Answer:
-140
Step-by-step explanation:
The equation for the pH of a substance is pH = -log[H'], where H+ is the concentration of hydrogen ions. A basic
solution has a pH of 11.2. An acidic solution has a pH of 2.4. What is the approximate difference in the concentration
of hydrogen ions between the two solutions?
Answer:
it's b.
Step-by-step explanation:
Answer:
B. 4.0 x 10^-3
Step-by-step explanation:
Correct answer on edge 2022.
What is the definition of the average rate of change?
Answer: basically rate of change is the rate either slow or fast the thing could be anything changes
Step-by-step explanation:
so i was soooooooo confused on that same thing when i studied it
Step-by-step explanation:
there is the thing Google a said
Pls help it timed!!!!
Answer:
its subtraction property of equality
Step-by-step explanation:
it shows that the 3/4 next to the 16 was subtracted on both sides to cancel out on of the other 3/4 on the other side...
i uploaded a pic just incase u didnt understand
Hope this helps!!!
I need help with the problem that is in the attached image.
Answer: c
Step-by-step explanation: i did the test
Identify if the triangle is scalene, isosceles or equilateral.
Answer:
Scalene – none of the sides of the triangle have equal lengths
Isosceles – two sides of the triangle have the same length
Equilateral – all sides of the triangle have the same length
1. Equilateral
2. Scalene
3. Isosceles
4. Isosceles
5. Isosceles
6. Isosceles
7. Isosceles
8. Equilateral
Hope this helps! :)
Let $n$ be the smallest composite number such that it can be written as the product of two positive integers that differ by 10?
Answer:
The smallest composite number for [tex]n[/tex] is 24, which is the product 2 and 12.
Step-by-step explanation:
A composite number is an integer that is not a prime number, that is, a number that can be divided only by one and itself. Let be [tex]n[/tex] the smallest composite number such that there are two positive integers [tex]x[/tex], [tex]y[/tex] such that [tex]x - y = 10[/tex] and [tex]x\cdot y = n[/tex]. [tex]n[/tex] is a positive integer, since both integers are positive. Then, we can use the following formula:
[tex](y+10)\cdot y = n[/tex]
[tex]y^{2}+10\cdot y = n[/tex]
[tex]y^{2}+10\cdot y - n = 0[/tex] (1)
We obtain the roots of this second order polynomial by means of the Quadratic Formula:
[tex]y = \frac{-10\pm \sqrt{10^{2}-4\cdot (1)\cdot (-n)}}{2}[/tex]
[tex]y = -5\pm \sqrt{25+n}[/tex] (2)
Given that [tex]y > 0[/tex], we must observe the following inequation:
[tex]-5\pm \sqrt{25+n}>0[/tex] (3)
[tex]\sqrt{25+n} > 5[/tex]
[tex]25 + n > 25[/tex]
[tex]n > 0[/tex]
Let is find the values of x and y by iterative means:
x = 11, y = 1
[tex](11)\cdot (1) = 11[/tex]
11 is not a composite number, but a prime number.
x = 12, y = 2
[tex](12)\cdot (2) = 24[/tex]
24 is a composite number, which contains the following product of prime numbers:
[tex]2^{3}\cdot 3 = 24[/tex]
The smallest composite number for [tex]n[/tex] is 24, which is the product 2 and 12.
A color printer prints 29 pages in 12 minutes.
How many minutes does it take per page?
Answer:
b b
Step-by-step explanation:v gv g
Reese had $42 in his pocket orl Sunday night. He spent $6.50 every day for lunch.
Which of the following equations best describes the relationship between d, the
number of days since Sunday, and m, the amount of money remaining?
The required equation is m = 42 - 6.50d which is the correct answer would be an option (C).
What is the Linear equation?A linear equation is defined as an equation in which the highest power of the variable is always one.
We have been given that Reese had $42 in his pocket on Sunday night. He spent $6.50 every day for lunch.
Let d represents the number of days since Sunday, and m represents the amount of money remaining
Reese has 42 total and it subtracts by 6.50$ every day
According to the given question,
The linear equation would be as
m = 42 - 6.50d
The above model equation is the relationship between d, the number of days since Sunday, and m, the amount of money remaining
Therefore, the required equation is m = 42 - 6.50d.
Learn more about the Linear equations here:
https://brainly.com/question/13738061
#SPJ2
The Gomez family has completed 50% of a trip, They have
traveled 40 miles. How far is the trip?
Answer: 80 miles
Work: I just did 40 times 2 because they completed half their trip, and they need to complete 40 more miles.
Happy Holidays! :)
Answer: 50 miles
Step-by-step explanation:
The train station clock runs too fast and gains 8 minutes every 10 days.
How many minutes and seconds will it have gained at the end of 4 days?
Answer: 3 minutes and 12 seconds
Step-by-step explanation: You can see 8 minutes every 10 days as a fraction (8/10). This can be simplified to 4/5, meaning that the amount of time gained will be 4/5 of the # of days that have passed. 4/5 of 4 days is 3.2 minutes, and that can be converted to 3 1/5. 60 seconds divided by 5 is 12 seconds, meaning that 1/5 of a minute is 12 seconds. Therefore, the answer is 3 minutes and 12 seconds.
6. Suppose that a bike rents for $4 plus $1.50 per hour. Write an equation in slope-intercept form that models this situation. y=4+1.50
7. Use the equation you wrote in problem 6 to complete the table. 2 4 6 8 Hours (x) Total Cost (y) - - - -
16 Four biased coins, A, B, C and D are thrown.
The probability that each coin will land on Heads is shown in the table.
Coin
Probability
A
0.33
B
0.033
1
С
3
D
30%
i) which coin is least likely to land on Heads?
ii) Which coin is most likely to land on Heads?
Julie says ,
"The probability that coin C will land on Heads is the same as the probability that coin C will land on Tails."
b) Is she correct?
Give a reason for your answer.
Coin B is going to be thrown 4000 times
c) work out an estimate for the number of times coin B will land on Heads.
and also please give me step by step thanks x
Answer:
Step-by-step explanation:
There are no results for ADD YOUR ANSWERQuestion16 Four biased coins, A, B, C and D are thrown.The probability that each coin will land on Heads is shown in the table.CoinProbabilityA0.33B0.0331С3D30%i) which coin is least likely to land on Heads?ii) Which coin is most likely to land on Heads?Julie says ,"The probability that coin C will land on Heads is the same as the probability that coin C will land on Tails."b) Is she correct?Give a reason for your answer.Coin B is going to be thrown 4000 timesc) work out an estimate for the number of times coin B will land on Heads.and also please give me step by step thanks x
Check your spelling or try different keywords
Pleaseeee answer correctly !!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!
how do I solve for N 1/2(n+4)=6?
Answer:
8
Step-by-step explanation:
Get rid of the denominator first. -Multiply both side by 2-
1/2 × 2 = 1 (n + 4) ----- n + 4
6 × 2 = 12
n + 4 = 12
Now solve for N
N = 12 - 4
N = 8
Sarah is making shortbread biscuits. She has: 600g of butter 300g of caster sugar 1kg of plain Klour 500g of cornKlour She has found this list of ingredients for making 8 shortbread biscuits Sarah wants to make as many shortbread biscuits as possible. Work out how many shortbread biscuits Sarah can make.
Answer and explanation:
We are told that Sarah has 600g of butter, 300g of caster sugar, 1kg of plain flour, and 500g of cornflour
We are also told that she found this list of ingredients for making 8 shortbread biscuits. The question isn't clear on whether the ingredients listed above are for the 8 shortbreads, or ingredients for 8 shortbreads were omitted.
We are told Sarah wishes to make as many shortbreads as possible.
To work out how many shortbreads Sarah can make, we need to know the ingredients required for one shortbread(or a number of shortbreads) and ingredients Sarah currently has. The question lists Sarah's ingredients and the number of shortbreads(8) that can be made with them, but doesn't go further than this. Therefore we can conclude that Sarah can only make 8 shortbreads given the amount of ingredients in her possession.
Write two like terms using whatever variable(s) you'd like. Explain why these are like terms.
For a given input value aaa, the function hhh outputs a value bbb to satisfy the following equation. 3a-5=-4b+13a−5=−4b+13, a, minus, 5, equals, minus, 4, b, plus, 1 Write a formula for h(a)h(a)h, left parenthesis, a, right parenthesis in terms of aaa. h(a)=
Answer:
3/2-3/4a
Step-by-step explanation:
just solve for b basically, also the 3/2 and 3/4 is a fraction so they're over eachother but it wont let me do that on here so yeah. also sorry this is very late so i dont know if im any help.
The required function h(a) is a = -4b +18
A simplified function h for a-5=-4b+13 to be determine.
What are functions?A function is defined as for every input their is a certain output.Function is a type of relation, or rule, that maps one input to specific single output.
Here, we have a-5=-4b+13
a−5=−4b+13
a = -4b + 13+ 5
a = -4b +18
Thus, the required function h(a) is a = -4b +18
learn more about function here:
brainly.com/question/21145944
#SPJ2
If the sum of the legs of a right triangle is 49cm and the hypotenuse is 41cm find the length of the two legs... without using guess or check.
Please show work
Answer:
I think 42
Step-by-step explanation:
4(x + 2) = 2 (x – 6)
What value of x makes the equation true?
A. 1
B. -7
C.-10
D.8
What time is it in New York, now
Answer:
7:17 PM
Step-by-step explanation:
Answer:
7:17................
Kira runs 7 miles in 60 minutes. At the same rate, how many miles would she run in 24 minutes.
Answer:
2.8 miles
Step-by-step explanation:
brian runs 7 miles in 60 minutes at the same rate how many miles would he run in 24 minutes?
(24/60)*7=2.8 miles
Find the slope of the line that would pass through the ordered pairs below.
(-7, 9) and (14, -18)
What is the value of x in the solution to the system of equations? 4x - 2y = 5 y = 3x - 1
Answer:
X = 7
Step-by-step explanation:
Please mark brainliest.
Answer:
[tex]\huge\boxed{\sf x = -2}[/tex]
Step-by-step explanation:
4x - 2y = 5 -------------------------------(1)
y = 3x - 1 ----------------------------------(2)
Put Eq. (2) in (1)
4x - 2(3x-1) = 5
4x - 6x + 1 = 5
-2x + 1 = 5
Subtracting 1 to both sides
-2x = 5 - 1
-2x = 4
Dividing both sides by -2
x = 4 / -2
x = -2
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AnonymousHelper1807Find the two square roots of 4.
Answer:
2 and -2
Step-by-step explanation:
Answer:
the number 2
What is the answer here?
9514 1404 393
Answer:
D
Step-by-step explanation:
The coefficient of 5/4 in the given equation tells you that you are looking for a table or graph that has a y-increase of 5 for each x-increase of 4.
Graph D is the one.
__
Let's look at the choices:
A: y increases for an x-increase of 4
B. y increases 16 (from -7 to 9) for an x-increase of 4 (from -2 to 2)
C. y increases -5 (from -9 to -14) for an x-increase of 4 (from 4 to 8)
D. y increases 5 (from -2 to 3) for an x-increase of 4 (from -4 to 0)
A red car is traveling at 10 m/s, south next to a blue car that is traveling in the
same direction at 8 m/s. How fast is the red car traveling relative to the blue car?
Answer:2.0 m/s,south
Step-by-step explanation:
Help me find the area please!
Answer:
787.5
Step-by-step explanation:
Givens
The bottom part of the figure is a trapezoid. Solve it first
a = 15 cm
b = 34 cm
h = 19 cm
Formula
Area = 1/2 (a + b)*h
Solution Trapezoid
area = 1/2 (15 + 34)*19
Area = 1/2 * 49 * 19
Area = 465.5
Remark
The top half of the figure is a parallelogram.
Formula
Area = base * height
Givens
base = 23
height = 14
Solution
Area = 23 * 14
Area = 322
Total Area
Total Area = 322 + 465.5
Total Area = 787.5
What’s the sum of a number x and three is equal to eleven
Answer:
x = 8
Step-by-step explanation:
your equation can be written as: x + 3 = 11
subtract 3 from both sides to isolate x: x = 8
your answer is 8
PLEASE ANSWER RIGHT AWQY I WILL MARK YOU BRAINLIEST!!
please help me answer this i will give brainliest and 5 star rating!!
Answer:
x = 77 ft
Step-by-step explanation:
55 ÷ 45 = 1.222222222
1.222222222 x 63 = 77
Answer:
63+45 divided by 12 + 55 times 12 + 95 (is what i think is the approximate length of the shadow)
Step-by-step explanation:
then after you do all this round it to the nearest foot