25=7.50x Lucy walked 3.333 miles
please help me with this....!!!!!!!!
Answers:
5x^2 + 2 = 4x has no real solutions3x^2 + 24x = -48 has exactly one real solution3(x+5)^2 = -2 has no real solutions4x^2 - 16x = 0 has two real solutions======================================================
Explanation:
We can use the discriminant formula to determine how many (and what type of) roots we have. The term "root" is another word for "solution" or "x intercept". It's the x value that makes y = 0.
Any quadratic is of the form ax^2 + bx + c = 0
The discriminant formula is
d = b^2 - 4ac
which is found underneath the square root in the quadratic formula.
Here are the three possible outcomes
d > 0: we get two different real number solutionsd = 0: we have exactly one real number solutiond < 0: there are no real number solutions (the two solutions are complex or imaginary numbers).With all that in mind, let's find the discriminant of the first equation on the very left.
First we need to get it into standard form ax^2+bx+c = 0
5x^2 + 2 = 4x
5x^2 - 4x + 2 = 0
We see that
a = 5b = -4c = 2Computing the discriminant gets us...
d = b^2 - 4ac
d = (-4)^2 - 4(5)(2)
d = 16 - 40
d = -24
The actual discriminant value itself doesn't matter. All we care about is whether its positive, zero, or negative.
In this case, we get a negative discriminant. So this equation goes to the "no real solutions" column.
-------------------------
Let's move onto the next quadratic
3x^2 + 24x = -48
3x^2 + 24x + 48 = 0
a = 3, b = 24, c = 48
d = b^2 - 4ac
d = 24^2 - 4(3)(48)
d = 0
The discriminant of zero means this equation goes into the "exactly one real solution" category.
-------------------------
For the next equation, we don't need to use the discriminant formula here.
Notice that the right hand side is negative, but the left side is never negative because 3 is positive and (x+5)^2 is never negative. There is no way to have 3(x+5)^2 be negative if we let x be a real number only.
The equation 3(x+5)^2 = -2 goes into "no real solutions" pile.
-------------------------
For the last equation, we have
a = 4, b = -16, c = 0
So,
d = b^2 - 4ac
d = (-16)^2 - 4(4)(0)
d = 256
The result is a positive number, so we have two different solutions.
The discriminant is a perfect square which means we not only have real number solutions, but those solutions are rational numbers. This only works when a,b,c are rational as well.
Please tell me correct and
Answer:
[tex]\frac{1}{4}[/tex] or [tex]0.25[/tex] (they're the same)
Step-by-step explanation:
First Part:
[tex]4^{3} = 64[/tex] [tex]8^{2} = 64[/tex] [tex]2 = 2[/tex] Multiply them together: 64 × 64 × 2 = 8192Second Part:
[tex]2^{7} = 128[/tex] [tex]16^{2} = 256[/tex] Multiply them together: 128 × 256 = 32768Wrap it all up:
8192 ÷ 32768 = 0.25 = 1/4I hope this helps!
Determine the slope from the following order pairs:
(5, 7) (6,3)
Answer:
Step-by-step explanation:
(3-7)/(6-5)= -4/1= -4
a pet store donated 50 pounds of food for adult dogs , puppies and cats to an animal shelter. 19 and 3/4 pounds was adult dog food and 19 7/8 was puppy food. how many pounds of cat food did the store donate?
Answer: 10 3/8
Step-by-step explanation:
= 50 - 19 3/4 - 19 7/8
= 10 3/8
5 in
5 in
4.3 in
14 in
5 in
Can you help me find out the surface area
Answer:
219.6
Step-by-step explanation:
i used omnicalculator
What is the name of this polygon?
rectangle
square
trapezoid
rhombus
Answer:
trapezoid
Step-by-step explanation:
since the figure has only 1 pair of parallel sides then it is a trapezoid
Answer:
rhombus
Step-by-step explanation:
Is 831 divisible by 3?? Yes or no
yes 831 is divisible by 3
One way I know this is because when adding all the digits in the number you get 12 which is divisible by 3
Also if you do divide 831 ÷ 3 it would equal 277
Answer:
yes or true
Step-by-step explanation:
A petting zoo owner is building an enclosure for his farm animals. He needs 353 feet of fencing. The supply store sells fencing in pieces 12 feet long. How many pieces of fencing will he use?
29
29
30
30
Answer:
The answer is 29
Step-by-step explanation:
353/12 =29.41. But you will have to round down to 29 since 29.41 is below 29.5. Thus, the answer is 29.
At top cruising speed, a shark can swim 6 miles in 1/12 hours. A whale can swim 8 miles in 1/6 hours. which animal can swim faster at top cruising speed? How much faster?
Answer: 225 tiles
Step-by-step explanation:
Side of tile = 20 cm = 0.2 m
Side of bathroom = 3 m
Area of tile = 0.04 m²
Area of bathroom = 9 m²
No. of tiles = Ar (bathroom) / Ar (tile)
= 9 / 0.04
= 9 x 25
= 225 tiles
This nonparametric test requires at least ordinal level data. Its purpose is to find out if there is any difference between two sets of related observations and it is used if the assumptions required for the paired t-test cannot be met. Which test is it?
a. ANOVA
b. Rank correlation
c. Kruskal-Wallis
d. None of the above
Answer: Rank correlation
Step-by-step explanation:
hope it helps
Find the area for this square
Answer:
361
Step-by-step explanation:
Multiply length x width to find area. 19 x 19 = 361
can someone help plz
Answer:
the second picture answer is F.56
Step-by-step explanation:
if you add 16 + 40=56
From a hot-air balloon, Daniel measures a 33^{\circ} ∘ angle of depression to a landmark that’s 1579 feet away, measuring horizontally. What’s the balloon’s vertical distance above the ground? Round your answer to the nearest tenth of a foot if necessary.
Check the picture below.
Make sure your calculator is in Degree mode.
Find the length of the side labeled x. Round intermediate values to the nearest tenth. Use the rounded values to calculate the next value. Round your final answer to the nearest tenth.
Answer: 64.0
Step-by-step explanation:
xavier is working two summer jobs, making $14 per hour life guarding and $15 per hour tutoring. Xavier earn at least $170 this week. write an inequality that would represent the possible values for the number of hours life guarding l, and the number of hours tutoring t, that Xavier can work in a given week.
Answer: 14I + 15t ≤ 170
Step-by-step explanation:
Let I be the number of hours life guarding, and t be the number of hours tutoring(stated in the questions). At least is means this number is greater or equal to, which used the symbol ≤.
14I + 15t ≤ 170
how do I solve this please give a step by step or I am taking the comment down please also this will go for 13 points.
Answer:
75
Step-by-step explanation:
angles on a straight line always add up to 180 degrees so 180-105 =75
HELP HAVING BAD DAY A line passes through the points A(–1, 7) and B(1, 3). a Find the slope of the line.
Answer:
the slope is -2
Step-by-step explanation:
if you move the x by 2, you would see a decrease in the y by 4. 2/-4 = -2.
Select the correct answer.
Which function defines ?
A.
B.
C.
D.
Answer:
B
Step-by-step explanation:
(g - f)(x)
= g(x) - f(x)
= log(x - 3) + 6 - ([tex]\sqrt[3]{12x+1}[/tex] + 4)
= log(x - 3) + 6 - [tex]\sqrt[3]{12x+1}[/tex] - 4 ← collect like terms
= log(x - 3) - [tex]\sqrt[3]{12x+1}[/tex] + 2
Value of the given function[tex](g-f)x = log(x-3)-\sqrt[3]{12x+1} +2[/tex].
What is function?" Function is defined as the relation between the given variables is such that every input has exactly one output each."
According to the question,
Given functions are,
[tex]f(x) = \sqrt[3]{12x+1} +4\\\\g(x) = log(x-3) +6[/tex]
Substitute the value in the function (g -f)x we get,
[tex](g-f)x = g(x) -f(x)[/tex]
[tex]= log(x-3) + 6 -( \sqrt[3]{12x+1} +4)\\\\= log(x-3) + 6 -\sqrt[3]{12x+1} -4\\\\= log(x-3) -\sqrt[3]{12x+1} +2[/tex]
Hence, Option(B) is the correct answer.
