Show that 4x - x? – 7 is always
negative.
Help
Question No 7
Answer:
Please check the explanation.
Step-by-step explanation:
Show that 4x - x² - 7 is always negative.
Given
4x - x² - 7
4x - x² - 7 is always negative because:
-x²-7 will alwas be negative for all the values of x, The value of - x² - 7 will always be less than 4x for all the values of xHence, 4x - x² - 7 is always negative
For example,
let suppose we enter x = 1
[tex]4(1)-1^{2} -7\\=4-1-7\\=4-8\\=-4[/tex]
let suppose we enter x = -1
[tex]4(-1)-(-1)^{2} - 7\\= -4 - 1 - 7\\= -12[/tex]
What is the inequality shown?
answer
step by step explanation :
-2 <_ x <_ 2
(<_ ) lesser or equal to
14 + 3 = 50 - 6
Please let me know quick with solving steps!
Answer:
Can you show me a picture, that would help.
Abby sold 152 copies of a CD she made for $13.99 each. If she earns 33% profit from each CD,about how much profit will she earn in all?
Answer:
$701.74
Step-by-step explanation:
33% of 13.99 is 4.6167
4.6167 x 152 is 701.7384
Rounding the thousandth gives you 701.74
Therefore the answer is $701.74
Solve -1/2 + (3/4 x 4/9) = ?
Answer:
=-1/6
Step-by-step explanation:
-1/2 + (3/4 * 4/9)
3/4 * 4/9 = 12/36
12/36 simplify to 1/3
-1/2 + 1/3 = -1/6
At a bookstore, you buy a calendar for $5 and some books for $3 each. You spend a total of $26. How many
books do you buy? Use the following equation to find the number of books b bought; 3b+5=26
Write the rule to describe the transformation.
C(4,-5), D(3,-1), E(5,-3)
C'(2,-2.5), D'(1.5, -0.5), E' (2.5,-1.5)
Answer:
(x, y) ----> (x - 2, y + 2.5)
This is the rule because a letter with an apostrophe is the image after. If it has no apostophre, it is the PRE-IMAGE. Let's look at C.
C (4, -5)
C'(2, -2.5)
4-2 = 2
-5+2.5 = -2.5
Since those are the coordinates of C', that is your rule.
Item 6 A rectangular prism has a length of 8 meters, a width of 4 meters, and a height of 5 meters. Which equations could be used to determine the volume, V, of the prism? Select each correct answer. V = 12 × 5 V = 5 × 4 × 4 V = 8 × 4 × 5 V = 32 × 5
Answer:
I am 100% sure that the answer is 240.
Step-by-step explanation:
The volume of the prism is 160 m³ and the correct equation is V = 8 × 4 × 5.
How to write a linear equation?A linear equation for the given case can be written by assuming any variable as the unknown quantity. Then, as per the given data the required operations are done and it is equated to some value.
The length, width and height of the rectangular prism are given as 8m, 4m and 5m respectively.
Since, the volume of the prism is given as the product of its length, width and sides.
For the given prism the volume can be obtained as,
V = 8 × 4 × 5
⇒ V = 160 m³
Hence, the correct equation is given as V = 8 × 4 × 5.
To know more about linear equation click on,
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The radius of a circle is 1 centimeter What is the circle's area?
Answer: It would be A= 3.14cm²
Step-by-step explanation:
Solve for x using any method!
4x – 9 = 15
a
x = 4
b
x = 1
c
x = 20
d
x=6
please hurryyyyyy
Answer:
d
Step-by-step explanation:
Answer:
D. x=6
Step-by-step explanation:
4x-9=15
Add 9 on both sides
Now the equation will be
4x=24
Divide 4 on both sides which will end up giving you
x=6
Analyze the diagram below and complete the instructions that follow.
Find the value of x.
A. 18
B. 22
C. 24
D. 28
Answer:
A
Step-by-step explanation:
Using Pythagoras' identity on the large right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
(x + 32)² = 30² + 40² = 900 + 1600 = 2500 ( take the square root of both sides)
x + 32 =[tex]\sqrt{2500}[/tex] = 50 ( subtract 32 from both sides )
x = 18 → A
2 out of 5 runners finished in fewer than 10 minutes. What percent of the runners finished in fewer than 10 minutes?
Answer:
40%
Step-by-step explanation:
2/5 can be converted to 40/100 by multiplying the numerator and denominator by 20.
40/100 is equivalent to 40%.
Find the slope of the line through (3, -4) and (5, 4). Be sure to simplify completely.
