Answer:
45.6
Step-by-step explanation:
Answer:
45.6
Step-by-step explanation:
6 is greater than 5 so it rounds up
a) Rationalise the denominator of a,b,c
Answer:
See below
Step-by-step explanation:
a)
[tex] \frac{20}{ \sqrt{10} } = \frac{20 \sqrt{10} }{ \sqrt{10} \times \sqrt{10} } = \frac{20 \sqrt{10} }{10} = 2 \sqrt{10} [/tex]
b)
[tex] \frac{ \sqrt{2} }{2 \sqrt{5} - 1 } \\ \\ = \frac{ \sqrt{2} \times (2 \sqrt{5} + 1 )}{(2 \sqrt{5} - 1)(2 \sqrt{5} + 1) } \\ \\ = \frac{ \sqrt{2} \times 2 \sqrt{5} + \sqrt{2} \times 1 }{(2 \sqrt{5} ) ^{2} - (1)^{2}} \\ \\ = \frac{ 2 \sqrt{10} + \sqrt{2}}{20 - 1} \\ \\ = \frac{ 2 \sqrt{10} + \sqrt{2}}{19} \\ \\ equating \: it \: with \: \\ \frac{ a + \sqrt{b}}{c} \\ \\ a = 2 \sqrt{10} \\ \\ b = 2 \\ \\ c = 19[/tex]
Answer:
The above answer is correct
If a number is reduced by 40% and it becomes 192, what was the original price?
Answer:
320
Step-by-step explanation:
In what quadrant are the eyeglasses
Answer:
3rd Quadrant
Step-by-step explanation:
Hope the above solution will help you
Merle opened a new savings account she deposited 40,000 at 10% compounded semiannually at the start of the fourth year merle deposits an additional 20,000 that is also compounded semiannually at 10% at the end od six years the balance in merle account is
happy first question!!!!
What is the % difference between $88 and $122?
Answer:
Maths
Step-by-step explanation:
The diffrence between $88 and $122 is $88+$34=$128 and $128--$34=88
14) What is the vertex form y = 3x2 - 12x + 17?
A) y = 3(x - 2)2 +5
B) y = 3(x - 2)2 + 17
C) y = 3(x - 2)2 + 11
D) y = 3(x + 2)2 + 5
I
Answer:
the vertex is 14yx
Step-by-step explanation:
From the list of these numbers 3,5,7,12,15,18,20
What is a factor of 10
A number increased by 20% becomes 227. what is the number?
Answer: I think it's 272.4
Step-by-step explanation: hope it helps thx for the free points :)
What is Y= -3/10x-8 written in standard form?
Zoey's dog has a water bowl with a diameter of 6 inches. Sam's
dog has a water bowl with a diameter of 10 inches. What is the
approximate difference in the circumference (distance around)
ut of the two water bowls?
Answer:
12.56 inches
Step-by-step explanation:
Circumference: C = 2*pi*r
I will be using 3.14 in place of pi
Divide the diameters by 2, so 3 for Zoey and 5 for Sam
Multiply (2*3.14*3) and (2*3.14*5)
For Zoey you get 18.84 and for Sam you get 31.4
31.4-18.84= 12.56 in difference
Explain answer !!
( WILL GIVE BRAINLEST)
Larissa: y = 250 - 25x
Chucho: y = 30 +30x
4 weeks
Step-by-step explanation: It says it in the problem, and you can see they cross at 4 weeks
Answer:
Larissa: y = 250 - 25x
Chucho: y = 30 +30x
4 weeks
Step-by-step explanation:
Solve the inequality for x and identify the graph of its solution.
[1x + 1]< 2
Choose the answer that gives both the correct solution and the correct graph.
Answer:
x<1
Step-by-step explanation:
[1x + 1]< 2
Simplify both sides of the inequality.
x+1<2
Subtract 1 from both sides.
x+1−1<2−1
x<1
Answer:
x<1
On the graph line, the circle is open on number 1 and is going left
graph the line with the slope 3 passing through the point (2,-1)
Answer:
I can't draw at the moment but I'll try to teach how as best as I could.
Draw the Cartesian plane (x and y-axis)Locate the point (2, -1). To do this, go to x=2 then go down by 1 unit. Plot it or mark this point by a dot.Then from this dot, go 3 units to the right. After that, go up by 1 unit and mark that with a dot. By this time, you now have 2 dots.Connect them and that's it.2+2-3+70-32+454-10-40=
Answer:
443
Step-by-step explanation:
Answer:
449
Step-by-step explanation:
5 x (h + 3) for h = 7
Evaluate the expression
Answer:
ummm im so sorry but i forgot while answering
Step-by-step explanation:
opps
216. Determine the volume of a 75-inch cube.
a. 22.5 cu in
b. 166 cu in
c. 216 cu in
d. 421.88 cu in
Answer:
c
Step-by-step explanation:
because you have to know how many 8nches is a cube
How does the graph of g(x)=(x-1)^3+5 compare to the parent function f(x)=x^3
Answer:
it is one to the right and 5 up compared to its parent function.
Step-by-step explanation:
the (x-1)3 means that the graph is shifted one to the right and the + 5 means that you have to shift the garph 5 up also.
Please help me solve this!!
Bobby rode his skateboard 4 miles 30 rode her bicycle 10 miles in minutes. Who traveled at a greater average speed? Define an appropriate unit of speed and provide mathematical justification for your answer.
