Answer:
this right answer for this would be D
Answer:
D brainly won't let me explain..
A summer biathalon-style race requires running a certain distance, and then biking a distance 2 miles more than the length of the run. One athlete has a running speed of 6 miles per hour, and a biking speed of 10 miles per hour, and completes the event in 90 minutes. How long, in miles, is each segment of the race
Answer:
The run is 4.875 miles long, while, the bike is 6.875 miles long.
Step-by-step explanation:
Let d = running distance and d' = biking distance.
Given that d' = d + 2 and v = running speed = 6 mph and v' = biking speed = 10 mph.
Since time, t = distance/speed, running time, t = running distance/running speed = d/6 and biking time, t' = biking distance/biking time = d'/10 = (d + 2)/10.
Since the total time, t" = 90 minutes = 1.5 hours,
t + t' = t"
So, d/6 + (d + 2)/10 = 1.5
multiplying through by the L.C.M, 30, we have
30 × d/6 + 30 ×(d + 2)/10 = 30 × 1.5
5d + 3(d + 2) = 45
expanding the brackets, we have
5d + 3d + 6 = 45
collecting like terms, we have
8d = 45 - 6
8d = 39
d = 39/8
d = 4.875 miles
d' = d + 2 = 4.875 + 2 = 6.875 miles
So, the run is 4.875 miles long, while, the bike is 6.875 miles long.
Draw two intersecting line segment AB and CD intersecting at O. Measure the size of each pair of vertically opposite angles. Verify that each pair of vertically opposite angles are equal.
Answer:
Angles vertically opposite to each other are equal.
Step-by-step explanation:
There are two lines AB and CD intersecting at point O making angles 1 ,2,3 and 4.
The angles 1 and3 , angles 2 and 4 are vertically opposite angles.
Now consider the line AB
<1 + <2= 180 degrees--------- eq A
Now consider the line CD
<2+ <3= 180 degrees-----------eq B
As both equations are equal
< 1+ <2= <2+ <3 = 180 degrees
or
< 1+ <2= <2+ <3 or
< 1= <3 subtracting <2 from both sides
Now consider the line BA
<3+ <4= 180 degrees--------- eq C
Now consider the line DC
<4+ <1= 180 degrees-----------eq D
As both equations are equal
< 3+ <4= <4+ <1 = 180 degrees
or
< 3+ <4= <4+ <1
or
< 3= <1 subtracting <4 from both sides
This holds true for all vertically opposite angles that they are equal.
These can be measured with a protractor.
This can also be proved that if we add angles 1,2,3 and 4 we will get 360
and if we subtract angles 1 & 2 from 360 we will get 180 degrees which angles 3&4 make together.
<1+<2+<3+<4= 360 degrees
But <1 +<2= 180
360 - [ <1+<2] = 180 degrees
<3 +<4= 180
<1 +<2= <3 +<4= 180
What is the coefficient in the expression 15y + 5
Answer:
15
Step-by-step explanation:
If helpful, please give 5 star, thanks, and brainliest!
the length of the road is 600 miles if one inch represents 30 miles what is the length of the road
600 ............................................................................,...............................
what is the range of the function f(x)=7-3x when the domain is {-4, -2, 0, 2}?
Answer: 19
Step-by-step explanation:
Write an equation for the line with a y-intercept of
5 that is parallel to the line with equation
y=-3/4x+ 2.
Answer:
The answer to the question provided is possibly [tex]y = - \frac{3}{4} x + 2[/tex].
can u tell me the answers? please quick
Answer:
abcd not sure about e but e is irrational
Step-by-step explanation:
rational numbers are any finite number or decimal that doesn't terminate
a b c d are rational e is not
The model represents the equation 3x – 2 < 4. What is the solution for this inequality? x < 2 x < 6 x < -2 x < -3
Answer:
the answer is x<2
Step-by-step explanation:
lol
Answer:
x<2
Step-by-step explanation:
3x-2+2<4-+2
3/3x<6/3
x<2
ur welcome ;)
Plz answer 3.2x+0.2^2-5=0
Answer:
Hope it works for u
Step-by-step explanation:
As given, 3.2x+0.2^2-5=0 we have to find value of x
3.2x+0.04-5=0
3.2x-4.96=0
3.2x=4.96
x=4.96/3.2
x=1.55 Ans....
