Answer:
x = - 1
Step-by-step explanation:
Given a parabola in standard form
y = ax² + bx + c ( a ≠ 0 ) , then the equation of the axis of symmetry is
x = - [tex]\frac{b}{2a}[/tex]
y = - 2x² - 4x - 11 ← is in standard form
with a = - 2 and b = - 4 , thus
x = - [tex]\frac{-4}{-4}[/tex] = - 1
x = - 1 is the equation of the axis of symmetry
To qualify for the car race, Christine needed to drive 100 miles under 43 minutes. She completed the first lap in 412 minutes. At this rate, what will be her total time for the 100-mile qualifying distance?
Answer: 41,200 minutes
Step-by-step explanation: 412 x 100 is 41,200, so she need 41,200 minutes to comeplete the 100-mile drive.
What is 8.05 × 10-5 in standard notation? 0.0000805 0.00000805 805,000 8,050,000
Answer:
0.0000805
Step-by-step explanation:
[tex]8.05*10^{-5}=\frac{8.05}{10^{5}}\\\\=\frac{8.05}{100,000}\\[/tex]
= 0.0000805
Answer:
A
Step-by-step explanation:
Just did the assignment
Find the common ratio for this geometric sequence.
Answer:
i believe it is B.
I could be wrong, D is my second choice. but since (left to right) its decreasing, im 89% sure it is B 1/9.
Choose the equation of the line that is parallel to the y axis
Answer:
X
Step-by-step explanation:
write an equation of the line that is perpendicular to y- 4=2(×-6) and passes through the point (-3,-5)
Answer:
Step-by-step explanation:
Anyone have any idea wut the answer is bec I cant figure it out
Answer:
t=d/r
Step-by-step explanation:
d=rt we take r to d
which is t=d/r
Is it possible to build a triangle with sides of 5,5,10
Answer:
yes
Step-by-step explanation:
its called an isoceles triangle
Answer:
no
Step-by-step explanation:
The third side must be less than the sum of the other two sides
5+5> the third side
10 > third side
Since the third side is 10 we cannot build a triangle
can someone please help me
Answer: No solution
Both tables have slope 2 (y increases two for every increase of 1 in x). First has y intercept 5, second 15 (19=2(2)+b). So our system is
y = 2x + 5
y = 2x + 15
Those are parallel lines, which never meet, so no solution.
What's the answer to this I just need the numbers to these boxes (9th Grade Math)
Answer:
Pennies = 80
Nickels = 160
Step-by-step explanation:
Two equations representing the relation between numbers of pennies and nickels have been given.
0.01p + 0.05n = 8.80 ---------(1)
n = 2p -----(2)
By substituting the value of n from equation (2) in equation (1).
0.01p + 0.05(2p) = 8.80
0.01p + 0.1p = 8.80
0.11p = 8.80
p = [tex]\frac{8.8}{0.11}[/tex]
p = 80
By equation (2)
n = 2×80
n = 160
Please answer correctly !!!! Will mark brianliest !!!!!!!!!
Answer:
(−8x+1)(x+2)
Step-by-step explanation:
Factor −8x2−15x+2
−8x2−15x+2
=(−8x+1)(x+2)
The measure of angle ABD is 105º. The measure of angle ABC is 75º.
What is the measure of angle CBD?
A
75°
B
>C
?
D
1>) 170°
1) 30°
1) 25°
1) 180°
Answer:
The answer is 30
Step-by-step explanation:
It is 30 because if there is 75 and the total needs to be 105 then you have to add 30+75+105! Thats the answer.
I got it right! :)
The CBD angle is 30 degrees.
What is an angle?An angle is formed when two straight lines or rays meet at a common endpoint.
Given that the measure of angle ABD is 105º and the measure of angle ABC is 75º.
According to the given figure, the relation between angles is given by
angle ABD = angle ABC + angle CBD
Let x be the angle CBD then
105 = 75 + x
i.e x = 105 - 75 = 30
Hence the angle CBD is 30°.
To learn more about angle, use the link given below:
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What does (MAD) mean?
Hey!!!
MAD stands for Mean Absolute Deviation.
Explanation:
Mean Absolute Deviation (MAD) of a data set is the average distance between each data value and the mean.
Hope it helps..
Good luck on your assignment
Answer:
(MAD) is an abbreviation of mean absolute deviation.
** FOR 30 POINTS**
what is the height of the triangular prism shown above?
A student earned a grade of 80% on a math test that had 20 problems. How many problems on this test did the student answer correctly?What is the value of (0.3)4 ?
Answer: 16 questions
Step-by-step explanation:
To find how many problems the student correctly answered on the test, we can turn 80% into a fraction.
[tex]\frac{80}{100} =\frac{16}{20}[/tex]
The student answered 16 questions correctly.
The value of (0.3)^4 is 0.0081.
Unless you mean 0.3*4, then it is 1.2.
square roof of Sixty?
Answer:
your anwser is 7.74596669241
Answer:
[tex]\sqrt{60} = 7.74596669241[/tex]
Step-by-step explanation:
Emma buys a house for £201 500
She sells the house for £213 590
What is the percentage profit Emma makes.
Answer:
6%
Step-by-step explanation:
[tex]\frac{213590 - 201500}{201500} = \frac{12090}{201500} = 6[/tex]
The percentage profit Emma makes. if, Emma buys a house for £201 500, and She sells the house for £213 590 is 6%.
What is percentage?As it is clear from the term per cent means measuring anything per hundred. For example, you get marks per 100 marks, so you get the percentage.
