Answer:
€24
Step-by-step explanation:
If he had €80 and spent 0.3 of it, he spent 30% or 30/100 of it.
€80*[tex]\frac{30}{100}[/tex] = €80*[tex]\frac{3}{10}[/tex] = €24.
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If f(x) is a linear function, f( – 4) = 4, and f(1) = – 5, find an equation
for f(x).
If using the method of completing the square to solve the quadratic equation x^2-19x+23=0x
2
−19x+23=0, which number would have to be added to "complete the square"?
The number that needs tο be added tο cοmplete the square is 90.25.
What is the quadratic equatiοn?In algebra, a quadratic equatiοn is any equatiοn that can be rearranged in standard fοrm as where x represents an unknοwn value, and a, b, and c represent knοwn numbers
Tο cοmplete the square fοr the quadratic equatiοn x² - 19x + 23 = 0, we need tο add a number that is equal tο half οf the cοefficient οf x (which is -19) squared.
Sο,
(-19/2)² = 90.25
Therefοre, we need tο add 90.25 tο bοth sides οf the equatiοn:
[tex]x^2 - 19x + 23 + 90.25 = 90.25[/tex]
Then we can rewrite the left side as a perfect square:
[tex](x - 9.5)^2 = 90.25[/tex]
Now we can take the square root of both sides to solve for x:
x - 9.5 = ±√(90.25)
x = 9.5 ± 9.5√(2)
Hence, the number that needs to be added to complete the square is 90.25.
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Answer: 90.25
Step-by-step explanation:
Nam-Joon created a painting with an area of 30 square feet and a length of 5 feet. He creates a second painting with an area of 24 square feet. It has the same width as the first painting. What is the length of the second painting
Answer:
4 feet
Step-by-step explanation:
Divide 30 by 5 to get the width of the first painting, 6 feet. Divide 24 by 6 to get the length of the second painting, 4 feet.
Hopefully this helps- let me know if you have any questions!
Is Y=5 and Y=-1 consider parallel perpendicular or neither show your work
Answer:
They are parallel.
hope i helped! (put graph down below)
Step-by-step explanation:
what is the equation of a line that is perpendicular to -x+7y=42 and goes through (-2,-1) in slope intercept form
Answer:
y = -7x - 15Step-by-step explanation:
Perpendicular lines have negative reciprocal slopes
Given line
- x + 7y = 42In slope-intercept form it is
- x + 7y = 427y = x + 42y = 1/7x + 6Perpendicular line has slope - 1/(1/7) = - 7 and its equation is:
y = - 7x + bFinding b using the point (-2, -1)
-1 = -7(-2) + b-1 = 14 + bb = -1 - 14b = -15So the line is
y = -7x - 15Find three consecutive even numbers such that five times the smallest number is equal to twice the sum of the other two number
Answer:
let the integers be n, n+2 and n+4
5(n+4) = 2(n + n+2) +42
5n +20 = 4n +4+42
n = 46 -20 = 26
Step-by-step explanation:
I think
8. Use the general formula for an exponential function, f(x) = a. b, to write a specific function given an
initial value of 61 and a growth factor of 3.5.
Answer: f(x) = 61(3.5)^x
Step-by-step explanation:
This is what the variables always mean in the function:
a = initial value
b = growth factor
x = time
Then, you just plug them in! Hope this helps.
Please show work if there is any
Josh mowed ⅘ of a yard in ⅖ of an hour. How many yards can Josh mow in 1 hour?
Molly bought 5 pounds of apples for $7.95, how much did each pound cost.
Ella worked 22 hours and got paid 249.26. How much did she make an hour?
If Robin drove ⅔ of a mile in 1/12 of an hour, how far can she drive in 1 hour?
At batting practice tj had 20 baseballs pitched to him. He hit the ball 17 times
Answer:
340
Step-by-step explanation:
Its a simple multiplication problem you just have to multiply 20 x 17 = 340
Hope this helps! :)
I need Help please! I am on a math quiz and am stuck
Answer:
uh i think is uh carrot
Step-by-step explanation:
Answer:
64cm
Step-by-step explanation:
What is y=-4x-4 in standard form
Answer: 4x + y = -4
Step-by-step explanation:
The standard form of a linear equation is Ax + By = C.
y = -4x - 4
Add 4x on both sides
4x + y = -4
Find the quotient.
(-6) ÷ (-7)
6/7
-6/7
-42
42
The two negatives cancel out when we divide or multiply. Think of negative as opposite. Having two opposites cancel.
The slash means fraction and it also means division
6/7 = 6 divided by 7
6/7 = six sevenths
So that allows us to go from fraction to decimal form 6/7 = 0.857 approximately after using your calculator or long division.
add one line to each of the diagrams below so that the resulting figure has rotational symmetry but no line symmetry.
Answer:
Pardon my sloppy drawing.......
16/17 as a decimal rounded to the nearest hundredth
Answer:
the answer is 0.94
Step-by-step explanation:
16/17 = 0.941176470588
the hundreths place is where the 4 is, and to the right of the 4 is a one, if its under 5 then dont round up so your answer will remail 0.94.
hope this helps have a great day!