Answer:
x=31/20 (as a fraction)
Step-by-step explanation:
70 students at a school were asked to complete a survey about the location of their next field trip.
28 students chose the zoo and 33 students chose the amusement park.
The remaining students did not complete the survey.
here ya go
Answer: 28 + 33 = 61
so
28/61 x100
=45.9% (1dp)
Step-by-step explanation:
simplify 4•3^2-3+5•2
Answer:
21316
Step-by-step explanation:
sorry if im wrong i tried
Answer: 43
Step-by-step explanation:
Use PEMDAS: Parentheses, Exponents, Multiplication and Division, Addition and Subtraction.
4 × 3² - 3 + 5 × 2
Exponents
4 × 9 - 3 + 5 × 2
Multiplication
36 - 3 + 10
Addition
36 + 7
43
Hope this helped!
Eugene wants to buy jeans at a store that is giving $10 off everything. The tag on the
Jeans is marked 50% off. The original price is $49.98.
a. Find the total cost if the 50% discount is applied before the $10 discount.
b. Find the total cost if the $10 discount is applied before the 50% discount
Answer: a= $24.99
b= $39.98
I hope this helps
Step-by-step explanation:
HELPP MEE PLZZZ
Subtract. y-11/4y - 5y/6y^2?
Answer:B
Step-by-step explanation:
In which quadrant does the point (15,-7) lie?
Answer:
Quadrant 4
Step-by-step explanation:
Quadrant 1: Positive x and Positive y
Quadrant 2: Negative x and Positive y
Quadrant 3: Negative x and Negative y
Quadrant 4: Positive x and Negative y
For point (15, -7), we have a Positive x and a Negative y so it belongs in Quadrant 4.
The quadrant the given point (15,-7) lie is fourth quadrant.
The first quadrant in Cartesian coordinate is given as;
= (x, y)
The second quadrant in Cartesian coordinate is given as;
= (-x, y)
The third quadrant in Cartesian coordinate is given as;
= (-x, -y)
The fourth quadrant in Cartesian coordinate is given as;
=(x, -y)
(15,-7) corresponds to (x, -y)
Thus, the quadrant the given point lie is fourth quadrant.
Learn more here: https://brainly.com/question/16834380
i need help on this question
Answer:
v = 16.5
Step-by-step explanation:
plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz help
Answer:
the answer is B
Step-by-step explanation:
If the measure of one interior angle in a regular polygon is 160°, how many sides
does the polygon have?
Answer:
18 sides?
Step-by-step explanation:
((n-2)180)/n=160
160n=180n-360
20n=360
x=18
Write down in terms of n,
The equation for the line graphed
y-7.5x
y -7.5x
y=70x
y -70
HELP PLS
Answer:
y=7.5x
Step-by-step explanation:
What type of triangle, if any can be formed with angle measurements of 32 degrees,126 degrees, and 32 degrees?
Elizabeth plans on buying a new car for $25,000. The model she is looking at depreciates at a rate of 8.5% per year. Elizabeth plans on keeping the car for t years, or as long as it is worth more than $15,000.
Create the inequality that represents the amount of time Elizabeth will own the car, and then use it to answer the question below.
_______ ( ___ ) ^ t > _______
25,000____0.85______25,000
9,150 _____0.915_______9,150
8,500_____0.085_______8,500
15,000_____0.25_______15,000
Answer:
(25,000)(0.915)^t > 15,000
Step-by-step explanation:
Answer:
Here is a photo for it,
Step-by-step explanation:
Which graph represents the function below?
Please help it due ASAP
Show workings!
Answers:
AQ = 8
QD = 4
========================================================
Explanation:
A median goes from a vertex to the midpoint of the opposite side. The medians of this triangle are segments AD, BE, and CF.
The three medians intersect at the centroid. The centroid cuts the median AD such that
AQ is 2/3 as long as ADQD is 1/3 as long as ADNote how 2/3+1/3 = 3/3 = 1
Since AD = 12, we know that
AQ = (2/3)*AD = (2/3)*12 = 8QD = (1/3)*AD = (1/3)*12 = 4As a check,
AQ+QD = 8+4 = 12 = AD
So AQ+QD = AD is a true equation.
if shaun plays 1 game with mike and then 1 game with tim, what is the probability that shaun loses both games
Answers did you ever get this awnser??
Step-by-step explanation:
1) through: (0, 4) and (4, 3)
PLEASE HELP!!! 30 POINTS!!! NEED ANSWERS. WILL MARK BRAINIEST. FLAGGING NON RELEVANT ANSWER Follow the directions to convert the analog sound wave into a digital signal. The lines on the grid intersect at various points (x,y). For each whole number value of X, find the intersection point that is closest to the wave. Draw a small circle on that point, and record it’s Y value. The circles for the X values 0 through 3 are already done for you. Draw circles for the X values four through18. Write down all 19 Y values obtained by sampling the wave
Answer:
y-values of sampled wave:
0, 5, 5, -3, -5, -3, 2, 0, 0, -1, -2, 1, 1, -1, -1, -2, 2, 3, -1
Step-by-step explanation:
My teacher told me to put a dot on very cross or intersection that the line is on.
State if the number
is an integer, rational, irrational, or not a real number,
irrational
not a real number
rational
integer
Answer:
√43/8 can not be a rational number. Because the numerator of the fraction is not an integer.
Therefore, option C i.e. irrational is correct.
Step-by-step explanation:
What is a rational number?
We know that a rational is a number that can be expressed in the form of a fraction p/q of two integers p and q.
Where
p is a numerator q is a non-zero denominatorGiven the number
√43/8
here
The denominator 8 is an integer but the nominator √43 is not an integer.So,
√43/8 can not be a rational number. Because the numerator of the fraction is not an integer.
Therefore, option C i.e. irrational is correct.
6X² - 12x + (x-2) = 0
please help
Answer:
[tex]x = 2 \: or \: \frac{ - 1}{6} [/tex]
Step-by-step explanation:
Lets open the brackets.
[tex]6 {x}^{2} - 12x + x - 2 = 0[/tex]
Now lets factorise it.
[tex] = > 6 {x}^{2} - 12x + x - 2 = 0[/tex]
[tex] = > 6x(x - 2) + 1(x - 2) = 0[/tex]
[tex] = > (x - 2)(6x + 1) = 0[/tex]
Here x will have two values.
1) [tex]x - 2 = 0[/tex]
[tex] = > x = 2[/tex]
2) [tex]6x + 1 = 0[/tex]
[tex] = > 6x = - 1[/tex]
[tex] = > x = \frac{ - 1}{6} [/tex]
Jeremiah opened a savings account with a one-time deposit of $500. His savings account will pay a 5% simple interest per year. His brother, Brian, opened another savings account with a one-time deposit of $200. Brian’s savings account will pay 3% compounded annually. Who would earn more interest, to the nearest dollar, in 2 years?
A. Brian will make $12.00 more than Jeremiah.
B. Jeremiah will make $38 more than Brian.
C. Jeremiah will make $50 more than Brian.
D. Brian will make $212 more than Jeremiah.
Answer:
b
Step-by-step explanation:
Answer:
jhkunubnui
Step-by-step explanation:
Tell whether the ordered pair is a solution of the system of linear equations.
y = -5x + 2
y=x-4
(2-8)
