The number of minutes that will take them to do one loop in a track of 20 m long is approximately 4 minutes
The speed of the toy engine around the Christmas tree is 300 meters/hour.
The number of minute for them to do one loop if the track are 20m long is as follows:
1 loop = 20m distance
Therefore,
Speedspeed = distance / time300 = 20 / t
t = 20 / 300
t = 1 / 15 hours
t = 3.9999999996
t ≈ 4 minutes
learn more on time here: https://brainly.com/question/17199920?referrer=searchResults
Answer in simplest radical form.(and show work please)
Answer:
Step-by-step explanation:
Use Pythagorean theorem,
hypotenuse² = base² + altitude²
x² = 7² + 10²
= 49 + 100
x² = 149
[tex]x =\sqrt{149}[/tex]
is -2/1 the same as 1/-2
Answer:
No
Step-by-step explanation:
-2 divided by 1 is -2 while -1 divided by - 2 is -0.5
Simplify the expression to a polynomial in standard form: (2x + 1)(x^2 - 6x + 7)
Answer:
2x^3-11x^2+8x+7
Step-by-step explanation:
hope this helps!!!
Simplify: –3(y 2)2 – 5 6y What is the simplified product in standard form? y2 y.
Answer:
Simplify: –3(y + 2)2 – 5 + 6y
What is the simplified product in standard form?
-3
y2 +
-6
y +
-17
Step-by-step explanation:
The simplification of the given expression will be -17.
What is simplification?
The process of reducing the complex mathematical expressions into the simplest form is called simplification.
Given expression will be simplified as:-
= -3 ( y + 2 ) 2 - 5 + 6y
= ( -3y - 6 ) 2 - 5 + 6y
= ( -6y - 12 -5 + 6y )
= ( -17 )
Hence the simplification of the given expression will be -17.
To know more about Simplification follow
https://brainly.com/question/723406
#SPJ2
Tell whether the set of ordered pairs {(1, 6), (2, 9), (3, 12), (4, 15)} satisfies a linear function. Explain.
A. No; there is no constant change in x that corresponds to a constant change in y.
B. Yes; there is no constant change in x that corresponds to a constant change in y.
C. No; there is a constant change in x that corresponds to a constant change in y.
D. Yes; there is a constant change in x that corresponds to a constant change in y.
Answer:
D
Step-by-step explanation:
If you put them into a graphing calculator they all align. Have a nice day.
what is the y-intercept for the function f(x) = 2 x 5^x + 4
Answer:
Step-by-step explanation:
We can find y-intercept by substituting 0 for x in the equation.
So, we will have:
y=2*5^0+4=2*1+4=2+4=6
y intercept is 6
One-third of 250 is what number?
Find the length of the missing side. Leave your answer in simplest radical form.
a. [tex]\sqrt{69}[/tex]
b. [tex]\sqrt{269}[/tex]
c. [tex]\sqrt{23}[/tex]
d. [tex]\sqrt{3}[/tex]
Answer:
a) [tex]\sqrt{69}[/tex]
Step-by-step explanation:
this is a right triangle so you can use the Pythagorean Theorem:
the sum of the legs, squared, is equal to the hypotenuse, squared
10² + b² = 13²
100 + b² = 169
b² = 69
b = [tex]\sqrt{69}[/tex]
0.79 ( ) 0.7 which is greater
Answer:
the first one
Step-by-step explanation:
because if it was money 0.79 cent is more then 0.70 cent
Answer:
0.7 is greater as it is closer to 1 than 0.5.
Step-by-step explanation:
Consider a number line: 0–0.1–0.2–0.3–0.4–0.5–0.6–0.7–0.8–0.9–1
x^2+14x+49-y^2
I need help factoring this. Could somebody run me through the steps on how to factor this? Thanks!
Since both terms are perfect squares, factor using the difference of squares formula,
[tex]a²b² = (a + b) (a - b) where \: a = x + 7 \: and \: b = y[/tex]
[tex](x+7+ y) (x+7-y)[/tex]
3.75 ÷ 1.50 is equivalent to 375 ÷ 150.
The dividend and divisor were both multiplied by ??
Answer:
100
Step-by-step explanation:
You need to move the decimal 2 numbers to right so you multiply by 100.
use the distributive property to expand 5(-2t+3)
Answer:
−10 + 15
Step-by-step explanation:
5(-2t+3)
−10+15
I am a two digit odd number I am a factor of 84 and also a multiple of 7 what number am I?
Answer:
21
Step-by-step explanation:
2 digit number| 2 and 1 that's 2 digits
factor of 84 21 x 4=84 21 42 63 84
multiple of 7 7 x 3=21
A 115-inch board is cut into two pieces. One piece is four times the length of the other. Find the length of the shorter piece.
