Answers
Answer:
18 C
19 A
20 C
I am not sure about 16 and 17
Hope it helps
Answer:
Step-by-step explanation:
16) B
17) A
18) C
19) f(X ) = -2x² + 5
f(-3) =-2*(-3)² + 5 = -2*9 + 5 = -18 + 5 = -13
Ans: A
19)f(x) = - x² - 1
f(-5) = -(-5)² - 1 = -25 - 1 = -16
Ans: C
Related Questions
what are all solutions to m•m•m=729
Answers
There's only one answer that's completely "real" ... the kind of numbers you work with every day.
That answer is:. m = 9 .
What is the first 100 diget of pi?
Answers
Which equation represents this sentence?
4 times the difference of 10 and a number is equal to 28
o
-
-
4(y – 10) = 28
• 4 (10 - y) = 28
10 – 4y = 28
- 4y - 10 = 28
Answers
Answer:
2nd choice
Step-by-step explanation:
4(10-number)=28
4(10-y)=28
The second equation, 4(10 - y) = 28, represents the given sentence.
What is an equation?Two or more expressions with an equal sign are defined as an equation.
The given sentence is "4 times the difference of 10 and a number is equal to 28".
Let the unknown number be y, then the sentence can be written as:
4(10 - y) = 28
Hence, the second equation, 4(10 - y) = 28, represents the given sentence.
Learn more about equations here:
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Can someone help me out?
Answers
Answer:
I think the answer might be 58 sorry if i'm wrong
Step-by-step explanation:
Select the expression that represents the additive inverse of -12/5.
A. 12/5
B. 5/12
C. -5/12
D. -12/5
Answers
PLEASE PLEASE HELP PLEASE PLEASE HELP ME PLEASE PLEASE HELP PLEASE PLEASE HELP ME PLEASE PLEASE HELP PLEASE PLEASE HELP ME PLEASE PLEASE HELP PLEASE PLEASE HELP ME PLEASE PLEASE
Answers
Answer:
1. x = 3
2. x = 2 and x= 4
3. y = -8
4. Downward
5. (3,1)
Step-by-step explanation:
Y-intercept: y value at which the value of x=0
X-intercept: x value at which the value of y=0
Vertex: point of change that includes the highest possible value of y (notatable by (x,y))
Downward extension
A plane flies 15 miles in 20 seconds. How long would it take the plane to cover 30 miles?
Answers
Answer:it would take the plane 40 seconds
Step-by-step explanation:
if you multiply by two then you would be able to get 30
like 15 times 2 and since it’s 15 miles to 20 seconds or 15:20 you would have to multiply by the same number.
If you answer this you'll get 50 points but it has to be correct.
Answers
Answer:
you answer this you'll get 50 points but it has to be correct
If 3sin ⁻¹ (2x/1+x²)-4cos⁻¹(1–x²/1+x²)+2tan⁻¹(2x/1–x²)=π/3. Then, x=.
a 1/√3 b1/√2 c 2 d 1
Answers
Answer:
Option A.)
The answer is 1/√3
Step-by-step explanation:
3sin⁻¹ (2x/1 + x²) - 4cos⁻¹ (1 - x²/1 + x²) + 2tan⁻¹ (2x/1 - x²) = π/3
Put x = tanθ
3sin⁻¹ (2tanθ/1 + tan2θ) - 4cos⁻¹ (1 - tan2θ/1 + tan2θ) + 2tan⁻¹ (2tanθ/1 - tan2θ) = π/3
3sin⁻¹ (sin2θ) - 4cos⁻¹ (cos2θ) + 2tan⁻¹ (tan2θ) = π/3
3.2θ - 4.2θ + 2.2θ = π/3
⇒ 2θ = π/3
⇒ θ = π/6
∴ tan-1x = π/6 ⇒ x = tan (π/6) = 1/√3
Thus, The answer is 1/√3
-TheUnknownScientist 72
find the square root of -25
Answers
Answer:
5
Step-by-step explanation:
Answer:
5i
(i represents that the number is "imaginary", because you can't actually have a negative root.)
Step-by-step explanation:
Hope this helps :)
A point is plotted on a number line at 3.7. A second point is plotted at -5.5. What is the length of the line segment joining these points? Enter your answer as a decimal in the box.
Answers
Answer:ññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññññ
Find the percent decrease. Round to the nearest percent.
From 90°F to 55°F
Answers
Answer:
39% decrease
Step-by-step explanation:
To find the decrease, subtract 55 from 90
90 - 55 = 35
Divide 35 by the original temperature -
35/90 = 0.388
Multiply 0.388 by 100 to find the percent -
38.8%
Round to the nearest percent -
39%
Find the
slope of the line
graphed below.
Answers
Answer:
2/5 sorry if im wrong:")
Step-by-step explanation:
you want to measure the volume of the vase which has an unusual shape in that it was crafted unigualyby a master bower and there is thus no mathematical formula that you can use how would you go abouy this
Answers
Find the slope of the line passing through the points (-4,7) and (2,-9)
Answers
Answer: The slope is -8/3
Step-by-step explanation: Use the slope formula y2-y1/x2-x1
so -9-7/2-(-4) = -16/6 which can be divided by 2 to get -8/3
Find the slope of the line using the graph. Write an equation of the line using the graph.
Answers
Answer:
slope: -3equation: y = -3x +5Step-by-step explanation:
The slope formula can be used with the marked points.
m = (y2 -y1)/(x2 -x1)
m = (-1 -2)/(2 -1) = -3/1 = -3
The graph apparently intersects the y-axis at y=5, so the slope-intercept equation is ...
y = mx +b . . . . . . . line with slope m and y-intercept b
y = -3x +5
A family of 6 members that is made up of Papa, Mama and their 4 children go to the stadium to watch the Peru playoff game. They find 6 available seats together in the same row. How many ways can they be located if parents have to stay to the ends?
Answers
n!/(r!•(n-r)!)
n will be the total number of items, in this case, 6. r is the number of items being chosen, in this case, 4.
n! in this case will be:
6 • (6-1) • (6-2) • (6-3) • (6-4) • (6-5) = 6 • 5 • 4 • 3 • 2 • 1 = 720
r! will be:
4 • (4-1) • (4-2) • (4-3) = 4 • 3 • 2 • 1 = 24
Now to get (n-r)!
(n-r) = 2
(n-r)! = 2 • (2-1) = 2 • 1 = 2
So now we have:
720/(24 • 2) = 720/48 = 15
Then you would multiply by 2 because the parents each have two spots can sit in (the ones on the end) so the answer is 30.
I hope this helps.
Whta is the area of this figure 3ft 4ft 2ft 1ft 8ft
Answers
The answer is 192. 3 times 4 times 2 times 8 equals 192 (you can skip the one since it doesn't change the process
Which facts could be applied to simplify this expression? Check all that apply.
5x+3y+(-x)+6z
To add like terms, add the coefficients, not the variables.
First add 5x + x.
The simplified expression is 4x+3y+ 6z.
Only combine terms which contain the same variable.
The simplified expression is 5x+3y +6z.
Answers
Answer:
Step-by-step explanation:
To add like terms, add the coefficients, not the variables.
The simplified expression is 4x+3y+ 6z.
Only combine terms which contain the same variable.
It took Kelly 5 2/3 hours to fly from City A to City B then it took her another 2 3/5hours to fly from City B toCity C. Kelly flew a total how many hours?
Answers
Answer:
eto na po
Step-by-step explanation:
5 2/3 × 2 3/5 = 5 6/15 answer
the answer is 8 4/15
workings: you can convert the fractions to an improper fraction and add them, it would be easier!
5 2/3 > 17/3 (eq 1)
2 3/5 > 13/5 (eq 2)
after conversion, you must make the denominator the same, the common multiple is 15
take eq 1 multiply by 5 > 85/15
take eq 2 multiply by 3 > 39/15
85/15 + 39/15 = 124/15!!
124/15 convert back to mixed fraction > 8 4/15
hope it helped :D
Evaluate the expression when y=9 and x=7.
8y + x
Answers
Solution:
y = 9, x = 7
8y + x8(9) + 772 + 779;-;
Part A
Drag all of the steps necessary into the box to find the product of 2.3 x 0.5 using partial products.
