Answers
Answer:
z = -3/2 , z = -1/2
Step-by-step explanation:
Given:
7z² + 8z + 3 = 3z²
Find:
Values of z
Computation:
7z² + 8z + 3 = 3z²
7z² + 8z + 3 - 3z² = 0
4z²+ 8z + 3 = 0
4z²+ (6+2)z + 3 = 0
4z²+ 6z + 2z + 3 = 0
2z(2z + 3) + 1(2z + 3) = 0
(2z + 3)(2z + 1) = 0
So,
z = -3/2 , z = -1/2
Related Questions
Find the total cost, to the nearest cent, for a meal at a restaurant that cost $19.74 with
an additional sales tax of 7.5%
Answers
Multiply 19.74 times 0.075 (7.5% converted to a decimal) to get 1.48 (the amount of tax) and add that to the cost of the meal (19.74)
A convex octagon has interior angles with measures (x + 55). (3x + 20), 4x°. (4x - 10). (6x - 55) (3x + 52). 3.xº, and (2x + 30). Find
the value of x.
Answers
Answer:
mmmmmmmmkkkkkkkkkkkkkkkkkk
John is a computer salesman. He makes 8% commission on all sales. If John’s sales for the week are $24,300, how much did he earn in commission?
Answers
He made $1 944 in commission
neeeeed help asappppppp
Answers
Answer:
first chart 27
second chart 6
Step-by-step explanation:
Which expressions are equivalent to 4/5×15: 5x3, 4x 5/15, 4x3, 3x 15/5, 4x 15/5.
Answers
Answer:
these are the equivalwnt expressions 4/5×15=4×5/15; 5×3=3×15/5
The expression equivalent to 4/5 × 15 is 4×3
What is the BODMAS rule?According to the BODMAS rule, the brackets have to be solved first followed by powers or roots (i.e. of), then Division, Multiplication, Addition, and at the end Subtraction. Solving any expression is considered correct only if the BODMAS rule or the PEMDAS rule is followed to solve it.
Given here the expression 4/5×15 thus simplifying it we get
4/5×15= 4×3
= 12
Hence, The expression equivalent to 4/5 × 15 is 4×3
Learn more about the BODMAS rule here:
https://brainly.com/question/29795897
#SPJ2
how do you simplify 4 ^2 × 4^5
Answers
Answer:
4^7
Step-by-step explanation:
4^2 + 4^5
=> 4^ 2+5
=> 4^7
Answer:
Step-by-step explanation:
Solve the equation -10(d+1)=-14 I ready, please help ASAP!!
Answers
Answer:
d = 0.4
Step-by-step explanation:
-10 (d + 1) = - 14
=> -10d - 10 = -14
=> -10d = -14 + 10
=> -10d = -4
=> 10d = 4
=> d = 4 / 10
=> d = 0.4
Hope it helps :)
Please mark my answer as the brainliest
Describe the sequence of transformations that shows a quadrilateral of rstu is similar to quadrilateral VXYZ
Answers
Answer: What does the figure look like exactly?
Step-by-step explanation:
what the reciprocal of 7/9 the reciprocal of 9
Answers
Answer:
tge reciprocal of 7/9 is 9/7 while the reciprocal of 9 is 1/9
In order to find the reciprocal of a number, we should just flop it over.
If we have a fraction, and we're asked to find its reciprocal, we should just flop it over.
Please consult the formula for more details:-
[tex]\sf{The~reciprocal~of~a~is~\frac{1}{a}} \\The~reciprocal~of~\frac{a}{b} ~is~\frac{b}{a} }}[/tex]
According to the formula,
[tex]\sf{The~reciprocal~of~\frac{7}{9} ~is~\frac{9}{7} }\\The~reciprocal~of~9~is~\frac{1}{9} }}}[/tex]
note:-Hope everything is clear; if you need any clarification/explanation, kindly let me know, and I will comment and/or edit my answer :)
find the value 4/25 1/2
Answers
Answer:
2/5
Step-by-step explanation:
we know any number raised to power 1/2 means that we need to find the square root of that number.
(4/25)^1/2= =√(4/25)√4/√25
√4=2
√25=5
√(4/25=2/5
(hope this helps can i plz have brainlist :D hehe)
Which statement is true? Select all that apply?
