Given f(x) = 10(3 - 2x), what is the value of f(-9)?
Answer: 210
Step-by-step explanation:
f(x) = 10(3 - 2x)
f(-9) = 10(3 - 2(-9)
f(-9) = 10(3+18)
f(-9) = 10(21)
f(-9) = 210
Please please please help :( Just plz I’m begging; show an equation and explanation to this please T-T
This is my fourth time posting this and no one did so correctly or they just didn’t understand please someone help
Angles B and D are corresponding angles. This means D = B since corresponding angles are congruent when we have parallel lines.
Then note how D+E = 180 as these two angles form a straight angle.
Replace D with B getting B+E = 180 (this is the substitution property).
Alternatively, you can say that G = E and B+G = 180 to lead to B+E = 180. There are many other routes to take as well.
i need help with geometry
hope it helps you and plz mark me brilliantest
Step-by-step explanation:
m<2
The angles of a quadrilateral are in the ratio 1:2:3:4. Find the measure of each angle
Answer:
Let us consider that the smallest angle is 'x'.
According to the given ratio, the four angles are:
x2x3x4xNow, for any quadrilateral, the sum of the all four angles should be equal to 360°.
So,
x + 2x + 3x + 4x = 360°
10x = 360°
x = 36°.
Thus, the four angles are:
x = 36° 2x = 2 × 36 = 72° 3x = 3 × 36 = 108° 4x = 4 × 36 = 144°The inequality of
8+4 times a number is greater than five times the number
Answer:
8+4x>5x x=8
Step-by-step explanation:
i hope this is what you asked for,
100 POINTS! PLEASE HELP WILL MARK BRAINLIEST
Scott is revising for a test that has 20
marks. He thinks the length of time he spends revising
for a test is directly proportional to the number of marks he gets. If he revises for
30 minutes he gets 12 marks. Assuming Scott is correct
How long would he need to revise to get
18
marks?
Answer:
It would take 45 minutes to get 18 marks
Step-by-step explanation:
30 ÷ 12 = 2.5
2.5 x 18 = 45
It would take 45 minutes to get 18 marks
A battery was charged. When the charging began, it was 232323 percent full. After 303030 minutes of charging, the battery was 898989 percent full. How long did it take the battery to be fully charged?
Answer:
1,172 minutes
Step-by-step explanation:
Answer:
35 minutes
Step-by-step explanation:
Let's say that the percentage of the battery's capacity that is charged increases by VVV percent each minute. Then, it increases by V\cdot TV⋅TV, dot, T percent in TTT minutes. In addition, we know that when the charging began, the battery was 232323 percent full.
The percentage of the battery's capacity that was charged at any given time is found by taking the percentage the battery was already charged when the charging began and adding to it the percentage that was additionally charged since then. We can express this with the equation C=23+V\cdot TC=23+V⋅TC, equals, 23, plus, V, dot, T, where:
CCC represents the percentage of the battery's capacity that is charged at a given time
VVV represents the charging rate (in percent per minute)
TTT represents the time (in minutes)
Hint #22 / 4
We know that after 303030 minutes (T=\blue{30})(T=30)left parenthesis, T, equals, start color #6495ed, 30, end color #6495ed, right parenthesis, the battery was 898989 percent full (C=\pink{89})(C=89)left parenthesis, C, equals, start color #ff00af, 89, end color #ff00af, right parenthesis. Let's plug these values into the equation to find the value of VVV.
\qquad \begin{aligned}\pink{89}&=23+V\cdot\blue{30}\\ 30V&=66\\ V&=2.2\end{aligned}
89
30V
V
=23+V⋅30
=66
=2.2
Therefore, the battery was charged at a rate of 2.22.22, point, 2 percent per minute.
Hint #33 / 4
To find how long it took the battery to be fully charged, we can plug C=100C=100C, equals, 100 into the equation and solve for TTT.
\qquad\begin{aligned}100&=23+2.2T\\ 2.2T&=77\\ T&=35\end{aligned}
100
2.2T
T
=23+2.2T
=77
=35
Hint #44 / 4
The battery was charged at a rate of 2.22.22, point, 2 percent per minute.
It took the battery 353535 minutes to be fully charged.
i need the answer to angle B
Plss help if can! Thx
The area of the green square is 9 ft? The area of the red square is 16 ft?
Somebody answer all these correct (only if u really know it)
(WILL MARK AS BRAINLIEST) promise!
Fractions :/
Answer:
hallo, I'm here to answer again!
10) >
11) <
12) <
13) >
14) <
15) >
Evaluate 3p + 5 when p = 6.
a. 14
b. 18
C. 23
d. 41
a
b
С
D
Answer:
C. 23
Step-by-step explanation:
3(6) + 5
18 + 5 = 23
Hope that helps and have a great day!
3 | 5y - 7 | - 6 = 24
Question 4
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A researcher studying koi fish collected data on three variables, A, B, and C. The following residual plots show the residual for a model for predicting each variable from the age of the fish
Answer:
Plot for Variable C Only
Step-by-step explanation:
Trust me, unless your teacher switched the order of the charts in which case it's the linear one!
The residual plot is a form of scatter plot that shows the difference between the observed value and the actual value.
The plot that supports a linear model is plot A.
The complete question requests that we select all plots that can be used as a linear model.
For a residual plot to be used as a linear model, the pattern of the residual plot must be at random (i.e. it must not show any obvious pattern)
From the given plots (see attachment), we have the following observation.
Plot A shows no patternPlot B shows a curve (like a quadratic function)Plot C shows a linear patternHence, only plot A can be used as a linear model.
Read more about residual plots at:
brainly.com/question/2876516
The diameter of a human red blood cell is 0.000009 m. The diameter of a cold virus is 0.00000003 m Approximately how many times as large is the diameter of a red blood cell as the diameter of a cold virus? A :3⋅10^-14 B:3⋅10 ^−2 C :3⋅10 ^1 D ;3⋅10 ^2
Answer:
D. 3*10^2
Step-by-step explanation:
Given the diameter of human red blood cell = 0.000009 m
diameter of a cold virus = 0.00000003 m
To know how many times as large is the diameter of a red blood cell as the diameter of a cold virus, we will take the ratio of the diameter of human red blood cell to that of a cold virus as shown;
diameter of human red blood cell/diameter of a cold virus = 0.000009 m/0.00000003 m
= 9*10^-6/3*10^-8
= 9/3 * 10^-6-(-8)
= 3 * 10^(-6+8)
= 3*10^2
Hence the diameter of a red blood cell is 3*10^2 larger than that of the cold virus
Answer:
D. 3*10^2
Step-by-step explanation:
khan acadamy
What is the slope of the line represented by the equation y =-7/2x+1/4?
Answer:
-7/2
Step-by-step explanation:
It's kinda hard to explain... just take the answer lol
When Charlotte left her house this morning, her cell phone was 30% charged and it
then started to lose 2.5% charge for each hour thereafter. Write an equation for B, in
terms of t, representing the charge remaining in Charlotte's battery, as a percentage,
t hours after Charlotte left her house.
Answer B=
Answer: -2.5t+30
Step-by-step explanation:
I just did it
hElp again for the last time if i dont get it wrong ;-;
Answer:
45%
Step-by-step explanation:
45 out of 100 blocks are shaded.
<3
PLS HELP:( !! What is an equation of the line
that is perpendicular to the line
y= -2/3x-1 and passes through
the point (-4, 2)?
Answer:
[tex]y = \frac{3}{2} x + 8[/tex]
Step-by-step explanation:
The given equation is written in the form of y=mx+c (where m is the gradient and c is the y-intercept).
Thus, gradient of given equation= -⅔
The products of the gradient of perpendicular lines is -1.
(Gradient of line)(-⅔)= -1
Gradient of line
[tex] = - 1 \div ( - \frac{2}{3} ) \\ = \frac{3}{2} [/tex]
Hence, m= [tex] \frac{3}{2} [/tex].
Subst. m= [tex] \frac{3}{2} [/tex]into the equation:
[tex]y = \frac{3}{2} x + c[/tex]
To find the value of c, substitute a pair of coordinates into the equation:
When x= -4, y= 2,
[tex]2 = \frac{3}{2} ( - 4) + c \\ 2 = - 6 + c \\ c = 2 + 6 \\ c = 8[/tex]
Thus, the equation of the line is [tex]y = \frac{3}{2} x + 8[/tex].
What two things must DNA be able to do?
DNA contains the instructions needed for an organism to develop, survive and reproduce. To carry out these functions, DNA sequences must be converted into messages that can be used to produce proteins, which are the complex molecules that do most of the work in our bodies. Hope this helps!
Convert: 27 mm = _______ m
A. 270
B. 0.027
C. 2.7
D. 0.0027
Answer:
B. 0.027
Step-by-step explanation:
hdhdbebbendn
Answer:
B. 0.027
Step-by-step explanation:
Divide the mm value by 1000 (since it is a thousanth of a meter) and you get your answer
what is the square footage of a ploygon that is 120 x 100?
Answer:
12000
Step-by-step explanation:
Which expression will have the same value as 3(4 x + 9) ‒ 6 x for all values of x?
A. x + 12
B. x + 27
C. 6 x + 12
D. 6 x + 27
Which point can best be represent square root 68
Answer:
C
Step-by-step explanation:
because when converted to decimal its roughly 8.2. which is more than eight, yes, but 8 is the closest thing to 8.2
$130.00 coat; 20% discount
Find the total cost to the nearest cent.
Answer:
26
Step-by-step explanation:
130 times 20% is 26
You could also do it like 130 times 0.20 and still get 26
What is the domain of the function y = 3 x -4 when the range is {–7, 2, 8, 14}?
Answer:
37
Step-by-step explanation:
(Brainlest) (Points) Your friend is trying to make an equivalent ratio to 5/10. Please explain to your friend how they can make an equivalent ratio to 5/10.
( E X P L A I N )
Answer:
Multiply both parts of the ratio by any number.It'll always be equivalent.Hope this helps!
Answer:
Because it is like a fraction 5/10 would mean 5 so hope that helped
Step-by-step explanation:
Which of the following statements are true?
Choose all answers that apply:
Based on the equation of the line, the true statements are:
The slope of the line is 2.5.A change of 2 units in x results in a change of 5 units in y.Why are these true?The formula of the line from the original question is y = 2.5x.
The equation of a line is given as:
y = mx + c
M in the above equation is the slope of the line. In the above line, the format is:
y = 2.5x
Even though c is not present, m is present as 2.5 which makes it the slope of the line.
A change in 2 units in x would be:
= 2 x 2.5
= 5 units in y
Find out more on the equation for a straight line at https://brainly.com/question/17130521.
a) y=-3, slope is zero
b)x= -3, slope is zero
c) y=-3, slope is undefined
d)x= -3, slope is undefined
There’s one more to this
Answer:
C
Step-by-step explanation:
i am a master at slope questions :)