Answer:
v = 2.25 ft/s
Step-by-step explanation:
Given that,
A person is walking at a rate of 9 feet every 4 seconds.
We need to find their speed. We know that, the speed of total distance divided by time taken. So,
[tex]v=\dfrac{d}{t}\\\\v=\dfrac{9\ ft}{4\ s}\\\\v=2.25\ ft/s[/tex]
So, the speed is 2.25 ft/s.
What is 2(x -3) in simplest form?
Answer:
2x-6 is the right answer
Step-by-step explanation:
I'm very good at math
If m∠4 = 101.9°, find each of the following in degrees.
(a) m∠5
(b) m∠8
Answer:
m<5=101.9 m<8=101.9
Step-by-step explanation:
alternate interior and vertical angles
Answer:
(a) m∠5=<4[alternate angle]=101.9°,
(b) m∠8=<5[vertically opposite angle]=101.9°,
If the cost of 10 tables is $750. Find the number of tables that can be purchased with $8250.
Plsss help I suck at math and I’m sure one of you are super smart ♀️
Answer:
3
Step-by-step explanation:
-14x - 7 + 5y - x = -14x - x - 7 + 5y
= -15x - 7 + 5y
Answer:
Step-by-step explanation:
3
What is the purpose of having like terms on each side
of the equation?
Answer:
A frequently-used procedure in algebra is the process of combining like terms. This is a way to "clean-up" an equation and make it much easier to solve. In case you've forgotten, a term is each single part of an expression. For example, in the expression 4x+3+7y 4 x + 3 + 7 y , there are three terms: 4x , 3 , and 7y .
Research has shown that approximately 1 woman in 600 carries a mutation of a particular gene. About66 % of women with this mutation develop cancer. Find the probability that a randomly selected woman will carry the mutation of this gene and will develop cancer.
Answer:
add otherwise I don't know sorry im on that question
Step-by-step explanation:
Sketch the graph of y=4x2^+32x+15 using your graphing calculator. What are the x intercepts of this graph?
Answer:
x= -15/2 or -7.5
x= -1/2 or -0.5
Step-by-step explanation:
please make me brainliest
Answer:
Not C
Step-by-step explanation:
wrong
factor the expression-15x +39
Answer:
3(5−13)
Step-by-step explanation:
..............
Answer:
-3(5x-13)
Step-by-step explanation:
The greatest common factor is 3 and you want the # with the variable to be positive, usually, so just factor -3 out and that's what you get.
find the product (a + 3)(a - 2)
Answer:
a2 + a − 6
Step-by-step explanation:
the a with the 2 beside of it is to the power of
If 210 people said football was their favorite sport to watch, how many people were surveyed? 42% said football.
Answer:
500 people surveyed
Step-by-step explanation:
210 / 42 = 5
5 x 100 = 500
Answer:
500 people were surveyed
Step-by-step explanation:
Let the total number of people surveyed be x
42% said football was their favorite sport to watch
=> 42/100 x = 210
=> x = (210 × 100) / 42
=> x = 21000 / 42
=> x = 500
Therefore, 500 people were surveyed.
Hope it helps :)
Please mark my answer as the brainliest
s - k + x; when s = 7, k = 4, x = 6
what does this mean someone help quick
Answer:
you just plug in those numbers... 7-4+6 = 9
Can someone please help me with continuity? I would like to check my work, I’m a bit confused on the differentiability part
For f to be continuous at some point x = c, you require that
• f(c) exists and is finite, and
• the limits of f as x approaches c from either side match, and their value must be f(c)
For f to be differentiable at x = c, you require that
• f is continuous at c (i.e. the above conditions are all met), and
• the derivative f ' is continuous at c
Without having the graph of f ', you can assess whether the last condition is met by some function by mentally tracing a tangent line to the graph as you get closer to c. If the slope of the tangent doesn't change, then the function is differentiable. This is usually accompanied by jumps or sharp corners in the graph.
Some examples:
• every polynomial is both continuous and differentiable
• the absolute value function |x| is continuous but not differentiable at x = 0
• 1/x is neither continuous nor differentiable at x = 0
(a) Neither continuous nor differentiable
Why? f has a vertical asymptote at x = -2 and f (-2) does not exist. f is not continuous, and therefore not differentiable.
(b) Neither continuous nor differentiable
Why? From the left, f is approaching 2.5, while from the right, it's approaching 5.
(c) Neither continuous nor differentiable
Why? The limits from either side of x = 2 match and are equal to 0.5, but f (2) itself does not exist (which is indicated by the point being a hollow circle).
If the circle was instead filled in, so that f (2) = 0.5, then f would be continuous there, but still not differentiable. Notice the sharp corner. Or, using the tangent-line analysis, the slope of the tangent to the left of x = 2 is negative, but to the right it would be positive.
(d) Both continuous and differentiable
Why? f doesn't have any special features at x = 3 that would suggest it's not continuous nor differentiable.
(e) Neither continuous nor differentiable
Why? Similar reasoning as in (a). There's another vertical asymptote, but the graph shows f (4) = 1. However, the limits from either side of x = 4 are positive infinity, not 1.
Please write these in a fraction form, thank you have an AMAZING day!
1. 2/5 ÷ 1/3= ?
2. 3/4 ÷ 1/2= ?
Answer:
1 = 1 1/5
2=1 1/2
Step-by-step explanation:
f(x) = x? – x3
Select the value of f(-2)
4
-12
12
A
B
C D
Step-by-step explanation:
f(x) = x² - x³
f(-2) = (-2)² - (-2)³
= 4 - (-8)
= 4 + 8 = 12
Find the missing side. Round
to the nearest tenth.
Х
141
43°
у
X=[?]
Answer:
x = 206.7
Step-by-step explanation:
law of sines:
sin 90° / x = sin 43° / 141
sin 43° · x = 141
x = 141 / sin 43°
The measure of the length of the hypotenuse is 206.75 and the measure of the length of the base is 151.20 units.
What is a right-angle triangle?It is a type of triangle in which one angle is 90 degrees and it follows the Pythagoras theorem and we can use the trigonometry function.
The perpendicular is 141 and the angle opposite to the perpendicular is 43 degrees. Then the value of the base and hypotenuse will be
The length of the base will be
[tex]\rm \dfrac{141}{y} = \tan 43^o\\\\y\ \ \ = \dfrac{141}{ \tan 43^o}\\\\y \ \ \ = 151.20[/tex]
Then the length of the hypotenuse will be
[tex]\rm x = \dfrac{141}{\sin 43^o}\\\\x = 206.75[/tex]
More about the right-angle triangle link is given below.
https://brainly.com/question/3770177
#SPJ2
PLEASE PLEASE HELP ASAP 30 POINTS AND WILL GIVE BRAINIEST
what is the measure of angle ABC
What is the measure of angle CBE
what is the measure of angle DBE
What is the measure of angle ABD
Answer:
hope this is what u want
and don't mind my handwriting I wrote it as fast as I could
Which side lengths form a right triangle?
Choose all answers that apply:
A
3.4.5
B
7.8.9
3.9.95
Answer:
A. 3.4.5
Step-by-step explanation:
I looked it up and it forms a right angle.
If 11 times a number is added to twice the number, the result is 78.
Answer:
x = 6
Step-by-step explanation:
Team A scored the following points per game 20,17,25,25,13,25,12,25,25 and 23 team B scored the following points per game 25,25,9,10,25,11,25,15,10 and 25 what is the mean of team A and team B
Answer:
Mean of team A = 21
Mean of team B = 18
Step-by-step explanation:
Formula:
Mean = Sum of values / Number of values
Calculations:
[tex]A = \frac{20+17+25+25+13+25+12+25+25+23}{10} = \frac{210}{10} = 21[/tex]
[tex]B = \frac{25+25+9+10+25+11+25+15+10+25}{10} =\frac{180}{10} =18[/tex]
Mean of team A = 21
Mean of team B = 18
The model below is shaded to represent 7 3/10
Answer:
blue 7.3
Step-by-step explanation:
Answer:
7.3
Step-by-step explanation:
There are 7 groups with 10 parts in each, 7 complete rows are filled in. 3 are left in the last row. This means that there are 7 wholes with 3 left over. 7.3
If the turning point is lower than the nearby point it's called a
Answer:
Step-by-step explanation:
Local minimum. It would be the minimum value of the function not including the end points. If you are including the end points, its an absolute minimum
Can anyone help me pweeezzzz
Answer:
17
Step-by-step explanation:
ABC, which is 9z - 1, and CBD, which is 6z + 58, make up ABD, which is a total of 87 degrees.
in order to find the measurement of ABC, you first need to solve for z.
since ABC and CBD make up ABD, add those measurements and set them equal to 87, which is the measure of ABD.
9z - 1 + 6z + 58 = 87
combine like terms starting with the z terms. (it doesn't matter which like terms you combine first)
9z - 1 + 6z + 58 = 87 ⇒ 15z - 1 + 58 = 87
combine the next set of like terms.
15z - 1 + 58 = 87 ⇒ 15z + 57 = 87
subtract 57 from both sides of the equation. it'll cancel itself out on the left, leaving you with 15z = 30 after subtracting 57 from 87.
divide both sides of the equation by 15.
15z/15 = 30/15 ⇒ z = 2
now, plug in 2 for z in each of your equations for the measurements of ABC and CBD.
ABC = 9z - 1 ⇒ 9(2) - 1 ⇒ 18 - 1 ⇒ 17
CBD = 6z + 58 ⇒ 6(2) + 58 ⇒ 12 + 58 ⇒ 70
now, your measurements are
ABD: 87
ABC: 17
CBD: 70
check your work by adding the measurements of ABC and CBD and setting them equal to ABD, or 87.
17 + 70 = 87
87 = 87
since both sides of the equation are equal to 87, you know that your measurements are correct.
therefore, the measure of ABC is 17 degrees.
I have a big question what is 720 x 0.1
Answer:
72
Step-by-step explanation:
Answer:
72
Step-by-step explanation:
I hope this helps :)
HELP HELPOPPPP-EWOPW0E HELP PLSSSSS
Answer:
6 more girls than boys
Step-by-step explanation:
5 out of 12 are boys (multiply both sides of equation by 3 because 3x12 = 36)
7 out of 12 are girls (multiply both sides of equation by 3 because 3x12 = 36)
so: 15 out of 36 are boys
so: 21 out of 36 are girls
21-15 = 6 more girls than boys
Answer: There are 6 more girls than boys
Step-by-step explanation:
To find how many more girls there are we need to find what one block equals to.
We use this equation to find it.
36 = ( 5 + 7 )x
36 = 12x
3 = x
or
x = 3 (same thing)
So each block represents 3 girls/boys
The girls have 2 more meaning there are 6 more girls than boys.
A scientist wants to measure out .62liters of a liquid, but she can only find a beaker that measures volume in milliliters. How many milliliters should she measure to equal .62liters?
Answer:
620 milliliters
Step-by-step explanation:
1 milliliter= 0.001 liters
0.62L= move the decimal point 3 places to the left
0.62
06.2
062.
0620.
620 milliliters
3.) The ratio of dogs to cats at the animal shelter is 4:1. If there are a total of 85 dogs and cats
at the shelter, how many dogs are at the shelter?
Answer:
Step-by-step explanation:
The ratio of dogs to cats is
quantities relative to each other. There are two cats and one dog. This means there are twice as many cats as dogs, or half as many dogs as cats.
...
Equivalence.
cats : dogs
8 : 4
Answer:
d
Step-by-step explanation:
yes
Find the y intercept and x intercept of the line below.
if you guess what 81 ➗ 918 =
ill give brainiest
Answer:
918 ➗ 81
Step-by-step explanation:
Answer:
It's about 0.088.
Jack is going to make treat bags to hand out on
Halloween. He is going to put a variety of candy in each
bag. To make 4 treat bags he will need 24 candies. How
many candies will he need to make 10 treat bags?
Answer:
60 candies
Step-by-step explanation:
if x is subtracted from 5 and the result is greater than 15. Find the range of values of x
Answer:
x<-10
Step-by-step explanation:
You can write this inequality:
5-x>15
Solving it:
5-x>15
-x>10
x<-10