Answer:
289
Step-by-step explanation:
1. if to re-write the given equation, then 13y²-9y-4=0;
2. if to calculate the required discriminant, then:
D=81+13*4*4=208+81=289.
Answer:
289
Step-by-step explanation:
[tex]13y^2-9y-4 = 0\\[/tex]
D = [tex]b^2-4ac[/tex]
Wherein,
b = 9
a = 13
c = -4
[tex]D = 9^2-(4*13*-4)\\= 289[/tex]
Answer question 11 for me.
Answer:
that they both are 20
Step-by-step explanation:
Answer: p and q are both equal to 20
Step-by-step explanation:
40 / 2 = p, so p = 20
100 / 5 = q, so q = 20
Emily bought some ice cream cones which cost $24. she paid $m and got back $6 of change. Find m
Answer:
m = 30
Step-by-step explanation:
total = 24
m = amount paid
change = 6
m - 6 = 24
+6 +6
m = 30
Hope this helped! Have a nice rest of ur day! Plz mark as brainliest!!!
-Lil G
if the sum of two expressions is 3x+5 and one expression is 5x-7 what is the other expression
Answer:
-2x + 12
Step-by-step explanation:
If we call our other expression y, we can set up an equation tying together 3x + 5, y, and 5x - 7:
[tex](5x-7)+y=3x+5[/tex]
Solving for y by subtracting 5x - 7 from both sides will get us the expression we're looking for:
[tex]y=3x+5-(5x-7)\\y=3x+5-5x+7\\y=-2x+12[/tex]
So the other expression in the sum is -2x + 12.
A medical syringe is marked using the tenths place. If a dosage of medicine prescribed is 1.325 ml,
what is the amount given rounded to the tenths place ?
Answer:
You must round down. the answer is 1.3 ml
A student received a coupon for 20% off the total purchase price at a clothing store. Let y be the
original price of the purchase. Use the expression below for the new price of the purchase. Write
an equivalent expression by combining like terms.
y-0.2y
Answer: 0.8y
Step-by-step explanation:
Original price of purchase = y
Since the received a coupon for 20% off the total purchase price at a clothing store, the expression for the new price will be:
= y - (20% × y)
= y - (0.2 × y)
= y - 0.2y
= 0.8y
The equivalent expression is 0.8y.
This Stem-and-Leaf Plot shows the number of minutes a group of students spent talking on the phone on a particular day. If 33 and 35 are added to the data, which statement will be true?
A. The median will change; the mode will stay the same.
B. The mode will change; the median will stay the same.
C. The median and the mode will both change.
D. The median and the mode will stay the same.
Answer: correct answer is a
Step-by-step explanation:
Stem and leaf diagram
Find the area of the figure
Answer:
236.6 Yd2
Step-by-step explanation:
just truce me
Identify the requirements for a discrete probability distribution. Choose the correct answer below. A. There must be a fixed number of independent trials. There must be two mutually exclusive outcomes for each trial with a constant probability of success. B. The sum of the probabilities must equal one. Each probability must be between zero and one inclusive. C. Each probability must be between zero and one inclusive. D. The sum of the probabilities must equal one.
Answer:
B. The sum of the probabilities must equal one. Each probability must be between zero and one inclusive
Step-by-step explanation:
The discrete probability distribution is a distribution in which the random variable would be considered as countable i.e. non-negative digits also it would be presented in table form
So according to the given situation, the option b is correct as their sum would be equivalent to zero also each probability should be lies between zero and one inclusive
ILL GIVE YOU BRAINLIEST
Answer:
I believe that u are right with the answer A: 302 in.²
I NEED HELP AND FAST WITH A PROBLEM
Answer:
Volume ≈ 15.63 ft³
Step-by-step explanation:
V=a³=2.5³=15.625ft³
Hope this helpz
Which represents the inverse of the function f(x) = 4x?
O h(x) = X + 4
O h(x) = x -4
O h(x) = 3/4x
• h(x) = 1/4x
Answer:
y=1/4x
Step-by-step explanation:
y=4x
x=4y
y=x/4
y=1/4x
Calculus I: Find the smaller and larger x value.
Answers:
Smaller x value = -3Larger x value = -1===============================================================
Explanation:
Apply the derivative (see attached image for the steps)
You should get [tex]\frac{dy}{dx} = -\frac{1}{(x+2)^{2}}\\\\[/tex]
The line y = x is really y = 1x+0. We see that it's in the form y = mx+b with m = 1 as the slope. The negative reciprocal of this is m = -1, which is the perpendicular slope. As a rule, any two perpendicular lines always have their slopes multiply to -1 as long as neither line is vertical or horizontal.
So we want the derivative we just found to be set equal to -1, that way we have the x value lead to this derivative slope value.
We want dy/dx = -1
In short, the equation we need to solve is [tex]-\frac{1}{(x+2)^{2}} = -1\\\\[/tex]
Let's solve for x
[tex]-\frac{1}{(x+2)^{2}} = -1\\\\\frac{1}{(x+2)^{2}} = 1\\\\(x+2)^{2} = 1\\\\x+2 = \pm\sqrt{1}\\\\x+2 = \pm1\\\\x+2 = 1 \ \text{ or } \ x+2 = -1\\\\x = -2+1 \ \text{ or } \ x = -2-1\\\\x = -1 \ \text{ or } \ x = -3\\\\[/tex]
The smaller x value is -3 while the larger x value is x = -1.
What is the expression?
