What is the value of the expression below when z=6z=6?
2z2 -8z-2
Will the product of two positive numbers be positive or negative? Why?
PLEASE HELP1!1!1!1!!1
Answer:
Positive
Step-by-step explanation:
Two positive integers multiplied will always be positive.
Answer:
Positive
Step-by-step explanation:
two positive will always be a positive because of the rule of multiplication
identify the vertex of the function graphed below.
A. (3,1)
B. (0,-2)
C. (1,1)
D. (2,2)
Answer:
D. (2,2)
Step-by-step explanation:
I did the test and I got it correct. :DD
Look at this triangle.
B
11 cm
4 cm
Work out length AC.
(my teacher told me to start out with c first, c= an something like that I don’t remember)
Step-by-step explanation:
<c =90 °
So, Pythagoras theorem can be used,
Hypotenuse ² = base ² + altitude ²
AB²=AC²+BC²
11²=AC²+4²
11²-4²=AC²
121-16=AC²
Root 105=AC
AC=10.2 cm
The length of AC is 10.25 cm
What is pythagorean theorem ?
If ΔABC is a right angle triangle, then
AB² = BC²+AC²
where AB = Hypotenuse, BC & AC are adjacent sides of the right angle
What is the required length of the side ?Given, hypotenuse = AB = 11 cm
One of adjacent sides = BC = 4 cm
We have to find the length of AC.
Using pythagorean theorem,
AB² = BC²+AC²
⇒ AC² = AB² - BC²
⇒ AC² = 11²-4²
⇒ AC² = 121-16
⇒ AC = √105
⇒ AC = 10.25
So the length of AC = 10.25 cm
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Riley counted the number of balls on one layer of a box, 34. The box has 8 layers. How many balls can the box hold?
Answer:
8 times 34= 272
Step-by-step explanation:
Nicholas spent 40% of his savings to pay for a video game that cost him $40. How much money was in his savings to begin with?
Answer:
nah and yall kids stop looking on here to cheat ronnie wilson
Step-by-step explanation:
Scientific notation of 48200
Answer:
4.82 × 10^4
Step-by-step explanation:
please help will ill brainiest if correct
Answer:
The answer would be -4.
Step-by-step explanation:
yeah I didn't do too good on that unit with the integers kind of thing so, yeah....
how I did this question: imagine if you owe someone $9 but you only have $5 so you give them those $5 so now you only owe them for dollars.
7
4
8
1
Write down the largest even number
you can using all four cards
Answer:
8
7
4
1
Step-by-step explanation:
8 is the answer
I need help on this pls
Answer:
Area= 56 cm²
Step-by-step explanation:
Figure given is a rhombus
Area= 1/2*d1*d2
if
[tex]a = \frac{2x + \sqrt{x} }{x} [/tex]
and
[tex]b = \frac{1 - 2 \sqrt{x} }{ \sqrt{x} } [/tex]
without sing a calculator, show that
[tex](a + b) {}^{2} = \frac{4}{x} [/tex]
Answer:
Step-by-step explanation:
Rationalize the denominator of b. So, multiply the numerator and denominator by [tex]\sqrt{x}[/tex]
[tex]b = \frac{(1-2\sqrt{x}) *\sqrt{x}}{\sqrt{x}*\sqrt{x} }=\frac{1*\sqrt{x} -2\sqrt{x} *\sqrt{x} }{\sqrt{x} *\sqrt{x} }\\\\=\frac{\sqrt{x} -2x}{x}\\[/tex]
Now, find a +b
[tex]a +b = \frac{2x+\sqrt{x} }{x}+\frac{\sqrt{x} -2x}{x}\\\\=\frac{2x+\sqrt{x} +\sqrt{x} -2x}{x}[/tex]
Combine like terms
[tex]= \frac{2x-2x+\sqrt{x} +\sqrt{x} }{x}\\\\=\frac{2\sqrt{x} }{x}[/tex]
Now find (a + b)²
(a +b)² = [tex](\frac{2\sqrt{x} }{x})^{2}[/tex]
[tex]= \frac{2^{2}*(\sqrt{x} )^{2}}{x^{2}}\\\\= \frac{4* x}{x^{2}}\\\\= \frac{4}{x}[/tex]
Hint: [tex]\sqrt{x} *\sqrt{x} =\sqrt{x*x}=x[/tex]
Write 33 % as a fraction in simplest form.
