Answer:
hi is this correct please let me know
Step-by-step explanation:
4x
4
+91x
2
−225=0
Substitute t for x
2
.
4t
2
+91t−225=0
All equations of the form ax
2
+bx+c=0 can be solved using the quadratic formula:
2a
−b±
b
2
−4ac
. Substitute 4 for a, 91 for b, and −225 for c in the quadratic formula.
t=
2×4
−91±
91
2
−4×4(−225)
Do the calculations.
t=
8
−91±109
Solve the equation t=
8
−91±109
when ± is plus and when ± is minus.
t= 49
t=−25
resouva a equação 7×+8=4×-10
Answer:
x = -6Step-by-step explanation:
7x+8=4x-10
3x = -18
x = -6
-------------------
check
7 * (-6) + 8 = 4 * (-6) - 10
-34 = -34
the answer is good
or Of the 18 clients at Alana's salon, 8 of them have brown hair. What is the probability that a randomly selected client at Alana's salon has brown hair? Write your answer as a fraction or whole number. P(brown) =
Answer:
8/18 = 44.44%
NEED HELP QUICK
Find the height of a cone with a diameter of 12 m whose volume is 565 m3
Use 3.14 for n and round your answer to the nearest meter.
A. 15 m
B. 47 m
C. 5 m
D. 8 m
Answer:
15m
Step-by-step explanation:
volume of a cone = 1/3 πr³h
1/3 x 3.14 x (12/2)² x h = 565
37.68h= 565
h= 15m
Need answer fast please. Which line is perpendicular to y = x + 2 and passes through (4,-1)?
y = -x+1
y = -x + 3
y = -x + 2
y = -x +4
Answer:
C. y = -x + 3
Step-by-step explanation:
y = x + 2
Find perpendicular slope (opposite reciprocal):
x/1 --> -1/x or -x
Convert to point-slope form:
y - (-1) = -1 (x - 4)
y + 1 = -1x + 4
y = -x + 3
Create a word problem that represents the equation of: 3x - 15 = 6
Answer:
x= 7
Step-by-step explanation:
3x -15 =6
+15 +15
3× = 21
3/21
× = 7
The seller wants to take $185,000 on the sale of his house after paying the commission of 6%. How much must the selling price be?
Answer:
196808.5106
Step-by-step explanation:
the seller will take 94% from the selling price and pay 6% to the commission, and he wants to take 185000 dollars
let the price = x
then x * 94% = 185000
Solving for x you get the answer
helllllppppppp help help
Answer:
1. 2
2. 8
3. 1.5
4. 62.83185
5. 18.85
6. 87.96
7. 12.57
8. 1256.64
9. 63.62
10. Half
11. perimeter
12. not sure
Step-by-step explanation:
Factor:
a^2 +4a+5
Can Include imaginary numbers
so i get 17x6 and i got102 but on top i got a 4 how do i get the number on top i cant past my lessons cause of me not knowing how to get the number
At Trendy Tailor Boutique's annual end-of-season sale, every necktie in the
shop gets marked down. Will purchased 7 neckties during the sale. Each
necktie cost $8 less than its full price. He paid a total of $147.
Which equation can you use to find f, the cost of each necktie at full price?
By direct calculation, we will see that the full price of each necktie is $29.
How to find the complete price of each necktie?
Let's say that the full price of each necktie is f.
We know that Will each necktie costed $8 less than the full price, so he paid:
(f - $8) for each one.
Knowing that he bought 7 and paid a total of $147, we know that he paid:
$147/7 = $21
Then we need to solve:
(f - $8) = $21
Solving for f, we have:
f = $21 + $8 = $29.
So the full price of each necktie is $29.
If you want to learn more about algebra, you can read:
https://brainly.com/question/4344214
Answer: 1
Step-by-step explanation: 1
The students in Mr. Andersen's science class counted the number of leaves on each of 11 different rose bushes. The data they collected is:
26, 54, 38, 65, 58, 35, 52, 43, 55, 41, 61
Answer:
B. 39
Step-by-step explanation:
The range is the difference between the greatest and smallest numbers.
65 - 26 = 39
you install 618 feet of fencing along the perimeter of a rectangular yard. The width of the yard is 152 feet. What is the length of the yard?
Answer:
The length of the yard is 157 feet
Step-by-step explanation:
P= L+L+W+W or 2L+2W. (P is perimeter, L is length, and W is width.)