Learn more about function here
https://brainly.com/question/12431044
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i am a but confused on this question i think the answer is 51 but i’m not sure?? can someone tell me if i’m correct or not. If not please explain! Luv y’all i will mark you brainliest
Answer:
The value of the expression for x=3 is 51
Step-by-step explanation:
Evaluating expressions
To evaluate a given expression, we simply substitute the value of the variables and complete the operations.
The expression to evaluate is:
P=3(2+5x)
We will evaluate for x=3:
P=3(2+5*3)
The product must be done first:
P=3(2+15)=3*17=51
The value of the expression for x=3 is 51
Question 2 of 5
Which transformation was applied to ABCD to transform it to EFGH?
A. Rotation about the origin
ОО
B. Reflection over the yaxis
C. Translation
D. Reflection over the x-axis
Step-by-step explanation:
Reflection about the y-axis followed by a translation left by 2 units
Reflection about the x-axis followed by a translation left by 2 units
Counterclockwise rotation by 90 degrees about the origin followed by a translation right by 2 units
Counterclockwise rotation by 90 degrees about the origin followed by a translation left by 2 units
i hope it can help. thanks
Answer: The answer is C
Step-by-step explanation:
What is the square root of 250,000
Answer:500
Step-by-step explanation:
√250000=500
Answer:
[tex] \sqrt{250000} \\ \sqrt{500} \times \sqrt{500 } \\ { \sqrt{500 } }^{2} \\ 500[/tex]
500 is your answerHope it helps you ☺️☺️Thank you ☺️☺️
In the given figure, prove that ΔΜΝΟ - ΔΟΡΟ.
Answer:
MNO ~ OPQ by AAA (Angle angle angle)
Step-by-step explanation:
1. angle POQ is equal to angle NOM because they are both vertical angles
2. angle OPQ and angle OMN are equal because parallel lines cut by a transversal form congruent alternate interior angles.
3. angle PQO and angle ONM are equal becase of the same reason as reason 2 (parallel lines cut by a transversal form congruent alternate interior angles. )
4. triangles MNO ~ OPQ through AAA (angle angle angle)
Use the diagram to answer the following questions
Pls answer the question attached.
I WILL MARK U BRAINLIST
Answer:
The original price of the toaster is 2000
Step-by-step explanation:
Given: Toaster price = 2240
VAT = 12%
VAT amount = ?(I'll include this one)
Assume the original price be x.
Let the original price be x
Then, x + 12% of x = 2240
x+12/100x x = 2240
100x+12x/ 100= 2240
112x/100=2240
112x = 2240 x 100 ⇒ 224000
x = 224000/112
x = 2000.
So, the original price of toaster = Rs. 2000.
The VAT amount = 2240 - 2000 ⇒ Rs. 240.
The VAT amount is Rs. 240.
Lina has 12 coins in her purse. D of them are dimes and the rest are quarters.
How many quarters does Lina have?
How much money does Lina have in quarters?
Answer:
she has 12 - D quarters.
She has 24 (12-D) cents in quarters
Step-by-step explanation:
You know that the number of coins, and you know the number of dimes - even if the amount is a variable - you can find the amount of quarters with an equation.
If you knew that Lina had 6 dimes instead of D, you would say 12 - 6 and get the number of quarters. You can do the same thing here.
and If you know Lina has 6 quarters, you could find the amount of money in cents by multiplying 6 by 25. You can do that here too, but with variables and an equation.
Answer:
she has 12 - D quarters.
Step-by-step explanation:
Somebody please help with these multi-step equation(s)
Answer:
h = -1
Step-by-step explanation:
-( 4+h) = 3h
Distribute the minus sign
-4 -h = 3h
Add 4 to each side
-4-h+h = 3h+h
-4 = 4h
Divide each side by 4
-4/4 = 4h/4
-1 = h
Fill the blanks:
Given: MOL~ REY
Answer:
1. <R
2. <E
3. <L
4. RE
5. YE
6. 5
-1/2 multiplied by 1/5
Answer:
-1/10 or -0.1
Hope this helps!
Find the area of the figure. (Sides meet at right angles.)
4 in
4 in
5 in
5 in
8 in
B in
3 in
11 in
Answer:
I will help you figure it out. Multiply all the numbers together: And you'll get; 21,120 in.
Hope this helps! Rate Brainiest!
-Aslina
What is -3/8 times (-1/7)?