Answer:
Step-by-step explanation:
For reference the quadratic equations looks like this
(-b±[tex]\sqrt{b^2-(4*a*c)}\\[/tex])/2a
Amy's mistake (and solution)
We can see that when amy mulitplied c she wrote 20 instead of -20 (in step 1). She can fix this by writing (4*1*-20) instead
Richard's mistake (and solution)
When richard messed up on step 5 when he wrote (6-2i)/2. You only would write the i if the negative was in the radical (but in this case it's outside). You would fix this by just getting rid of the i entirely (and keeping the 2)
I'm not really too sure how you would do three but I'll give it a shot anyways
our equation will look like this: x²+2x
which means our quadratic equation would look like this
[tex]\frac{-2+/-\sqrt{2^2-4*1*0}}{2}\\=\\\\\frac{-2+/-(2)}{2}\\\\\\= -1+/-(1)\\\\-1+1=0\\-1-1=-2[/tex]
When I write +/- I mean plus or minus giving us -2 and 0 as our solutions
Which is greater 2/11 or 3/12
Answer:
3/12
Step-by-step explanation:
Answer:
3/12
Step-by-step explanation:
All you have to do is make your 2 fractions into decimals. To do that divide the numerator into the denominator. (Top number into the bottom number)
3/12--> 0.25
2/11--> 0.18 (rounded)
I hope this helps, and have a great day!
Warm-Up
82
80
1. The value of y
varies directly with
X. When y = 6.5, X
= 4. What is the
value of y when x
is 12?
78
Temperature (°F)
76
g
74
72
2. W
inter
Answer:
[tex]y=2\frac{1}{6}[/tex] or [tex]\frac{13}{6}[/tex]
Step-by-step explanation:
We know that [tex]x[/tex] and [tex]y[/tex] are directly proportional. Therefore, using the given information, we can set up the following proportion:
[tex]\frac{6.5}{12}=\frac{y}{4}[/tex]
Solving for [tex]y[/tex], we get:
[tex]\frac{6.5}{12}=\frac{y}{4}[/tex]
[tex]12*y=6.5*4[/tex] (Cross-Products Property)
[tex]12y=26[/tex] (Simplify)
[tex]\frac{12y}{12} =\frac{26}{12}[/tex] (Divide both sides of the equation by [tex]12[/tex] to get rid of [tex]y[/tex]'s coefficient)
[tex]y=2\frac{1}{6}[/tex] or [tex]\frac{13}{6}[/tex] (Simplify)
Hope this helps!
-24 1/2 as a decimal number
Answer and Explanation
__________________________________________________________
-24.5__________________________________________________________
The answer is -24.5 because...
[tex]\frac{1}{2}[/tex] = [tex]0.5[/tex]
and
[tex]-24[/tex] = [tex]-24[/tex]
__________________________________________________________
[tex]-24[/tex] [tex]+[/tex] [tex]0.5[/tex] = -24.5
__________________________________________________________
Hope this helps! :)
__________________________________________________________
Daniel is 12
3
4
years old. Carl is 1
3
8
years younger than Daniel and Jane is 1
1
5
years younger than Carl. How old is Jane?
tiene 981 años
Step-by-step explanation:
a cake recipe calls for 525 grams of flour. about how many pounds of flour do you need?
Answer:
1
Step-by-step explanation:
1g -> 0.00220462 pounds
525g ->1.15743 pounds
≈ 1 pounds
HELP PLEASE! i need an answer by the end of the night
Answer:
Step-by-step explanation:
The going up is potential energy, the going down is kinetic energy. Not sure the two different energy conversions is asking.
what is 1/2+p=-3 i need help
Answr:
p=−7/2
Step-by-step explanation:
Simplify both sides of the equation.
p+
1
2
=−3
Step 2: Subtract 1/2 from both sides.
p+
1
2
−
1
2
=−3−
1
2
p=
−7
2
Mary wants to do a cheesecake. She needs 4 1/2 cups of sweet cream. She knows that 1
cup = 8 ounces How many ounces does she need?
Plsss 50 points!?
Answer:
36 ounces
Step-by-step explanation:
If 1 cup equals 8 ounces, you would multiply 4 1/2 by 8. 8 x 4 is 32 (ounces), and half of 8 is 4, so 4 ounces. You would then add 32 and 4 together to get your answer. Hope this helps!!
Answer:
She needs 36 ounces.
Step-by-step explanation:
4 1/2=9/2
1/8=(9/2)/x
cross product
8(9/2)=1*x
72/2=x
x=36
Write all the names of the quadrilateral shown.
???
Answer:
Rhombus
Step-by-step explanation:
What are the values that make h > -8 true?
(Multiple Choice)
-16, -9, -8.001, -7.99, -5, -13, -8.1, -8, -7.9, -3, -11, -8.01, -7.999, -7, 0
Answer:
0
Step-by-step explanation:
Horatio has 230 dollars to be used only on his car. He wishes to save 160 of this money and spend $24.95 on an oil change. Horatio knows that gas costs $3.81 per gallon. Which of the following shows how many gallons of gas (g) he could buy? 3 needed.
A. g ≤ 11.82
B. g ≤ 60.37
C. 3.81 ≤ 45.05
D. 3.81 ≤ 230 + 160 + 24.95
E. 160 + 24.95 + 3.81 ≤ 230
F. 184.95 + 3.81g ≤ 45.05
I'd be greatly thankful if you told me the answers!
Answer:
g<_11.82
3.81<_230
160+24.95
so, ade
Step-by-step explanation:
Ron made 3 pitchers of lemonade to sell at a lemonade stand. The cost of making the lemonade is 50 cents per pitcher of lemonade.