A) 2/7 x 3/8 < 3/8 because 2/7 < 1
B) 2/7 x 3/8 > 3/8 because 2/7 > 1
C) 2/7 x 3/8 > 2/7 because 3/8 > 1
D) 2/7 x 3/8 < 2/7 because 3/8 < 1
Answers
what is this ???????/ 9.1 ∙ 102
Answers
Step-by-step explanation: 9.1 x 102 = 928.2.
the distance between two cities on a map is 3.5 centimeters. The map uses a scale in which 1 centimeter reprecents 20 kilometers. what is the actual distance between these two cities in kilometers?
Answers
Answer:
70 kilometers
Step-by-step explanation:
Set up a proportion where x is the actual distance
[tex]\frac{1}{20}[/tex] = [tex]\frac{3.5}{x}[/tex]
Cross multiply:
x = (20)(3.5)
x = 70
So, the actual distance is 70 km
I don't know how to do in phone but will try to make u brainliest if u answer these Q for me..
Answers
Answer:
Step-by-step explanation:
18 cubic units.
:::::
Length = 90÷(6×3) = 10 units
:::::
10 cubes × (4 cm³)/cube = 40 cm³
:::::
2×5×6
and
5×3×4
Help ASAP I’ll give 51 points and anything I need it now pls
7th grade math
Answers
3x-x+2=4 is the answer <3
A gas station sells 1600 gallons of gasoline per hour if it charges $ 2.70 per gallon but only 900 gallons per hour if it charges $ 2.95
per gallon. Assuming a linear model
(a) How many gallons would be sold per hour of the price is $ 2.90 per gallon?
Answer:
(b) What must the gasoline price be in order to sell 1300 gallons per hour?
Answer:
Answers
Answer:
Look just at finding the linear model. Two points. Use price per gallon for x and gallons per hour sold for y. Your two points (x,y) are (2.15,1600) and (2.55,800).
Slope m=%281600-800%29%2F%280.15-0.55%29
m=800%2F0.40
m=2000
Using point-slope form for a line, and the lower-y point,
y-800=2000%28x-2.55%29
highlight%28y=2000%28x-2.55%29%2B800%29
Joaquin can read one comic book in 15 minutes. Write and solve an equation to determine how many comic books he can read in 75 minutes.
Answers
X^3+9X^2–25X–33=0
Find The root of X??
Answers
Answer:
x=-11, -1, and 3
Step-by-step explanation:
x^3+9x^2-25x-33=0
There are formulas to solve cubics, but that probably is not the way you are expected to go. Here is a trial and error approach that works in this case.
Assume that the cubic can be factored and that the roots are r1, r2, and r3. Then the factored form is
(x-r1)(x-r2)(x-r3)=0
This shows that the constant must equal the product of the roots.
(r1)(r2)(r3)=-33
One possibility is that the roots are integers. In this case, a factor of 33 might work. Prime factorization of 33 gives 3 and 11. Try 3. Then (x-3) is a factor.
Divide the cubic by (x-3). It works. the result is
x^2+12x+11
This has factors of (x+11) and (x+1). Therefore, the roots are 3, -1, and -11
Please help fast I’ll give u a lot of points
Please say the right answer
Answers
Answer:
Plant A is increasing 2cm each day.
Plant B is increasing 6cm each day
Plant B is increasing 4cm more than Plant A each day.
Maya took a taxi from her house to the airport. The taxi company charged a pick-up
fee of $1.90 plus $4.50 per mile. The total fare was $24.40, not including the tip.
Write and solve an equation which can be used to determine m, the number of miles
in the taxi ride.
Answers
HELP PLEASEEEEEEEEEEE!!!
Answers
Answer:
The graph under the "U" graph
Step-by-step explanation:
A side of the triangle below has been extended to form an exterior angle of 128° . Find the value of x.
Answers
Answer:
Step-by-step explanation:
The sum of adjacent angles traversed by a line must equal 180 degrees.
128+x=180
x=52
Answer:
x=52 degrees
Step-by-step explanation:
x=180-128=52 degrees because x is supplementary to 128 degrees.
find the diamtere of a circle if its radius is 96.5cm
Answers
[tex] \huge \blue{\tt{Answer:}} [/tex]
[tex] \sf {diameter = 2\times {radius}} = \sf{2\times{96.5}} = \sf{193~cm} [/tex]
A gas station sells 1600 gallons of gasoline per hour if it charges $ 2.70 per gallon but only 900 gallons per hour if it charges $ 2.95
per gallon. Assuming a linear model
(a) How many gallons would be sold per hour of the price is $ 2.90 per gallon?
Answer:
(b) What must the gasoline price be in order to sell 1300 gallons per hour?