4x + x = 150, x=30 (shorter piece)
5x=150
x=150/5 = 30
4x=120
x=30
total = 150
dont need method i just need to sleep rn quickly answer this then i sleep :)
4(5x-2)=2(9x+3)
Answer:
x=7
Step-by-step explanation:
4(5x-2)=2(9x+3) do everything in the parentheses
20x-8=18x+6
+8 +8
20x=18x+14
get X by itself by adding same terms
20x=18x+14
-18x -18x
2x=14 divide
/2 /2
X=7
FIND THE ANSWER............
Answer:
D
Step-by-step explanation:
The y- coordinate of M is the average of the y- coordinates of A and B
y - coordinate of M = [tex]\frac{3+7}{2}[/tex] = [tex]\frac{10}{2}[/tex] = 5
Help me to find x for the triangle attached below
Answer:
x=5
Step-by-step explanation:
since triangles are similar, the proportions of side will be same.
(x+1)/6 = (4)/(x+1)
x^2 -1 = 24
x^2 = 25
x=5
determine the value of y if x is -4
y=(x-2)^2
Answer: y = 36
Step-by-step explanation:
To find the value of y, you can plug in the x-value (-4) to the equation:
[tex]y=[(-4)-2]^2[/tex]
[tex]y=(-6)^2[/tex]
[tex]y=36[/tex]
Therefore, y is equal to 36.
I hope this helps!
I need some one to answer this the second they see it
Answer:
12
Step-by-step explanation:
Because this is a 45 angle triangle we can assume the other side is also a 45 angle. Which means that CD=AD.
[tex](6\sqrt 2)^2+(6\sqrt2)^2=144\\\sqrt 144=12[/tex]
Solve only question B pls
n' tell me how to calculate midpoint pls
Answer: 382
Step-by-step explanation:
cus yellow ate the soup
At a party, Ted's age is 15 years less than twice Sally's age. The sum of their ages is 54. How old is Ted?
Answer:12or39
Step-by-step explanation:
hope this helps!!
Q.1 Round off 20.0417 to the nearest 2 decimal point.
Answer:20.04
Step-by-step explanation: The answer is 20.04 because we have to round in 2 decimal point and 4<5 so 4 is not changed.
Solve for x
2(4x - 3)-8=4+2x
Thanks!
Answer: 3
Step-by-step explanation:
first substitute 2 into 4, so its 2*4 = 8x
Second, substitute 2 into -3 so itś 2*-3= -6
So, so far we're at 8x-6-8+4+2x, we combine the integers (which is -6 & -8, and we get -14)
So far, we are now at 8x-14=4+2x.
Now we add 14, to cancel out -14.
Then, we add 14 to 4, making 18.
Then, we subtract -2 to cancel out 2x.
Then, we subtract 2x to 8x, Making 6x
Now, final step :)
We divide 6x=18
which is 18 divided by 6
which is 3 :)
You got this, you're doing great!
select all that apply, 7th grade math
Hi!
Your answer to this question would be every option except for 0.
This is because the question is saying: x is less than or equal to negative 3.
Thus, you answer, all options except 0
Have a wonderful/night!
God bless!
Please please please help
answer
ITS C
Step-by-step explanation:
BECAUSE OF THE ROOT THAT THEY CAMPARE
PLEASE HELP WITH THIS WILL GIVE BRINALIST TO BEST ASNWER
What are the 2 different elastic forces? Explain how each will return their object back to their object back to their original shape.
There are two types of elastic forces- compression and tension.Something that is elastic can return to its original shape after being stretched or compressed. tension- The energy is stored until the force is removed and the object springs back to its original shape, doing work in the process
write an algebraic expression: The product of 6.3 and g increased by 14
Answer:
6.3g + 14
Step-by-step explanation:
The product of 6.3 and g:
6.3*g = 6.3g
The product of 6.3 and g increased by 14
⇒ 6.3g increased by 14
6.3g + 14
can someone please help 20 points..
Answer:
All triangles are Theorem. Every triangle is isosceles.
Only some plane figures triangles are plane.
Step-by-step explanation:
Hopes this helps
Answer:
Every triangle is isosceles.
Only some triangles are polygons
I need help with problem 21
Answer:
X = 65
Step-by-step explanation:
The sum of the exterior angles of a polygon is 360°
Therefore, X + 111 + 50 + 36 + 98 = 360
Combine like terms: X + 295 = 360
Subtract 295 from both sides: X = 65
Find the missing side lengths the triangle is 30-60-90
Answer:
y= 4
x=8
Step-by-step explanation:
30-60-90 rule. the side opposite of 30 degrees is y, the side opposite of 90 degrees is 2y, and the side opposite of 60 degrees is y [tex]\sqrt{3}[/tex]. since 4 is next to the square root that makes it y. y = 4 and 2y= 8.
