Answer:
0
Step-by-step explanation:
1.If +20 represents 20 m above sea level, then –20 represents?
1.If +90 represents a movement of 90 m to the north then _90 represents?
Answer:
-20 represents 20m below sea level.
-90 represents a movement of 90m to the South.
A city park is in the shape of a rectangle with width of 25 yd. and length of 60 yd. What is the length of the diagonal that runs across the park?
A.
B.
C.
D.
Answer:
65 yd
Step-by-step explanation:
The diagonal of a rectangle can be found using
Pythagoras' Theorem a² + b² = c²
(where a and b are the legs, and c is the hypotenuse of a right triangle)
Given:
a = 25b = 60⇒ 25² + 60² = c²
⇒ c² = 4225
⇒ c = √4225
⇒ c = 65
Therefore, the length of the diagonal is 65 yd
What is the average
112, 109, 115
Add them and dividde by the number of numbers, which is 3.
112 + 109 + 115 = 336
336/3 = 112.
The average is 112.
A town had a population of 10,000 people. the population decreased 3% each year. what was the population 5 years later?
Answer:
8,588 people
Step-by-step explanation:
We can represent this exponential decay as [tex]P=10000(0.97)^n[/tex] where [tex]n[/tex] is the number of years later:
[tex]P=10000(0.97)^n\\\\P=10000(0.97)^5\\\\P=10000(0.8587340257)\\\\P=8587.340257\\\\P\approx8588[/tex]
Therefore, the population 5 years later will be 8,588 people
Step-by-step explanation:
Ok so after the first year we expect the population to reach 97% of it's initial population.
So 97% of 10 000 can be written as:
97/100 ×10 000=0.97×10 000=9 700
After the second year we expect the population to drop to 97% of the first year's population
So, it can be said that:
0.97×9700= 9409
Similarly after year 3,
0.97× 9409= 9126.73
Year 4,
0.97× 9126.72= 8852.9281
Year 5,
0.97× 8852.9281=8587 rounded to the nearest number
The new population would be 8587
A family took a road trip and traveled west a distance of 350 kilometers in 7 hours. What was their velocity during this
Answer:
50 km/h
Step-by-step explanation:
so you traveled total of 350 (km) in 7 (hours) right?, just take 350, divide it by 7, which will give you km/h. (or 50 km/h) and then when you add a direction it like "west" it's no longer a speed it's a velocity.
Displacement given (in metres) = (350 × 1000)m.
Displacement = 350000 metres.
Time = (7× 3600) seconds
Time = 25200 seconds.
Velocity = Displacement / Time
Velocity = 350000 / 25200
Velocity = 13.89m/s
Approximately, Velocity = 14m/s.
26 x (-48) + (-48) x (-36) pls tell the answer
-1248 -1248 -. 936
- 3432
You can find the derivative of the inverse function by differentiating the inverse explicitly, or by using the formula:
If a function f(x) has an inverse f ⁻¹(x), then by definition
[tex]f\left(f^{-1}(x)\right) = x[/tex]
Differentiating both sides with respect to x yields
[tex]f'\left(f^{-1}(x)\right) \times \left(f^{-1}\right)'(x) = 1 \implies \left(f^{-1}\right)'(x) = \dfrac1{f'\left(f^{-1}(x)\right)}[/tex]
Now, if f(a) = b and b = f ⁻¹(a), then
[tex]\left(f^{-1}\right)'(a) = \dfrac1{f'\left(f^{-1}(a)\right)} = \dfrac1{f'(b)}[/tex]
Can you help- TEST tomorrow
WILL MAKE YOU BRAINLIEST
{{{{{Need to show my work}}}}}}}
Answer:
m = 3/4x + 4
I am not sure if this is what you are working on, hopefully this helps.
In ΔIJK, i = 2.2 inches, j = 3.6 inches and k=5.1 inches. Find the measure of ∠K to the nearest degree.
Answer:
3.3
Step-by-step explanation: it said too the nearest so i think 3.3 cause its already 3.6
Answer: 121
Step-by-step explanation:
FROM EDMENTUM!!!!
Which of the following interpretations for the given expression is correct?
(5 y2 – 7)3
(2y)
Answer:
B
Step-by-step explanation:
the cube (this is the ³ at the end of the numerator) of
the difference of 5 times the square of y and 7 :
(5y² - 7)
all divided by the square (that is the ² at the end of the denominator) of
2 times y :
(2y)
A would be
((5y)² - 7)³/(2y)²
C would be
(((5y)²)³ - 7)/(2y²)
D would be
(5y² - 7)³/(2y²)
Which is equivalent to 3.25%?
O 0.0325
O 0.325
O 32.5
O 325
Can someone hurry and answer this question?
Answer:
The first choice.
Step-by-step explanation:
hope this helps!
Answer:
A is the answer took test on e2020
Step-by-step explanation:
someone answer this question plsss
Elapsed Time :
1. 24min - 9min = 15 Minutes
2. 56min - 48min = 8 Minutes
3. 36min -5min = 31 Minutes
4. 55min - 3min = 52 Minutes
5. 45min - 11min = 34 Minutes
PS. Mark as brainliest if this helped! :) Trying to get to Virtuoso.
How to simplify 10x – 8x + 2 + 10
Answer: 2(x+6)
Step-by-step explanation:
add the numbers
10x - 8x + 2 + 10
10x - 8x + 12
combine like terms
10x - 8x + 12
2x + 12
common factors
10x - 8x + 2 + 10
the answer is
2(x+6)
a bakery has a bag of 40 cups of flour.15 cups of flour have already been used for bread,where the relainder was used to bake 150 cupcakes.how much flour is in each cupcake?
Answer:
1/6 cup of flourStep-by-step explanation:
Remainder of cups of flour is:
40 - 15 = 25 cups25 cups of flour used to bake 150 cupcakes.
Each cupcake has:
25/150 = 1/6 cup of flourConvert the following into a FRACTION GREATER THAN 1. (Improper fractions)
3 3/7 & 3 5/6
Answer:
1.[tex]\frac{24}{7}[/tex]
2.[tex]\frac{21}{6}[/tex]
Step-by-step explanation:
Given the following questions:
[tex]3\frac{3}{7} \\3\frac{5}{6}[/tex]
To convert mixed numbers into improper fractions we need to multiply the denominators by the whole numbers, and then add that answer to the numerator while of course keeping the denominator the same.
Question one:
[tex]3\frac{3}{7} \\3\frac{3}{7} =7\times3=21+3=24=\frac{24}{7} \\=\frac{24}{7}[/tex]
Question two:
[tex]3\frac{5}{6} \\3\frac{5}{6}=6\times3=18+3=21=\frac{21}{6} \\=\frac{21}{6}[/tex]
Your answers are "24/7, and 21/6."
Hope this helps.
Two side lengths of a triangle are 7 inches and 12 inches. Which choice could be the length of the third side?
Answer:
between 2 and 12.
Step-by-step explanation:
Hope this helps :)
If 12 inches = 1 foot, how many inches are in 8 feet?
Answer:
96 inches
Step-by-step explanation:
Given the following question:
12 inches = 1 foot
To find the answer we simply need to multiply 12 by 8, since every 12 inches are equal to 1 foot and we need to find how many inches are in 8 feet.
[tex]12in=1ft[/tex]
[tex]8\times12=96[/tex]
[tex]=96in[/tex]
8 feet is equal to "96 inches."
Hope this helps.
Suppose a city with population 800,000 has been growing at a rate of 8% per year. If this rate continues, find the population of this city in 16 years.
Answer:
2,740,754.11467 or 2,740,754
Step-by-step explanation:
800,000(1.08)^16
y=a(b)^x
a is the starting point
b is growth
x is years
you get the growth by adding 8 to 100 then dividing by 100.
what could be a multiplicity of the root at x=1
Answer:
The answer is 4
Step-by-step explanation:
Edge 2020
Answer:
it is 4
Step-by-step explanation:
What are the steps of solving 5r + 16r - 6
Answer:
Step-by-step explanation:
Combine like terms:
21r - 6
Sam has a water bottle that holds 250 milliliters of water when full. He needs to fill a 5-liter water jug for his team. If Sam uses the water bottle to fill the jug, how many times does he need to fill the water bottle in order to fill the jug?
Answer: he needs to fill it 20 times
Step-by-step explanation:
micheal is knitting a blanket. she can knit 6 rows per minute. which rate is equivalent to the rate at which micheal is knitting?
Answer:6 rows per minute
Step-by-step explanation:
Solve for x:
3*4+-9-x=10
Answer:
-7
Step-by-step explanation:
first multiply 3 and 4 because PEMDAS
so it now looks like
12 - 9 - x = 10
now minus 12 and 9
3 - x = 10
move x to the other side by adding x to both sides
3 = 10 + x
and move 10 to the other side by subtracting 10 to both sides
3 - 10 = x
x = -7
now check
3*4 - 9 - (-7) = 10 ?
12 - 9 + 7 = 10 ?
3 + 7 = 10 ?
10 = 10
Step-by-step explanation:
[tex]3\cdot \:4+\left(-9\right)-x=10[/tex]
[tex]\mathrm{Remove\:parentheses}:\quad \left(-a\right)=-a[/tex]
[tex]3\cdot \:4-9-x=10[/tex]
[tex]\mathrm{Multiply\:the\:numbers:}\:3\cdot \:4=12[/tex]
[tex]12-9-x=10[/tex]
[tex]\mathrm{Subtract\:the\:numbers:}\:12-9=3[/tex]
[tex]-x+3=10[/tex]
[tex]\mathrm{Subtract\:}3\mathrm{\:from\:both\:sides}[/tex]
[tex]-x+3-3=10-3[/tex]
[tex]Simplify[/tex]
[tex]-x=7[/tex]
[tex]\mathrm{Divide\:both\:sides\:by\:}-1[/tex]
[tex]\frac{-x}{-1}=\frac{7}{-1}[/tex]
[tex]Simplify[/tex]
[tex]x=-7[/tex]
PLEASE HELPPP
Given the following equation
y=2|x+4|-3 how do the 2, 4, and 3 change the original graph of an absolute value?
Check the picture below, with that template in mind
[tex]y = \stackrel{A}{2}|\stackrel{B}{1}x+\stackrel{C}{4}|\stackrel{D}{-3}\qquad \begin{cases} A=2~~,~~B=1\\ \qquad \textit{shrinks by a factor of 2}\\ B=1~~,~~C=4\\ \qquad \textit{horizontal leftwards shift by }\frac{4}{1}=4\\ D=-3\\ \qquad \textit{vertical downwards shift by 3} \end{cases}[/tex]
What do we call a number after 1 is divided by it?
Answer:
I think absolute value
Step-by-step explanation:
One divided by anything is that same number
EX.
1/100=100
But if the number is negative it would still be that number just in negative form.
Ex.
1/(-3)= -3
Can I get Brainlest if you found this answer helpful
[NRAA]
One- (number)+th
eg- one tenth
one eighth
[xArtsy]
Find the slope of the line
Answer:
Step-by-step explanation:
(y2-y1)/(x2-x1)
-3-(-3)/(2-1)=0
The US Census reported that it takes workers an average of 28 minutes to get home from work with standard deviation 5 minutes. A random sample of 10 workers in a large metropolitan area showed an average time to get home from work to be 32 minutes. Is this evidence that workers in the large city take longer than 28 minutes to get home from work.
Using the z-distribution, as we have the standard deviation for the population, to test the hypothesis, it is found that this is evidence that workers in the large city take longer than 28 minutes to get home from work.
What are the hypothesis tested?At the null hypothesis, it is tested if the mean time is of 28 minutes, that is:
[tex]H_0: \mu = 28[/tex]
At the alternative hypothesis, it is tested if the mean time is greater than 28 minutes, that is:
[tex]H_1: \mu > 28[/tex].
What is the test statistic?The test statistic is given by:
[tex]z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
The parameters are:
[tex]\overline{x}[/tex] is the sample mean.[tex]\mu[/tex] is the value tested at the null hypothesis.[tex]\sigma[/tex] is the standard deviation of the sample.n is the sample size.In this problem, the values of the parameters are given by:
[tex]\overline{x} = 32, \mu = 28, \sigma = 5, n = 10[/tex]
Hence:
[tex]z = \frac{\overline{x} - \mu}{\frac{\sigma}{\sqrt{n}}}[/tex]
[tex]z = \frac{32 - 28}{\frac{5}{\sqrt{10}}}[/tex]
[tex]z = 2.53[/tex]
What is the decision?Considering that we have a right-tailed test, as we are testing if the mean is greater than a value, with a standard significance level of 0.05, the critical value is of [tex]z^\ast = 1.645[/tex].
Since the test statistic is greater than the critical value, it is found that this is evidence that workers in the large city take longer than 28 minutes to get home from work.
To learn more about the z-distribution, you can check https://brainly.com/question/26454209
4 hundred thousands – 2 thousands pls answer ASAP
Answer:
398,000
Step-by-step explanation:
400,000-2,000=398,000
In word form the answer is three hundred ninety-eight thousand
I hope that has helped :)
a bag of marbles contains 7 Red five blue for green and two yellow marbles John Celexa marble replaces it then selects another marble what is the probability that John's selects a red marble and then a yellow marble
Answer: 4.3%
Step-by-step explanation:
18^2 = 324
7 * 2 = 14
14/324 = 7/362 = 4.3%
PLEASE HELPPP!:( i’ll mark brainlest to whoever is right!