Answer: 4
Step-by-step explanation: (3,-4) (5,4)
4-(-4)= 8
5-3= 2
Divide both numerator and denominator by 2
The slope is 4
Decide if the following equation is growth or decay?
y = 475 (0.256)
Decay
Growth
Answer:
decay im pretty sure
Step-by-step explanation:
I need helppppppppppppp
Answer:
use math
Step-by-step explanation:
Please help me thanks please
Answer:
um all you do is multiply 21 as the length by 14 was the width (LxW)
Step-by-step explanation:
=294 is your answer I think ...
Find the slope and y-intercept of 5x – y = 7. Reduce all fractions.
slope = - Ô =
y-intercept =
B
Answer:
slope= ( 5,1 ) Y-intercept= ( 0,-7 )
Step-by-step explanation:
HELPPP
How many liters would you have to sell to earn
$36?
Enter the correct answer.
Answer:
90
Step-by-step explanation:
You would get 36 dollars from 90 liters.
The answer is in the photo.
Rectangle ABCD has a width of 8 yards and a length of 20 yards. Rectangle QRST, which is similar to rectangle ABCD, has a length of 40 yards.
Find the scale factor of ABCD to QRST and the perimeter of each rectangle.
Answer: 16 yards would be your answer
The scale factor of ABCD to QRST is 1:2
The perimeter of rectangles ABCD and QRST are 56 yards and 112 yards respectively.
Rectangle ABCD has a width of 8 yards and a length of 20 yards.
Rectangle QRST is similar to rectangle ABCD.
Rectangle QRST has a length of 40 yards.
Scale factor:Therefore, the scale factor of ABCD to QRST can be calculated as follows:
let
x = width of rectangle QRST
8 / x = 20 / 40
8 / x = 1 / 2
x = 16
The scale factor of ABCD to QRST is 1:2
Perimetersperimeter ABCD = 2(8 + 20) = 56 yards
perimeter QRST = 2(16 + 40) = 112 yards.
learn more on similar rectangles here: https://brainly.com/question/8956702?referrer=searchResults
HURRY I NEED HELP
Does the graph shown below represent Y as a linear function of x
Yes or No
Answer:
no
Step-by-step explanation:
linear functions have straight lines
so this is not a linear function
5+2x+6=x +10
Solve this equation and show ur work
Answer:
x = -1
Step-by-step explanation:
5 + 2x + 6 = x + 10
11 + 2x = x + 10
-x -x
11 + x = 10
-11 -11
x= -1
Answer:
1
1
+
2
=
+
1
0
Step-by-step explanation:
it was the aaaa the we as be the
5 12 14 will form a acute?
True or false
No it won't. it's false
cuz proofs here.
(5²)+(12²)= (169)
√(169) = 13
.. so if 13 was the number at 14
it would have been true.
currently the answer is false
Two sets are shown in the Venn diagram. Set N represents the natural numbers, and Set W represents the whole
numbers. in which set does the values -45 belong?
Answer:
In my opinion this is the whole w
Step-by-step explanation:
Answer:
c
Step-by-step explanation:
both
Which sequence explains a geometric method of determining StartFraction 3 minus 17i Over 2 + 2 I EndFraction ?
Ruben bought a 20-pound bag of dog food for his Great Dane Tank Acer 7 days, all the dog
food was gone
How much dog food did Tank eat each day?
wrice your answer as a proper fraction or med number
Answer:
2/3
Step-by-step explanation:
I need help someone pls help me
Answer:
quit
Step-by-step explanation:
what do u think?
for every 6 white roses, there are 8 pink roses. If the floral arrangement is proportional then how many pink roses are in a arrangement with 10 white roses
Answer:
13.33 pink roses
Step-by-step explanation:
We are told the floral arrangements are proportional , hence:
6 white roses = 8 pink roses
10 white roses = x
Cross Multiply
6 white roses × x = 10 white rose × 8 pink roses
x = 10 white roses × 8 pink roses/6 white roses
x = 13.333333333 pink roses
x ≈ 13.33 pink roses
Select the correct answer.
What is V192 in simplest form?
OA. 32/3
OB. 3V
Ос.
OD
2748
Answer:
should be C 8v3
Step-by-step explanation:
hope this helps you
Answer:
8V3
Step-by-step explanation:
Luann wrote an expression showing 8 times the difference of y and 3. Select all expressions that are equivalent to the value of Luann’s expression.
8y−3
8y−11
8y−24
8y+24
8(y−3)
Answer:
8y-24 and 8(y-3)
Step-by-step explanation:
(+5) - (-7)
thank you in advance
Answer:
12
Step-by-step explanation:
