Answer:
-4, -12
Step-by-step explanation:
Write the word sentence as an equation. 9 times a number b is 36. An equation that represents this sentence is
Answer:
9*b=36
Step-by-step explanation:
Or b=36/9 =>4
..........
Answer:
9*b=36
Step-by-step explanation:
if you could do the math yourself it would turn out to be 9*b=36
Calculate the length of the unknown side of this right-angled triangle.
9 cm
8 cm
Answer:
12.04
Step-by-step explanation:
Formula:
a² + b² = c²
8² + 9² = c²
64 + 81 = c²
145 = c²
c = 12.04
The graph of a sine function is shown. Plot the line that represents the midline of this periodic function.
Answer: The midline should be a horizontal one, at y=4
Step-by-step explanation: See above answer.
Midline of the periodic function given in the picture will be y = 4.
Mid-line of the periodic function: Midline of a periodic function is the line located half-way between the maximum and the minimum values.
From the graph attached in the question,
Maximum value of the periodic function → y = 5
Minimum value of the function → y = 3
Midline of the function → [tex]y=\frac{3+5}{2}[/tex] ⇒ y = 4
Therefore, midline of the periodic function given in the picture will be y = 4.
Learn more about the midline of the periodic function here,
https://brainly.com/question/11749227?referrer=searchResults
1. Two walls of a room or being painted each measure 16 6/2' how many square feet will be painted
2. A rectangular canvas covers 225 inches on a wall if the canvas has a height of 18 inches then what is the base
Answer:
3.167 ft²
12.5 inches
Step-by-step explanation:
1.)
Measure of each wall : 16 6/2 '
Number of walls = 2
Total area to be painted :
16 6/2' * 2 = (16 + 3) * 2 = 19 * 2 = 38 inches
1 feet = 12 inches
x = 38 inches
12x = 38
x = 38 / 12 = 3.167 ft²
2.)
Area of rectangular canvas = 225
Height = 18
Base, b =?
Area of rectangle = height * base
225 = 18 * b
225 / 18 = 18b / 18
12.5 = b
Base = 12.5 inches
Interior and Exterior Angles of Polygons -
Answer:75
Step-by-step explanation:
180-64 gives you the angle not labelled which is 116 then to work out size of angle formula is 180(n-2) n being sides so 180(6-2) = 720 so 720 minus all the angles = 75 I think lol
Answer:
x = 75
Step-by-step explanation:
180-64 = 116
Since this is a hexagon (6 vertices), the angles all add up to 720
116 + 121 + 155 + x + 90 + 163 = 720
x + 645 = 720
x = 75
WILL MAKE BRAINLIEST!!!
what is the slope of each line?
Answer:
The line has a slope of 2.
Step-by-step explanation:
We can see that this line intersects (-3, -4) and (-1, 0), so it's slope, Δy/Δx, will be:
(-4 - 0) / (-3 - (-1))
= -4 / -2
= 2
the ratio of the angle measures of a pentagon is 4:5:3:8:7. what is the measure of the smallest angle. help pleasee
Answer:
geometry
The ratio of the angle measures of a pentagon is 4:5:3:8:7. What is the measure of the smallest
The sum of the interior angles of a pentagon is 180(5-2) = 540º
so
4x + 5x + 3x + 8x + 7x = 540
solve for x and sub into 3x
Please help please help
This is a quadratic function and I have to use a square roots method please help me
F(x)=3x^2+7x-20
Answer:
the answer can be 1.667 or -4
Write the equation of the line in fully simplified slope intercept form
Answer: right of the picture
Step-by-step explanation:
What is the slope and y-intercept of the function
f(x) = - 7 + 3x
A. m= 1/3 b= 7
B. m= -3 b= -7
C. m=3 b =-7
D. m= -1/3 b= 7 7
Answer: the answer is C. M= 3 and B= -7
the slope is always with the (x) and the b is by itself
Hi my brother has a question and here it is:
Wat is 1+1
I can't find it mama says its 2 but i keepp gettint 1
help me tank u
aso if u can not answ\er it call the police for help
In a time of t seconds, a particle moves a distance of s meters from its starting point, where s = 6t^2 + 4.
(a) Find the average velocity between t = 1 and t = 1 + k if (i) h = 0.1 (ii) h = 0.01 (iii) h = 0.001 Enter the exact answers.
(i) When h = 0.1, the average velocity between t = 1 and t = 1 + h is m/sec.
(ii) When h = 0.01, the average velocity between t = 1 and t = 1 + h is m/sec.
(iii) When h = 0.001, the average velocity between t = 1 and t = 1 + h is m/sec.
(b) Use your answers to part (a) to estimate the instantaneous velocity of the particle at time t = 1. Round your estimate to the nearest integer. The instantaneous velocity appears to be m/sec.
Answer:
(a)
i) [tex]V=12.6m/s[/tex]
ii) [tex]V=12.06m/s[/tex]
iii) [tex]V=12.006m/s[/tex]
(b)
[tex]V = 10m/s[/tex]
Step-by-step explanation:
Given
[tex]s = 6t^2 + 4[/tex]
Solving (a): Average velocity between t = 1 and t = 1 + h
When t = 1
[tex]t_1 = 1[/tex]
[tex]s_1 = 6t^2 + 4 = 6 * 1^2 + 4 = 6 + 4 =10[/tex]
i) h = 0.1
When t = 1 + h
[tex]t_2 = 1 + 0.1 = 1.1[/tex]
[tex]s_2= 6t^2 + 4 = 6 * (1.1)^2 + 4 = 11.26[/tex]
Average velocity is then calculated as:
[tex]V = \frac{s_2 - s_1}{t_2 - t_1}[/tex]
[tex]V = \frac{11.26 - 10}{1.1- 1} = \frac{1.26}{0.1} = 12.6[/tex]
[tex]V=12.6m/s[/tex]
ii) h = 0.01
When t = 1 + h
[tex]t_2 = 1 + 0.01 = 1.01[/tex]
[tex]s_2= 6t^2 + 4 = 6 * (1.01)^2 + 4 = 10.1206[/tex]
Average velocity is then calculated as:
[tex]V = \frac{s_2 - s_1}{t_2 - t_1}[/tex]
[tex]V = \frac{10.1206 - 10}{1.01- 1} = \frac{0.1206}{0.01} = 12.06[/tex]
[tex]V=12.06m/s[/tex]
ii) h = 0.001
When t = 1 + h
[tex]t_2 = 1 + 0.001 = 1.001[/tex]
[tex]s_2= 6t^2 + 4 = 6 * (1.001)^2 + 4 = 10.012006[/tex]
Average velocity is then calculated as:
[tex]V = \frac{s_2 - s_1}{t_2 - t_1}[/tex]
[tex]V = \frac{10.012006 - 10}{1.001- 1} = \frac{0.012006 }{0.001} = 12.006[/tex]
[tex]V=12.006m/s[/tex]
Solving (b): Instantaneous velocity at t = 1
When t = 1
[tex]t = 1[/tex]
[tex]s = 6t^2 + 4 = 6 * 1^2 + 4 = 6 + 4 =10[/tex]
Velocity is:
[tex]V = \frac{s}{t}[/tex]
[tex]V = \frac{10}{1}[/tex]
[tex]V = 10m/s[/tex]
Which is the graph of y=-x-3?
Either graph A or C, i'm leaning more towards A
A
Step-by-step explanation:
because slope is 3/4 and y-intecept is (0,-3)
Chapman wants to buy a pair of AirPods however he currently has only 20 he then decides to begin saving his monthly allowance until he has enough for his purchase. After two months, he has saved a total of $66, including his initial $20. Select the linear equation that models S, The total amount of money he will have saved, X months after he begins saving his allowance
Answer:
C
Step-by-step explanation:
i think its c but i cant be to sure im only in the 7th grade :) i hope its right
Andrea receives a $40 gift card to use at the roller skate rink. It costs her $8 per visit to skate. Write a function relating the value of the gift card, v, in terms of the number of visits,n
Answer:
its b
Step-by-step explanation:
Answer:
Step-by-step explanation:
b
a soccer team lost 30% of their games. If they played 20 games, how many did they win
Answer:
14
Step-by-step explanation:
100% - 30%= 70% (the times they've won)
0.7x20=14
Area of composite shapes!!
Answer:
Step-by-step explanation:
Divide it into a 3-by-3 square and a right triangle with legs that are 3 and 4.
area of square = 3² = 9 units²
area of triangle = ½×4×3 = 6 units²
total area = 9+6 = 15 units²
Is x=3, y=2 a solution to the system of equations shown? Justify your answer.
y = 2x - 4
3x + 2y = 8
Answer:
It is not a solution.
Step-by-step explanation:
y = 2x - 4
2 = 2(3) - 4
2 = 6 - 4
2 = 2
The point is a solution to the first equation.
3x + 2y = 8
3(3) + 2(2) = 8
9 + 4 = 8
11 ≠ 8
The point is only a solution for one equation. It is not a solution to the system.
Hope this helps.
which Is NOT a linear function?
I think its Y = x+ 3
Solve the system of equations x – 3y = 1 and 2x + 2y = 18 by combining the
equations.
Elis, Raine and Avery buy a boat for $33 000.
Elise pays $12 000, Raine pays $6000 and Avery pays the rest.
Six years later they sell the boat for $25 300.
They share the money in the same ration that they bought the boat.
How much money does Avery lose on the sale of the boat?
Amount Avery paid: 32,000-12,000-6,000 = 15,000
Divide portion she paid by total cost:
15,000/33,000
Simplify to 15/33
Multiply the amount the boat was sold for by her portion:
25,300 x 15/33 = 11,500
Subtract the amount she got from the amount she paid:
15,000 - 11,500 = 3,500
She lost $3,500
Answer:
yes
Step-by-step explanation:
yes!
5.5 + n = 10 please help
Answer:
n = 4.5
Step-by-step explanation:
10 - 5.5 = n
Answer:
I feel like its 4.5
Step-by-step explanation:
what is the area of the shaded region ?
Answer: The area is 8 it litterally tells you there
Step-by-step explanation:
can i get help plssss???
Answer:
B
Step-by-step explanation:
I know why im smart im in college
all a on my grades is B trust me
find the unknown sizes of angle in the following figures
Answer:
each missing angle is 120°
Step-by-step explanation:
What you have is a kite so the two missing angles are equal.
The sum of all four angles = 360°
2y = 360° - 88° - 32° = 240°
y = 120°
HELP PLEASE ANYONE STEP BY STEP TIMED
Answer:
[tex]\huge\boxed{\text{B) 4}}[/tex]
Step-by-step explanation:
We can use the properties of some of these circles to solve and find the value of x.
FIrst off - we know that to find the side of a right triangle we can use the Pythagorean Theorem, which states that [tex]a^2 + b^2 = c^2[/tex] (a and b being legs, c being the hypotenuse.)
Finding the hypotenuseWe also know that this triangle is in a circle. Part of the hypotenuse and the altitude of the triangle are in the circle.
Point W is the center of the circle. Therefore, any points stretching to the edge from it will be equal (since this is a circle).
With this knowledge - UW and WZ are equal.
Therefore, since UW is [tex]x-1[/tex], WZ will be too.
We also know the length of VZ. We can add this to WZ to find the length of the whole hypotenuse.
[tex]\displaystyle x-1+2 \\ x+1[/tex]
So the length of the hypotenuse, WV, is [tex]x+1[/tex].
Finding the value of xNow that we know the length of the hypotenuse, we can use the Pythagorean Theorem like we stated before to find the value of x.
We know the two legs are [tex]x-1[/tex] and [tex]2x-4[/tex], while the hypotenuse is
[tex]\displaystyle (x-1)^2 + (2x-4)^2 = (x+1)^2[/tex] [tex](x^2 - 2x + 1) + (4x^2-16x+16) = (x^2 + 2x + 1)[/tex] (use FOIL to find the value of each expression squared) [tex]5x^2 - 18x + 17 = x^2 + 2x + 1[/tex] (simplify the left side) [tex]4x^2 -20x + 16 = 0[/tex] (subtract both sides by [tex]x^2 +2x + 1[/tex]) [tex]x = \frac{{ -b \pm \sqrt {b^2 - 4ac} }}{{2a}}[/tex] (Quadratic formula) [tex]\frac{{ -(-20) \pm \sqrt {(-20)^2 - 4 \cdot 4 \cdot 16} }}{{2 \cdot 4}}[/tex] (plug in values from equation) [tex]\frac{{ 20 \pm \sqrt {400 - 256} }}{8}}[/tex] (simplify) [tex]\frac{{ 20 \pm \sqrt {144} }}{8}}[/tex] (simplify) [tex]\frac{{ 20 \pm 12 }}{8}}[/tex] (simplify) [tex]\displaystyle x = \frac{20+12}{8} \ \text{and} \ \frac{20-12}{8}[/tex] (use plus/minus to find two roots) [tex]\displaystyle x = \frac{32}{8} \ \text{and} \ \frac{8}{8}[/tex] (simplify) [tex]\displaystyle x = 4 \ \text{and} \ 1[/tex]1 can not be a possible answer because UW would end up being [tex](1-1) = 0[/tex] units long! This isn't possible!
