Answer:
7.5
Step-by-step explanation:
URGENT PLZ HELP
The pH of a liquid is a measure of how acidic or basic it is. The concentration of hydrogen ions in a liquid is labeled (H+). Use the formula pH = -log[H] to find the pH level, to the nearest tenth, of a liquid with [H] about 8.1 x 10-7,
a = 6.1
b = 7.9
с = -7.9
d = 7.0
Answer:
pH = 6.1
Step-by-step explanation:
pH = -log[H]
pH = -log[8.1 x 10^-7]
pH ≈ 6.09
Therefore, option a, 6.1, is closest to this value and is the correct answer.
Math homework help wanted
Answer:
C. [tex] 2\pi[/tex]
Step-by-step explanation:
Central angle [tex]( \theta) = \frac{\pi}{2} = 90\degree [/tex]
Radius (r) = 4
[tex]l(\widehat{EF}) = \frac{ \theta}{360 \degree} \times 2\pi \: r \\ \\ = \frac{90 \degree}{360 \degree} \times 2\pi(4) \\ \\ = \frac{1}{4} \times 2\pi(4) \\ \\ l(\widehat{EF}) = 2\pi[/tex]
someone please help me answer this!!!
Answer:
9 units is the answer.
Step-by-step explanation:
points are (-10,-4) and (-10,5)
Pythagorean theorem can be written as,
[tex]d=\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \\\\d=\sqrt{(-10-(-10))^2 + (5-(-4))^2}\\\\d=\sqrt{(0)^2+(9)^2} \\\\d=\sqrt{81} \\\\d=9[/tex]
∴ d = 9 units
A carpenter worked for 4 days to finish a repair job.
She charged $825 for 15 hours of work.
What is the carpenter’s rate per hour?
A
$55
C
$85
B
$58
D
$182
Can you help me. .................
Answer:
i think its c
Step-by-step explanation:
Exercise 8.12 introduces data on the average monthly temperature during the month babies rst try to crawl (about 6 months after birth) and the average rst crawling age for babies born in a given month. A scatterplot of these two variables reveals a potential outlying month when the average temperature is about 53F and average crawling age is about 28.5 weeks. Does this point have high leverage
Answer:
The point has a high leverage
Step-by-step explanation:
The point has a high leverage as it would act as an infinitesimal point that will have a very huge/drastic impact on the fit of the model, and this impact can be seen in such ways as listed below :
Smaller coefficient of determinationHigher sum of squares errorremoving this point will eliminate these drastic impact and make the correlation to be better.
From the information given about the outliner, the given point is not influential and therefore does not have high leverage.
What is an outliner?An outlier refers to a data point whose response does not follow the general trend of the rest of the data.
A data point has high leverage if it has an extreme predictor x value. Here, x = 53 and, y = 28.5.
X is not an extreme point, the data point is not high leverage but an outlier. The data point doesn't follow the general trend of the rest of the data.
Hence the given point is not influential.
Learn more about outliner on:
https://brainly.com/question/3631910
Find the value of x
A. 8
B. 12
C. 4
4. 16
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Answer:
C) 4
Step-by-step explanation:
We observe that the top segments are in the same 3:4 ratio as the bottom segments. This means they are the same lengths: 3x = 12, 4x = 16. Either of these equations tells us x = 4.
_____
Additional comment
In case you aren't convinced, you can solve this using the secant rule for segments and circles: the product of the lengths to the circle intercepts are the same for both secants.
12(12 +16) = 3x(3x +4x)
336 = 21x² . . . . . simplify
16 = x² . . . . . . . . divide by 21
4 = x . . . . . . . . . .positive square root
Find the measure of angle x 125
Answer:
x = 125 degrees
Step-by-step explanation:
The vertical angles theorem states that two angles opposite to each other that are formed from 2 intersecting lines are congruent.
Therefore, angle x and the angle that is 125 degrees are congruent to each other.
So, x=125 degrees.
Hope this helps! :)
someone please help me answer this!!
Answer:
6 units
Step-by-step explanation:
they are six units apart just count the amount of units they are from each other or since they are in the same quadrant and y-axis just subtract the 10 from the 4
Answer:
6 units is the answer.
Step-by-step explanation:
points are (10,-5) and (4,-5)
Pythagorean theorem can be written as,
[tex]d=\sqrt{(x_2-x_1)^2 + (y_2-y_1)^2} \\\\d=\sqrt{(4-10)^2 + (-5-(-5))^2}\\\\d=\sqrt{(-6\\)^2+(0)^2} \\\\d=\sqrt{36} \\\\d=6} \\\\[/tex]
∴ d = 6 units
Write a unit rate for the situation $24 for 3 pounds
The sum of two numbers is 17 and the quotient is 70
Answer:
The Sum of 2 Numbers is 17 & Their Product is 70. Find the Numbers -
Step-by-step explanation:
The Factors of 70 are - 1, 2, 5, 7, 10, 14, 35 & 70
Now, Find the two Factors, when added gives the Sum as 10 & the Product of Multiplication as 17 -
From the given Statement, we can see that when the Factors 7 & 10, when Added gives the Sum as 17 and Their Product as 70 *(7 + 10 = 17 ; 7 × 10 = 70)
Therefore, the two Numbers are 7 & 10
Gerry plans to place 23-foot ladder against the side of his house to clean his gutters. The bottom of the ladder will be 8 feet from the house. How far up the side of the house will the ladder reach? Round to the nearest tenth.
=?ft
Please provide only answer to question.
The side lengths of a triangle are 6, 8, and a 10. Is this a right triangle?
Answer:
Yes
Step-by-step explanation:
a^2+b^2=c^2 is for right triangle so
6^2+8^2=10^2
36+64=100
100=100
so it's a right triangle
Jack had $12,100 in medical expenses. His insurance covered 80% of the expenses. The IRS allows deductions of medical and dental expenses of any amount exceeding 7.5% of the adjusted taxpayer’s gross income. If Jack’s adjusted gross income last year was $30,050.00, how much is Jack allowed to deduct?
Answer:
he deduct the amount of the total UN-reimbursed allowable in (Blank) Year
Step-by-step explanation:
I think this is right but i.dk he (AGI) so its undetermined
Find an equation for the nth term of the sequence.
-1, -4, -16, -64, ...
Answer:
An =4^(n-1)
Step-by-step explanation:
hello :
the sequence is geometric because : (-64)/(-16) = (-16)/(-4)=-4/-1= 4=r
the nth term is : An =A1 × r^(n-1)
a common ratio is : r and A1 the first term
in this exercice : r =4 A1 = 1
An =A1 × r^(n-1)
An =1 × 4^(n-1)=4^(n-1)
Write the sum using summation notation, assuming the suggested pattern continues. 4 - 12 + 36 - 108 + ...
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Answer:
[tex]\displaystyle S_n=\sum_{k=1}^n{4(-3)^{k-1}}[/tex]
Step-by-step explanation:
The first term of this geometric series is 4. The common ratio is -12/4 = -3, so the general term is ...
an = 4·(-3)^(n-1)
The sum is the sum of terms of this form.
[tex]\displaystyle S_n=\sum_{k=1}^n{4(-3)^{k-1}}[/tex]
Oliver had m dollars to spend on a backpack for the new school year. The expression below represents the amount of money he had remaining after purchasing the backpack.
m - (y + 0.07y)
If his total purchase included the backpack and tax, which statement best describes y?
A.
The amount of money he had to spend on the backpack.
B.
The amount of tax for the backpack.
C.
The price of the backpack, including tax.
D.
The price of the backpack, not including tax.
Answer:
Option A
Step-by-step explanation:
Y is the amount of back pack
The total amount is represented by m
If Y is the cost of back pack purchased by Oliver, then 0.7 Y is the tax applicable on the purchase of back pack
Hence, the remaining cost would be total amount with Oliver minus the cost of back pack and the tax applicable on the purchase of back pack
Remaining cost = m - (y + 0.07y)
Hence, option A is correct
Jewel buys a toy horse for $36. The store increases their purchases price by 10%. What is the sales price of the toy horse?
Answer:
Step-by-step explanation:
4n^2 + 5n +3=0
Solve equation
Answer:
look at the attached image
Step-by-step explanation:
How many lines of symmetry does the
figure below appear to have?
Answer:
here is only one line of symmetry
Answer:
There are 3 lines of symmetry.
Step-by-step explanation:
There is one in the middle going vertically and horizontally, and there is one going diagonal.
Hope this helped!!
PLEASE HELP TIMED two functions are combined resulting in the function j(x)= 1.5x^2 + 4x-3 . Which operations apply to the specified functions could result in j(x)? select three options.
Step-by-step explanation:
B two quadratic by addition
C a linear and quadratic by addition
D two linear by multiplication
23. If 25% of a number is 75. find the number.
A. 700 B. 600 C. 500 D, 400 E. 300
Answer:
23.E
Step-by-step explanation:
please click the heart and rate excellent and brainleist to ☻❤☺️☺️❤☻
Answer:
[tex]300 \\ \\ answer \: \: E\: \: is \: \: correct[/tex]
Step-by-step explanation:
Let the unknown number be x
[tex]x \times \frac{25}{100} = 75 \\ x = \frac{75 \times 100}{25} \\ x = 300[/tex]
Hope this helps you
Can I have the brainliest please?A number line that represents k > 5
Answer:
any number from 6 and above
someone please help me on this
Answer:
12 ft
Step-by-step explanation:
From the question given above, the following data were obtained:
Angle θ = 41.5°
Opposite = 8 ft
Length of handrail =?
We can obtain the length of the handrail by calculating the Hypothenus. This can be obtained as follow:
Angle θ = 41.5°
Opposite = 8 ft
Hypothenus =?
Sine θ = Opposite /Hypothenus
Sine 41.5 = 8 / Hypothenus
0.6626 = 8 / Hypothenus
Cross multiply
0.6626 × Hypothenus = 8
Divide both side by 0.6626
Hypothenus = 8 / 0.6626
Hypothenus = 12 ft
Thus, the Lenght of the handrail is 12 ft
4. 29 degrees, x , 12
Solve for x. Round to the nearest tenth
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Answer:
24.8
Step-by-step explanation:
The mnemonic SOH CAH TOA reminds you of the relation ...
Sin = Opposite/Hypotenuse
sin(29°) = 12/x . . . . . . . . . . . use given values
x = 12/sin(29°) ≈ 24.752 . . .multiply by x/sin(29°)
x ≈ 24.8
ANSWER AND STEPS PLEASE
A container that holds wheat is shaped like a cone. The diameter of the base of the container is 21 and 3/4 feet, and the height of the container is 10.3 feet.
Which measurement is closest to the volume of the container in cubic feet?
Answer choices:
A. 15,307.55 ft3
B. 1,275.63 ft3
C. 5,102.52 ft3
D. 3,826.89 ft3
Answer:
answer is b.
Step-by-step explanation: use formula
V=1/3(hπr²)
so using this formula gives us 1275.62897 but rounded off gives us 1,275.63 ft3
ok the diameter is 21 3/4ft i converted it to a decimal, 21.75ft so to get the radius i 21.75ft/2= 10.875ft
ok to continue
V=1/3(hπr²)
V=1/3(3.14*10.875ft)h
V=1/3(118.265625ft)
V=1/3(118.265625 ft)10.3ft
V=1275.62897 which rounded=1,275.63 ft3
Which point would be reflected across the y-axis to (-3,-9)
A. (-3,9)
B. (3,-9)
C. (-9,3)
D. (9,-3)
Answer:
b
Step-by-step explanation:
when an reflected across the y axis only the x value changes and it changes negatively
I need some help! i will try to give brainliest!!!
Answer:
its A because the Y intercept is at 3
Kody wants to test to be sure his soap dispenser design works fairly for people with different skin colors. He
selects separate random samples of 25 workers with light skin and 25 with dark skin. For each worker, he
measures the maximum distance from the dispenser at which it detects the employee's hand. Then he looks at
the difference in the sample means ( Light - TDark).
What do we know about the shape of the sampling distribution of Light - TDark, and why?
Answer: The shape cannot be determined since we don’t know the shape of either population distribution.
Step-by-step explanation:
Hi can someone please help me with this. It urgent and time tysm.