Factor the following trinomial:
Answer:
D
Step-by-step explanation:
Given
n² - n - 42
Consider the factors of the constant term (- 42) which sum to give the coefficient of the n- term (- 1)
The factors are - 7 and + 6 , since
- 7 × + 6 = - 42 and - 7 + 6 = - 1 , then
n² - n - 42 = (n - 7)(n + 6) ← in factored form
Solution :-
Given,
n^2 - n - 42We need to factorise it.
So let's start !!
Two factors are -7 and 6.
Therefore,
n^2 - 7n + 6n - 42 n (n - 7) + 6 (n - 7) (n - 7) (n + 6)Given the area of a rectangle is 2x2 - 5x - 12, what is the width if the length is x – 4?
Answer:
2x + 3
Step-by-step explanation:
So, the equation here is:
[tex]\frac{2x^2 - 5x - 12}{x - 4}[/tex]
And so, using this we can set up our synthetic equation using the dividends as the coefficients of the equation, which are 2, -5, and -12; and the divisor 4, which derives from -4.
It's a bit hard to create a table here, so I'll just write out the values and hope you piece it together.
4 | 2 -5 -12
| 2 8 12
2 3 0
Thus, we are given our coefficients for our desired equation.
2x + 3
And we can ascertain this to be the answer by working the converse.
(2x + 3)(x - 4)
2x² - 5x - 12
Help me plz. You have to evaluate the expression.
Answer:
2+4 + 0+ 1 = $7
Step-by-step explanation:
PLEASSSEEE HELLPPP
What is the product if q and r are positive integers?
A
B
C
D
**I cannot type the answers and part of the question on here, so please refer to the image I attached**
Answer:
D: 14q + 21√qr
Step-by-step explanation:
We want to find the product of;
(2√q + 3√r) and 7√q.
Where p and q are integers.
Using distributive property, we have;
(2√q × 7√q) + (3√r × 7√q)
>> 14q + 21√qr
Correct option is D
Evaluate 5c – 3d + 11 when c= 7 and d= 8.
answer: aiuaejaeijaeokjaea;ij;eoiroier;iijw;ije;ipjeja;eoijie;iw
Step-by-step explanation:
Answer:
22
Step-by-step explanation:
Substitute the values
5(7) - 3(8) + 11
35 - 24 + 11
11 + 11
22
b) The graph of y = x^2–2x + 5 is
drawn on the axes on the left.
Use the graph to estimate the
values of x when y = 6.
Give your answers to 1 decimal
place.
Better yet, let y = 6 and solve for x.
6 = x^2 –2x + 5
Now solve for x.
a fair number cube with faces numbered 1 through 6 was rolled 12 times the cube landed with the number to face up six times what is the difference between the experiment probability and the theorical probability of the number two landing face up
1/3
1/2
1/6
2/3
Answer:
ri1/2 you should mark the other person brainliest
Step-by-step explanation:
A large clock on a county courthouse has a circumference of about 25 feet. The minute hand extends from the center of the clock to the edge of the clock. How long is the minute hand?
Answer:
Minute hand = 3.98 feet
Step-by-step explanation:
Circumference of a circle can be calculated by
C = 2 x pi x radius
The minute hand extends from center to the edge means that minute hand is the radius and that is required.
putting values in above equation
C = 25 and pi = 3.14
25 = 2 x 3.14 x radius
radius = 25 / 6.28
Radius = 3.98 feet
help pls 20 points
this is geometry/algebra
Answer:
cymath.com
Step-by-step explanation:
fruits are packed in boxes each weighing 2 kg 500 g .how many such boxes can be n loaded kn a van.which can not carry beyond 250kg?
Answer:
18
Step-by-step explanation:
Just divided
Please Brainliest me
What number must be divided by 15 3/4 so that the quotient is 60?
help please I don't understand
Find mAB.
I need help!
Answer:
Im working on it hold tight!
Step-by-step explanation:
I don’t get it honestly
Answer:
C
Step-by-step explanation:
The area of a rectangle is x2 - 5x – 36. What is the length and width?
Answer:
[tex](x-9)(x+4)[/tex]
Step-by-step explanation:
We can solve this by factoring [tex]x^2 -5x -36 = (x-9)(x+4)[/tex]
This gives us our two sides because length and width multiplied will give us the area
Can someone please help i can’t tell which side the base would be and i don’t understand- i will mark brainliest if correct- Thanks !!
Answer:
Base = 4 units
Height = 8 units
I think the blocks are a unit each and you have to count how much space the triangle is taking up
Answer:
6
Step-by-step explanation:
Remark
This is one of those things that when you see it, you think that really is something.
The trick is to subtract a smaller right triangle from a larger one.
The base for both triangles is 4 (going from where the right angle is to your right where the lines of the red enclosure meet.
Calculations
The height of the larger triangle is 8
The height of the smaller triangle is 5
Area_L = 1/2 8 * 4 = 1/2 * 32 = 16
Area_S = 1/2 5 * 4 = 1/2 * 20 = 10
Red area = 1/2 * 32 - 1/2*20 = 16 - 10 = 6 units
A survey of 5,913 American adults concludes that 53% of them prefer Captain America to Ironman. Find the Margin of Error. Type your answer as a Percentage rounded to 1 decimal.
Answer:
1.3%
Step-by-step explanation:
Phat = 0.53
1 - phat = 1 - 0.53 = 0.47
Sample size, n = 5913
Assume the confidence level = 95%
Zcritical at 95% = 1.96
Margin of Error = Zcritical * √(phat(1 -phat)) / n
Margin of error :
1.96 * √((0.53 * 0.47) / 5913)
1.96 * 0.0064905
= 0.0127215
= 0.0127215 * 100%
= 1.272%
= 1.3%
Jason is building a toy box for his little brother Tom. He has painted all six pieces of wood on the outside only. How much area did Jason paint if the lid has a length of 3.5 feet and a width of 3.5 feet and the toy box is 2 feet tall?
Answer:
52.5 feet
Step-by-step explanation:
3.5x2.5x2=52.5
Kaitlyn opens an account with an initial deposit of $7,250. The account earns 10% interest compounded annually. What is the amount of interest earned after 18 months if no additional money is deposited or withdrawn?
Answer:
the interest earned amount is $1,114.251
Step-by-step explanation:
The computation of the interest earned is shown below:
But before that the future value is
= Present value × (1 + rate of interest)^number of years
= $7,250 × (1 + 0.10)^1.5
= $7,250 × 1.10^1.5
= $8,634.251
Now the interets earned is
= $8,634.251 - $7,250
= $1,114.251
Hence, the interest earned amount is $1,114.251
HURR FAST MARK AS BRAINIEST PLS
Answer:it would be c
Step-by-step explanation:
Answer:
C: {-2, -1, 0, 1, 2, 3}
PLEASE HELP MATH 10+ POINTS PLEASE
Answer:
749
Step-by-step explanation:
8349
Answer:
80
Step-by-step explanation:
what is the circumference of the circle if r= 3.5 feet? Use 22/7 for pi
Answer:
circumference of circle=2πr
2×22/7×3.522hope it helps.
HELLLLLP ME DON'T GO PAST THIS QUESTION!!!!!! JUST AREA WITH COMPOSITE 3D SHAPES!!!! 100 POINTS!!!!!
Answer: v+6*8*2 = 96
v = 6*8 = 48
5.5-2 = 3.5
48*3.5 = 168
168/2 = 84
96+84 = 180
The volume is 180 feet.
The O'Neals purchased 2 adult and
4 children's tickets to see the show
and paid $46.50. The Gerrigs paid
$62.25 on their 3 adult and 5
children's tickets. What is the cost of
an adult ticket?
20
Answer:
See in the picture
Step-by-step explanation:
I solved the valye for the ticket using linear systems, defining X and Y as the ticket value for adults and children.
I write the number seven with a bar on it. I hope you understand it (see 7.5 in the picture)
Please answer correctly I will mark you Brainliest!
Answer:
5 metres
Step-by-step explanation:
Remember this!
[tex]\sf{Volume \ of \ Rectangle = Length \times Breadth \times Height}[/tex]
Hope it helps :)
A line crosses through the points (0,2) and (-10, -16). Which of the following is the slope of the line?
A. 9/5
B. 5/9
C. -9/5
D. 1/3
Answer:
A). 9/5
Step-by-step explanation:
To find the slope, plug the values of x and y into the slope formula.
y2 - y1 / x2 - x1
-16 - 2 / -10 - 0
9/5
Kirsty bought a new TV. The total cost of the TV was £360, in the sale it has 12.5% discount. What is the new price of the TV?
please help i will give you brainliest!!!!!
Answer:
a:5400
b:5400
Step-by-step explanation:
if you take 3 and multiply it by 30 then add 60 then it equals 5400
Margret works at a bakery. She is paid $300 every week plus $12 an hour for any
overtime she puts in. Which equation best represents the overtime, x, she put in, if she
earned $450 in one week?
Answer:
300+12x=$450
Step-by-step explanation:
what is the area of this figure?
Answer:
A = 147 m²Step-by-step explanation:
The area of this figure is a sum of areas of a rectangle 5 m × 21 m and a triangle with base of 21 m and hight of 4 m.
A = 5×21 + 0.5×21×4 = 105 + 42 = 147 m²