What is the value of x?
Answer:
x = 4√5
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASTrigonometry
Pythagorean Theorem: a² + b² = c²Step-by-step explanation:
Step 1: Define
We are given a right triangle. We can use Pythagorean Theorem.
a = 19
b = x
c = 21
Step 2: Find x
Substitute: 19² + x² = 21²Isolate x term: x² = 21² - 19²Evaluate: x² = 441 - 361Subtract: x² = 80Isolate x: x = √80Simplify: x = 4√5And we have our final answer!
Divide
x= 8.1/-0.30
This needs to be divided
5x-20
x² - 4x + 18
X-4 니
y2-4+18
Answer:
graph it
Step-by-step explanation:
A lunch bill costs $40. If you want to leave a 15% tip, how much money should you leave for the total bill?
Answer:
The tip will be $6 and the total bill will be $46.00
Step-by-step explanation:
I need answers right now
Answer:
a m not with math dry buddy hope u find somebody to help pu
Write an equation of a line that is (a) parallel to the given line and (b)
perpendicular to the given line.
can you answer 7 too ?
Answer:
for question 7 : I think it is no
Step-by-step explanation:
if you plot the points on a quick rough sketch you will find that none of the coordinates are on the same line (which they would have to be for a straight line). No points in those 3 coordinates are the same so the there cannot be two points on the same x or y coordiante therefore there is no right-angles triangle.
If you plot the points roughly there will not be two perpendicular lines so there is no right-angles triangle.
sorry I realise this is confusing :(
Also for Question 5:
Parallel should be anything y= for example, y=6
Perpendicular should be anything x= for example x=6 as y=7 is a horizontal line and x=6 is a vertical line. Y=6 would be parallel because y=(any number with no gradient e.g. 1,2,3,4,etc.) is horizontal.
h+9.5= -9.5
find h. help pls, thank you
Bone-shaped treats are 5 for $3.50 at Shelley's store and Sarah wants to buy 12. She set up and solved this proportion to find how much they would cost. Describe her error and find the correct solution. (5/3.5)=(12/x) 3.5x=60 x=17.14.
Answer:
Her error was multiplying numerator by numerator ( that is Quantity of Bone-shaped treats)
Step-by-step explanation:
Sarah's calculation
Let
x = cost of 12 Bone-shaped treats
Quantity of Bone-shaped treats : price
5 : 3.5 = 12 : x
(5/3.5) = (12/x)
Cross product
3.5x=60 (Here is her error)
x=17.14
Correct calculation
Quantity of Bone-shaped treats : price
5 : 3.5 = 12 : x
5 / 3.5 = 12 / x
Cross product
5 * x = 3.5 * 12
5x = 42
x = 42 / 5
= 8.4
x = $8.4
Her error was multiplying numerator by numerator ( that is Quantity of Bone-shaped treats)
Instead of multiplying Quantity of Bone-shaped treats by cost
Answer:
Sarah multiplied the denominator by the denominator and the numerator by the numerator instead of finding the cross products. The equation should be 5x = 42, so the cost should be $8.40.
Step-by-step explanation:
got it wrong but this is the answer the people gave me branliest plz
13/14% of a quantity is equal to what fraction of the quantity?
Which ordered pair is the solution to the system of equations? {−3x+4y=−20y=x−4 (−4, −8) (4, 8) (−2, −6) (0, −5)
Answer:
Step-by-step explanation:
-3x + 4y = -20
y = x - 4
Put the second equation into the first equation in place of y.
-3x + 4 (x - 4) = -20
Multiply everything in the parenthesis by 4.
-3x + 4x - 16 = -20
Combine like terms.
x - 16 = -20
Add 16 to both sides.
x = -4
Put this into the second equation in place of x.
y = -4 - 4
y = -8
Your solution set is (-4,-8).
Hope this helps!
Answer:
(-4,8)
Step-by-step explanation:
There are y boats on a lake.
There are 7 people in each boat.
Write an expression, in t|sms of y, for the total number of people in the boats.
Answer:
The answer is 7y.
Thank you and please rate me as brainliest as it will help me to level up
Total number = 7y
The total number of boats on the lake = y
There are 7 people in each of the boats . The means in every boats available in the lake 7 people are occupying it .
