Answers
Answer:
x=5
Step-by-step explanation:
First, let's understand logarithms.
When there is no base given, like in this problem's right side of the equation, the base is automatically 10.
So, let's re-write that.
[tex]\frac{7}{x+2}=log_{10}x+5[/tex]
Now, let's test a few of the numbers out. For brevity, I already know it's 3. Let's show you why.
[tex]\frac{7}{5+2} =log_{10}(5+5)\\\frac{7}{7} = log_{10}(10)\\1 = 1[/tex]
Related Questions
What is the probability that a randomly chosen student is a boy that prefers comedy movies?
I NEED HELPPO ASAP
Answers
Expiation I don’t got one
Answer:
12/35
Step-by-step explanation:
i don’t know the decimal but you can figure that out quickly
Gretchen measured the length of her toaster, to the nearest half inch to be 9 inches. Steve measured the toaster to the nearest quarter inch and found it measured 9 1/4 inches. Who used a more precise measurement?
Answers
Hope this helps :D
39kg 756g + 52kg 670g
Answers
Answer:
1517g or 1.517kg
Step-by-step explanation:
4) Find the value of k if (-2)k × (-2)3 = (-2)7
Answers
Answer:
k = 4
Step-by-step explanation:
(-2)k+1 × (-2)3 = (-2)7
-2k + -6 = -14
- 2k = -14 + 6
- 2k = - 8
k = -8 / -2
k = 4
HOPE IT HELPS ...
PLZZZ.MARK ME AS BRAINLIEST..
Forty percent of the home owners applying for a home equity loan are approved by lenders. If in a given day 20 applications are received, what probability distribution should be used to calculate the probability that 10 applications are approved
Answers
Answer:
Binomial probability distribution.
0.1171
Step-by-step explanation:
p = 40% = 0.4 ; q = 1-p = 1 - 0.4 = 0.6
n = 20 ; x = 10
P(x = x) = nCr * p^x * q^(n-r)
P(x = 10) = 20C10 * 0.4^10 * 0.6^10
P(x = 10) = 184756 * 0.0001048576 * 0.0060466176
P(x = 10) = 0.11714155
P(x = 10) = 0.1171
Write and solve using a proportion to find the missing length
Answers
Answer:
n = 2.6
Step-by-step explanation:
6.5 : 5
n : 2
6.5/5 = 1.3
2 x 1.3 = 2.6
n = 2.6
i hope this helps
1.2 m
2.5 m
K 사
3.5 m
The front of a house needs to be painted black. The garage door is 1.5 m high and 2 m wide.
A) How many square meters of black paint will be nee not to paint the house not including the
garage door?
Show your work
B) if one gallon of paint covers 0.5 square meters, how many gallons of black paint will they need to paint the house
Answers
Answer:
B) for the answer just divide the square meter with 2 and that should be your answer
Write sin 53° in terms of cosine.
Answers
Answer:
cos(37°)
Step-by-step explanation:
sin(53°) = cos(90° - 53°)
sin(53°) = cos(37°)
Some values of the linear function f are given in the table shown. What is the value of f(100)?
Answers
Answer:
f(100) = 160.
Step-by-step explanation:
Linear function:
The equation of a linear function has the following format:
[tex]y = mx + b[/tex]
In which m is the slope(how much f(x) changes when x changes by 1) and b is the y-intercept(value of f(x) when x = 0).
Finding the slope:
Suppose we have two points. The slope is the change in the output divided by the change in the input.
In this question, we have points (45,50) and (60,80).
Change in the output: 80 - 50 = 30
Change in the slope: 60 - 45 = 15
Slope: 30/15 = 2
So
[tex]y = 2x + b[/tex]
Point (45,50)
This means that when [tex]x = 45, y = 50[/tex]. We use this to find the value of b.
[tex]y = 2x + b[/tex]
[tex]50 = 2(45) + b[/tex]
[tex]b = -40[/tex]
So
[tex]y = 2x - 40[/tex]
With y = f(x)
What is the value of f(100)?
This is y when x = 100. So
[tex]f(100) = 2(100) - 40 = 200 - 40 = 160[/tex]
f(100) = 160.
Nelson recorded the shoe sizes of some students and teachers around his school. The results are given
in the table. Use the drop-down menus to describe a line plot that would correctly show this data.
5 926 102 536
11 11 5 7 10 9
9
6 10 6 10
NI
2
2
How many numbers on the line plot have 1 dot above them? Choose
How many numbers on the line plot have 2 dots above them? Choose.
How many numbers on the line plot have 3 dots above them? Choose
Answers
Answer:
1 number on the line plot has 1 dot above it. 6 numbers on the line plot have 2 dots above it. 2 numbers on the line plot have 3 dots above it!
Hope this helps :)
The 1 number on the line plot has 1 dot above it. 6 numbers on the line plot have 2 dots above it.
2 numbers on the line plot have 3 dots above it.
We have given that,
Nelson recorded the shoe sizes of some students and teachers around his school. The results are given.
in the table. Use the drop-down menus to describe a line plot that would correctly show this data.
What is the drop-down?
A drop-down list is a graphical control element, similar to a list box, that allows the user to choose one value from a list. When a drop-down list is inactive, it displays a single value. When activated, it displays a list of values, from which the user may select one.
5 926 102 536 11 11 5 7 10 9 9 6 10 6 10
NI 2 2
Therefore the 1 number on the line plot has 1 dot above it. 6 numbers on the line plot have 2 dots above it.
To learn more about the drop-down visit:
https://brainly.com/question/11827791
#SPJ2
Please ASAP answer this question:)
Answers
Answer:
17 in
Step-by-step explanation:
H²= 8²+15²
H²= 64+225
H²=289
H= √289
H= 17
Answer:
17 in. (option C)
Step-by-step explanation:
Pythagorean Theorem: a² + b² = c²
Set the hypotenuse as x.
8² + 15² = x²
Simplify.
x² = 289
Remove the square from both sides.
x = √289 = 17
Thus, the answer is C, 17.
PLS HELP WILL GIFT 50+ POINTS TO THE FIRST PERSON WHO WILL ANSER ANSER AND EXPLAIN THROUGHLY PLZ HELP!!!
Answers
Answer: it is invalid
Step-by-step explanation: it is invalid because the data table has 30 out of 100 people stating that they prefer to view movies in theater. This does not have the same ratio as 300 out of 400, and would only work had he said 300 out of 1000. Thus, he is incorrect in his inference.
Solve for n: 8n = 56
n=1/7
n = 7
n = 48
n = 64
n= 448
Answers
Answer:
The answer is number 7
Step-by-step explanation:
56÷8=7
n= 7
You divide by 56
What number will make the equation true?
0.35+65/100=?/100+65/100
Answers
Answer:
The Answer Is 35A group of 8 students was asked, "How many hours did you watch television last week?" Here are their responses:
4, 7, 9, 16, 20, 19, 5, 14
Find the median and mean number of hours for these students.
If necessary, round your answers to the nearest tenth.
Median:
Х
5
?
hours
Mean: hours
Answers
Answer:
Median= 14
Mean= 90
Step-by-step explanation:
Median:
Put the numbers in order,
4, 7, 9, 14, 16, 19, 20 Then after that you find the number exactly in the middle. That number ends up to be 14.
Mean:
Add up all of the numbers and then round it to the nearest tenth: 90
Median= 14
Mean= 90
Milton brings juice for a class party.
He brings 2 gallons of orange juice.
He brings 0.4 gallon of grape juice.
He brings 125 gallons of apple juice.
How many total gallons of juice did Milton bring to the party?
3 2/5
2 4/5
3 3/5
3 4/5
Answers
Answer:
You can sum these quantities to get the answer. ( 127.4 gallons)
Step-by-step explanation:
[tex]2 + 0.4 + 125 = 127.4[/tex]
I hope that is useful for you :)
Answer: 3 4/5
Step-by-step explanation:
what percent of the population has an IQ score between 115 and 130?
Answers
Answer:
68% of the individuals in the population have an IQ between 85 and 115. 95% of the population has IQ scores between 70 and 130. 99.7% of the population has IQ scores between 55 and 145.
Step-by-step explanation:
I don’t know what I’m doing
Answers
Answer:
lol
Step-by-step explanation:
2. A 16 foot ladder is leaning against a house. The ladder's angle of elevation is 47 degrees. How
far above the ground is the top of the ladder?
Answers
For a sample of 9 automobiles, the mileage (in 1000s of miles) at which the original front brake pads were worn to 9% of their original thickness was measured, as was the mileage at which the original rear brake pads were worn to 9% of their original thickness. The results were as follows: Car Rear Front 1 40.6 32.5 2 35.4 27.1 3 46.6 35.6 4 47.3 35.6 5 38.7 30.3 6 51.2 41.1 7 50.6 40.7 8 45.9 34.3 9 47.2 36.5 Send data to Excel Part: 0 / 20 of 2 Parts Complete Part 1 of 2 (a) Construct a 99.5% confidence interval for the difference in mean lifetime between the front and rear brake pads. Let d represent the mileage of the rear pads minus the mileage of the front ones. Use tables to find the critical value and round the answers to at least two decimal places. A 99.5% confident that the mean difference in lifetime between front and rear brake pads is
Answers
Answer:
CI =[- 4.588; 15.4]
Since the calculated value of t= 4.244 falls in the critical region so we reject H0 and conclude that we are not confident that the mean difference in lifetime between front and rear brake pads is 99.5%
Step-by-step explanation:
The given data is
Car Rear Front d= rear- front
1 40.6 32.5 8.1
2 35.4 27.1 8.3
3 46.6 35.6 11
4 47.3 35.6 11.7
5 38.7 30.3 8.4
6 51.2 41.1 10.1
7 50.6 40.7 9.9
8 45.9 34.3 11.6
9 47.2 36.5 10.7
∑ = 89.8
Let the hypotheses be
H0: ud= 0 against the claim Ha: ud ≠0
The degrees of freedom = n-1= 9-1= 8
The significance level is 0.05
The test statistic is
t= d`/sd/√n
The critical region is ║t║≤ t (0.025,8) = ±2.306
Sd= 7.05434553
d`=∑d/n= 89.8/9= 9.978
Therefore
t= d`/ sd/√n
t= 9.978/ 7.054/√9
t= 4.244
1) Since the calculated value of t= 4.244 falls in the critical region so we reject H0 and conclude that we are not confident that the mean difference in lifetime between front and rear brake pads is 99.5%
2) the confidence interval for the difference of two samples can be calculated by
d ` ± td sd/√n
9.978 ±2.306* 7.054/√9
- 4.588; 15.4
Do you guys know this?
Answers
Answer:
yeah it's B
hope this helps
have a good day :)
Step-by-step explanation:
Answer:
answer is d
Step-by-step explanation:
4+3=7
2i+I=3i
Find the volume..........
Answers
Answer:
Volume = 1,437.3 cm³
Step-by-step explanation:
Volume of rectangular pyramid = ⅓*a²*h
Where,
Base edge = a = 14 cm
Height = h = 22 cm
Plug in the values
Volume = ⅓*14²*22
Volume = 1,437.3 cm³ (nearest tenth)
4n/5=84/15
i cannot figure out this math problem for my homework!
Answers
4n(15)=84(5)
60n=420
420/60=7
Answer: n=7
Find the 30th term of the following sequence. 1, 7, 13, 19, ...
Answers
Answer:
175
Step-by-step explanation:
a30 = a1 + f × (n-1)
f= difference between numbers
Name ____________________________ Class________ Date ____________________________ Directions: Each diagram is formed by two parallel lines and a transversal. Find the value of . Use your answers to navigate through the maze. SHOW ALL STEPS! Show your work
Answers
Step-by-step explanation:
How are we supposed to help...?
A triangle has height 4ft and an area 64ft square What is the length of its base?
Answers
Answer:the answer is 60
Step-by-step explanation:
The question is “what is the length” so what I think we are supposed to do is to add since the height is 4 and the area is 64 so the length has to be 6
Hope I helped
1) Juan purchased 3.4 pounds of nails at a cost of $4.50 per pound. What
was the cost of the nails? *
Answers
Answer:
the answer is 15.3. hope this helps:)
Step-by-step explanation:
Which titles fits this Venn diagram best?
A Venn diagram with 2 circles. The left circle is titled Title 1 with entries a group of occupations with similar tasks; examples: law enforcement, agriculture, pharmaceuticals. The right circle is titled Title 2 with entries a specific set of responsibilities and tasks performed; examples: waitress, peach farmer, police dispatcher. The middle has entries involve a person's daily work, done to earn money.
Title 1 is “Jobs” and Title 2 is “Careers.”
Title 1 is “Careers” and Title 2 is “Jobs.”
Title 1 is “Self-Employed” and Title 2 is “Company-Employed.”
Title 1 is “Company-Employed” and Title 2 is “Self-Employed.”
Answers
Step-by-step explanation:
I am not sure what that has to do with math. this is more "English" or social studies or something like this.
but clearly "title 2" describes "jobs" and "title 1" describes career paths in general.
people in both churches can be self- or company-employed.
so, the second answer option ("Careers" and "Jobs") is right.
Select the correct answer.
Pat and Quentin collect trading cards. They each began the year with cards already in their collection and buy more cards every month.
The number of cards in Pat’s collection, x months after the start of the year, is modeled by function p:
p(x) = 34 + 16x.
The number of cards in Quentin’s collection, x months after the start of the year, is modeled by function q:
q(x) = 28 + 12x.
Which function correctly represents how many more cards Pat has in her collection than Quentin has in his collection, x months after the start of the year?
A.
(p − q)(x) = 62 + 4x
B.
(p − q)(x) = 6 + 4x
C.
(p − q)(x) = 6 + 28x
D.
(p − q)(x) = 62 + 28x
Answers
The expression that represents how many more cards Pat has in her collection than Quentin has in his collection is B. (p − q)(x) = 6 + 4x
What is a expression?An expression simply refers to the mathematical statements which have at least two terms which are related by an operator and contain either numbers, variables, or both.
Pat's collection is represented as p(x) = 34 + 16x.
Quentin's collection is represented as q(x) = 28 + 12x.
The difference will now be:
= 34 + 16x - (28 + 12x)
= 34 + 16x - 28 - 12x
= 6 + 4x
Therefore, the correct option is B.
Learn more about expressions on:
brainly.com/question/723406
#SPJ1
Lola had $235.00 in her savings account. Three months later, Lola had
$136.30 in her account. What was the percent decrease of Lola's savings
account?
Answers
Answer: decreased by 42%
Step-by-step explanation: