Answer:
1 minutes 9sec
Step-by-step explanation:
given data
Train
let the distance be x
distance covered by train= (15+x)miles
speed of train=65mile per minute
time t=?
we know that speed= distance/time
distance= speed*time
15+x=65t----------------------1
Roller coaster
distance=x miles
speed= 78miles per minutes
time t=?
we know that speed= distance/time
distance= speed*time
x=78t----------------------2
put x=78t in equation 1 we have
15+78t=65t
78t-65t+15=0
13t=-15
t=15/13
t=1.15====1miin 9sec
so it will take 1minutes 9sec
15=5k-13 whats the letter
Answer:
k= 5.6
Step-by-step explanation:
rewrite the equation by completing the square -2x=x^2 - 6
Sam spends $1200 on his education, which is of his salary. Hiis salary is
$4500.
Answer:
3200
Step-by-step explanation:
Answer:
3300
Step-by-step explanation:
Hi, I was wondering why (-1)(-1)(-1)(-2) equals 2 but (-2)(-4)(-3) equals -24. Thank you in advance.
Answer:
-1*-1= 2;2*-1=-1;-1*-2=2
Step-by-step explanation:
negative times neg equals positive
Because when you add negatives together it goes more down because you are adding negatives together. if you add 2 negatives it decreases in value but when you subtract 2 negatives from each other the number increases.
How to find the y axis on a graph
Zane has a bowl of raspberries and blackberries. There are 2 more raspberries than
blackberries, and there are 18 berries in all. How many blackberries does Zane have?
blackberries
Answer:
8 raspberries
Step-by-step explanation:
Bailey sold 59 flags at a parade. She has 37 flags left. How many flags did she have before the parade
Answer:
98 flags
Step-by-step explanation:
59+37=98
the baker's at healthy Breakers can make 210 Bagels in 5 hours how many bagels can they make in 19 hours
Answer:
he can make 798
Step-by-step explanation:
your welcome
Write the absolute value and the opposite values of the numbers listed in the table. 15,-93,56,-87
Answer:
initial value opposite value absolute value
15 -15 |15|
-93 93 |93|
56 -56 |56|
-87 87 |87|
Step-by-step explanation:
PLEASE HELP
i DoNT get the mathhhh
You'll have three copies of the red "-x" rectangles to represent -3x
Next, you'll need five copies of the blue squares with the label "1". This represents 5 since 1*5 = 5.
Lastly, you'll need one copy of the purple rectangle that has "y" on it.
All of this forms the expression -3x+5+y
All of these figures will be above the dashed line to be in the positive region.
marcos is making three tile pictures.
Answer:
600 tiles
Step-by-step explanation:
310 green tiles and red 310-50=290so 310 plus 290 =600
If -2a > 6, then _____.
a > -3
a > 3
a < 3
a < -3
Answer:
a<-3
bc -3(-2)=6
so if u go lower which the next number would be -4(-2)=8 which is greaterthan 6
Step-by-step explanation:
A cube has a side length of 20 in . find the value
can someone help me with this and explain the steps
Answer:
x intercepts is (-81 ,0)
y intercepts is (0,9),(0,-9)
Step-by-step explanation:
explain determination ......??
Determination is your will power of doing something. Someone who is determined has the firmness of purpose and the resolve to achieve a goal.
Synonyms:
resolution, resolve, resoluteness, character.
Antonyms:
weak-mindedness, pusillanimity.
Urgent! It's due today!
Line A is parallel to line b. If the measures of <2 is 78o, what is the measure of <5?
Answer:
∠7 = 102°
Step-by-step explanation:
∠2 ≅ ∠6 [Corresponding Angles]
So,
∠6 = 78°
Now,
∠6 + ∠7 = 180°
Where ∠6 = 78°
78° + ∠7 = 180°
∠7 = 180° - 78°
∠7 = 102°
Hope this helped!
~AnonymousHelper1807HELP ME PLS One table at a bake sale has 150 mini cupcakes. Another table has 180 mini cookies. Wich table allows more square arrangments when all mini cupcakes and mini cookies are displayed? Explain.
Answer: step by step equations
Step-by-step explanation:
You have a box that is 2 x 3 x 5 how many cubes does it hold? How do you know!
How to solve trigonometric functions such as
sin 2x sin x + cos x= 0
Use the double angle identity:
sin(2x) = 2 sin(x) cos(x)
Now rewrite
sin(2x) sin(x) + cos(x) = 0
as
2 sin²(x) cos(x) + cos(x) = 0
Factor out cos(x) :
cos(x) (2 sin²(x) + 1) = 0
Consider the two cases,
cos(x) = 0 OR 2 sin²(x) + 1 = 0
Solve for cos(x) and sin²(x) :
cos(x) = 0 OR sin²(x) = -1/2
Squaring a real number always gives a non-negative number, so the second case doesn't offer any real solutions. We're left with
cos(x) = 0
Cosine is zero for odd multiples of π/2, so we have
x = (2n + 1) π/2
where n is any integer.
The solution to 5(x-2)-6=24 is which of the following? Show the steps in your solution process.
Answer:
x=8
Step-by-step explanation:
distributive property
5x-10-6=24
adding -10 and -6 which is -16
5x-16=24
add 16 on both sides to cancel the -16
5x=40
than divide 5 to cancel out the 5
x=8
PLLLLLLLLSSSSSS HELLLLLLPPPPPP MEEEEEE Simplify: 29/4
Answer:
71/4 (I think) is the answer
im not sure srry if its not right
Step-by-step explanation:
I hope this helps!!!
Answer:
7 1/4
Step-by-step explanation:
what is the quotient of 2 1/5 ÷ -1/10
Answer:
-22
Step-by-step explanation:
Answer: 22
Step-by-step explanation:
ik bc i got it wrong on the test n is said the answer was 22
A political analyst believes that a senator's recent decision to support a bill resulted in a drop of approval ratings. To test this claim, he selects random cities in the state the senator represents and compares the approval ratings before the decision to the approval ratings after the decision. Suppose that data were collected for a random sample of 8 cities, where each difference is calculated by subtracting the percent approval rating before the decision from the percent approval rating after the decision. Assume that the ratings are normally distributed. Using a test statistic oft -3.935, the significance level Q=0.05, and the corresponding p-value less than 0.01, draw a conclusion for the appropriate hypothesis test, where the null hypothesis is H. : = 0 and the alternative hypothesis is H. : < 0.
a. Reject the null hypothesis.
b. Fail to reject the null hypothesis.
c. The conclusion of the hypothesis test is that there is sufficient evidence to suggest that there was a drop in approval ratings in cities after the decision to support the bill.
d. The conclusion of the hypothesis test is that there is insufficient evidence to suggest that there was a drop in approval ratings in cities after the decision to support the bill.
Complete Question
A political analyst believes that a senator's recent decision to support a bill resulted in a drop of approval ratings. To test this claim, he selects random cities in the state the senator represents and compares the approval ratings before the decision to the approval ratings after the decision. Suppose that data were collected for a random sample of 8 cities, where each difference is calculated by subtracting the percent approval rating before the decision from the percent approval rating after the decision. Assume that the ratings are normally distributed. Using a test statistic oft -3.935, the significance level Q=0.05, and the corresponding p-value less than 0.01, draw a conclusion for the appropriate hypothesis test, where the null hypothesis is [tex]H_o. : \mu_d= 0[/tex] and the alternative hypothesis is [tex]H. : \mu_d < 0[/tex]
a. Reject the null hypothesis.
b. Fail to reject the null hypothesis.
c. The conclusion of the hypothesis test is that there is sufficient evidence to suggest that there was a drop in approval ratings in cities after the decision to support the bill.
d. The conclusion of the hypothesis test is that there is insufficient evidence to suggest that there was a drop in approval ratings in cities after the decision to support the bill.
Answer:
The correct option is a and c
Step-by-step explanation:
From the question we are told that
The sample size is n = 8
The test statistics is t = -3.935
The level of significance is [tex]\alpha = 0.05[/tex]
The p-value is [tex]p-value = 0.01[/tex]
From the data given we see that the [tex]p-value < \alpha[/tex] hence
The decision rule is
Reject null hypothesis
The conclusion
There is sufficient evidence to suggest that there was a drop in approval ratings in cities after the decision to support the bill.
From start to finish, a machine can fill a bottle of water, seal it, label it, and pack it in 8.6 seconds. About how many bottles of water are packed in 480 seconds?
20 bottles
40 bottles
25 bottles
50 bottles
Answer:
50 bottles
Step-by-step explanation:
8.6×50=430 seconds so that the answer is 50 bottles
Answer:
i belive the answer is 50. correct me if im wrong.
Step-by-step explanation:
In the diagram below m DEF = 115°
Find the measure of GEF
3(4x-7)=27
how do i solve this ?
Answer:
x=4
Step-by-step explanation:
3(4x-7)=27
Divide each side by 3
3/3 (4x-7)=27/3
4x-7 = 9
Add 7 to each side
4x-7+7 = 9+7
4x = 16
Divide each side by 4
4x/4 = 16/4
x = 4
Rendell cycles 42 km at an average speed of 18 km/hr. Find the time taken, giving your
answer as a fraction of an hour in its simplest form.
Answer:
u
Step-by-step explanation:
is 4(x-8)=4x-8 One solution no solution or infinite solutions explain your answer
Answer:
No solution
Step-by-step explanation:
4(x-8) = 4x-8
Distribute.
4x-32 = 4x-8
Subtract 4x first and get rid of the variable (x).
4x-32 = 4x-8
-4x -4x
-32 = -8
-32 does not equal -8, so there is no solution!
Have an amazing day!! c:
From car models to colors
Answer:
green, beige, orange, gold, yellow, and purple were the rarest exterior paint colors.
plz mark brainliest if helpful
The sum of any number and its ______
equals 0.
Answer:
The sum of the real number (a) and its opposite real number (-a) is zero
Step-by-step explanation:
5 + (-5) = 0 and (-5) + 5 = 0
or, 5 - 5 = 0 and -5 + 5 = 0
Here 5 is real number and (-5) is it's opposite real number. Sum of 5 and (-5) is zero.