Therefore, the total number of people in the boats can be express as follows:
Total number = 7y
Read more : https://brainly.com/question/17565311?referrer=searchResults
Hazel runs for 3/4 hour and stretches For 1/5 hour. Complete the expression to model the time hazel exercises. Write equivalent fractions using the least common denominator. +
Please respond quickly will give brainliest ‼️‼️
Answer:
3/4*46,777777(de) drop the 4 and you get 1/5
Step-by-step explanation:
The inequality that will determine the number of months, x, that are required for the second phone to be less expensive is . The solution to the inequality is . Sal's mother would have to keep the second cell phone plan for at least months in order for it to be less expensive.
Question:
Sal is trying to determine which cell phone and service plan to buy for his mother. The first phone costs $100 and $55 per month for unlimited usage. The second phone costs $150 and $51 per month for unlimited usage.
The inequality that will determine the number of months, x, that are required for the second phone to be less expensive is .
The solution to the inequality is .
Sal’s mother would have to keep the second cell phone plan for at least months in order for it to be less expensive.
Answer:
a. [tex]150 + 51x < 100 + 55x[/tex]
b. [tex]x > 12.5[/tex]
c. At least 13 months
Step-by-step explanation:
Given
First Phone;
[tex]Cost = \$100[/tex]
[tex]Additional = \$55[/tex] (monthly)
Second Phone;
[tex]Cost = \$150[/tex]
[tex]Additional = \$51[/tex] (monthly)
Solving (a): The inequality
Represent the number of months with x
The first phone is expressed as:
[tex]100 + 55x[/tex]
The second phone is expressed as:
[tex]150 + 51x[/tex]
For the second to be less expensive that the first, the inequality is:
[tex]150 + 51x < 100 + 55x[/tex]
Solving (b): Inequality Solution
[tex]150 + 51x < 100 + 55x[/tex]
Collect Like Terms
[tex]51x-55x<100 - 150[/tex]
[tex]-4x<-50[/tex]
Solve for x
[tex]x > -50/-4[/tex]
[tex]x > 12.5[/tex]
Solving (c): Interpret the solution in (b)
[tex]x > 12.5[/tex] implies 13, 14, 15....
Hence, She'll keep the second phone for a period of at least 13 months
Answer:
I'm terrible at explaining so here's a screenshot
- Ripper
Step-by-step explanation:
what is the least common denominator of2/3and 5/8
Answer:
16
Step-by-step explanation:
3 and 8 can both go into 16
a line containing the points (4,4) and (8,9)
Answer:
im assuming slope : 5/4 is slope
Step-by-step explanation:
the formula (y₂ - y₁) / (x₂ - x₁) is how you get slope. plug stuff in and you get (9 - 4) / (8 - 4) and thats 5/4
Answer:
y=1.25x-1
Step-by-step explanation:
Hope this helps! PS I'm not assuming anything
An 11-inch string is cut into 3 equal pieces. Which expression shows the length of each piece?
A. 11/3
B. 1/11 of 3
C. 3 divided by 11
D. 3÷11
Answer:
a
Step-by-step explanation:
11/3 (eleven divided by three)
$4.50 plus $3.60 per mile. Patrick paid $28.80 to ride a shuttle bus into the city. How many miles did Patrick ride on the shuttle bus?
I'm very sorry but i don't know the answer to this queshtion
Find three consecutive even integers such that the sum of the first and the third is 128.
9514 1404 393
Answer:
62, 64, 66
Step-by-step explanation:
I like to work "consecutive integer" problems by considering the average, or middle value. If we call that x, then the problem statement tells us ...
(x -2) +(x +2) = 128
2x = 128 . . . . . collect terms
x = 64 . . . . . . . divide by 2
The middle integer is 64, so the three even integers are 62, 64, 66.
PLEASE HELP, I WILL UP POINTS AND VOTE BRAINLIEST! DONT MAKE ME WASTE MY 88 POINTS.
Convert the equations in #4-6 to standard form.