Answer:
Abelito had the greater average speed
Step-by-step explanation:
Given
Bobby:
[tex]Distance =4\ miles[/tex]
[tex]Time = 30\ minutes[/tex]
Abelito
[tex]Distance = 10\ miles[/tex]
[tex]Time = 48\ minutes[/tex]
Required:
Who had a greater average speed
Average speed (S) is calculated as:
[tex]S = \frac{Distance}{Time}[/tex]
We will make use of mph (miles per hour) as the unit of speed.
For Bobby:
[tex]S_B = \frac{4\ miles}{30\ minutes}[/tex]
Convert minute to hour
[tex]S_B = \frac{4\ miles}{0.5\ hr}[/tex]
[tex]S_B = 8mph[/tex]
For Abelito
[tex]S_A = \frac{10\ miles}{48\ minutes}[/tex]
Convert minute to hour
[tex]S_A = \frac{10\ miles}{0.8\ hr}[/tex]
[tex]S_A = 12.5mph[/tex]
By comparison: 12.5mph > 8mph
Hence: Abelito had the greater average speed
PLEASE HELP BEST ANSWER GETS BRAINLISEST!!!
Answer:
80?
Step-by-step explanation:
A highway inspector needs an estimate of the mean weight of trucks crossing a bridge on the interstate highway system. she selects a random sample of 49 trucks and finds a mean of 15.8 tons with a sample standard deviation of 3.85 tons. the 90 percent confidence interval for the population mean is:
Answer:
14.90 to 16.70 tons
Step-by-step explanation:
We are given;
Sample size; n = 49
Mean; x¯ = 15.8
Sample standard deviation; s = 3.85
At 90% Confidence interval, z = 1.645
Formula for confidence interval is;
CI = x¯ ± z(s/√n)
Thus;
CI = 15.8 ± 1.645(3.85/√49)
CI = 15.8 ± 0.90
CI = 14.90 to 16.70 tons
please send answers!!
Answer:
Please refer to the above attachment...
(sorry for bad handwriting:P)...
Step-by-step explanation:
I hope it helps...:)
i need your help hurry quick
Answer:
B. The value of n + m is positive.
Step-by-step explanation:
n is -0.5
m is 2.5
2.5 + (-0.5) = 2.5 - 0.5 = 2
2 is positive
Answer:this aint a answer but
Step-by-step explanation: your on the same quiz as me
An airplane is currently flying at an altitude of 37,000 feet. The airplane is scheduled to land at an airport 100 miles
away. Find the average angle at which the airplane must descend for landing. Round your answer to the nearest
degree.
Answer:
4degrees
Step-by-step explanation:
Given the following
Height of the airplane = 37000feet
distance covered on landing = 100miles = 100(5280)
distance covered on landing = 528,000feet
Using the SOH CAH TOA
sin theta = opposite/hyp
sin theta = 37000/528000
sin theta = 37/528
theta = arcsin (37/528)
theta = 4 degrees
Hence average angle at which the airplane must descend for landing is 4degrees
How do i solve this? and what’s the answer?
Answer:
x = 18
Step-by-step explanation:
The line joining 2 midpoints of the non parallel sides of a trapezoid is 1/2 the sum of the two parallel lines.
Put in much simpler language XY = 1/2 (BC + AD)
4x - 2 = 1/2 (6x + 1 + x) Combine the right
4x - 2 = 1/2 (7x + 1) Multiply by 2
8x - 4 = 7x + 1 Add 4 to both sides
8x = 7x + 5 Subtract 7x
x = 5
But what you want is the length of XY
XY = 4x - 2 = 4*5 - 2 = 18
Sorry I noticed too late that I used x for s. The answer would still be 18.
4. David hikes 2 1/4 miles in 1/2 hour. At this rate how long will it take him to walk 1 mile? If he walks for 1 hour,
how far will he have gone? yes
Answer: 4.50 miles.
Step-by-step explanation:
David hikes 2 1/4 miles in 1/2 hour. To make it easier, we can turn the fractions into decimals.
David hikes 2.25 miles in 0.5 miles.
The ratio of miles hiked to the hours hiked is 2.25 : 0.5. For every 0.5 hours, David hikes 2.25 miles.
To find how many miles David walks in 1 hour, we should multiply the original ratio by 2. 0.5 x 2 = 1, and we need to find how far David walks in 1 hour.
If David hikes 2.25 miles in half an hour, then he will walk 4.50 miles in 1 hour. So the answer is that David will walk 4.50 miles in 1 hour.
calculate the scale factor will mark branylis
Answer:
I think it is D. K= 11/2
$0.25 per bottle water
$0.40 per bottle water
$0.50 per bottle water
6-pack
12-pack
24-pack
Answer:
24-pack
Step-by-step explanation:
you are paying less per bottle than the other 2 packs.
I NEED HELP ASAP PLEASE SOLVE FOR X
A plate moves south at a rate of 2 cm/year. How many meters south from its original location will the plate be in 4,000 years?
A) 8,000 meters south
B) 4,000 meters south
C) 200 meters south
D) 80 meters south
Answer:
I hope I can help
welcome po
f(x) = 7x² + 21x - 70
factor
Answer:
Step-by-step explanation:
f(x)=7(x^2+3x-10)=7(x+2)(x-5)