bStep-by-step explanation:
we are given opposite, adjacent and hypotenuse
and said to find cos(B)
recall trigonometric identity [tex]\cos(\theta)=\dfrac{adj}{hypo}[/tex]
let adj and hypo be 9 and 41 respectively
so
[tex] \displaystyle \: \cos( \beta ) = \frac{9}{41} [/tex]
hence our answer is b
Find the area of the trapezoid.
Answer:
A 303.66
Step-by-step explanation:
b1+b2÷2×h is the formula.
So step by step.
29.2+19=48.2
48.2÷2=24.1
24.1×12.6=303.66
The area of a trapezoid is 303.66 square in having a height of 12.6 in and its long and short bases are 29.2 in and 19 in respectively.
It is given that the trapezoid has a height of 12.6 in and its sides 19 in, 29.2 in, and 14.5 in respectively.
It is required to find the area of a trapezoid.
What is a trapezoid?It is defined as the quadrilateral having a four-sided closed shape with two sides parallel to each other.
We know the formula for the area of a trapezoid:
[tex]\rm Area = \frac{a+b}{2} \times h[/tex] Where 'a' is the long base, 'b' is the short base and 'h' is the height.
We have a = 29.2 in
b = 19 in
h = 12.6
By putting these values in the formula, we get:
[tex]\rm=\frac{a+b}{2} \times h\\\\=\frac{29.2+19}{2} \times 12.6\\\\=\rm \frac{48.2}{2} \times 12.6\\\\\rm= 24.1 \times 12.6\\\\\rm= 303.66 \ in^2[/tex]
Thus, the area of a trapezoid is 303.66 square in having a height of 12.6 in and its long and short bases are 29.2 in and 19 in respectively.
Learn more about the trapezoid here:
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This is a similar triangle please find the missing length. (?)
Describe two different ways to find the total area of the park.
Answer:
1. Combine the like terms from all 3 sections then subsite for X.
2. You can subsitue X in and solve the areas for each section, then adding up the 3 areas.
Step-by-step explanation:
The two ways to find the total area of the park are:
Add the Areas of Each Section
Use Geometric Shapes
Both methods should give us the same total area of 3x² + 175x + 1200 ft².
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
Method 1:
Add the Areas of Each Section
We can find the total area of the park by adding the areas of each section. Therefore, the total area is:
Total Area = Game field + Picnic field + Recreation area
Total Area = (x² + 95x + 450) + (x² + 45x + 450) + (x² + 35x + 300)
Total Area = 3x² + 175x + 1200 ft²
Method 2:
Use Geometric Shapes
Another way to find the total area of the park is to use geometric shapes that represent each section.
We can see that the Game field and Picnic field have the same area of
x² + 95x + 450 ft², which we can represent as a rectangle.
The Recreation area has an area of x² + 35x + 300 ft², which we can represent as a triangle.
Therefore, the total area of the park is the sum of the areas of the rectangle and triangle.
Total Area = Area of Rectangle + Area of Triangle
Total Area = (x + 15)(x + 30) + (1/2)x(x + 35)
Total Area = 3x^2 + 175x + 1200 ft^2
Thus,
Both methods should give us the same total area of 3x² + 175x + 1200 ft².
Learn more about expressions here:
https://brainly.com/question/3118662
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What is the name of the thick, lower end of the digestive tract where solid waste is gathered and leaves the body?
1)esophagus
2)liver
3)large intestine
4)small intestine
Answer:
large intestine
in the large intestine there are 3 parts that are caecum colon and rectum. good is stored in the rectum until excreted
Help me with this!!!
Answer:
yes
Step-by-step explanation:
What is the value of y?
E
(3y + 4) (5y-10)
A.)7
B.)5.5
C.)1.75
D.)6
Answer:
7
Step-by-step explanation:
3*7+4=25
5*7-10=25
Cody starts the month of April with 5 action figures. Each month, he collects an additional 3 action figures.
Write an equation (in slope-intercept form) that matches Cody's situation.
Group of answer choices
y = 3x + 5
y = 5x + 3
y = 3x - 5
y = 5x - 3
Answer:
y= 3x + 5
Step-by-step explanation:
The +5 represents the starting 5 action figures, and the 3x represents the 3 action figures he collects each month.
Work out the area of the shaded shape. 4cm 3cm 11cm 4cm
Answer:
36cm
IM TYPEING RANDOM WORDS CUZ IT SAYS ITS TOO SHORTTTTTTTTTTT
i need somebody to answer number 9 and 10
this is the last time i’m gonna post this please answer but no unhelpful answers thank you :)
Answer:
Slope (m) =
ΔX = 5 – 3 = 2
ΔY = -2 – 1 = -3
Distance (d) = √ΔX2 + ΔY2 = √13 = 3.605551275464
Equation of the line:: y = -1.5x + 5.5
Number 9 answer_ y=-1.5x+5.5
Number 10::
I'm not positive of the exact answer, only thing i found was that both equations graphed the same line
Step-by-step explanation:
1. Both of the equations shown have the same solution when solved for x. What is the value of k? Show or explain all your work.
Captionless Image
Your answer
Answer:
1
Step-by-step explanation:
you need to multiplau with is 12x+9-42
Two angles are complementary. The larger one is 3 times the measure of the
smaller one. What is the measure of the smaller angle in degrees?
Type just the numerical value.
Answer: 22.5°
Step-by-step explanation:
Complementary angles are the angles that when we add them together, they're equal to 90°.
Let the smaller angle be represented by x.
Then, the larger one will be 3 × x = 3x
We then add both angles together and equate them to 90°. Therefore,
x + 3x = 90°
4x = 90°
x = 90/4
x = 22.5°
The smaller angle is 22.5°
Write an inequality to label the shaded region of the graph
-3
2
11
X
-3
-
4
-
- 1 -2
3
4
Answer:
y < 1
Step-by-step explanation:
the value of y in the whole part is less than or equal to 1.
Beth used 1 1/4 tubes of glue on her science project. Each Tube holds 1/3 ounce of paint. Write an equation to represent the situation. How many ounces of glue did Beth use?
Answer:
5/12 ounces
Step-by-step explanation:
If each tube holds 1/3 oz of paint, the you multiply 1/3 by the number of tubes that she used. 1/3oz/tube(1.25 tubes)= 5/12 ounces
The straight lines y = px + 9, where p is a constant, and y = ½ x – 1 are perpendicular. (a) State the value of p *
Answer:
14587676
Step-by-step explanation:
Please I need help with this
Answer:
1680.25
Step-by-step explanation:
rewrite the equation in slope-intercept form.
8x-4y=20
Write a similarity statement for the triangles.
In Triangle CDE, C=60°, and D=53°. In Triangle FGH, F=60°, and H=67°
Answer:
The triangles are similar by Angle-Angle-Angle similarity
both triangles vertexes are 60°, 53°, and 67°
Step-by-step explanation:
Answer:
Step-by-step explanation:
ΔCDE ,
∠C + ∠D + ∠E = 180 {angle sum property of triangle}
60 + 53 + ∠E = 180
113 + ∠E = 180
∠E = 180 - 113
∠E = 67
ΔFGH ,
∠F + ∠H + ∠G = 180 {angle sum property of triangle}
60 + 67 + ∠G = 180
127 + ∠G = 180
∠G = 180 - 127
∠G = 53
∠C = ∠F
∠E = ∠H
∠D = ∠G
ΔCDE ~ ΔFGH ------ AA similarity
What are the multiples of 2?
Answer:
Multiples of 2: 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24...
Step-by-step explanation:
Multiple of any number is a number which can be divided exactly by that number. The Multiples of a number are formed by multiplyng it with other numbers like 1,2,3,etc.
A plane traveling with a velocity measured in meters per second, is described by vector a = 5,6). Find the
speed of the plane.
Answer:
The speed of the plane is [tex]v=1.2\: m/s[/tex]
Step-by-step explanation:
The vector (5,6) represents a point in the coordinate system time-position.
So, we have that at t = 5 s the position is x = 6.
Let's recall that the slope of this vector is the speed, then using the tangent definition:
[tex]v=\frac{x}{t}=\frac{6}{5}[/tex]
[tex]v=1.2\: m/s[/tex]
I hope it helps you!
Simplify the expression to standard form
-1/2(8x - 4) + (-5 + 3x)
Answer:
[tex] - x - 3[/tex]
Step-by-step explanation:
1) regroup term.
[tex] - \frac{1}{2} (8x - 4) + 3x - 5[/tex]
2) Simplify 1/2 ( 8x - 4 ) to 8x - 4/2.
[tex] - \frac{8x - 4}{2} + 3x - 5[/tex]
3) Factor out the common term 4.
[tex] - \frac{4(2x - 1)}{2} + 3x - 5[/tex]
4) Simplify 4( 2x - 1 ) / 2 to 2( 2x - 1).
[tex] - 2(2x - 1) + 3x - 5[/tex]
5) Expand by distributing terms.
[tex] - (4x - 2) + 3x - 5[/tex]
6) Remove parentheses.