3
Answer:
33/100
Step-by-step explanation:
33/100 bc percentage goes up to 100
pls help and explain I will mark you brainliest btw. :)
Step-by-step explanation:
count the number of full boxes
count yhe number of the unfull boxes
then add them together
divide the answer by two
What is a congruence statement? PLEASE ANSWER HURRY
Answer:
A congruence statement says that two polygons are congruent.
Step-by-step explanation:
To write a congruence statement, list the corresponding vertices in the same order.
Simplify 4х+ 2-
+8-12
О
3х - 2
3х + 4
о
5х – 4
5х + 4
Can someone please help!!! I really need the answer
Answer:
3x - 2
Step-by-step explanation:
[tex]4x + 2 - \frac{ {x}^{2} + x - 12}{x - 3} \\ \\ = 4x + 2 - \frac{ {x}^{2} + 4x - 3x- 12}{x - 3} \\ \\ = 4x + 2 - \frac{ {x}(x + 4) - 3(x + 4)}{x - 3} \\ \\ = 4x + 2 - \frac{ (x + 4) \cancel{(x- 3)}}{\cancel{(x- 3)}} \\ \\ = 4x + 2 - (x + 4) \\ \\ = 4x + 2 - x - 4 \\ \\ = 4x - x + 2 - 4 \\ \\ = 3x - 2[/tex]
ANSWER THIS NOW please. An amusement park constructed a new ride called the "Haunted Hotel." There are x2 –
3 floors in this hotel. Each floor is 2x2 + 5 feet high. Which expression shows the total
height of this hotel?
Answer:
2x⁴ - x² - 15
Step-by-step explanation:
(X² - 3)(2x² + 5)
[x²(2x² + 5)] - [3(2x² + 5)]
= 2x⁴ - x² - 15
−2x=x2−6 Rewrite the equation by completing the square.
Answer:
(x + 1)² = 7
Step-by-step explanation:
Given:
-2x = x² - 6
We'll start by rearranging it to solve for zero:
x² + 2x - 6 = 0
The first term is already a perfect square so that's fine. Normally, if that term had a non-square coefficient, you would need to multiply all terms a value that would change that constant to a perfect square.
Because it's already square (1), we can simply move to the next step, separating the -6 into a value that can be doubled to give us the 2, the coefficient of the second term. That value will of course be 1, giving us:
x² + 2x + 1 - 1 - 6 = 0
Now can group our perfect square on the left and our constants on the right:
x² + 2x + 1 - 7= 0
x² + 2x + 1 = 7
(x + 1)² = 7
To check our answer, we can solve for x:
x + 1 = ± √7
x = -1 ± √7
x ≈ 1.65, -3.65
Let's try one of those in the original equation:
-2x = x² - 6
-2(1.65) = 1.65² - 6
- 3.3 = 2.72 - 6
-3.3 = -3.28
Good. Given our rounding that difference of 2/100 is acceptable, so the answer is correct.
PLEASE SOMEONE HELP ME! I NEED THE ANSWER ASP
The water spray from a spinning lawn sprinkler covers a circular area of 196π square feet. If Ray is standing 30 feet away from the sprinkler as it is spraying water, which of the following statements is true?
A. Ray will get wet because the sprinkler sprays an area with a radius of 196 feet and 30<196.
B Ray will stay dry because the sprinkler sprays an area with a radius of 14 feet and 14<30.
C. Ray will stay dry because the sprinkler sprays an area with a radius of 28 feet and 28<30.
D. Ray will get wet because the sprinkler sprays an area with a radius of 98 feet and 30<98.
Answer: B
Step-by-step explanation:
196π=πr^2
196=r^2
14=r
14<30
Which of the ratios below is equivalent to 8:5?
Answer:
Nobody can answer this question if you don't tell us what are the ratios that are 'below'. We have no answers to choose from...
Please help me with this question!
Answer:
Your Answer Is 10
Step-by-step explanation:
1st Factor the Numerator and Denominator then cancel the common factor.
Hope It Help You If Yes then Please make me the Brainiest.
