Sophia scored 92% in a math test. If the test had 50 questions, how many did she get right? *
Answer:
46 questions correct
Step-by-step explanation:
100% = 50 questions2% = 1 question92% = 46 questionsChoose the correct preposition to complete the sentence. To facilitate a quick getaway, the cunning thief parked the car perpendicular the building.
Answer:
The answer is TO
Step-by-step explanation:
Answer:
C. To
Step-by-step explanation:
edg 2020
Which of the following functions best describes this graph?
A. y = (x-1)(x+3)
B. y =x^2-x+5
C. y = (x+1)(x+1)
D. y=x^2-5x+6
A 32-ounce package of a snack mix is 24 percent pretzels. How many ounces are pretzels?
0.706 ounces
0.768 ounces
7.06 ounces
7.68 ounces
Answer:
the correct answer is choice D. if 24 precent of the snack mix is pretzels we simply need to multiply the total number of ounces by 0.24 7.68 ounces of the snack mix will be pretzels
Hurryyyyy I’m giving brainliest
Solve for w.
16 = W/2
Answer:
W=32
Step-by-step explanation:
16x2=32
32/2=16
Cassie needs at least $140 to buy a graphing calculator for math class. Currently she has $30 saved and her neighbor tells her she can babysit and earn $10 an hour. What is the minimum number of hours Cassie will need to babysit in order to have enough money to buy the calculator?
The equation needs to have a inequality not a equal sign with work. Please help
Answer:
11
Step-by-step explanation:
140 - 30 =110
110 ÷ 10 = 11
answer is 11 hours
please help due in 2 min will give max points
Answer:
x = 4
Step-by-step explanation:
(7x - 2) + (3x + 9) = 10x + 7
(10x + 7) + (8x - 6) = 18x + 1
18x + 1 = 73
18x = 72
72/18 = x
x = 4
The number of fish in a lake decreased by 25% between last year and this year. Last year there were 60 fish in the lake. What is the population this year?
Answer:
This population, the population is 45 fish.
Step-by-step explanation:
This problem can be solved by a rule of three.
Last year there were 60 fish in the lake. That was 100, that is, decimal 1.
This year it decreased 25%. So there 100%-25% = 75%, that is decimal 0.75. So
60 fish - 1
x fish - 0.75
x= 60*0.75
x=45
This population, the population is 45 fish. Please make the brainliest.
60-25% of 60 =number of fish this year
60-25/100 x 60
60-15
45 fish are present in the lake
Write an equation of a line parallel to this line:
y - 1 = -3(x + 4)
Answer:
Step-by-step explanation:
y-1 =-3x-12
Equation of a line is y=mx+c
y=-3x-12 +1
y= -3x -11
parallel lines men you can use the same gradient so e,g y=-3x+12
If 20miles is 1/2 inches how and there is 3.125 inches how many miles
Answer:
3.125 inches would result in 122 miles.
Step-by-step explanation:
We can figure this out using proportions.
[tex] \frac{20 \: miles}{ \frac{1}{2} \: inches} = \frac{x}{3.125 \: inches} \\ \\ \frac{ \frac{1}{2}x }{ \frac{1}{2} } = \frac{62.5}{ \frac{1}{2} } \\ \\ x = 122[/tex]
122 miles would be the answer.
Answer:
125 miles
Step-by-step explanation:
[tex]\frac{20}{\frac{1}{2}}=\frac{x}{3.125}\\x=40 \times 3.125=125 \\x=125~miles[/tex]
HELP ASAPP PLEASE OR ELSE I WILL FAIL CLASS
Please help me! Brainliest + 15 pts!
A piano tuner charges $63 for 1.5 hours of work. Which proportion can be used to find x, the number of dollars the Piano tuner charges for 4 hours of work?
A: x/4 = 1.5/63
B: x/63 = 3.5/2.5
C: x/63 = 1.5/4
D: x/4 = 63/1.5
Please answer correctly and thanks! :)
Answer:
I think it is D , but if it not plz forgive me
Answer:
d
Step-by-step explanation:
cotA . cos(30°-A) - sin ( 30°- A) = ✓3÷2
Answer:
cotA. cos(30° - A) - sin(30° - A) = √3/2
⇔
Step-by-step explanation:
*
What is the slope of the equation 2x - 5y = 20?
Answer:
Dividing two negative values results in a positive value. Reorder −4 - 4 and 2x5 2 x 5 . Rewrite in slope-intercept form. Using the slope-intercept form, the slope is 25 .
Prove that 3+2 root 3 is irrational
Answer:
Hi friend,
Let 3+2√3 is a rational number.
A rational number can be written in the form of p/q.
3+2√3=p/q
√3=p/2q-3
√3=p-6q/2q
p,q are integers then (p-6q)/2q is a rational number.
But this contradicts the fact that √3 is an irrational number.
So,our statement supposed is false.
Therefore,3+2√3 is an irrational number.
Step-by-step explanation:
Answer:
in the explanation
Step-by-step explanation:
The sqrt of 3 is irrational. Any rational number multiplied or divided with an irrational number is also irrational (2 root 3). It's the same for addition and subtraction, any rational number added or subtracted from an irrational number is also irrational (2 + root 2).
Hope this helps!
Decide if the expressions in each pair are equivalent. Explain how you know.
x + x + x + x and 4x
5x and x + 5
Answer:
20x²+5x+5
Step-by-step explanation:
any more help just ask
what is the numbers in PI {pi} im confused is it 3.4578949 or is it 3.5478749?
Answer:
just use the pie sign in your calculator
pi = 3.1415926535898
This is something you either memorize, have on a flashcard, or just let your calculator handle the details. The digits of pi are effectively random and do not repeat with a known pattern.
