Erika is working on solving the exponential equation 50^x = 17; The solution is x = 0.7242.
What is logarithm?When you raise a number with an exponent, there comes a result.
Let's say you get
a^b = c
Then, you can write 'b' in terms of 'a' and 'c' using a logarithm as follows
[tex]b = \log_a(c)[/tex]
'a' is called base of this log function. We say that 'b' is the logarithm of 'c' to base 'a'
Erika is working on solving the exponential equation 50^x = 17;
however, she is not quite sure where to start.
The equation is
[tex]50^x = 17\\[/tex]
By taking the log both sides
[tex]log_a b = x\\\\a_x = b[/tex]
By using the base formula
[tex]log_0 y = \dfrac{logy}{log b}[/tex]
So, [tex]log_{50} 17= x\\\\[/tex]
[tex]x = \dfrac{log17}{log 50}[/tex]
x = 0.7242
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A bottle contains 1 2/5 litres of orange squash. To make one drink, 1/200 of a litre of squah is needed. How many drinks can be made from the bottle of squash?
Answer:
280 drinks
Step-by-step explanation:
Capacity of bottle [tex]=1\frac{2}{5}=\frac{7}{5}\: l[/tex]Squash needed to make one drink [tex]=\frac{1}{200}\:l[/tex]Total number of drinks [tex]=\frac{7}{5}\div\frac{1}{200}[/tex][tex]=\frac{7}{5}*200[/tex][tex]=7*40[/tex][tex]=280[/tex]Answer:
280 drinks. We need to divide 1 2/5 by 1/200 in order to get this answer.
5600 to the nearest 1000
Answer:
6000.
Step-by-step explanation:
Hundreds digit is 6 so we round up the thousand digit (5) to get 6000.
40 PTS + BRAINLY
The given Stem-and-Leaf Plot displays the number of people who attended the nine-day carnival. What is the mode of the given data set?
STEM | LEAF
5 | 4
6 | 0
7 | 00589
8 | 16
9 | ____
A. 91 B.86 C. 60 D.70
The mode of a given data set is the number that is repeated most often in a given data set. The mode of the given stem-and-leaf plot is 70.
What is the mode of a data set?The mode of a given data set is the number that is repeated most often in a given data set. It can also be described as the number that has the highest frequency of repetition.
As per the given Stem and leaf plot, the number of people who attended the carnival on different days is 54 60 70 70 75 78 79 81 86, since the mode is the number that is repeated very frequently, therefore, the mode of the given data is 70.
Hence, the mode of the given stem-and-leaf plot is 70.
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If x and y are complementary angles, then y is a right angle.
right?
What is the solution of 5sin2θ=3 for 0≤θ≤2π? Please help.
Answer:
C) [tex]\theta\approx\{0.3218,1.249,3.463,4.3908\}[/tex]
Step-by-step explanation:
[tex]5\sin2\theta=3;\: 0\leq\theta\leq 2\pi\\\\\sin2\theta=\frac{3}{5}\\ \\2\theta\approx\{0.6436,2.498,6.926,8.7816\}\\\\\theta\approx\{0.3218,1.249,3.463,4.3908\}[/tex]
hi can someone help I’m doing ixl AND I DONT UNDERSTAND ILL GIVE BRAINLIESST please explain
Answer:
5:9
Step-by-step explanation:
the circumference is d*pi
so you must find the diameter of both circles
31/pi = 9.86760647
which is about 10
57/pi = 18.1436635
which is about 18
10:18 is your ratio
but you can simplify this down to
5:9
6x1 + 9 x 1/10 + 8 x 1/100 + 3 x 1/1000=?
Answer:
6983/1000 OR 6.983
Step-by-step explanation:
6*1=6
9*1/10=9/10
8*1/100=8/100
3*1/1000=3/1000
6+9/10+8/100+3/1000=6983/1000
OR
6.983
Explain the difference between 2(7x-4) and (7x-4)^2
Answer:
2(7x-4) = 7x(2)-4(2) = 14x-8
but
(7x-4)^2 = (7x-4) (7x-4)
Please help me with this!
Answer:
sin(4)
Step-by-step explanation:
sin(-184) is the equivalent to sin(4) (degree), positive and acute angle.
Which of the following choices is the value of cscθ given that cosθ= √2/2?
For the cosecant we will get:
[tex]csc(\pm \frac{pi}{4}) = \frac{1}{sin(\pm \frac{pi}{4})} = \pm \frac{2}{\sqrt{2} } = \pm \sqrt{2}[/tex]
So the correct option is the third one.