Solve the system: 2x – 6y + 4z = 3
-3x + 9y – 6z = -3
5x – 15y + 10z = 5
Answer:
7
Step-by-step explanation:
i hope this is right, I did the math
14 gallons of gas is $19.46. how much would it cost to get 9.5 gallons
Answer:
13.205
Step-by-step explanation:
19.46 divided by 14
= 1.39
Multiply 1.39 with gallons given:
=(9.5)(1.39)
= 13.205
Therefore, it would cost $13.21 to get 9.5 gallons of gas.
When solving an ______, use inverse operations to undo the operations.
[tex][Hello,BrainlyUser][/tex]
║ Answer ║Equation
Step-by-step explanation:
Inverse operations are used to solve simple algebraic equations to more difficult equations that involve exponents, logarithms, trigonometry, etc
Thus, When solving an equation, use inverse operations to undo the operations.
[CloudBreeze]
Answer:
equation
Step-by-step explanation:
When solving an equation, use inverse operations to undo the operations.
Which value can be placed under the radical symbol to make this statement true?
Answer:
D) 875
Step-by-step explanation:
5∛7
= ∛5³ x 7
= ∛125 x 7
= ∛875
The answer is :-
D) 875
Answer:
[tex] \sqrt[3]{x} = 5 \sqrt[3]{7} \\ {x}^{ \frac{1}{3} } = 5( {7}^{ \frac{1}{3} } ) \\ {( {x}^{ \frac{1}{3} } )}^{3} = (5( { {7}^{ \frac{1}{3} } )}^{3} \\ x = {5}^{3 } 7 \\ x = 125 \times 7 \\ x = 875 \\ the \: answer \: is \: d \: 875[/tex]
help me pls
Find the value of x.
Answer:
33
Step-by-step explanation:
The bottom angle is a completely straight line, and that means the angle is 180 degrees.
180 - 81 = 99
So, this means 3x = 99. We need to isolate the variable, so we have to divide everything by 3.
x = 33
Answer:
waaait i know how to do this lol ( i feel like this is correct)
x = 33
Step-by-step explanation:
so a line is 180 right?
so make the equation like this
180 = 81 + 3x
now solve for x by doing algebra
(minus both sides by 81)
3x = 99
x = 33
If f(x) = 5x +40, what is (fx) when x =-5?
a -9
a -8
c 7
d 15
Answer:
D.
Step-by-step explanation:
f(x) = 5x+40
f(-5) = 5(-5)+40
f(-5) = -25+40
f(-5) = 15
Dana helped her dad build a sandbox for her younger sister. The sandbox is shaped like a rectangular prism that is 4 1 2 feet long and 4 feet wide. Dana used bags of sand to fill the sandbox 1 2 of a foot deep. Each bag contains 1 2 of a cubic foot of sand. How many bags of sand did Dana use?
The number of bags of sand needed to fill the sandbox is 18 bags
How to find volume of a rectangular prismLength = 4 1/2 ftWidth = 4 ftHeight = 1/2 ftQuantity of each bag of sand = 1/2 ft³Volume = L × W × H
= 4 1/2 × 4 × 1/2
= 4.5 × 4 × 0.5
= 9 ft³
Number of bags of sand needed to fill the sandbox = volume of the sandbox ÷ quantity of each bag
= 9 ft³ ÷ 1/2 fr³
= 9 × 2/1
= 18 bags
Learn more about rectangular prism:
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solve
4x-1/2=x+7
3x+2=2x+13/3
Answer:
first one is x= 5/2 second one is x= 7/3
if a fration can be written as a repeating deciamal, only one dgit can repeat over and over, wothout end. true or false
Answer: False
Step-by-step explanation:
Does anyone know the answer?
Answer:
4/19
Step-by-step explanation:
PLEASE HELP
Select the correct answer.
Simplify the expression.
3.1 648x478
OA. 18.12y2 2,42
Ов. 18х2у2 /3xy 2
OC. 188723x2y2
OD. 9x2y/2x42
Chiara had $5,700 in medical expenses last year. Her medical insurance covered 80% of these expenses. The IRS allows medical and dental expenses deductions for the amount that exceeds 7.5% of a taxpayer’s adjusted gross income. If Chiara’s adjusted gross income is $35,432, how much can she claim as a medical deduction? Explain
Using proportions, it is found that she can claim amounts greater than $2657.4 as a medical deduction.
What is a proportion?A proportion is a fraction of a total amount.
In this problem, her adjusted gross income is $35,432, and she can claim deductions for amount's that exceed 7.5% of this, hence:
0.075 x 35,432 = $2657.4.
She can claim amounts greater than $2657.4 as a medical deduction.
More can be learned about proportions at https://brainly.com/question/24372153
A medical delivery services charges $10 for a house call plus $0.50 per mile. The situation is represented by the equation c=0.5m+10 where m represents the number of miles the delivery is from the office and c represents the cost of the delivery. Calculate the total cost of a medical service delivery if the number of miles driven is 75.5 miles. Write your answer as an ordered pair (m,c).
Answer:
$47.75
Step-by-step explanation:
Where are given that the cost of medical service delivery is given by the expression
c=0.5m+10
m= the number of miles
when the number of miles is 75.5 mile we want to find the cost
put m=75.5 in the expression
c=0.5(75.5)+10
solving for c we have
c=37.75+10
c=47.75
Therefore the cost will be $47.75 for a distance of 75.5miles
PLEASE ANSWER Solve for x. Round to the nearest tenth, if necessary.
Answer:
above is the solution to the question
find the length for x
Answer: 6
Step-by-step explanation:
By the triangle midsegment theorem, x=3(2)=6.