#4. y = 9/7x + 1/7
#5. y = -6/5x - 3
#6. y = 1/3x - 2
Answer:
Ok im using a standered form calculator:
1. 9/7x + 1/7 = -8
2. y = -6/5x - 3 = -11
3. y = 1/3x - 2 = -10
Step-by-step explanation:
I will be glad to help more
What is the value of x in the equation 2(x-3)+9=3(x+1)+x?
O x = -3
OX=-1
O x = 0
O x = 3
Answer:
I think Its x=0
just did it on edg lol hope
The value of x in the expression is,
⇒ x = 0
What is an expression?Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
We have to given that;
The expression is,
⇒ 2 (x - 3) + 9 = 3 (x + 1) + x
Now, We can simplify the expression as;
⇒ 2 (x - 3) + 9 = 3 (x + 1) + x
⇒ 2x - 6 + 9 = 3x + 3 + x
⇒ 2x + 3 = 4x + 3
⇒ 4x - 2x = 3 - 3
⇒ 2x = 0
⇒ x = 0
Thus, The value of x in the expression is,
⇒ x = 0
Learn more about the mathematical expression visit:
brainly.com/question/1859113
#SPJ7
I NEED HELP ASAP, I'LL GIVE BAINLIEST
Find the value of each expression. SHOW YOUR WORK.
(3.4)2
33 + 10 – 2 • 6
102 ÷ 22
Answer:
Step-by-step explanation:
3.4 times 2 is 6.8
pemdas for the second one. 2 times 6 is 12. 33+10-12, 31
102/22
4.3636
Answer:
1: 6.8
Work: 3.4 divided by 2 equals 6.8
2: 246
Work: 33 plus 10 minus 2 times 6 equals 246
3: 4
Work: 102 divided by 22 equals 4
Step-by-step explanation: I hope this helps! :)
QUICK HELPPP 20 POINTS
What is the solution to the equation?
Answer:
t = 91
Step-by-step explanation:
t - 15 = 76
t - 15 + 15 = 76 + 15
t = 91
i need help and this is important.
x=
Step-by-step explanation:
look at this pic as if it was a pattern then the answer will come to you
Answer: x= 3
Step-by-step explanation:
what do I need to know to ace my test on basic constructions for geometry
Answer:
Its important to ask your teacher this alot of tests are different. But just study the general idea of what you've learned so far.
step-by-step explanation:
Answer:
perdón por no ayudar
Step-by-step explanation:
mucho texto
The Marine Discovery Aquarium sells ocean-themed cookies in their gift shop. Last month, they sold 65 shark cookies and 85 clown fish cookies. The cookies were so popular that they want to order more cookies this month. They plan to order 170 clown fish cookies this month. If they keep the same ratio, how many shark cookies should they order this month?
Answer: 130 shark cookies.
Step-by-step explanation: If you divided 170 clown fidh cookies by 85 clown fish cookies you get 2. So same as 85 times 2. Then do the same with the shark cookies. 65 times 2, that equals 130.
The diagram is not drawn to scale.
answer as m2
Answer:
Area = 76[tex]m^{2}[/tex]
Step-by-step explanation:
you can cut into two rectangles
first one:
top and bottom sides = 4m
two sides = 9m
Area = b*h = 9m * 4m = 36 [tex]m^{2}[/tex]
second one
top and bottom sides = 8m
two sides = 14m - 9m = 5m
Area = b*h = 8m * 5m = 40[tex]m^{2}[/tex]
Now add both rectangle areas for the total shaded Area = 36 + 40 = 76[tex]m^{2}[/tex]
Which could be the first step in solving the equation represented by the model below? HELP PLZ
Answer:
take away four from both -4
Answer:
add 4 negative unit tiles to both sides
Step-by-step explanation:
took test on edge
It is 2 kilometers from Frank's house to the nearest mailbox. How far is it in meters?
Answer:
2000
Step-by-step explanation:
1 kilometer= 1000 meters
2 kilometrs=1000*2
2kilometers-2000meters
Taryn and Alastair both mow lawns. Each charges a flat fee to mow a lawn. The table shows the number of lawns mowed in the past week, the time spent mowing lawns, and the money earned.
Answer:
Taryn charges $12.50, Alastiar charges $17.50, Alastair earns more per hour
This is not math but plz help here are some points
Answer:
the second one
Step-by-step explanation: