Answer:
9 mm wide
Step-by-step explanation:
Perimeter = length x 2 + width x 2
34 mm = 16 mm + ?
34mm = 16 mm + 18 mm
18/2 = 9
9 mm wide
Answer:
p=2L+2W
34mm=(2×8)+2W
34mm=16+2W
2W=34mm-16mm
2W=18mm
W=9mm
Chemists use pH as a measure of acidity or alkalinity of a solution. It uses the concentration of hydrogen ions H+ in a logarithmic function. A chemist is studying the alkalinity of a hot spring near a volcano. The hydrogen ion concentration is increasing according to the function f(d) = (0.5 × 10–4)d, where d is the number of days. The function for pH is g(H+) = –log10(H+), where H+ is the hydrogen ion concentration of the solution. Which function shows the pH of the hot spring as a function of d? g(f(d)) = –log10(d) g(f(d)) = –d(log10(0.5 × 10–4)) g(f(d)) = –log10((0.5 × 10–4)d) g(f(d)) = –log10(d × 10–4)
Answer:
[tex]g(f(d)) = -dlog_{10}(0.5 * 10^{-4})[/tex]
Step-by-step explanation:
Given
[tex]f(d) = (0.5 * 10^{-4})^d[/tex]
[tex]g(H+) = -log_{10}(H+)[/tex]
Required
Find the composite function g(f(d))
We have:
[tex]g(H+) = -log_{10}(H+)[/tex]
Substitute f(d) for H+
[tex]g(f(d)) = -log_{10}(f(d))[/tex]
Substitute [tex]f(d) = (0.5 * 10^{-4})^d[/tex]
[tex]g(f(d)) = -log_{10}((0.5 * 10^{-4})^d)[/tex]
Apply law of logarithm
[tex]g(f(d)) = -dlog_{10}(0.5 * 10^{-4})[/tex]
Hence, the function is:
[tex]g(f(d)) = -dlog_{10}(0.5 * 10^{-4})[/tex]
Answer:
It's C
Step-by-step explanation:
someone please help.
Estimate -54² to the nearest integer
Chau and Maria each opened a savings account today. Chau opened his account with a starting amount of $510, and he is going to put in $80 per month. Maria opened her account with a starting amount of $590 and she is going to put in $60 per month
If the exponential model f(x)=9(13)x is written with the base e, it will take the form A0ekx. What is A0 and what is k?
9 × 13ˣ = 9 × exp(ln(13ˣ ))
… = 9 × exp(x ln(13))
… = A₀ × exp(kx)
so that
A₀ = 9
k = ln(13)
What value will make the equation true?
2.1 - ?= 1 1/2
A 3.6
B 0.6
C-0.6
D -3.6
Answer:
C
Step-by-step explanation:
The answer is C
PLS HELP. If the spinner shown below was used 100 times, how many times can you expect to spin a number greater than 3?
3
60
2
40
Answer:
1/5 of the times or 20 times
Step-by-step explanation:
because there are 5 sections and 1 possible answer, the answer is 100/5 and that is 20
Please help me out. I will be picking the brainiest Answer!!!
Answer:
72 M
Step-by-step explanation:
You have to multiply 12 by 6,and to make it easier,you can draw a multiplication chart type thing,where once you drew all of the lines,it would make squares.Count all the squares and that's your answer.
Please help I’ll do anything :(
Answer:
it goes by 2 to 4 to 8 to 12 to 16 so therefore your answer is 4
Step-by-step explanation:
A kitchen was remodeled and granite counter tops were installed A rectangular island in the kitchen now has a granite top measuring 8 ft by 5.3 inches. The density of granite is 2.7 kg/cm3.
don't forget to change to inches to feet and feet to centimeters.
how much does the counter top weigh in pounds? 1 kg= 2.2 pounds .
Answer:
Problem: if I correctly recall from my days of carving tombstones, the density of granite is not 2.7 kg/cm³, but 2.7 g/cm³
At 2.7 kg/cm³, the weight is 3,664,392 pounds
at 2.7 g/cm³, the true weight is 3664.39 pounds
Step-by-step explanation:
8 ft = 243.84 cm
5.3 inches = 13.46 cm
6 ft 2 in = 187.96 cm
volume = 243.84 cm x 13.46 cm x 187.96 cm = 616,901.01 cm³
616,901.01 cm³ × 2.7 kg/cm³ x 2.2 lb/kg = 3,664,392 pounds
2.7 g/cm³ = 0.0027 kg/cm³
616,901.01 cm³ × 0.0027 kg/cm³ x 2.2 lb/kg = 3664.39 pounds
Write 0.31% as a decimal.
Answer:
0.31% = 0.0031 in decimal form.
Step-by-step explanation:
Percent means 'per 100'. So, 0.31% means 0.31 per 100 or simply 0.31/100. If you divide 0.31 by 100, you'll get 0.0031 (a decimal number).
A bag with 6 marbles has 2 blue marbles, 1 yellow marble, and 3 red marbles. A marble is chosen from the bag at random. What is the probability that it is blue?
Write your answer as a fraction in simplest form.
Please help im struggling so much and nobody ever actually helps litterally im so stressed with online school and i need help really bad so please make my dat why helping me IM SO STRESSED :(
Answer:
4/12
Step-by-step explanation:
hope this helps and have a great day
can u mark me as brainliest plz and thx
Evaluate the expression using properties of operations.
1
-1.2 = 3x5x (2)
6
OA) -72
OB) 2
OC) 72
OD 120
Answer:
Step-by-step explanation:
OA) -72
The sum of eight and a number is added to thirty-six.
Answer:
uh 44 i guess
Step-by-step explanation:
Due by the end of today Plz HELP!!
Write the equation of a line through the point (5,4) that is perpendicular to the line y=-5/3x-2
Answer:
y=3/5x+1 because when a line is perpendicular to another line the slope it the opposite meaning negative to positive or positive to negative
you also reverse the number/ fraction...for example, if the slope was 2 the slope in the other equation would be -1/2. if the slope in the first equation was 1/2 the second equation slope would be -2 since it is the opposite and flipped
Step-by-step explanation:
Calculate the area of a circle to the nearest tenth if the diameter is 28 cm. *
Answer:
616
Step-by-step explanation:
30% of what number is 7.5??
Answer:
x = 25
Step-by-step explanation:
the question can be given as x * .3 = 7.5, or rearanged into
7.5/0.3 = x
75/3 = x if you multiple the fraction by 10/10
x = 25 in this case
7p+5q+4p-2q what is the result of combining the like terms
Answer:
11p+7q
Step-by-step explanation:
The light from the Cape Florida Lighthouse in Key Biscayne is visible for a distance of 15 mi. If the beam of light sweeps in an arc of 270°, what is the area covered by the beam?
Answer:
Area covered by beam = 530 mi² (Approx.)
Step-by-step explanation:
Given:
Radius = 15 mi
Arc angle = 270°
Find:
Area covered by beam
Computation:
Area of sector = [θ/360][π][r²]
Area covered by beam = [270/360][22/7][15²]
Area covered by beam = [0.75][3.1428][225]
Area covered by beam = 530 mi² (Approx.)
If a/b = 2/3, then 3a = ___.
Answer:
2b
Step-by-step explanation:
a/b = 2/3
3a = 2b
What is the value of the expression when m= 8 and n=5?
m + 35 - n
Answer:
8 + 35 - 5
43 - 5
38
Answer:
38
Step-by-step explanation:
8+35−5
Add 8 and 35 to get 43.
43−5
Subtract 5 from 43 to get 38.
38
What is the solution to the system of equations graphed below?
Answer:
A
Step-by-step explanation:
The solution to a system of equations given graphically is at the point of intersection of the 2 lines.
The point of intersection is (- 1, 3 ) ← solution
The diameter of a wheel is 70 cm. How many times will the wheel revovle in order to cover a distance of 110 m?
p.s: please answer soon.
Is (a + b) and (a - b)? perfect square trinomials?
O True
O False
Answer:
False
Step-by-step explanation:
Pos and negs cannot be perfect square trinomials
What is the volume of this figure?
1 yd.
2 yd.
3 yd.
1 yd.
4 yd.
2 yd.
cubic yards
Answer:
where is the figure. please provide a figure.
The radius of a circle is 4 cm. Find its area in terms of Pi?
Answer:
50.27 cm
Step-by-step explanation:
4 to the second power=16
16×3.14=50.27
Evaluate 12.3p + 11.5r when p = 6 and r = 7.
Step-by-step explanation:
12.3(6) + 11.5(7)
73.8 + 80.5 = 154.3
Help with math pls it's my last thing for today
Answer:
Standard Form:
325,789
Expanded forms can be written like a sentence or stacked for readability as they are here.
Expanded Notation Form:
325,789 =
300,000
+ 20,000
+ 5,000
+ 700
+ 80
+ 9
Expanded Factors Form:
325,789 =
3 × 100,000
+ 2 × 10,000
+ 5 × 1,000
+ 7 × 100
+ 8 × 10
+ 9 × 1
Expanded Exponential Form:
325,789 =
3 × 105
+ 2 × 104
+ 5 × 103
+ 7 × 102
+ 8 × 101
+ 9 × 100
Word Form:
325,789 =
three hundred twenty-five thousand seven hundred eighty-nine
There were 30 pairs of jeans on sale for 2/3 of the regular price.
The regular price was $36. What was the sale price?
Answer:
$24
Step-by-step explanation:
$36 divided by 3 = 12
12 x 2 = 24
24 = 2/3 of 36
12(3+m)
A.36m
B.36+m
C.36+12m
D.3m+12m
PLEASSSSEEE HELP ASAP 15
Answer:
C. 36+12m
Step-by-step explanation:
When you distribute a number outside the parenthesis, you multiply it to all numbers nor letters in the parenthesis. Hopes this helps