please help I'm timed
Answer:
60 students-530 Question 1.
Step-by-step explanation:
A car travelling at a constant speed travels 90km in 50 min .How far travelling at the same constant speed will the car travel in 2 hours and 25 minutes?
Answer:
261 km
Step-by-step explanation:
given,s=constant
d1/T1=d2/T2
d1=90km,t1=50 min
d2=? ,t2=(120+25)min
=145min
therefore,d2=(90×145)/50
=261 km
Aaron took a taxi from his house to the airport. The taxi company charged a pick-up fee of $2 plus $3.50 per mile. The total fare was $58, not including the tip. Which equation could be used to determine xx, the number of miles in the taxi ride?
Answer:
58=3.50x=2
Step-by-step explanation:
Simplifique a expressão [5² . 5² . 5³. 125 . 125³ ]³ : [25² . 5² . 5]²
Answer:
5^43
Step-by-step explanation:
[5² . 5² . 5³. 125 . 125³ ]³ : [25² . 5² . 5]² =
= [5² . 5² . 5³. 5³ . (5³)³ ]³ : [(5²)² . 5² . 5]²
= [5² . 5² . 5³. 5³ . 5^9 ]³ : [5^4 . 5² . 5]²
= [5^19]³ : [5^7]²
= 5^57 : 5^14
= 5^43
A space ship travels at 24 miles per hour and traveled for 28 hours.
Select the answer that represents how many miles the space ship traveled.
A 212
B 24
C 22
D 232
Answer:
2^4 = 16miles
2^8 = 256hrs
Step-by-step explanation:
16*256=4096
2^12=4096
so you answer is 2^12
Find the value of x for which (2)^3x = 8^2.
Answer:
x = 2
Step-by-step explanation:
Using the rule of exponents
[tex](a^m)^{n}[/tex] = [tex]a^{mn}[/tex]
[tex](2)^{3x}[/tex] = [tex]2^{3x}[/tex] and 8 = (2³ )² = [tex]2^{6}[/tex] , so
[tex]2^{3x}[/tex] = [tex]2^{6}[/tex]
Since the bases on both sides are equal, both 2, equate the exponents
3x = 6 ( divide both sides by 3 )
x = 2
A. Y
B. X
C. W
D. Z
What is the coefficient in the term 7x-8
Answer:About "Identify the terms and coefficients" Identify the terms and coefficients : A single variable or a constant or a combination of these as a product or quotient forms a term.
Step-by-step explanation:
Answer:
I think you forgot to put the picture
Step-by-step explanation:
but try this:
A number used to multiply a variable. Example: 6z means 6 times z, and "z" is a variable, so 6 is a coefficient. Variables with no number have a coefficient of 1.
If a rectangle has an area of x^2+x-20 and a width of x-4, what is the length?
Answer:
This (x - 5) represents the length of the rectangle.
Step-by-step explanation:
The formula for the area of a rectangle of length L and width W is A = L * W.
Here, the width is x - 4 and the area is x^2 + x - 20. Dividing the width (x - 4) into the area results in an expression for the length:
x - 4 / x^2 + x - 20
Let's use synthetic division here. It's a little faster than long division.
If the divisor in long division is x - 4, we know immediately that the divisor in synthetic division is 4:
4 / 1 1 -20
4 20
--------------------
1 5 0
This synthetic division results in a remainder of 0. This tells us that 4 (or the corresponding (x - 4) is indeed a root of the polynomial x^2 + x - 20, and so *(x - 4) is a factor. From the coefficients 1 and 5 we can construct the other factor: (x - 5). This (x - 5) represents the length of the rectangle.
2
If = X – 1= 4, then x =
x – ,
3
Answer:
X=15/2
Step-by-step explanation:
hope it helps you
have a great day
Answer:
a
Step-by-step explanation:
15/2×2/3=30/6=5
5-1=4
hope this helps
Factorise x to the power of 4n + x to the power of 2n + 1 completely where n is an odd integer.
Answer:
[tex]x^{3}x^{4m}(x^{4m+1} + 1)[/tex]---------------------------------------------
x⁴ⁿ + x²ⁿ⁺¹ = x²ⁿ⁺¹(x²ⁿ⁻¹ + 1)n is an odd integer, let n = 2m + 1
Then
2n - 1 = 2(2m + 1) - 1 = 4m + 2 - 1 = 4m + 12n + 1 = 2(2m + 1) + 1 = 4m + 2 + 1 = 4m + 3x²ⁿ⁺¹(x²ⁿ⁻¹ + 1) = [tex]x^{4m + 3}(x^{4m+1} + 1)[/tex] =[tex]x^{3}x^{4m}(x^{4m+1} + 1)[/tex]change the voice of do you repair cars
HELP ME I'M STUCK!!!! PLEASE AND THANK YOU!!!!
Answer: 1/8
Step-by-step explanation: The sample space are all of the different outcomes an event can lead to. The H and T combinations at the bottom are all of the different outcomes. I think the probability of getting 3 tails for the coins (or TTT) is 1/8. This is because there are 24 total outcomes (HHH, HHT, HTH, HTT, THH, THT, TTH, TTT). There is 3/24 TTTs (also, 1/8 if you count the groups/simplify). Therefore, it is 1/8. Hope this helps!
Help asap! 20 pooints best answer for both questions
Answer:
Both of them would be D!
Step-by-step explanation:
Hope this helps, sorry if I am wrong.
Which is larger, 8 tons or 14,000 pounds?
Answer:
obviously 8 tons bro ...