Answer:
4.5x + 3.5
Step-by-step explanation:
Area = L x W so:
A = 4.5(x + 3)
A = 4.5x + 3.5
when 3 times a number is added to it's square the total is 18
Answer:
x(the number)=3
Step-by-step explanation:
3×3+3squared = 18
Answer:
3x + x^2 = 18
x^2 + 3x - 18 = 0
(x + 6)(x - 3) = 0
x + 6 = 0
x = -6
x - 3 = 0
x = 3
Which point does not lie on the graph of x + 7y = 7?
E
B
AACB = ADCE, AB = 8 and AC = 6
DE = [ ? ]
Answer:
88888888888888888888888888
Step-by-step explanation:
8
If you graphed the equation, y = -6, what kind of line would you create?
Can someone help me?
1. 4(1/2x + 2) = 6
Answer:
4(1/2x + 2) = 6
1/2 x+2=6/4
1/2 x=3/2-2
1/2 x=(3-4)/2
x=-1/2×2=-1 is your answer
Answer:
-1 is your answer :)
Step-by-step explanation:
4(1/2x + 2) = 6
1/2 x+2=6/4
1/2 x=3/2-2
1/2 x=(3-4)/2
x=-1/2×2= -1
By what percent will a fraction increase is decreased by 10% and its denominator is decreased by 50%
Answer:
Let's assume the fraction is 1/1
decreasing 1 by 10% = .9
decreasing 1 by 50% = .5
So the fraction becomes .9/.5 = 1.8
So its value increases by 180%
Step-by-step explanation:
Your parents car initially costs $18,000 and it depreciates at a rate of 12% a year. How much will the car be worth after 5 years.
Using this equation, when your parents give you the car when the value drops below $2,000, in what year of depreciation will you become the owner?
Answer:
Step-by-step explanation:
value after five years = $18,000×(1-0.12)⁵ = 18,000×0.88⁵ = $9,499.17
:::::
The value drops below $2,000 in the 17th year.
Terrence buys a new car for $20,000. The value of the car depreciates by 15% each year. If f(x) represents the value of the car after x years, which function represents the car’s value?
f(x) = 20,000(0.85)x
f(x) = 20,000(0.15)x
f(x) = 20,000(1.15)x
f(x) = 20,000(1.85)x
Answer:
f(x) = 20,000(0.85)^x
Step-by-step explanation:
Given data
Cost of car P= $20,000
rate of depreciation r= 15%
Let us apply the depreciation formula
f(x) = P(1-r)^t
substitute
f(x) = 20000(1-0.15)^x
f(x) = 20000(0.85)^x
Therefore the correct expression is option 1
f(x) = 20,000(0.85)^x
A concession stand sold pizza slices, ice cream cones, and tacos at a basketball game. Pizza slices were sold for $2.75, ice cream cones were sold for $2.25, and tacos were sold for $1.75. The total number of pizza slices, ice cream cones, and tacos sold was 121, and the total amount of money from these items was $260.75. If $87.50 was made just from selling tacos, how many ice cream cones were sold?
I need help!!!please tell me the answer!!!
the last option is correctttttt
Spraying plants with cornmeal juice is a natural way to prevent fungal growth on the plants. It is made by soaking cornmeal in water, using two cups of cornmeal for every eight gallons of water. Complete the ratio table by dropping and dragging the numbers in the correct locations. You will not use every option given.
DRAG & DROP THE ANSWER
12
18
32
40
36
42
16
Answer:
2-18
4-16
8-24
9-36
10-40
Step-by-step explanation:
they are all multiples of 4, because every cup of cornmeal is 4 gallons of water
Answer:
2:8
4: __
8:32
9:36
10:40
Step-by-step explanation:
I got the same question too but for 4:__ I got it wrong all I know is that it wouldn't be 12! Sorry that I couldn't finish all of it!!
what's 1+1 plese my mom is going to tak away my tablet and I'll even mark yo branlyist
Answer:
2
Step-by-step explanation:
Imagine you have 1 cookie, and then you have another cookie.
1 cookie and then another cookie is 2 cookies.
Marking brainliest!!
What should I put for the second question? I am confused. HELPP
if other experts state the same thing in their own paper or document.
Hi please help me i will mark as brainiest just please help!
Answer:
B
Step-by-step explanation:
Kahlil wants it to be more than 10 seconds long, and his friend wants it 5 seconds longer than that. So it has to be at least 10 + 5 seconds long or 15 seconds. B is the only option with >15, and all the possible track lengths below satisfy the inequality.
Part A
Monica estimates the recipe makes about 5 cups of fruit salad,
Which explanation describes whether Monica's estimate is reasonable?
Not reasonable. Four fractions cannot equal more than 4 cups.
Not reasonable. The whole numbers add up to 3 so the total sum
cannot be 5 cups
Reasonable. The grapes and apples is about 2 cups and pears and
oranges is exactly 3 cups.
Reasonable. The pears and apples is about 3 cups and the grapes
and oranges is exactly 2 cups.
PLAY
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Part B
What is the exact amount of fruit salad in cups?
cups
o
Enter your answer as a fraction or a mixed number.
What is the exact amount of fruit salad is in cups?
Answer:
answer is c
Step-by-step explanation:
oranges in Paris are three cups and grapes and apples are about two cups. (1 11/12 cups to be exact)
the exact amount of five portions of fruit salad and fraction form is 59 / 60
what is 261.8 rounded to the nearest tenth
is it 261.80?