He sold each cup of lemonade for 15 cents, and he sold a total of 36 cups of lemonade.
How much money did Ron make selling lemonade after paying out the cost of making the lemonade?
Answer:
3.90 I think.
Step-by-step explanation:
first, 15×36. then subtract 50 three times.
Answer:
$3.90
Step-by-step explanation:
The cost of making them all is 1.50 subtracted from the profit he made
Help with this it’s due today.!!!!
Answer:
Right answer is 10 I hope it's helps you
if f(x)=x^2-3x-4 and g(x)=x^2+x, what is (f+g)(x)?
Answer:
Step-by-step explanation:
Set up the composite result function.
f
(
g
(
x
)
)
Evaluate
f
(
g
(
x
)
)
by substituting in the value of
g
into
f
.
f
(
x
+
2
)
=
3
(
x
+
2
)
−
4
Simplify each term.
Tap for more steps...
f
(
x
+
2
)
=
3
x
+
6
−
4
Subtract
4
from
6
.
f
(
x
+
2
)
=
3
x
+
2
Function 1
{(2, -4), (4, -3), (6, -1), (8,3)}
Linear
Not linear ?
Answer:
It should be Linear?
Step-by-step explanation:
Find the slope of the line containing the pair of points (-1,-18) and (-13,-19)
Answer:
Slope: 3.083333333
Step-by-step explanation:
please help and explain how to solve
Answer:
45
Step-by-step explanation:
25 ÷ 45 = 0.555 x 81 = 45
Answer:
A 45-foot tree will cast a 81-foot shadow.
Step-by-step explanation:
Set up a proportion.
I'll set mine up like this:
[tex]\frac{Height of Tree}{Shadow}=\frac{Height of Tree}{Shadow}[/tex]
Insert the values given then solve for the unknown (t).
[tex]\frac{25}{45}=\frac{t}{81}[/tex]
[tex](81)\frac{25}{45}=\frac{t}{81}(81)[/tex]
[tex]45=t[/tex]
The local movie theater wants to increase ticket prices by 37% to keep up
with rising costs. The current price of a ticket is $8. What will the new ticket price
pe after the 37% increase (to the nearest cent)? Show your work.
Answer:
$10.96
Step-by-step explanation:
8 * 1.37 = $10.96
Double check the work
8x .37 = 2.96
8+2.96 = 10.96
Unit rate 5 breaks in 8 hours
You are finding the SLOPE!! Please answer all of these! I will mark brainliest^^
m = 1/2
m = -1/5
m=9
m= 1
m = 4/5
m= -5/4
Hope I helped ~~Laurel
Jackson's mom prepares 3/4 of a pound of fudge for his class Valentine's Day party. Only 1/3 of the fudge is eaten. How much of a pound of fudge is eaten?
You buy two shirts online that cost x dollars each. The total which includes a $10 shipping fee is $39.98. Which equation can you use to find the price of the shirt?
A. 2x = 39.98
B. X + 10 = 39.88
C. 2x +10 = 39.88
D. 2x+10x=39.88
Answer:
C. 2x + 10 = 39.88
Step-by-step explanation:
2x will give you the price of the 2 shirts and you have to add the fee of $10 to get the total of $39.88
what is the area of a rectangle with a length of 21 feet and a width of 12 feet?
Х
3х+8
Find the value of x
Answer:
x=2[tex]\frac{2}{3}[/tex]
Step-by-step explanation:
divide both size by 3
⇒[tex]\frac{3x}{3}[/tex]=[tex]\frac{8}{3}[/tex]
3 will cancel 3x then x will stand on it own
x=[tex]\frac{8}{3}[/tex]
3 will divide 8
x=2[tex]\frac{2}{3}[/tex]
Alisha buys 6 boxes of peanut butter granola bars and 6 boxes of cinnamon granola bars. Let p represent the number of peanut butter granola bars and c represent the number of cinnamon granola bars. Jaira and Emma each write an expression that represents the total number of granola bars Alisha bought.
Jaira
6p + 6c
Emma
6(p + c)
Are the expressions equivalent?
Answer:
Yes.
Step-by-step explanation:
Eric is purchasing Valentine's gifts for all his friends he buys each of his friends either candy bar for 1.50 or stuffed animal for $7 how much money does Eric spend if he purchased 13 candy bars and 4 stuffed animals
WILL GIVE BRAINLIEST!
Consider the following.
twelve times the difference between a number and fifty-five
Translate into a variable expression. (Use x for your variable. Do not simplify.)
You invest $4000 into an account that compounds interest on a quarterly basis at 3%. how much money will you have after 5 years? Compound interest formula: A = P(1+r/n)^(nt)
Answer:
26666.6
Step-by-step explanation:
So sorry if this is wrong i tried
The amount after 5 years is $4,644.74.
What is compound interest?It is the interest we earned on the interest.
The formula for the amount earned with compound interest after n years is given as:
A = P[tex](1 + r/n)^{nt}[/tex]
P = principal
R = rate
t = time in years
n = number of times compounded in a year.
We have,
P = $4000
n = 4
r = 3%
t = 5 years
A = 4000 [tex](1 + 0.03/4)^{20}[/tex]
A = 4000 x [tex]1.0075^{20}[/tex]
A = $4,644.74
Thus,
The amount after 5 years is $4,644.74.
Learn more about compound interest here:
https://brainly.com/question/13155407
#SPJ2
Delilah works at RaceTrac for $8 an hour. Which equation best represents this situation?
y = x
y = 8x
y = 4x
y = 16x
State the slope and the y-intercept in each equation. Then graph each linear equation. Be sure to fill out the entire graph and connect the points!