Steps to solve:
f(x) = 2x + 1
~Substitute
f(9) = 2(9) + 1
~Multiply
f(9) = 18 + 1
~Add
f(9) = 19
Best of Luck!
Answer:
19
Step-by-step explanation:
substitute 9 in x and you get 18 then add 1 so total u get 19
Hope that helps :)
5) Adam bought 5 DVDs that cost $12.95
each. How much did Adam spend
before taxes?
Answer:
$64.75
Step-by-step explanation:
You can add $12.95 five times:
$12.95 +12.95 +12.95 +12.95 +12.95 = spending
but it is probably easier to use multiplication:
5 × $12.95 = spending = $64.75
Adam spent $64.75.
Answer:
64.75
Step-by-step explanation:
So you have 5 DVDs bought and 12.95 for each.
12.95 x 5
12.95 + 12.95 = 25.90
25.90 + 12.95 = 38.85
38.85 + 12.95 = 51.80
51.80 + 12.95 = 64.75
So your answer is $64.75
Can someone answer fast.plsss
Answer:
a
Step-by-step explanation:
sec (thita) = squrt (5)
squaring on both sides:
sec^2 (thita) = 5 - equation 1
1 + tan^2 (thita) = 5
tan^2 (thita) = 4
tan (thita) = 2.
= tan (thita) - squrt(5)sin(thita)
= 2 - squrt(5) x 2/ squrt(5)
= 0
from eqn - 1
sec(thita) = squrt(5)
cos(thita) = 1/ squrt(5)
sin(thita) = squrt ( 1- 1/(squrt (5))^2)
sin(thita) = 2/ squrt(5) .
1
3
1
miles in
20
hour. What
Park rangers at a game preserve in Africa observed a cheetah run 3
was the cheetah's speed in miles per hour (mph)?
9
A. mph
50
5
B. 5 mph
9
C. 72 mph
O D. 92 mph
Anyone? Know how to do this
Answer:1=£34.2
2=£66.6
3=£9.18
4=£13,158
Step-by-step explanation:
We are decreasing the prices by 10%
1.£38
£38 = 100%
? =90%
90×38÷100=£34.2
2.£74
£74=100%
? = 90%
90×74÷100=£66.6
We are increasing the the salaries by 2%
1.£9
£9=100%
? =102
102×9÷100=£9.18
2.£12900
£12900=100%
? =102%
102×12900÷100=£13,158
F(x)=-2x^2 -5x+1
H(x)=3(x+3)^2-11
H(f(-1))=?
A.132
B. 136
C.140
D.144
Answer:
B
Step-by-step explanation:
So we have the two functions:
[tex]f(x)=-2x^2-5x+1\text{ and } h(x)=3(x+3)^2-11[/tex]
And we want to find:
[tex]h(f(-1))[/tex]
So, find f(-1) first. Substitute -1 into f(x):
[tex]f(-1)=-2(-1)^2-5(-1)+1[/tex]
Square:
[tex]f(-1)=-2(1)-5(-1)+1[/tex]
Multiply:
[tex]f(-1)=-2+5+1[/tex]
Add:
[tex]f(-1)=4[/tex]
Now, substitute this into h(f(-1)):
[tex]h(f(-1))=h(4)[/tex]
So, substitute 4 into h(x):
[tex]h(4)=3(4+3)^2-11[/tex]
Add:
[tex]h(4)=3(7)^2-11[/tex]
Square:
[tex]h(4)=3(49)-11[/tex]
Multiply:
[tex]h(4)=147-11[/tex]
Subtract:
[tex]h(4)=136[/tex]
So, our answer is B.
And we're done!
A building casts a shadow 47 feet long. At the same time, a 38‐foot‐tall flagpole casts a shadow 9.4 feet long. What is the height of the building?
Answer: the answer would be 75.6 i think, sorry if that's wrong
Step-by-step explanation:
38-9.4=28.6
28.6+47=75.6
Fourteen decreased by twice a number equals -32. Write an equation for this equation and then find the number
Answer:
-32=2x-14
Step-by-step explanation:
-32=2x-14
-18=2x
-9=x
Answer:
2x-14 =-32
Step-by-step explanation:
Sort the objects according to their densities. Which will float? Which will sink?
Remember, water has a density of 1 gram per cubic centimeter.
Clay: 54 g/45 cm
Float in Water (density < 1 g/cm)
Sink in Water (density > 1 g/cm”)
Brick 38 g/20 cm
Oak wood: 56 g/80 cm
Wheat 24 g/30 cm
Butter: 8.7 g/10 cm
Answer:
Float in Water:
Wheat
Butter
Oak wood
Sink in Water:
Brick
Clay
Step-by-step explanation:
No idea honestly, but make sense also do not mind my user. Brainly was being annoying by ADs and keep putting them in my face.
i'm over this please
Answer:my answer is oooof
Step-by-step explanation:
x=127
since a triangle equals 180, subtract 180-37-90 to get the bottom angle of 53. that straight line is also 180 so 180-53=127
It cost Jocelyn $5.60 to send 56 text messages. How much would it cost to send 198
*text messages?
Answer:
$19.8
Step-by-step explanation:
To find the answer, find the ratio.
Answer: 1980
Step-by-step explanation:
Set yp a proportion
5.60dollars=56texts
---------------- ----------
198dollars= x
Then you cross multiply the 198 with the 56
then you divide the 5.60
Calculate the speed of a train traveled 400miles in 5 hours
Answer:
80 miles per an hour
Step-by-step explanation:
400 divided by 5 equals= 80 so 80miles = 1 hour
Answer:
80 miles per hour.
Step-by-step explanation:
Start with the speed formula.
[tex]speed=\frac{distance}{time}[/tex]
In this scenario, the distance is [tex]400[/tex] miles, and the time is [tex]5[/tex] hours.
Substitute:
[tex]speed=\frac{400}{5}[/tex]
Divide.
[tex]400[/tex] ÷ [tex]5[/tex]
Solve:
[tex]400[/tex] ÷ [tex]5=80[/tex]
Help plzzzzzzzzzzzzzzzzzz
Answer:
109
Step-by-step explanation:
To solve you must work backward, she has 8 jars of 13 pieces so first do
8*13=104, she currently has 104 pieces. Then add back the five she ate and you get 109
Answer:
109
Step-by-step explanation:
If Anita split the candy into 8 jars, each jar containing 13 pieces of candy, you need to multiply 8 x 13 to get the amount of candy she had after eating the 5 pieces. 8 x 13 is 104. Then, you need to add the 5 pieces of candy she ate before splitting the candy into jars, meaning you must add 5 to 104. 5 + 104 = 109.
Solve for M
D=m/v
Show your work
Answer: m=vD
Step-by-step explanation:
To get m alone, you want to use algebraic properties.
[tex]D=\frac{m}{v}[/tex] [multiply both sides by v]
[tex]m=vD[/tex]
Now that we have mass alone, we know that m=vD.
A rectangular prism and its dimensions are shown in the diagram.
Dimensions:length 7.5 width 5 height 6.5
Answer:
Surface Area =237.5
Answer:237.5
Step-by-step explanation:
Pleaseeeeeee Help meee :(((((
(30 points)
Answer:
9
Step-by-step explanation:
d=rt
12x45/60
12x0.75
9=d
Answer:
Step-by-step explanation:
when f(n)=-8 what is the value of n?
Answer:
20 the answer is 20 because you plug in 4 for n.
Someone please help and let it be the right answer I'm failing math
Answer:
Step-by-step explanation: the triangle is negative 6, plus 18 half in the middle.
What is the 4th term in the sequence?
a(n) = -1/16(2)n−1
Answer:
To find the 1st term, put n = 1 into the formula, to find the 4th term, replace the n's by 4's: 4th term = 2 × 4 = 8. Example.
Step-by-step explanation:
Hope this helps
Does this graph represent a function? What is the domain and range of the graph?
Yes; domain: all real numbers; range: y = 0
Yes; domain: all real numbers; range: y 2 0
No; domain: all whole numbers; range: y SO
Yes; domain: all real numbers; range: y > 0
Answer:
Yes; domain: all real numbers; range: y [tex]\geq[/tex] 0
Step-by-step explanation:
1. Use the vertical line test to see if it is a function.
2. Figure out what the lowest and highest point x can be. In this case x can be any number
3. Figure out what the lowest and highest point of y can be. In this case y is not negative, the lowest it can be is 0. So y [tex]\geq[/tex] 0
*Note: Domain are the x values & Range are the y values
Yes; domain: all real numbers; range: y ≥ 0. Therefore, option B is the correct answer.
From the given graph we need to check whether it is a function.
What is the domain and range?The domain and range are defined for a relation and they are the sets of all the x-coordinates and all the y-coordinates of ordered pairs respectively.
For example, if the relation is, R = {(1, 2), (2, 2), (3, 3), (4, 3)}, then:
Domain = the set of all x-coordinates = {1, 2, 3, 4}
Range = the set of all y-coordinates = {2, 3}
From the graph we can see all the y values are equal and greater than y.
That is, y ≥ 0
Yes; domain: all real numbers; range: y ≥ 0. Therefore, option B is the correct answer.
To learn more about the domain and range of the function visit:
https://brainly.com/question/17440903.
#SPJ5
1. What is the solution for 2x-5=7
O x = 6
O x = -6
X = 12
O x = 9
Given, equation in the question which we have to solve is
[tex]2x - 5 = 7[/tex]
Here, we need to find x. So, Let's isolate x on one side of the equation. It is present in the left hand side. Add 5 to both sides,
[tex]2x - 5 + 5 = 7 + 5[/tex]
[tex]2x = 12[/tex]
Divide 2 from both sides,
[tex] \frac{2x}{2} = \frac{12}{2} [/tex]
[tex]x = 6[/tex]
So, the correct option is A.
━━━━━━━━━━━━━━━━━━━━
help me pls math is so confusing
A. 28
B. 24
C. 20
D. 18
E. 16
Answer: A
Step-by-step explanation:
A.)4
B.)10
C.)18
Which one could be the answer I’m lost.
f(x) = ((x^2) / 3) + x, for f(6)
f(6) = ((6^2) / 3) + 6
Square 6
f(6) = (36 / 3) + 6
Divide 36 by 3
f(6) = 12 + 6
Combine like terms
f(6) = 18
This is trigonometry!
I need help with what it means when it says “adjacent for 20 degrees” , “hypotenuse for 20 degrees” etc. ! Thanks
Answer:
Adjacent for 20° = 17.3mm
Hypotenuse for 70° = 120mm?
Opposite for 70° = 17.3mm
Hypotenuse for 20° = 120mm?
Adjacent for 70° = 10mm
Opposite for 20° = 10mm
Step-by-step explanation:
I think "Adjacent for 20°" is asking the length of the side adjacent to 20° (Although the Hypotenuse is adjacent to 20° don't answer its length because Hypotenuse are ALWAYS opposite to the 90° of a right triangle). The "Opposite for 70°" is asking the length of side opposite to 70°.
Also, I really don't know why the hypotenuse is 120mm because by the Pythagorean Theorem, it should 19.98mm (20mm if rounded to the nearest tenths).
Answer:
"adjacent" is the short ray that makes up the angle. "opposite" is the side not touching the angle.
Step-by-step explanation:
Since your question text involves identifying adjacent and opposite, that's what we'll explain.
In a right triangle, the hypotenuse is the side opposite the right angle. For the purposes here, it is always referred to as the hypotenuse. It is the longest side in the right triangle.
__
Each acute angle in the right triangle has the hypotenuse on one side. The other side forming the angle is called the adjacent side.
The remaining side of the triangle (not the hypotenuse, and not the adjacent side) is the one opposite the angle. It is called the opposite side.
__
In the first attachment is a triangle with sides and angles labeled. Each angle is labeled with an upper-case letter (A, B, C), and each side opposite that angle is labeled with the corresponding lower-case letter (a, b, c). This is a customary way to label triangle sides and angles. (The right angle is not always C.)
So, for angle A, the hypotenuse is c, and the adjacent side is b. The side opposite is a.
For angle B, the hypotenuse is c (still), and the adjacent side is a. The side opposite is b.
__
The second attachment applies these ideas to your first (upper left) triangle.
__
As for the applicable formulas, the mnemonic SOH CAH TOA is often helpful. It is intended to remind you that ...
Sin = Opposite/Hypotenuse
Cos = Adjacent/Hypotenuse
Tan = Opposite/Adjacent
Then the applicable formulas clockwise from left are for Cos, Sin, Cos.
"What went wrong" in the 30° triangle is that somebody used a calculator in radians mode, not degrees mode, when they tried to compute the sine. A couple of errors were made, because sin(30 radians) is about -0.988, so the minus sign was dropped, too. (You always need to check that the calculator is in the right mode.)
(-5)+(+7)=( ____) ???
Answer: 2
Step-by-step explanation:
Aline passes through (2, -1) with slope 3.
What is the equation of the line in slope-intercept form?
x + 12y = 156
4x + 6y = 62
What is the cost of each jersey?
Nicole lives in a home worth $135000. She has a mortgage of $88000. She owes $42000 on her car that is worth $11000. She has a credit card balance of $28000. She also has a checking account with a balance of $900 and $300 in gift cards. What is Nicole's net worth?
Answer:
305,200
Step-by-step explanation:
HELP ME PLS THANK YOU<<<3333
≈ 63.30 ft²
Step-by-step explanation:Heron formula
A = √p(p - a)(p - b)(p - c)
a = 9 ; b = 15 ; c = 20
p = (a + b + c)/2 = (9 + 15 + 20)/2 = 44/2 = 22
A = √22(22-9)(22-15)(22-20)
= √22×13×7×2
= √4004
≈ 63,27
≈ 63.30 ft²
How do you solve this kind of equation? 9(x+2) > 9(x-3)
Step-by-step explanation:
okay so that's an inequality. You solve it the same way you saw the regular equation. the only difference is that if you divide or multiply by a negative number then you have to turn the sign around.
Answer:
0>-45
True for all x
Step-by-step explanation:
[tex]9(x+2) > 9(x-3)\\\\\mathrm{Expand\:}9\left(x+2\right):\quad 9x+18\\\\\mathrm{Expand\:}9\left(x-3\right):\quad 9x-27\\9x+18>9x-27\\\\\mathrm{Subtract\:}18\mathrm{\:from\:both\:sides}\\\\9x+18-18>9x-27-18\\\\Simplify\\\\9x>9x-45\\0>-45[/tex]