Answers
\left[\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right]
The product of 2.3 x 0.5 using partial products is 1.15.
What is a partial products?A product obtained by multiplying a multiplicand by one digit of a multiplier having more than one digit.(So, the 2 in 23 would actually be 20.) For instance, 23 x 42 would become (20 x 40) + (20 x 2) + (3 x 40) + (3 x 2).
Given:
The given integer is
2.3 x 0.5
=23x5/100
According to given question we have
By use of partial products we get,
The partial product method involves multiplying each digit of a number in turn with each digit of another where each digit maintains its place.
(20*00)+(20*5)+(3*00)+(3*5)
=0+100+0+15
=115
=115/100
=1.15
Therefore, the product of 2.3 x 0.5 using partial products is 1.15.
Learn more details about partial products here:
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please help i will give brainliest to one who answers
You and a friend work at a job, The job paid $20 and you and the friend have to split it evenly, except your friend must make $1.00 more. How much will each of you get?5 sentences, please help i will give brainliest to one who answers
Answers
Answer:
20 ÷ 2 is 10. and since your friend you smoke $1 more they would get 11 dollars and you would get $9
Contempory Math
A person wants to purchase a DVD drive for his laptop computer. Assume that 79% of the drives are made outside the United States. Of the U.S -made drives, 3% are defectives and of the foreign-made drives, 9% are defective. Determine the probability that the drive purchased is U.S made and is not defective.
Answers
Answer:
20 or close to 20
Step-by-step explanation:
can someone help please?
Answers
Answer:
m = -4
Step-by-step explanation:
In y=mx+b m is slope, and b is y-intercept.
In this case m = -4
Hope this helps :)
The sum of the reciprocal of two consecutive integers is -17/72. Find the two integers
Answers
Answer:
Step-by-step explanation:
2x+3
Answer:
8*9=72, I think and if is wrong i'm sorry
Step-by-step explanation:
x = first number
x + 1 = second number
1 / x + 1 / ( x + 1 ) = 17 / 72
[ 1 * ( x + 1 ) + 1 * x ] / [ x * ( x + 1 ) ] = 17 / 72
[ ( x + 1 ) + x ] / [ x * x + x * 1 ) ] = 17 / 72
( 2 x + 1 ) / ( x ^ 2 + x ) = 17 / 72 Multiply both sides by 72
72 * ( 2 x + 1 ) / ( x ^ 2 + x ) = 17
( 72 * 2 x + 72 * 1 ) / ( x ^ 2 + x ) = 17
( 144 x + 72 ) / ( x ^ 2 + x ) = 17 Multiply both sides by x ^ 2 + x
144 x + 72 = 17 * ( x ^ 2 + x )
144 x + 72 = 17 * x ^ 2 + 17 * x
144 x + 72 = 17 x ^ 2 + 17 x Subtract 144 x to both sides
144 x + 72 - 144 x = 17 x ^ 2 + 17 x - 144 x
72 = 17 x ^ 2 - 127 x Subtract 72 to both sides
72 - 72 = 17 x ^ 2 - 127 x - 72
0 = 17 x ^ 2 - 127 x - 72
17 x ^ 2 - 127 x - 72 = 0
The solutions are:
x = - 9 / 17 and x = 8
- 9 / 17 isn't positive integers so x = 8
first number = 8
second number = 8 + 1 = 9
Proof:
1 / x + 1 / ( x + 1 ) =
1 / 8 + 1 / 9 =
( 1 * 9 + 1 * 8 ) / ( 8 * 9 ) =
( 9 + 8 ) / 72 = 17 / 72
Help this is for homework and I need it right now.
Answers
Answer:
E = $9.25 * H if i havent mistaken
Pls and thank you, take care, God bless you:))
Answers
Answer:
No movement
Step-by-step explanation:
How do you write 70% as a fraction?
Answers
Answer:
7/10
Step-by-step explanation:
70% is equal to 0.7 in other words 7/10 is the most simple form.
i need help with this question
Answers
Answer: What's the question?
Step-by-step explanation:
