Answer:
a
Step-by-step explanation:
What is the value of -2(x + 5)?
Answer:
Step-by-step explanation:
Here you go mate
Step 1
-2(x+5) Equation
Step 2
-2(x+5) Solve
-2(x)+-2(5)
Step 3
-2(x)+-2(5) Add them together
answer
-2x-10
Hope this helps
The population of a town was 25000 in the 2000 census and and 30000 in 2010 census. By what percent did the population increase
Answer: This means that the population increased a 20% between the year 2000 and the year 2010.
Step-by-step explanation:
In this case, we have that 25,000 is the 100%.
Now we want to know which percentage represents 30,000
Let's suppose that the percentage is X.
Then we can have a system of equations:
30,000 = X
25,000 = 100%
To find the value of X, we can take the quotient of these two equations:
30,000/25,000 = X/100%
(30,00/25,000)*100% = X = 120%
Then in the 2000 we had a 100%, and in the 2010 there was a 120%.
The difference is:
120% - 100% = 20%
This means that the population increased a 20% between the year 2000 and the year 2010.
If x is a whole number which value for x will make 7 < 3x < 9 a true statement
a. 8
b. 2
c. 0
d. 1
e. none of the above
Two cars leave the same parking lot, with one heading north and the other heading east. After several minutes, the eastbound car has traveled 2 kilometers. If the two cars are now a straight-line distance of 4 kilometers apart, how far has the northbound car traveled? (use){Pythagorean theorem}[tex]a^{2} +b^{2} =c^{2}[/tex]
Answer:
Step-by-step explanation:
G
Answer:
[tex]\sqrt{12}[/tex]
Step-by-step explanation:
[tex]\sqrt{4^2-2^2} =\sqrt{12}[/tex]
Hence, the answer is [tex]\sqrt{12}[/tex].
Please mark as Brainliest!
Please help me with this question for brainliest.
Answer:
1)
proportional relationship )
2)unit rate
3)constant of proportionality
Step-by-step explanation:
[Function Composition] could someone help me with this answers or show work either is fine
Answer:
The required answer is 100 .
Step-by-step explanation:
Given function to us is ,
⇒ f(n) = 4n + 2 . And we need to find (f • f) (-3)
So , first let's find f•f , which will be ,
⇒ (f • f) = (4n + 2)(4n + 2)
⇒ (f • f) = 4n ( 4n + 2 ) +2 ( 4n + 2)
⇒ (f • f) = 16n² + 8n + 8n + 4
⇒ (f • f) = 16n² + 16n + 4
====================================
Now we need to find (f • f)(-3) . So on substituting f = (-3) , we have :-
⇒ (f • f)(n) = 16n² + 16n + 4
⇒ (f • f)(-3) = 16*(-3)² + 16*(-3) + 4
⇒ (f • f) (-3) = 16* 9 - 48 + 4
⇒ (f • f)(-3) = 144 - 44
⇒ ( f • f) (-3) = 100
Hence the value of ( f • f)(-3) is 100 .Math help please 2
Will give brainest
Answer: The answer is the second option
Step-by-step explanation:
Divide each term by 4 and simplify x>8
Help plssssss this is due today! This composite figure is made up of three simpler shapes. What is the area of the figure?
Answer:
D 55 sqaure cm
Step-by-step explanation:
Solve for the value of the variable: 7x+ 10 = 4x + 16
Enter the answer
Step-by-step explanation:
7x + 10 = 4x + 16
3x + 10 = 16 (subtract 4x on both sides)
3x = 6 (subtract 10 on both sides)
x = 2 (divide 3 on both sides)
Lexi say that -68 feet is a greater depth than- 75 feet, since-68>-75. Is Lexi correct? Explain
Answer:
No
Step-by-step explanation:
When working with negative numbers in terms of depth, greater depth are depicted by values as we move farther to the left of the number line.
With this in mind, - 75 feets is farther to the left of the number line and as such represents a greater depth value Than - 68 feets
Therefore, when expressing depth or elevation distances, the values should be iewwd in absolute terms. Then |75| > |68|. While bearing in mind that depth is downward and thus negative
determine the function represented by the table is linear. Explain.
x: -12, -2, 6, 18
y: -3, -8, -11, -17
Answer:
i needs the points foo
Step-by-step explanation:
How does changing the slope effect the parent function? How does changing the y-intercept effect the parent function?
Answer/Explanation:
When you change the slope, it will affect the steepness of the graph/line.
When you change the y-intercept (b) it will affect where the graph crosses the y axis.
-increasing the y-intercept will make the graph move up and
decreasing will make the y-intercept go down.
What's the y intercept
Answer:
3
Step-by-step explanation:
it intercepts the y axis at 3
Answer:
3 2
Step-by-step explanation:
I just know
Kadeem is making two drawings of an oak leaf. The dimensions of the first drawing will be 1/3 the dimensions of the leaf. The dimensions of the second drawing will be 2 1/2 the dimensions of the leaf. If the oak leaf is 5 1/2 inches, will the length of each drawing be equal to, greater then, or less than 5 1/2 inches?
Answer: See explanation
Step-by-step explanation:
The dimensions of the first drawing will be 1/3 the dimensions of the leaf and the dimension of the oak leaf is 5 1/2 inches. Therefore, the dimensions of the 1st leaf:
= 1/3 × 5 1/2
= 1/3 × 11/2
= 11/6
= 1 5/6 inches
This is less than 5 1/2 inches
The dimensions of the second drawing will be 2 1/2 the dimensions of the leaf. This will be:
= 2 1/2 × 5 1/2
= 5/2 × 11/2
= 55/4
= 13 3/4 inches
Thus is greater than 5 1/2 inches
What is the total cost of a $95.00 item with a sales tax of 6%
Answer: $100.70
Step-by-step explanation: 6% is equal to 0.06, so you can add multiply the price of the item by 1.06 because that is the base cost plus the tax. Then you get $100.70.
Answer:
100.70
Step-by-step explanation:
95.00*6%
95.00*.06=5.70
95.00+5.70=100.70
pLZZZZZ heLp me AN swer this questin!!!!!
1+1x2+3=
PLZZZZZ
Answer:
6
Step-by-step explanation:
Pls mark brainliest.
Help Please
An absolute value function with a vertex of (4,14) is negative on the interval (−∞,−2). On what other interval is the function negative?
(10,∞)
(14,∞)
(−2, 2)
(9,∞)
Answer:
Its (10,∞)
Step-by-step explanation:
Trust me I just took the exam and got it correct
on the planet Jupiter, a ball this thrown upward at a velocity at 10m/s. It's height, h(t) meters after t seconds is given by the equation h(t)=-12.5(t-0.4)^2+4.
a) what is the maximum height the ball reaches?
b) what was the height of the ball when it was released from the throwers hand?
c) how many seconds after the ball was hit and did it land on the surface of Jupiter to the nearest second?
Answer:
a) The maximum height that the ball reaches is 4 meters.
b) The height of the ball when it is released from thrower's hand is 2 meters.
c) The ball will take approximately 0.966 seconds to hit the surface of Jupiter.
Step-by-step explanation:
a) Let [tex]h(t) = -12.5\cdot (t-0.4)^{2}+4[/tex], where [tex]t[/tex] and [tex]h(t)[/tex] are the time and height, measured in seconds and meters. Since this equation is in vertex form, the maximum height corresponds to the value associated with the dependent variable (height). That is:
[tex]h(t) -4 = -12.5\cdot (t-0.4)^{2}[/tex]
Hence, the maximum height that the ball reaches is 4 meters.
b) The height of the ball when the ball is released from thrower's hand is the height of the ball at [tex]t = 0\,s[/tex]. Then, we evaluate the function:
[tex]h(0) = -12.5\cdot (0-0.4)^{2}+4[/tex]
[tex]h(0) = 2\,m[/tex]
The height of the ball when it is released from thrower's hand is 2 meters.
c) The instants when the ball hits the ground are those instants [tex]t[/tex] so that [tex]h(t) = 0[/tex]. Then:
[tex]-12.5\cdot (t-0.4)^{2}+4 = 0[/tex]
[tex]-12.5\cdot (t^{2}-0.8\cdot t +0.16)+4 = 0[/tex]
[tex]-12.5\cdot t^{2}+10\cdot t +2 = 0[/tex]
By the Quadratic Formula we obtain the following roots:
[tex]t_{1} \approx 0.966\,s[/tex], [tex]t_{2}\approx -0.166\,s[/tex]
Only the first root is physically reasonable, since time is a positive real variable.
The ball will take approximately 0.966 seconds to hit the surface of Jupiter.
There are
windows for every 3penguins.
There are
windows for every 11 penguin.
in the first 18 and the second 6
Barry bought 212 pounds of lunch meat.