[tex] - 4x + 2 + 3x - 5[/tex]
6) Collect like terms.
[tex]( - 4x + 3x) + (2 - 5)[/tex]
8) Simplify.
[tex] - x - 3[/tex]
Therefor, the answer is -x - 3.
The track and field coach records Ian's 400-meter race times during three practices. How much greater was the percent of change from Practice 1 to Practice 2 than from Practice 2 to Practice 3? Round to the nearest tenth.
Answer:
d. 1.5%
Step-by-step explanation:
Given - The track and field coach records Ian's 400-meter race times during three practices.
Practice 1 2 3
Time (s) 63 60 58
To find - How much greater was the percent of change from Practice 1 to Practice 2 than from Practice 2 to Practice 3? Round to the nearest tenth.
a. 7.9%
b. 4.8%
c. 3.3%
d. 1.5%
Proof -
% change from Practice 1 to Practice 2 change = [tex]\frac{60 - 63}{63}. 100[/tex]%
= [tex]-\frac{3}{63}.100[/tex]% = - 4.761904762 %
⇒% change from Practice 1 to Practice 2 change = - 4.762 %
Now,
% change from Practice 2 to Practice 3 change = [tex]\frac{58 - 60}{60}. 100[/tex]%
= [tex]-\frac{2}{60}.100[/tex]% = - 3.334 %
⇒% change from Practice 2 to Practice 3 change = - 3.3334 %
So,
- 4.461904762% - (- 3.3334%) = -4.461904762 + 3.3334 % = -1.4285 % ≈ 1.5%
∴ we get
Value = 1.5%
The correct option is - d. 1.5%
495x43
1
Taylin buys 5 ounces of tea leaves for $2.35. At this rate, how much money does
she need to buy 12 ounces of tea leaves?
$5.04
2.355-0.47
0.47 1215.64
In problem 10, how would your work be different if you were asked how many
ounces of tea leaves Taylin could buy with $10?
Answer:a) $5.64 b) 21 ounces of tea leaves
Step-by-step explanation:
Step 1
5 ounces of tea leaves can be bought with $2.35
1 ounce of tea can be bought with =$2.35/5 =$0.47
12 ounces at the same rate can be bought with
=12 x $0.47 = $5.64
b) 5 ounces of tea leaves can be bought with $2.35
? Ounces of tea leaves can be bought with $10
$2.35 =5 ounces of tea
$10 = ? ounces of tea
= (10 x 5)/2.35
=50/2.35
=21.27 rrounded to 21 ounces of tea leaves
A windowpane is 16 inches tall and the diagonal distance from one corner to the other is 20 inches . How wide is the windowpane ?
:)
2x + 3 = 23 steps for x?
Answer:
x=10
Step-by-step explanation:
work in the photo
Answer:
x=10
Step-by-step explanation:
Subtract 3 from both sides
2x=23-3
Simplify 23-3 to 20
2x=20
Divide both sides by 2
x= 2 0/2
Simplify 20/2 to 10
x=10
This my last one help
Answer:
A2 = 120
A3 = 60
A5 = 60
A6 = 120
Step-by-step explanation:
Angle 1 and 2 are supplementary, so A2 = 180 - 60, which is 120.
Angle 1 and 3 are vertical angles, which are always the same measure.
Angle 5 is alternate interior angles with 3, which means it is also 60.
Angle 6 is alternate interior angles with 4, which means it is 120.
Jasmine has twice as much money as Madison. Madison has $6 less than Devanie. Together they have $54. How much money does Madison have?
Answer:
madision be $12
Jasmine be $24
And, the devanie be $18
Step-by-step explanation:
The computation is shown below:
Madison be x
Jasmine be 2x
Devanie be x + 6
And, the total is $54
Now the equation is
x + 2x + x + 6 = $54
4x = $48
x = $12
So madision be $12
Jasmine be $24
And, the devanie be $18
A house was purchased in 2012 for $150,000 If the value of the home increases by 3% each year, what will the house be worth in the year 2015?
What is the value of x?
Answer:x = 8.5
Step-by-step explanation:
1. Combine like terms
62+75+9 = 146
2.Set up equation
146+4x = 180
3. Subtract 146 to each side
146-146 + 4x = 180-146 = 34
4. Divide by 4
4x/4 = 34/4
X= 8.5
What is the measure of the missing angle in the triangle below? (Write just the number with NO titles or words)
Answer:
30
Step-by-step explanation:
Answer:
30
Step-by-step explanation:
all triangles have a sum of 180 degrees. so 115+35=150
180-150= 30