Therefore, the correct answer would be B) 4.
Hope this helped!
There is a theory that children wearing superhero costumes are more likely to harm themselves because of the unrealistic impressions of invincibility that these costumes could create. Below there is data about the severity of injury (on a scale from 0, no injury, to 100, death) for children reporting to the emergency center at hospitals and information on which superhero costumes they were wearing (Spiderman, Superman, Batman).
Spiderman Superman Batman
55 68 26
31 32 47
58 85 30
20 69 35
47 58 53
37 52 43
Compute the following descriptive statistics for each group. (30 points total)
a. Mean
b. Sample size (n) for each group
c. Standard Deviation
d. Square root of n
e. Standard error of the mean (SEM)
Answer:
[tex]Mean = 47[/tex]
[tex]n = 6[/tex]
[tex]s= 16.56[/tex]
[tex]\sqrt n = 2.45[/tex]
[tex]SEM = 11.55[/tex]
Step-by-step explanation:
Given: The above data
Solving (a): Mean of each group
Mean is calculated as:
[tex]Mean = \frac{\sum x}{N}[/tex]
[tex]Mean = \frac{55 + 31 + 58 + 20 + 47 + 37+68 + 32 + 85 + 69 +58 + 52+26 + 47 + 30 +35 + 53 + 43}{18}[/tex]
[tex]Mean = \frac{846}{18}[/tex]
[tex]Mean = 47[/tex]
Solving (b): The sample size of each group
This is the number of rows in each group.
Hence:
[tex]n = 6[/tex]
Solving (c): Standard deviation (s)
This is calculated as:
[tex]s = \sqrt{\frac{\sum (x - \bar x)^2}{N}}[/tex]
So, we have:
[tex]s= \sqrt{\frac{(55 - 47)^2 + (31 - 47)^2 +......... + (43 - 47)^2}{18}}[/tex]
[tex]s= \sqrt{\frac{4936}{18}}[/tex]
[tex]s= \sqrt{274.22}[/tex]
[tex]s= 16.56[/tex]
Solving (d): Square root of n
[tex]\sqrt n = \sqrt 6[/tex]
[tex]\sqrt n = 2.45[/tex]
Solving (e): SEM
This is calculated as:
[tex]SEM = \frac{s}{\sqrt N}[/tex]
[tex]SEM = \frac{47}{\sqrt{16.56}}[/tex]
[tex]SEM = \frac{47}{4.07}[/tex]
[tex]SEM = 11.55[/tex]
Which scenario represents a proportional relationship?
Question 2 options:
Bob is a bellhop at the hotel and makes $12.50 per
hour plus tips.
Richard works at a Fire Department and earns $15.00 per hour.
Mr. Bridges has a plumbing business and charges $45.00 an hour plus
a $11.00 service fee.
Sally works at Build-a-Bear Workshop and creates cute, cuddly
stuffed animals. She earns $10.00 per hour and accepts tips.
Answer:
The answer should be B
Step-by-step explanation:
I hope this helps! Let me know if I am wrong.
6 ft = ____ yd
6 ft = 6 x 1 ft
= 6 x ____ yd
= ____ yd
Answer:
6 ft = 2 yd
6 ft = 6 x 1 ft
= 6 x 2 yd
= 12 yd
Please help me with the math please?
Answer:
count how many flowers there are on number 1
Answer:
okay so 3. equals 20
4. 1st one 2nd one 3rd one equals 30
5. first one 2nd one 3rd one equals 30
6. first one second one equals 20
7. first one second one equals 20
Step-by-step explanation: