Answer:
bro this makes no sense, I almost lost a brain cell
can someone help meee
Answer:34
Step-by-step explanation:
tell me in the comments If u want the explaination.
Question 1
2 pts
(09.05)
At an intersection, the red light times are normally distributed
with a mean time of 3 minutes and a standard deviation of 0.25
minutes. Approximately what percent of red lights last between
2.5 and 3.5 minutes? (2 points)
32%
68%
Answer: The percent of red lights last between 2.5 and 3.5 minutes = 95.44% approx.
Step-by-step explanation:
Given: Mean time = 3 minutes
standard deviation = 0.25 minutes
The probability of red lights last between 2.5 and 3.5 minutes :-
[tex]P(2.5<x<3.5)\\\\=P(\dfrac{2.5-3}{0.25}<\dfrac{x-\mu}{\sigma}<\dfrac{3.5-3}{0.25})\\\\=P(-2<z<2)\\\\=2P(Z<2)-1\\\\=2(0.9772)-1\\\\=0.9544[/tex]
The percent of red lights last between 2.5 and 3.5 minutes = 95.44% approx.
For every 1 circle there are
3 triangles, therefore the simplified
ratio of circles to triangles is:
Answer:
1:3
Step-by-step explanation:
What is the Volume of a hexagonal pyramid shown if the hexagon has a side length of 4 inches and the height of the pyramid is 12 inches?
Answer:
166.24 in³Step-by-step explanation:
Volume formula:
V = 1/3 Bh, B-base area, h- heightBase area:
B = 3√3a² / 2 = 3√3*4² / 2 = 41.57 in (rounded)Volume:
V = 1/3*41.56*12 = 166.24 in³What is the value of K?
k =
8
o
4
k
N
1
M
Answer:
m
Step-by-step explanation:
it should be
The tree was 8.5 inches when it was planted. The tree grew 1.5 inches each year.
Can anyone do it pleaseeeee
Answer:
hi
Step-by-step explanation:
probably it must be like this,
8.5+1.5=10 in
hope it helps
have a nice day
What is the roots of x+2=0
Answer:
Subtract 22 from both sides of the equation.
x=-2
Answer:
x = -2
Just move the 2 to the other side. Remember to switch the sign.
Calculate the Ek of a running back that has a mass of 80 kg and is running at a velocity of 8 m/s.
Answer:
2560 J
Step-by-step explanation:
mv^2/2
80(8)^2/2
2560 J
please help for brainliest
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation. Using this equation, find the maximum height reached by the rocket, to the nearest tenth of a foot.
y=-16x^2+212x+139
Answer:
841.6 ft
Step-by-step explanation:
Solve this using the quadratic formula.
y=-16x^2+212x+139 becomes -16x^2 + 212x + 139. The x-value of the axis of symmetry is
-212
x = ----------- = 6.625 (This time measurement is in seconds.)
2(-16)
The maximum height reached by the rocket is the y value when x = 6.625 and is y(6.625) = 841.6 ft
PLS HELP ! Will give brainliest!
Given:
The quadratic equation is :
[tex]16x^2-20x-6=0[/tex]
To find:
The quadratic formula for the given equation after substituting the values.
Solution:
If a quadratic equation is [tex]ax^2+bx+c=0[/tex], then the quadratic formula is:
[tex]x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}[/tex]
We have,
[tex]16x^2-20x-6=0[/tex]
In this equation, [tex]a=16,b=-20,c=-6[/tex].
Substituting [tex]a=16,b=-20,c=-6[/tex] in the above formula, we get
[tex]x=\dfrac{-(-20)\pm \sqrt{(-20)^2-4(16)(-6)}}{2(16)}[/tex]
Therefore, the required quadratic formula for the given equation after substituting the values is [tex]x=\dfrac{-(-20)\pm \sqrt{(-20)^2-4(16)(-6)}}{2(16)}[/tex].
PLEASE HELP ASAP!!!!!!!
find value of x. 58degrees 22 side length (right angle triangle)
Answer:
638
Step-by-step explanation:
Need help asap pleas and thank you .
Answer:
The answer that is not true when x = -4 is B.
Step-by-step explanation:
Since x = -4, that means all we have to do to eliminate answers is plug -4 in place of x.
A is incorrect because 2 × -4 = -8, which means that answer IS true and we're looking for the one that isn't true.
Same with C, -4 + -4 + -4 added together gives you -12 = -12, therefore isn't the right choice.
Finally D. -4/4 divided equals -1, so that would make it -1 = -1.
B is the only one that doesn't make sense, therefore you have your answer.
Britney's Cafe offers two kinds of espresso: single-shot and double-shot. Yesterday afternoon, the cafe sold 2 single-shot espressos and 18 double-shot espressos. What percentage of the espressos sold were single-shot?
Answer:
10% of espressos sold are single shot espressos.
Step-by-step explanation:
Single shot espressos, as percentage of total espressos sold =
[ Single espressos / Total ( ie Single + Double shot) ] x 100
[ 2 / (2 + 18) ] x 100
(2 / 20) x 100
= 10%
A batch of 24 cupcakes requires 9 ounces of flower. Julio made 132 cupcakes for the bake sale. How many pounds and ounces of flower did he use?
Answer:
49.5 ounces the flower
3 pounds, 1.5 ounces
Step-by-step explanation:
Given that :
24 cupcakes 9 ounces of flower
Number of ounces of flower required for 132 cupcakes will be x
Using cross multiplication method :
24 cupcakes = 9 ounces
132 cupcakes = x ounces
Cross multiply :
24 * x = 132 * 9
24x = 1188
divide both sides by 24 to isolate x
x = 49.5
Hence, 49.5 ounces the flower is required for 132 cupcakes
To express in pounds :
1 pound = 16 ounces
49.5 ounces = 3 pounds 1.5 ounces
below are two parallel lines with a third line intersecting them.
x= ??°
Answer:
x = 53
Step-by-step explanation:
x = 53 because they are alternate exterior angles
Evaluate the expression 3x^2+4x^3 when x=4.
Step-by-step explanation:
304
plug 4 in for x
3(4)^2 + 4(4)^3 = 304
48 + 256 = 304
HELP ME!!!!!!!!Write the sentence as an equation.
253 is equal to the total of 203 and b
Answer:
203 + b = 253
Hope this helps!
The initial balance in a savings account is $1,285. After which transactions will the final balance be the same as the initial balance?
pls help
Answer:
A deposit of 215$ and a withdraw of 215$
Step-by-step explanation:
The deposit amount is equalized and removed by the withdraw value.
Number 16 please help 10 points no links pleAse
Yes or no????????????
Answer:
Yes
Step-by-step explanation:
If a triangle follows the Pythagorean theorem, then it is right. The Pythagorean theorem states the following,
[tex]a^2 + b^2 = c^2[/tex]
Where (a) and (b) are the legs or sides adjacent to the right angle of the right triangle, and (c) is the hypotenuse, side opposite the right angle, the longest side.
Substitute in the given values and solve,
[tex](6)^2 + (8)^2 = (10)^2\\\\36 + 64 = 100\\\\100 = 100[/tex]
The given side lengths form a right triangle.
What is the coefficient of the second term in this expression?
4+5c
Answer:
The coefficient of the second tern in the expression , 4+ 5c, is 5
Step-by-step explanation:
Second term: 5c
C is a variable,therefore, making 5 the coeffiecient.
A car rental company charges a $50 flat fee and an additional $20 per day. A second company also
charges a flat fee plus an additional cost per day. This tables the cost to rent a car from the second
car company
What is the absolute value of the difference, in dollars, between the flat fees the two companies
charge?
Enter your response here:
Days
2
4
Cost
$130
$160
$175
Only 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, . ,and / are allowed in your answer.
Answers that are mixed numbers must be entered as an improper fraction or a decimal.
5
The difference between the flat fees of the two companies is $20
How many right angles are there in an angle that turns through 360º?
4 right angles
90 + 90 + 90 + 90 = 360
However, it that figure is a circle-- it may include 0 right angles since circles have no angles.
If the given ΔXYZ is rotated by 180 degrees around point X in a clockwise direction, what are the new coordinates of the Y and Z vertices? Select the two correct answers.
Answer:
Options C and D
Step-by-step explanation:
From the graph attached,
Coordinates of the vertices,
X → (0, 0)
Y → (-1, -2)
Z → (0, -2)
Rule for the rotation of a point (h, k) by 180° about the origin is given by,
(h, k) → (-h, -k)
By this rule,
Coordinates of the image points will be,
X(0, 0) → X'(0, 0)
Y(-1, -2) → Y'(1, 2)
Z(0, -2) → Z'(0, 2)
Therefore, Option (C) and Option (D) are the correct options.
Answer
C/D
Step-by-step explanation:
——PLEASE HELP QUESTION IS IN THE PIC—
Answer:
d. 4/5
Step-by-step explanation:
A classmate buys and resells scooters. If they original buy a scooter for $45.85 and mark it up 90%. What is the new selling price?
Answer:
$87.12
Step-by-step explanation:
To mark up the price you are basically doing 45.85×190%.
If you take a percentage and make it a normal number you need to divide by 100.
190÷100= 1.9
So you multiply 45.85×1.9=87.115
Because this is money you cant have $87 and 11 and a half cents. So you need to round
You need to round up because it is 5, which means that you get $87.12
Hope this helped.
Name one attribute that all squares and rhombus always share.
Answer:
equal sides!
Step-by-step explanation:
Answer:
Step-by-step explanation:
Both of them have sides that are equal. The second attribute is both of the shapes are parallel to each other
PLEASE HURRRRRRY! My life depends on it!!
Step-by-step explanation:
c²=a²+b²
b²=c²-a²
b²=10²-9²
b²=100-81
b²=19
b=✓19
b=4,35
If you flip a coin 7 times what is the probability that you will get exactly 2 tails
Answer:
The answer is 2/7.
Step-by-step explanation:
If you flip a coin 7 times then 7 is the denominator, which stands for the total amount of times you flipped the coin. The numerator is 2, which is the amount of times you land on the same thing, in this case, landing on tails.
Hope this helps!
-Luna