PLEASE HELP IM SO STRESSED RN HDHHSH
Answer:
If we want to cover the base of the prism having dimensions 2 cm × 1 cm with cm length of cube, then there will be (4 × 2) = 8 cubes that can occupy the base.
Step-by-step explanation:
8. 3x+10=14y
8х -7y= 34
Answer:
hey, are these two questions or one simultaneous question?
A parachutist's rate during a free fall reaches kilometers per hour. What is this rate in meters per second? At this rate, how many meters will the parachutist fall during seconds of free fall? Do not round your answers.
Complete question :
A parachutist's speed during a free fall reaches 162 kilometers per hour. What is this speed in meters per second? At this speed, how many meters will the parachutist fall during 20 seconds of free fall? Do not round your answers.
Answer:
45 m/s ; 900 meters
Step-by-step explanation:
Given that :
Speed = 162 kilometers per hour ;
The speed in meters per second can be found by:
162 km/hr = (162 * 1000)m / (60 * 60) second
162 km/hr = 162000m / 3600 s
162 km/hr = 45 m/s
At this speed, how many meters will the parachutist fall during 20 seconds of free fall?
Speed of free fall = 45m /s
Distance in meters after 20 seconds :
(45 m/s * 20s) = 900 meters
please help i have to get this all done by tommorw
what is the derivative of ( 2w^2+1 ) ?
If you know about the power rule,
d/dw (2w² + 1) = 2 d/dw (w²) = 2 • 2w = 4w
If you have to use the limit definition of the derivative, let f(w) = 2w² + 1. Then
[tex]f'(w)=\displaystyle\lim_{h\to0}\frac{f(w+h)-f(w)}h[/tex]
[tex]f'(w)=\displaystyle\lim_{h\to0}\frac{(2(w+h)^2+1)-(2w^2+1)}h[/tex]
[tex]f'(w)=\displaystyle\lim_{h\to0}\frac{2(w^2+2wh+h^2)-2w^2}h[/tex]
[tex]f'(w)=\displaystyle\lim_{h\to0}\frac{4wh+2h^2}h[/tex]
[tex]f'(w)=\displaystyle\lim_{h\to0}(4w+2h)=\boxed{4w}[/tex]
Heather paid $2,022.30 for a computer. If the price paid includes a 7% sales tax, which of the following equations can be used to determine the price of the computer after tax? (Let x represent the cost of the computer and y represent the total cost after tax.)
Answer:
The equation should be
2,022.30 x .07= x
X+2022.30= final sale price
Step-by-step explanation:
in standard form is 63,029
Answer:
60000 + 3000 + 29
Step-by-step explanation:
The Standard form of 63029 is
60000 + 3000 + 29
-TheUnknownScientist
Hello! Can someone please help me with these 2 questions! thank you so much! (i’ll give brainlist)
Answer:
1) 4 2)1/5 X=10
Step-by-step explanation:
Small to large is a fraction
Large to small is a whole number
A large bucket holds 5 gallons of water, which is about the same as 19 liters of water. A small bucket holds 2 gallons of water. About how many liters does it hold? Show all of your work.
Answer: It will hold 7.6 Litres
Step-by-step explanation:
Step 1
We know that Converting Gallons to Litres, we have that
I gallon = 3.78541
So from the question
A large bucket = 5gallons which in Litres became
5 x 3.78541=18.927 rounded up to 19litres.
-- Also IF 5 Gallons = 19 Litres
Then 1 Gallon = 19/5= 3.8 Litres
Step 2
IF large bucket of 5 gallons = 19 Litres ,
A small bucket of 2 gallons of water = 2 x 19/5= 38/5 =7.6 Litres
At the end of 2006, the population of Riverside was 400 people. The population for this small town can be modeled by the equation below, where t represents the number of years since the end of 2006 and P represents the number of people. Based on this model, approximately what was the increase in the population of Riverside at the end of 2009 compared to the end of 2006?
The correct format of the question is
At the end of 2006, the population of Riverside was 400 people. The population for this small town can be modeled by the equation below, where t represents the number of years since the end of 2006 and P represents the number of people. [tex]P = 400 ( 1.2 )^ t[/tex] Based on this model, approximately what was the increase in the population of Riverside at the end of 2009 compared to the end of 2006?
(A) 291
(B) 691
(C) 1040
(D) 1440
Answer:
The increase in the population at the end of 2009 is 291 people
Step-by-step explanation:
We are given the equation as [tex]P = 400 ( 1.2 )^ t[/tex]
where
P = No of People
t= No of Years
it is given that in the year 2006 the population is 400
this will only happen when we take t= 0
so for
Year value of t
2006- t = 0
2007- t = 1
2008- t = 2
2009 t = 3
No of people in 2009 will be
[tex]P = 400(1.2)^3[/tex]
= 400*1.728
P = 691.2
Since the equation represents no of people so it can't be in decimals, Therefore the population will be 691
Increase = P(2009) - P(2006)
= 691 - 400
= 291
The increase in the population at the end of 2009 is 291 people.
Complete the explanation of how an estimate helps you to place the decimal point when multiplying 1.8 × 5.4.
Which of the two elements below have similar properties?
Chlorine (CI) and Zinc (Zn)
Sodium (Na) and Fluorine (F)
Potassium (K) and Francium (Fr)
Magnesium (Mg) and Helium (He)
Answer:
C
Step-by-step explanation:
Find the cost price of the following
Selling price: 55$, Profit 10%
Step-by-step explanation:
If cost price = A $
110/100 × A = 55
A = 55 × 100/110
= 50 $
Cost price 50 $