Thank You
Parshv
Tania earns $16 per hour at the Glendale Florist. She regularly works 40 hours per week.
She is paid time-and-a-half for each hour of overtime work. Last week she worked 43
hours.
7) How much was she paid for her regular hours?
a $600
b. S520
C. S640
Answer:
$640 is how much she will make in in regular hours.
Step-by-step explanation:
Create an equation from the word problem and solve.
Option A is correct, $640 is the pay for her regular hours.
What is Equation?
Two or more expressions with an Equal sign is called as Equation.
Given that Tania earns $16 per hour at the Glendale Florist.
She regularly works 40 hours per week.
She is paid time-and-a-half for each hour of overtime work
Last week she worked 43 hours.
We need to find the payment she received for her regular hours.
16h is the expression to find the pay for h hours.
As she work for 40 hours.
Now plug in h as 40.
16×40
$640
Hence, option A is correct, $640 is the pay for her regular hours.
To learn more on Equation:
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Terry puts 14 comic books on each shelf of a bookcase. The expression 14s can be used to find the number of books on the shelves. Use the expression to find the total number of comic books on 7 shelves.
Answer:
dump-the-books-out
Step-by-step explanation:
i-think
may someone please help?
Answer:
B' = (-7,3)
Step-by-step explanation:
B = (7,3)
mirrored would be:
B' x position would be -7
B' y position would not change
B' = (-7,3)
What is the volume of a cylinder with a height of 7.1 ft and a base with a diameter of 12.8 ft, to the nearest tenth of a cubic foot?
Answer:
V=π(d
2)2h=π·(12.8
2)2·7.1≈913.62541ft³ Step-by-step explanation: because i said so
can y’all please help. I will send points if you want me to.
Answer:
the third one has a 2 acute angles 2 abuse angles and the x value is 110
Step-by-step explanation
the x value has to be bigger then 90 degree angles because it is a abuts angle and the 57 angle is a acute angle
1) calcula a.b , si 120 =1+2+3+... +ab
Answer:
ab=195
Step-by-step explanation:
HELP ASAP!!!
Profit is the difference between revenue and cost. The revenue, in dollars, of a company that manufactures cell phones, can be modeled by the polynomial 2x2 + 55x + 10. The cost, in dollars, of producing the cell phones can be modeled by 2x2 – 15x – 40. The variable x represents the number of cell phones sold.
What expression represents the profit, and what is the profit if 240 cell phones are sold?
40x – 30; $2,400
40x – 30; $9,570
70x + 50; $16, 850
70x + 50; $28,800
Answer:
Given that the equation of the revenue is R=2x2+55x+10 and the equation of the cost is C=2x2 – 15x – 40, you will get the profit by subtracting the revenue from the cost: R-C=P. Therefore, P=(2x2+55x+10)-(2x2 – 15x – 40). You will get P=70x+50 where x is is the number of cellphones sold. If 240 cellphones are sold, then the profit is 16850 dollars.
Step-by-step explanation:
The profit expression is 70x + 50 and the profit if 240 cell phones are sold is $16,850
How to calculate profitRevenue, R = 2x² + 55x + 10Cost, C = 2x² – 15x – 40where,
x = number of cell phones sold.
Profit = Revenue - cost
= (2x² + 55x + 10) - (2x² – 15x – 40)
= 2x² + 55x + 10 - 2x² + 15x + 40
Profit = 70x + 50
If x = 240Profit = 70x + 50
= 70(240) + 50
= 16,800 + 50
= $16,850
Learn more about profit:
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what is 2/5 * 3/11?....
Answer:
6/55
Step-by-step explanation:
[tex]\frac{2}{5}*\frac{3}{11}=\frac{2*3}{5*11}=\frac{6}{55}[/tex]
Which description matches the function represented by this graph?
A. exponential growth
B. linear growth
C. linear decay
D. exponential decay
Answer:
your answer will be option D. exponential decay
Step-by-step explanation:
have a nice day/ night bye ^_^
The volume of a box is 400 in.^3in. 3 . The height is 5 in. What is the area of the base of the box?
Answer:
The area of the base is 80 in². 80 square inches.
Step-by-step explanation: V = b×h
Divide the volume by the height to find the area of the base.
400 ÷ 5 = 80