Answer:
Since 1 ton equals 2000 pounds, 8 tons would equal 16000, so 8 tons is more than 14000 pounds
Step-by-step explanation:
Davindra made a paper box that is 8 in. Long, 5 in. Wide, and 1 in. High. It is shaped like a rectangular prism. What is the surface area of the box? *
Answer:
106 in²
Step-by-step explanation:
Given that :
Davindra made a paper box that is 8 in. Long, 5 in. Wide, and 1 in. High.
Using the relation :
SA=2lw+2lh+2hw
Surface area :
2(lw + lh + hw)
l = 8 ; w = 5 ; h = 1
Surface area :
2(8*5 + 8*1 + 1*5)
Surface area :
2(40 + 8 + 5)
= 2(53)
= 106 in²
a concession stand sells bags of popcorn for 3$ and cotton candy for 2$. a customer purchased bags of popcorn as well as cotton candy and spent 12$ . What is the equation that models this situation
Answer:
x3+y2=12
Step-by-step explanation:
I don't have a step by step explanation, hope this helps!!!
A bag contains a total of 25 marbles. The bag contains white, yellow, and
red marbles. You randomly select one marble from the bag. The probability
that you select a red marble is 16%. How many red marbles are in the bag?
16% * 25 = 4
There are 4 red marbles.
Answer:
4 red marbles
Step-by-step explanation:
25* 0.16 = 4
Which of the following equations have only one solution? Select all correct answers.
x²-x-6=0
5 x2 + 20 x+ 20 = 0
9x2 - 25 = 0
4x2+4 x=0
12+ 6 x+9= 0
Answer:
The equations which have only one solution is: 5x²+20x+20=0,
Step-by-step explanation:
Answer:
5x^2 + 20x + 20 = 0
12+ 6x +9= 0
Step-by-step explanation:
5x^2 + 20x + 20 = 0 /5 12 + 6x + 9 = 0
x^2 + 4x + 4 = 0 6x = -9-12
(x+2)^2=0 6x = -21
x + 2 = 0 x = -21/6
x=-2 x = -3.5
Please help! Find the value of x. Round to the nearest tenth
Answer:
Step-by-step explanation:
tan Ф = opposite side divided by the adjacent side
tan Ф = opp/adj in your problem Ф is x
tan x = 4/9
x = arctan (4/9) on your calculator arctan is might look like inverse tan
or you might have to use the 2nd (second) button and then tan
x = inverse tan (0.44444 repeating) try it on your own calculator
= 23.962488974578183 rounds up to 24.0
= 24.0
Assignment: Wed : Finding Unit Rates (7.RP.1, 7. RP.2, 7.RP.2a
Problem ID: PRABDPF7
In
1
10
of an hour, Jane can clean
5
8
of a window.
What is her unit rate in windows per hour?
The Utah Middle School Math Project
The
Answer:
5
Step-by-step explanation:
*ANSWER ASAP* how many times greater is 9 times 10^(5) than 8 times 10^(2)
Simplify the expression. Write your answer using only positive exponents.
p^-5
Answer:
1/p⁵
Step-by-step explanation:
peyton is going to invest  $310 and leave it in an account for 16 years assuming the interest is compounded quarterly what interest rate to the nearest hundredth of a percent would be required in order for peyton to end up with $530
Answer:
3.35
Step-by-step explanation:
Answer:
3.37
Step-by-step explanation:
3. The dollar amount d that Megan earns varies directly with the number of
hours h that she works. In her last paycheck, she earned $148.50 working
18 hours. If her next paycheck is $107.25, how many hours did she work?
Answer:
13 hours
Step-by-step explanation:
148.5/18=8.25
107.25/8.25=13
Discs of a radius 4cm are cut from a rectangular plastic sheet of length 84cm and width 24 cm
How many complete discs can be cut out?
The total area of the discs?
The total area of the sheet wasted?
Answer: 40
Step-by-step explanation:
Given
Radius of disc [tex]r=4\ cm[/tex]
The dimension of the sheet is [tex]84\times 24\ cm^2[/tex]
Area of a single disc
[tex]\Rightarrow a=\pi r^2=\frac{22}{7}\times 4^2\\\\\Rightarrow a=\frac{352}{7}\ cm^2[/tex]
Area of sheet
[tex]\Rightarrow A=84\times 24=2016\ cm^2[/tex]
No. of discs that can be cut off the sheet are
[tex]\Rightarrow n=\dfrac{A}{a}=\dfrac{2016}{\frac{352}{7}}=\dfrac{2016\times7}{352}\\\Rightarrow n\approx 40[/tex]
The total area of the disc is
[tex]\Rightarrow na=40\times\frac{352}{7}=2011.428\ cm^2[/tex]
Sheet wasted
[tex]\Rightarrow A-na=2016-2011.428=4.57\ cm^2[/tex]
For the smart person to answer.
Step-by-step explanation:
GCF: greatest common factor of any two (or more) numbers
Top left:
GCF of 4, 10, 14: 2
Top right:
GCF of 14, 35, 84: 7
Bottom left:
GCF of 9, 18, 42: 3
Right left:
GCF of 8, 32: 8
Can anyone help me?? I'll give anyone brainliest for correct answers...
Answer: A
Step-by-step explanation:
-120 is how many people leave a year so multiply that by the 3 years it’s been happening then it’s A, 360 left in the past 3 years
a right triangle has side lengths a, b, and c as shown below. Use these lengths to find tanx, sinx, and cosx.
Answer:
Tanx= b/c
Sinx=b/a
Coax=c/a
Step-by-step explanation:
6. A certain $400 investment is increasing 10%
every year.
a. What is the the sequence generator (multiplier)?
Answer:
0.10
Step-by-step explanation:
0.10 = 10/100 or 10%
Multiply 400*0.10 to get 10% of 400.