Substitute in known values for the variables.
618=2L+2(152)
Multiply.
618=2L+304
Now solve for L by doing inverse operations (subtract).
314=2L
Divide.
L=157
So the yard is 157 feet long.
Dad is getting food ready for my birthday party! Including me, there will be 47 people at the party. Dad is baking cupcakes for us! He can bake 12 cupcakes per batch. How many batches should I tell Dad to make so we can each have 4 cupcakes?
Answer:
4
Step-by-step explanation:
school
ERROR ANALYSIS Describe and correct the error in
graphing and comparing
y= x^2and y = 0.5x^2.
Answer:
The graph should be stretched rather than become narrower.
Step-by-step explanation:
To figure this out, just create some example points.
At x = 0, your y-value will always be 0. But if you were to plug in the value 1, you would get a y-value of 1 in y=x^2, but a value of 0.5 in y=0.5x^2. If you were to plug in a value of 2, you would get a value of 4 in y=x^2, but a value of 2 in y=0.5x^2.
If you continue this pattern for a few more points, then plot them, you will see that adding a coefficient of 0.5 simply stretches the graph
Please family ordered four pizzas that ate 3/4 of each piece of how many pieces did they eat all together
Answer:
3 pizzas
Step-by-step explanation:
[tex] \frac{3}{4} \times 4 = 3[/tex]
A chicken can give 1500 eggs a year. About how many eggs is that a day?
Answer:
4.1 eggs which if you round is 4 eggs a day
Step-by-step explanation:
Answer:
Approximately 4 eggs.
1500 divided by 365 is 4.1095
answer both pls thank u.
1. 3010
2. 3
1. 3010 is divisible by 5 and 10
2. its has to be 513
please find rate of change!!
Answer:
3
Step-by-step explanation:
[tex]\frac{7-(-2)}{5-2} =\frac{9}{3} =3[/tex]
which is bigger 10.1mm or 101cm
Answer:
101cm is bigger
generally values of cm are bigger than mm
1
math
pls help geniuses!!
Answer:
Step-by-step explanation:
I believe it is horizontal bc the y is squared
Evaluate the following expression if a = 3 b = 4 and c = - 5
Thanks
Answer:
( a + b )( c - b )
= ( 3 + 4 )( -5 - 3 )
Step-by-step explanation:
( 3 + 4 )
= 7
(-5 - 3 )
= -8
-
(7)(-8)
= -56
14 gallons of gas for every 15 miles
how many gallons per 1 mile
Answer:
14/15 gallons every mile (0.933333)
Step-by-step explanation:
take the number of gallons of gas, and divide it by how many miles there are.
Larry claims that (14 + 12) × (8 + 12) and (14 × 12) + (8 × 12) are equivalent because they have the same digits and the same operations. Is Larry correct?
Answer:
Larry is wrong
Step-by-step explanation:
Multiplying big numbers will give significantly bigger results then multiplying smaller numbers then adding them. 14 + 12 = 26 & 8 + 12 = 20. 14 x 12 = 68 & 8 x 12 = 96. 96 + 168 is alot less then 26 * 20 so that is why larry is wrong
HELP!!! PLEASE 25 POINTS!!
Answer:
47 dollars
Step-by-step explanation:
add both of the total and then go from there
80.70 + 66.30= 147$ no tax :)
A mapping diagram shows a relation, using arrows, between input and output for the following ordered pairs: (negative 5, 0), (2, negative 3), (negative 1, negative 3), (4, negative 2), (4, 2), (6, negative 1).
Which ordered pair could be removed to make this relation a function?
Answer:
-1
onyl becausse they are basically -3 4 {r84 if u havent got to that yet basically no
Step-by-step explanation:
-3
Are the triangles shown congruent? If so, how do you know?
Answer:
Yes they are
Step-by-step explanation:
You will know if they are the same size on each side
A town has a population of 5000 and grows at 3. 5% every year. What will be the population after 15 years, to the nearest whole number?.
Answer:
26,2500
Step-by-step explanation:
Rewrite using a single positive exponent
7^-6 * 7^2
(The 6 is negative)
Answer:
Step-by-step explanation:
7^2/7^6 = 1/7^(6-2) = 1/7^4
Emily measured a game room and made a scale drawing .The scale drawing was 1 inch = 1 foot .What is the scale factor of the drawing.
Brainliest Oppurtunity, thanks.