Which of the following choices is the value of cscθ given that cosθ= √2/2?First, we can write:
[tex]csc(x) = \frac{1}{sin(x)}[/tex]
Now, remember that:
[tex]cos(x) = \frac{\sqrt{2} }{2} \\\\for\ x = \pm \frac{pi}{4}[/tex]
And for the sine we have:
[tex]sin(pi/4) = \frac{\sqrt{2} }{2} \\\\sin(-pi/4) = -\frac{\sqrt{2} }{2} \\[/tex]
Then the cosecant for these possible values of x gives:
[tex]csc(\pm \frac{pi}{4}) = \frac{1}{sin(\pm \frac{pi}{4})} = \pm \frac{2}{\sqrt{2} } = \pm \sqrt{2}[/tex]
So the correct option is the third one.
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Find the general solution of the given differential equation. Cos(x) dy dx (sin(x))y = 1
The general solution to the differential equation is y = sinx + c cosx.
What is differential equation?It is defined as the equation which contains functions, derivative of the functions to make an expression.
We have a differential equation:
[tex]\rm cosx\left(\dfrac{dy}{dx}\right)+\left(sinx\right)y\:=\:1[/tex]
Multiply by dx:
(cosx) dy + (sinx) y dx = dx
(cosx) dy = (1 - (sinx) y) dx
After simplification and integrating, we will get:
[tex]\rm y = \dfrac{tan x}{sec x}+ \dfrac{c}{secx}[/tex]
y = sinx + c cosx
Thus, the general solution to the differential equation is y = sinx + c cosx.
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There are 9 red and 6 green marbles in a bag. A child reaches in the bag and randomly takes one marble. What is the probability
of that child getting a green marble?
A 66
B
40
с .33
D .10
The weight of vegetables transported by a farmer to a nearby market increases by 15% every month.
The farmer transports 460 pounds of vegetables in April, 529 pounds of vegetables in May, 608.35 pounds of vegetables in June, and 699.60 pounds of vegetables in July.
Approximately how many pounds of vegetables will be transported to the market in August
Using proportions, it is found that 804.54 pounds of vegetables will be transported to the market in August.
What is a proportion?A proportion is a fraction of a total amount, and the measures are related using a rule of three.
In this problem, considering the weight increases by 15% every month, the August amount will be the July's amount multiplied by 1.15, hence:
A = 1.15 x 699.60 pounds = 804.54 pounds.
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given that у=6 cm and θ=15 °, work out x rounded to 1 decimal place.
(the diagram is not drawn to scale.)
Using a trigonometric realtion, we can see that x = 23.18cm
How to find the value of x?Here we have a right triangle, we can see that y = 6cm, and the angle theta is 15°.
Notice that y is the opposite cathetus to the known angle, and we want to find the value of x, which is the hypotenuse.
Then we can use the trigonometric relation:
sin(a) = (opposite cathetus)/hypotenuse.
Reaplacing what we know, we will get:
sin(15°) = 6cm/x
Solving that for x:
x = 6cm/sin(15°9
x = 23.18cm
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Roger works part-time as a waiter at a pizza joint. He earns $9 per hour. How much does he earn for 20 hours of work?
Answer:
20 x 9 = $180 just multiply hours worked times rate per hour
What is the quotient if -3/8 and -1/3
[tex]\left(- \dfrac 38 \right) \div \left(-\dfrac 13 \right)\\\\\\=-\dfrac 38 \times (-3)\\\\\\=\dfrac 98[/tex]
The height in feet is modelled by the function below, where the t is in
seconds after the object hit into the air. Appromixmately which time does the object reach the lowest height?
f(t) = -21² +22t + 6
A. 7 seconds
B. 5 seconds
C. 8 seconds
D. 11 seconds
The object reaches the lowest height at 5 seconds
How to determine the time?The function is given as:
f(t) = -2t² +22t + 6
Differentiate the function
f'(t) = -4t +22
Set to 0
-4t +22 = 0
Subtract 22 from both sides
-4t = -22
Divide both sides by -4
t = 5.5
Remove decimal points
t = 5
Hence, the object reaches the lowest height at 5 seconds
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A random number generator is used to create a list of 200 single-digit numbers. of those 200 numbers, 105 are even and ninety-five are odd. seven was generated fifteen times. what is the experimental probability of an odd number other than seven being generated? 40.0% 45.0% 47.5% 52.5%
Using it's concept, it is found that the probability of an odd number other than seven being generated is of 40.0%.
What is a probability?A probability is given by the number of desired outcomes divided by the number of total outcomes.
For an experimental probability, these number of outcomes are taken from previous trials.
In this problem, 200 numbers have been generated, and 80 are odd numbers that are not seven, hence the probability is given by:
p = 80/200 = 0.4 = 40%.
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Answer:
40
Step-by-step explanation:
Im very stuck lol...
Answer:
Model the expression as 3 groups of x+2.
There are 3 x-tiles.
There are 6 +1 tiles.
The equivalent expression is 3x+6
Step-by-step explanation:
see image. This program is trying to help you learn algebra (here it looks like distributive property) by using a physical model. The bars are x's and the +1's are numbers. The little squares are 1 each (positive or negative, but you only need the positives for this question)
see image.
The lesson is:
3(x+2) = 3x + 6
How do I graph this linear function
x < -1
This is how the linear function looks.
Ava scored 18 points in a basketball game. She scored seven points more than Claire. Let c
be the number of points scored by Claire. Set up an equation that lets you solve for the value
of c.
Answer:
11 points
Step-by-step explanation:
Claire had 11 points because 18-7=11
C+7 =18 is the equation which can be used to find the Claire score C, the value of C is 11.
What is Equation?Two or more expressions with an Equal sign is called as Equation.
Given that Ava scored 18 points in a basketball game.
Let Ave score be represented as A.
Ave scored seven points more than Claire.
Let C be the Claire score.
A=7+C
As given Ava scored 18 points in a basketball
so the value of A is 18
18=7+C
Now let us find the value of C
Subtract 7 from both sides
18-7 =C
11=C
Hence, C+7 =18 is the equation which can be used to find the Claire score C, the value of C is 11.
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2+2/3x=3/7 rewrite without fractions, and answer without decimals, also does anyone know where I could throw this into for an immediate answer?
The answer for the given equation in decimal is -2.357.
What is equation?An equation is a mathematical expression in terms of one or more unknown variable.
Given the equation : 2 +2/3x =3/7
Simplify by Cross multiplication, we get
6 +2x = 9/7
Simplifying further and solving for x
2x = 9/7 -6
2x = -4.714
x = -2.357
Hence, the equation is solved and the value of x is -2.357.
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Consider the following histogram.
A histogram with 5 bars with intervals of equal width. The height of the first bar is 2. The height of the second bar is 5. The height of the third bar is 6. The height of the fourth bar is 5. The height of the fifth bar is 2.
© 2018 StrongMind. Created using GeoGebra.
Which answer correctly describes the shape of the data in the histogram?
left-skewed
right-skewed
symmetrical
uniform
Answer:
The shape of the data in the histogram is Symmetrical.
Step-by-step explanation:
This is because the distribution, or data set is the same to the left and right of the center point.
what are the exact values for x and y
Answer:
see the attachment photo!
Find the percent of the number. 30% of 90 is =
Answer:
27
Step-by-step explanation:
30% of 90 is 27
30/100 = ?/90
by cross multiplying, we can see that 30 times 90 is equal to 2700.
2700/100 = 27
? = 27
PLEASE GIVE BRAINLIEST!
Hope this helps :)
pls help me name and classify the following?!
Answer:
1.Right AngleAn angle whose measure is equal to 90° is called a right angle.
2.Acute AngleAn angle whose measure is more than 0° but less than 90° is called an acute angle. Angles having magnitudes 30°, 40°, 60° are all acute angles.
3.Obtuse AngleAn angle more than 90 degrees and less than 180 degrees, is called an obtuse angle.
Seema is travelling to Australia. She travels a distance of 4,500 km by plane to Dubai and then another 11,700 km to Melbourne. Both planes fly at an average speed of 1,100 kmh-1.
What is her total flight time in hours and minutes, to the nearest minute?
Add the two trips together for total Km’s:
4500 + 11700 = 16,200 km.
divide total km by speed:
16,200 / 1,100 = 14.727272 hours
0.727272 x 60 minutes per hour = 43.636363 minutes, round up to 44 minutes
total time: 14 hours and 44 minutes
Solve the system by graphing.
y = x+2
2x-y=-1
Answer:
The intersection is at (1,3) and the answer is in the graph. (see image below)
Step-by-step explanation:
Hey there, been stuck on the math word problem, please help and give a good explanation :)
Answer:
13.4meters
Step-by-step explanation:
13.4×3×1.5 = 60.3
vol = L X W X H
60.3 = 3 X 1.5 X H
60.3 / 3 / 1.5 = H
PLS HELP
Which shows the following expression after the negative exponents have been eliminated?
Answer:
Option 2
Step-by-step explanation:
Given :
[tex]\frac{xy^{-6} }{x^{-4}y^{2} }[/tex]
=============================================================
Applied Rule :
[tex]\frac{x^{a} }{x^{b} } = x^{a-b}[/tex]
============================================================
Solving :
⇒ To remove negative exponents, bring to the opposite side (e.g. if in the denominator, bring to the numerator)
⇒ [tex]\frac{x(x^{4}) }{y^{2}(y^{6}) }[/tex]