Answer:
23 hours
Step-by-step explanation:
If you multiply 5 by 26 you get 130. So by doing a little math you can find that 23 times 5 is 115, so then you add 15 and there you go. You've got your answer.
Hope this helped!!! :)
In this nuclear reaction equation, oxygen decays to form nitrogen. Which equation correctly describes
this decay?
O 150 N + e
o 150+ e TN
o 150 N+
o 150 → N+
Answer:
A. 150 N + e
Step-by-step explanation:
Im smart pls mark brainliest.
6 x - 16.7 equals what please help
Answer:
- 100.2
Step-by-step explanation:
6 x(-16.7)
6 x [tex]\frac{-167}{10}[/tex]
6 x(-167) = - 1002
-1002/10 = - 100.2
Nadia's bookshelf contains 10 fiction books, two reference books, and five nonfiction books.
What is the probability that she randomly picks up a reference book and then, without replacing it, picks up a nonfiction book?
1
289
10
289
5
136
1
10
Answer:
10/289
Step-by-step explanation:
hope this helps
The probability of reference book and then, without replacing it, picks up a nonfiction book is 5/136.
What is Probability?Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.
The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.
The degree to which something is likely to happen is basically what probability means.
Given:
Nadia's bookshelf contains 10 fiction books, two reference books, and five nonfiction books.
So, the probability of getting reference book
= 2/ 17
and, the probability of getting nonfiction book
= 5/ 17
Now, the probability of reference book and then, without replacing it, picks up a nonfiction book
= 2/ 17 x 5 / 16
= 10 / 272
= 5 /136
Learn more about Probability here:
https://brainly.com/question/30034780
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GEOMETRY HELP WILL MARK BRAINLIEST
Answer:
6² + x² = 10²
36 + x² = 100
36 - 36 + x² = 100 - 36
x² = 64
√x² = √64
x = 8
Step-by-step explanation:
Answer:
[tex]x = 8[/tex]
Step-by-step explanation:
According to PYTHAGORAS theorem
[tex] {6}^{2} + {x}^{2} = {10}^{2} \\ 36 + {x}^{2} = 100 \\ {x}^{2} = 100 - 36 \\ {x}^{2} = 64 \\ x = \sqrt{64} \\ x = 8[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day
Only 1/9 enrolled students in a school were absent. There were 4512 students present. How many students are enrolled in the school?
Answer:
5076.
Step-by-step explanation:
Let x be the number enrolled, then:
x - 1/9 x = 4512
8/9x = 4512
x = 4512 * 9/8
x = 5076.
Please can you help! I will mark brainiest!
Answer:
108
Step-by-step explanation:
So the area of the rectangle is easy.
12 * 5 = 60
Now you have to do the triangles.
The height is (13 - 5) / 2 = 4
The bases are 12
The area of one is (12 * 4) / 2
The area of both is 12 * 4 = 48
60 + 48 = 108
The two prisms below are similar. What is the value of x?
30
A. 3
B. 9
C. 1
D. 30
SUBMIT
Solve the equation 4x² +7x-2=0.
Answer:
x+11.5
Step-by-step explanation:
4x² +7x-2=0
16x+7x-2=0
23x-2=0
+2 +2
23x=2
23x/2
x= 11.5
I hope these help.
a card is drawn at random from a standard 52 card deck has a 1/13 chance of being at 8. What is the probability of the car not being an ace?
Answer:
12/13
Step-by-step explanation:
There are 52 cards in the deck
4 are aces
That leaves 52-4 or 48 that are not aces
P(not an aces) = cards that are not aces / total
= 48/52
=12/13
Answer:
[tex] \frac{12}{13} [/tex]
Answer D is correct
Step-by-step explanation:
[tex]there \: \: \: are = 52 \: \: cards \\ aces \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 4 \: \: cards \\ not \: aces \: \: \: \: \: = 52 - 4 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 48 \\ p \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{48}{52} \\ \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = \frac{12}{13} [/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
In a direct variation, y = 12 when x = 6. Write a direct variation equation that shows the relationship between x and y.
Answer:
y=2x
Step-by-step explanation:
Y=kx
12=k6
12 divided by 6 to get 2
and 2=k
A box contains 7 yellow, 5 blue, and 4 red balls. Three balls are drawn at random. Find the probability that:
a)
All three balls are the same color
c)
Two balls are yellow and one is blue
d)
All three balls are different colors
Answer:
a) 7/80 = 0.0875
b) 3/16 = 0.1875
c) 1/4 = 0.2500
Step-by-step explanation:
There are a total of 16 balls. 3 are selected. There are ₁₆C₃ possible combinations.
a) If all 3 balls are the same color, they are either all yellow OR all blue OR all red.
The number of ways of choosing 3 yellow balls from 7 is ₇C₃.
The number of ways of choosing 3 blue balls from 5 is ₅C₃.
The number of ways of choosing 3 red balls from 4 is ₄C₃.
The total probability is:
P = (₇C₃ + ₅C₃ + ₄C₃) / ₁₆C₃
P = (35 + 10 + 4) / 560
P = 49 / 560
P = 7 / 80
P = 0.0875
b) The number of ways of choosing 2 yellow balls from 7 is ₇C₂.
The number of ways of choosing 1 blue ball from 5 is ₅C₁.
The probability of both is:
P = ₇C₂ ₅C₁ / ₁₆C₃
P = 21 × 5 / 560
P = 105 / 560
P = 3 / 16
P = 0.1875
c) If all 3 balls are different colors, then there is exactly 1 yellow, 1 blue, and 1 red.
The number of ways of choosing 1 yellow ball from 7 is ₇C₁.
The number of ways of choosing 1 blue ball from 5 is ₅C₁.
The number of ways of choosing 1 red ball from 4 is ₄C₁.
The probability of all events is:
P = ₇C₁ ₅C₁ ₄C₁ / ₁₆C₃
P = 7 × 5 × 4 / 560
P = 140 / 560
P = 1 / 4
P = 0.2500
what is the answer please im in a hery
Answer:
Factor [tex]12a + 6b : 6(2a + b)[/tex]
Step-by-step explanation:
[tex]12a+6b[/tex]
Rewrite [tex]12[/tex] as [tex]2 * 6[/tex]:
[tex]=2\cdot \:6a+6b[/tex]
Factor out common term [tex]6[/tex]:
[tex]=6\left(2a+b\right)[/tex]
Hope I helped. If so, may I get brainliest and a thanks?
Thank you, Have a good day! =)
In ΔABC, the measure of ∠C=90°, the measure of ∠A=64°, and AB = 2.7 feet. Find the length of BC to the nearest tenth of a foot.
Answer:
Applying sine theorem for right triangle ABC, we have:
sin A = BC/AB
=> BC = AB x sin A = 2.7 x sin(64 deg) = ~2.4 (ft)
Hope this helps!
:)
2(q–8)< – 10 solve for q
Answer:
[tex] = q < 3[/tex]
Step-by-step explanation:
[tex]2(q - 8) < - 10 \\ 2q - 16 < - 10 \\ 2q < - 10 + 16 \\ 2q < 6 \\ \frac{2q}{2} < \frac{6}{2} \\ q < 3[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
what are the prime factors of 117?
You ride the metro train 16 times a month to work for $5.25 a day. A monthly pass is $70. Which
would cost less?
Answer:
Yes it would be Cheaper to get the pass becuse without it your spending 84 dollars and with it your spending 70
Step-by-step explanation:
Answer:
A monthly pass that is $70
Step-by-step explanation:
16*5.25= 84
$84 is greater than $70
what is the probability of spinning a number less than 3 or 6
Answer:
I'm glad you asked!
Step-by-step explanation:
The probability would be 0.3333 .When we convert it into a number we get 26 or 13.
Please help!
You pick a card at random. Without putting the first card back, you pick a second card at random.
What is the probability of picking a 3 and then picking a 3?
Simplify your answer and write it as a fraction or whole number.
A dolphin is swimming at a constant speed. It travels 30 meters every 5 seconds. What is the slope of the line that shows the relationship between x, time in seconds, and y, the distance in meters traveled by the dolphin
Answer:
6 meters per 1 second or 6m/s
Step-by-step explanation:
slope is rise/run or change in y/change in x
in this case y=30, x=5 so slope = 30/5= 6
product -6 and sum 1 what is the factors
Answer:
The answer is -2 & 3
Step-by-step explanation:
What is the value of x in the equation 8x – 2y = 48, when y = 4?
6
7
14
48
Answer:
x=7
Step-by-step explanation:
8x – 2y = 48
Let y = 4
8x - 2(4) = 48
8x - 8 = 48
Add 8 to each side
8x-8+8 = 48+8
8x = 56
Divide each side by 8
8x/8 = 56/8
x=7
Answer:
[tex]x = 7[/tex]
Step-by-step explanation:
[tex]8x - 2y = 48 \\ 8x = 48 + 2y \\ x = \frac{48 + 2y}{8} [/tex]
[tex]y = 4[/tex]
[tex]x = \frac{48 + 2y}{8} \\ x = \frac{48 + 2 \times 4}{8} \\ x = \frac{48 + 8}{8} \\ x = \frac{56}{8} \\ x = 7[/tex]
hope this helps
brainliest appreciated
good luck! have a nice day!
the button on ernestos shirt has a diameter of 8 millimeters.what is the buttons radius
Answer:
4 mm
Step-by-step explanation:
The radius is half the diameter, so in this case the radius of each button is 4 mm.
Answer:
The radius would be 4 millimetres
Step-by-step explanation:
The radius is the length from one side to the centre of the circle.
The diameter is the length from one side to another.
To work out the radius you would simply divide the diameter of 8 by 2, this gives you 4 millimetres. This is because the radius is half of the diameter.
1) Divide 8 by 2.
[tex]8/2=4 mm[/tex]
2x+5y=20 in slope intercept form
Answer: y=2/5x - 4
Step-by-step explanation:
EASY QUESTION, PLZ PLZ PLZ NEED HELP
Topic: Equivalent Fractions
Answer:
Step-by-step explanation:
For the first row:
Improper fraction: 5/6
Mixed number: 1 1/6
Number line: draw a line that is from 0-3. Fill it in a little bit after 1.
Circle models: draw 2 circles. Split each circle into 6 equal parts. Color in the first circle and then color in 1/6 of the second circle.
For the second row:
Improper fraction: 13/6
Mixed number: 2 1/6
Circle models: draw 3 circles. Split each circle into 6 equal parts. Color in 2 of the circles and then color in 1/6 of the last circle.
For the third row:
Improper fraction: 17/8
Mixed number: 2 1/8
Number line: draw a line that is from 0-3. Fill it in from 0 to a little bit after 2.
For the fourth row:
Improper fraction: 10/8
Mixed number: 1 2/8 or 1 1/4
Number line: draw a line that is from 0-2. Fill it in from 0 to a little bit after 1.
Circle models: draw 2 circles. Split each circle in 8 equal parts. Color in the first circle and then color in 1/8 of the other circle.
For the fifth row:
It's literally just the same as the third row lol.
For the sixth row:
Improper fraction: 5/3
Mixed number: 1 2/3
Circle models: draw 2 circles. Split each circle into 3 equal parts. Color in the first circle and then color in 2/3 of the other circle.
For the seventh row:
Improper fraction: 11/6
Mixed number: 1 5/6
Number line: draw a line that is from 0-2. Fill it in from 0 to right before 2.
Circle models: draw 2 circles. Split each circle into 6 equal parts. Color in the first circle and then 5/6 of the other circle.
For the eighth row:
Improper fraction: 4/3
Mixed number: 1 1/3
Number line: draw a line that is from 0-2. Fill it in from 0 to a little bit after 1.
Circle models: draw 2 circles. Split each circle into 3 equal parts. Color in the first circle and then 1/3 of the other circle.
For the ninth row:
Improper fraction: 9/5
Mixed number: 1 4/5
Circle models: draw 2 circles. Split each circle into 5 equal parts. Color in the first circle and then 4/5 of the other circle.
Hope this helps! Sorry it took me so long lol.
Which of the following is equivalent to
7-2(x + 2) <-4-3(1 - x)?
A. -2x<-17
B. 6 x <-9
C. -5x<-10
D. - X<-16
Answer:
C
Step-by-step explanation:
For this question you have to solve every inequality. To get the correct answer.
A diver dives from the board at a local swimming pool. Her height, y, in metres, above the water in terms of her horizontal distance, x, in metres, from the end of the board is given by y= -x^2 + 2x + 3. What is the diver's maximum height?
Answer:
4 meters
Step-by-step explanation:
Given a quadratic equation in which the coefficient of [tex]x^2[/tex] is negative, the parabola opens up and has a maximum point. This maximum point occurs at the line of symmetry.
Since the divers height, y is modeled by the equation
[tex]y= -x^2 + 2x + 3[/tex]
Step 1: Determine the equation of symmetry
In the equation above, a=-1, b=2, c=3
Equation of symmetry, [tex]x=-\dfrac{b}{2a}[/tex]
[tex]x=-\dfrac{2}{2*-1}\\x=1[/tex]
Step 2: Find the value of y at the point of symmetry
That is, we substitute x obtained above into the y and solve.
[tex]y(1)= -1^2 + 2(1) + 3=-1+2+3=4m[/tex]
The maximum height of the diver is therefore 4 meters.
HELP ASAP DUE NOW GIVING BRAINLIST!!!
3(-3 + 7x) ≤ -93
-3 + 7x ≤ -31
7x ≤ -28
x ≤ -4
Answer: x ≤ -4
-6(1 + 8x) ≥ 138
Multiplying or dividing both sides by a negative number flips the sense of the inequality.
1 + 8x ≤ 138/(-6) = -23
8x ≤ -24
x ≤ -24/8
Answer: x ≤ -3
7(6x - 4) ≥ 6x - 28
42x - 28 ≥ 6x - 28
36x ≥ 0
x ≥ 0
Answer: x ≥ 0
86 ≤ -4(1 - 5x) - 2x
86 ≤ -4 + 20x - 2x
90 ≤ 18x
5 ≤ x
Answer: x ≥ 5
2. Write a quadratic function with zeros at 6 and -2.
Answer:
f(x) = x^2 - 4x - 12
Step-by-step explanation:
If 6 is a zero, (x - 6) is a factor. Likewise, if -2 is a zero, (x + 2) is a factor.
Multiplying these two factors together, we get:
f(x) = x^2 - 4x - 12
Find the number if:
4.5% of it is 23% of 4
Answer:
20.4
Step-by-step explanation:
I need help Please help.
Answer:
Step-by-step explanation:
Number of students 10
Problem 1. $625 for the bus hire per friday, So 625*4=$2500
Problem 2. 2500/25=$100 each for the whole 4 weeks
Problem 3.
10 students tickets 220= 2200 for all tickets. The bus, 625/10 = $62.5*4= $250 dollars for the whole 4 weeks for the bus so in all each student pays $470 each
20 students, tickets 220=4400 for all tickets. The bus, 625/20=$31.25*4=$125 for the whole 4 weeks for the bus, so in all each student must pay $345 each
30 students, tickets 220 = 6600 for all tickets. The bus, 625/30 =$20.83*4=$83.32 for the whole 4 weeks for the bus, so in all each student must pay $303.32 each
41 students, tickets $160=$6560 for all tickets. The bus, because you need 2 buses at 625 each so $1250 for both buses 1250/41= 30.49*4=$121.96 for the whole 4 weeks for the bus. So in al each student must pay $281.96 each
Hope this is correct