He ate 110 of the lunch meat when he got home.
Which equation shows how many pounds of lunch meat he ate?
CLEAR CHECK
212⋅110=14
212⋅110=2120
212÷110=25
212÷110=320
Answer:
barry is a fata-ss
212-110= 102 lbs of meat left over
Barry ate 110 lbs
Please help with these..... due tonight will give brainiest
Answer:
yes and no :)
I need help someone please help me
Answer: That's easy but you have to offer more points
Classify the following as a monomial, binomial, or trinomial: 4x - 10xy
Answer:
hey
Step-by-step explanation:
Elena got on 25 of her mom's nerves. Later, she gets on 7 more. How many nerves of her mother did Elena trigger?
Answer:
the last one lol- thats just how it works
At a bake sale, a total of 80 cookies were sold. If the ratio of chocolate chip cookies sold to oatmeal cookies sold was 9 : 1, how many chocolate chip cookies were sold?
Answer:
7,1
Step-by-step explanation:
80 divided by 9 times 8 i think
HELP QUICK PLSS
The shadow of the tree is 40 feet long. A yard-stick placed next to the tree casts a 6 foot shadow. How tall is the tree?
Answer:
pretty sure the tree's 20 feet
According to proportion if a tree casts a shadow of 40 feet it;s height is 20 feet.
What are ratio and proportion?A ratio is a comparison between two similar quantities in simplest form.
Proportions are of two types one is the direct proportion in which if one quantity is increased by a constant k the other quantity will also be increased by the same constant k and vice versa.
In the case of inverse proportion if one quantity is increased by a constant k the quantity will decrease by the same constant k and vice versa.
We know 1 yard is 3 feet.
Given, The shadow of the tree is 40 feet long. A yardstick placed next to the tree casts a 6-foot shadow and assuming the height of the tree to be x.
∴ x : 40 : : 3 : 6.
x/40 = 3/6.
6x = 120.
x = 20 feet.
learn more about proportion here :
https://brainly.com/question/7096655
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5. Use the angle addition formula to find the expression for cos (a+b).
Answer:
Step-by-step explanation:
Trigonometric identities are used to show the equality of expressions involving trigonometric functions. These trigonometric functions are the sine, the cosine, and the tangent as well as their respective reciprocals which are cosecant, the secant, and the cotangent,
Some trigonometric identities are:
tanθ = sinθ / cosθ; secθ = 1 / cosθ; cosecθ = 1 / sinθ; cotθ = 1 / tanθ = cosθ / sinθ
The angle addition formula for cos is given as:
cos(α + β) = cosαcosβ - sinαsinβ
Therefore:
cos(a + b) = cosacosb - sinasinb
PLEASE HELP!!-What two rotations would provide the following images.
Which function is nonlinear?
mark as brilliant! help
Answer:
I believe the answer is C. Please let me know if I am wrong
Step-by-step explanation:
What is the solution to the trigonometric inequality 2sin(x)+3> sin^2(x)
Answer:
[tex]-\frac{\pi}{2}+2n\pi<x<\frac{3\pi}{2}+2n\pi[/tex]
Step-by-step explanation:
Given:
[tex]2\sin(x)+3> \sin^2(x)[/tex]
To Find:
The Solution of the above inequality
Explanation:
[tex]2\sin(x)+3> \sin^2(x).......(i)\\\text{let} \sin (x) = u\\\Rightarrow 2u+3> u^2\\\Rightarrow u^2-2u-3<0\\\Rightarrow u^2-3u+u-3<0\\\Rightarrow u(u-3)+1(u-3)<0\\\Rightarrow (u+1)(u-3)<0\\\Rightarrow -1<u<3\\\text{and since} \sin(x) = u\\\Rightarrow -1<\sin(x)<3[/tex]
[tex]\text{as if} \;a<u<b \Rightarrow a<u \;\text{and}\; u<b\\\Rightarrow -1<\sin(x) \; \text{and} \; \sin(x) <3\\-1<\sin(x) \; : -\frac{\pi}{2}+2n\pi<x<\frac{3\pi}{2}+2n\pi\\\text{and}\; \sin(x) <3 : \text{true for all } x \in R\\\text{Now, combining the intervals we get}\\-\frac{\pi}{2}+2n\pi<x<\frac{3\pi}{2}+2n\pi \; \text{and} \; \text{true for all } x \in R\\-\frac{\pi}{2}+2n\pi<x<\frac{3\pi}{2}+2n\pi.[/tex]