Answer:
Answers
Let +p+ = price per gallon in dollars
Plot +g+ on the vertical axis
Plot +p+ on the horizontal
use the point slope formula
+%28+g+-+800+%29+%2F+%28+p+-+2.4+%29+=+%28+900+-+800+%29+%2F+%28+2.15+-+2.4+%29+
+%28+g+-+800+%29+%2F+%28+p+-+2.4+%29+=+100+%2F+%28-.25%29+
+%28+g+-+800+%29+%2F+%28+p+-+2.4+%29+=+-400+
+g+-+800+=+-400%2A%28+p+-+2.4+%29+
+g+-+800+=+-400p+%2B+960+
+g+=+-400p+%2B+1760+
--------------------
(a)
+g+=+-400%2A2.35+%2B+1760+
+g+=+-940+%2B+1760+
+g+=+820+
820 gallons/hr would be sold
-----------------------
(b)
+g+=+-400p+%2B+1760+
+1600+=+-400p+%2B+1760+
+400p+=+1760+-+1600+
+400p+=+160+
+p+=+.4+
The price must be $ .40 / gallon to sell 1600 gallons/hr
-----------------------
(c)
(1) +2.15%2A900+=+1935+
Revenue = $ 1,935
(2) +2.4%2A800+=+1920+
Revenue = $ 1,920
(3) +2.35%2A820+=+1927+
Revenue = $ 1,927
+.4%2A1600+=+640+
Revenue = $640
$2.15 / gallon gives the most revenue
4 units 2 units 7 units 3 units what's the area
Answers
Answer:
15 units
Step-by-step explanation:
split the figure into two figures
one with 4x3 and the other with 1x3
then find the area for each and add the areas to get total area
4x3=12
1x3=3
12+3=15
hope this helps have a blessed day :)
Answer:
The answer has to be 168
Step-by-step explanation:
To find the Area you need to multiply all the lengths of each side together.
So 3x4x2x7=168
HOPE THIS HELPS!!!
PLEASE MARK BRAILIEST!!!
Pls Pls Pls Pls PLs PLS helpppp
I'm giving 45 points if you help
Answers
answer and show work and ill give brainliest, Steven has one bag that contains three table-tennis balls numbered 1, 2, and 3. He also has a second bag that contains four table-tennis balls lettered A, B, C, and D.
Answers
Answer:
B
Step-by-step explanation:
Assuming Part A is the situation where the bags aren't merged, the probability of drawing a "1" followed by a "B" is (1/3)(1/4) or 1/12. This is because you have a 1/3 chance of getting a "1" and a 1/4 chance of getting a "B".
Now if we merge the bags, we have a 1/7 chance of getting a "1". We then have a 1/6 chance of getting a "B". This is because after we complete the first draw, the bag only has 6 remaining not 7. This gives us a probability of (1/7)(1/6) or 1/42.
So we know the probability will change so C is wrong. In both scenarios, we draw two balls anyways so A is wrong.
This leaves B, which is supported by the reasoning presented above.
In 2010, 8476 earthquakes
ocurred in the united states
of these 91.4% were minor
tremors with magnitude of
3.9 or less on the Richter
scale. How many minor earth
quakes occurred in the United
States in 2010? Round to
the nearest whole number
Answers
Answer:
7747
Step-by-step explanation:
8476 × 91.4%
=7747
∴ 7747 minor earthquakes occured in 2010
Answer:
Step-by-step explanation:first I don't know
Second I don't know
And finally I don't know
What will be the area of this parallelogram?
Include the appropriate unit in your answer.
Answers
Answer:
13.75 square feet
Step-by-step explanation:
all you have to do to find the area of a parallelogram is base * height
= 2.5 * 5.5
= 13.75 square feet
Answer:
13.75 ft^2
Step-by-step explanation:
I) Substitute equation to find the area
a = hb (area = height x base)
a = 2.5(5.5)
II) Solve:
a = 2.5(5.5)
a = 13.75
The area is 13.75 ft^2.
PLEASE ANSWER CORRECTLY
Answers
Answer:
$76.32
Step-by-step explanation:
First, add up all the costs for everything:
17 + 30 + 25 = 72
Now, we need to add the sales tax. To do this we multiply 72 by 1.06. This is because the sales tax is 6% (the decimal form of 6% is 0.06), and we add it on to the 100% cost (which is 1 in decimal form).
(72)(1.06) = 76.32
Therefore the total cost of everything Walter bought plus the tax rate is $76.32.
I hope this helps!!
- Kay :)