Given:
Emma buys a house for £201 500,
She sells the house for £213 590,
Calculate the profit as shown below,
Profit = Selling price of the house - Cost of house
Profit = 213 590 - 201 500
Profit = £12090
Calculate the percentage profit as shown below,
The percentage profit = Profit / Cost of house × 100
The percentage profit = 12090 / 201500 × 100
The percentage profit = 0.06 × 100
The percentage profit = 6%
To know more about percentages:
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Please answer CORRECTLY !!!!!!!!! Will mark brainliest !!!!!!!!!
Answer:
smaller x = -2
larger x = 4
vertex: (1, -9)
Step-by-step explanation:
To find the zeros of the function, set each value in parenthesis to 0 separately.
Smaller x:
(x+2) = 0
x = -2
Larger x:
(x-4) = 0
x = 4
To find the vertex of the parabola you need to find the x value between the zeros.
[tex]\frac{4 + (-2)}{2}[/tex] = [tex]\frac{2}{2}[/tex] = 1
Plug 1 in for x in the equation.
f(x) = ((1) + 2)((1) - 4)
f(x) = (3)(-3)
f(x) = -9
When x = 1, f(x) = -9, so the vertex of the parabola is at (1, -9).
You put $600 in a savings account. The account earns 6% simple interest per year. a. What is the interest earned after 10 years? The interest earned is $ after 10 years. b. What is the balance after 10 years? The balance is $ after 10 years.
pls ill mark brainliest
Answer:
Interest =$360
Balance =$960
Step-by-step explanation:
Interest = Principal *Rate * Time
= [tex]\frac{600 * 6 * 10}{100}[/tex]
= $360
∴ The balance will be $600 + 360 = $960
Answer:
the answer is $960
Step-by-step explanation:
What is the approximate volume of a cone with a height of 9 ft and radius of 3 ft? Use 3.14 to approximate pi, and express your final answer to the nearest hundredth. Enter your answer as a decimal in the box. [ ] ft³
Answer:
84.78 ft^3Solution,
Radius=3 ft
Height=9 ft
Volume of cone=?
Now,
[tex]volume \: of \: cone \\ = \frac{1}{2}\pi \: {r}^{2} h \\ = \frac{1}{2} \times 3.14 \times {3}^{2} \times 9 \\ = \frac{1}{2} \times 3.14 \times 9 \times 9 \\ = 84.78 \: {ft}^{3} [/tex]
hope this helps...
Good luck on your assignment
Answer:
V = 84.82 ft³
Step-by-step explanation:
Volume of Cone = [tex]\pi r^2\frac{h}{3}[/tex]
Where r = 3, h = 9
=> V = [tex](3.14)(3)^2(\frac{9}{3} )[/tex]
=> V = (3.14)(9)(3)
=> V = 84.82 ft³
A trapezoid has an area of 20 cm2 and a height z cm. The lengths of the parallel sides are (2z + 3) cm and (6z – 1) cm. Find the height, z, of the trapezoid. In your final answer, include all of the formulas and calculations necessary.
Answer: 2.11cm
Step-by-step explanation:
Given the following :
The lengths of the parallel sides are (2z + 3) cm and (6z – 1) cm
The area of trapezoid is calculated using the formula:
1/2(a + b) × h
Where ;
a = Length of side 1
b = length of side 2
h = height
Take a = (2z + 3) and b = (6z – 1), h = z
Therefore ;
1/2 (2z + 3 + 6z - 1) × z
Opening the bracket
(z + 1.5 + 3z - 0.5) × z
(4z + 1 ) × z = 20cm^2
4z^2 + z = 20cm^2
Using Quadratic formula:
4z^2 + z - 20 = 0
a = 4, b = 1, c = - 20
(-b±√b^2 -4ac) / 2a
Z = 2.11 or - 2.364
z cannot be negative, therefore,
Z = 2.11 cm
what is 3n+2(−2n−1)
Answer:
-n-2
Step-by-step explanation:
First, you need to distribute the 2 on the -2n and -1. So multiply the 2 by -2n and -1. You get = -4n-2.
You still have the 3n, so the equation will now look like: 3n-4n-2.
Combine like terms. 3n-4n= -1n or just -n.
Now you have -n-2.
If there are 25 students in a math class in which 16 of them are male . If there are 1500 students in the school how many of them are male and how many other or females
The four partners in a business decide to split the profits of their company in the ratio 2:5:5:7. If the profit of one year is 570000 soms then what is the largest amount of profit received by one of the four partners?
Answer: $210000
Step-by-step explanation:
2:5:5:7
you add the numbers that are in the ratio
2+5+5+7= 19
Then you divide each four of the profits by the total profit
2/19 x 570000 = $60000
5/19 x 570000 = $150000
7/19 x 570000 = $210000
Therefore the largest amount of profit recieved by one of the four partners is $210000
Add.
6x -5x +3
+
3x2 + 7 x-8
A. 9x2 - 2x + 5
B. 9x2 + 2x-5
C. 9x2 + 12x-5
D. 9x2 + 2x + 11
If you flip a coin and roll a
6
66-sided die, what is the probability that you will flip a tails and roll at least a
2
22?
Answer: 1/12
Step-by-step explanation:
Your outcome, 2H, divided by the total size of the output set. Thus gives you probability 1/12
Multiply the probability of Heads P(x=H | coin) = 1/2 . The probability of 2 P(x=2 | Die) = 1/6. Multiply 1/2(1/6) = 1/12.
Answer:
5/12
Step-by-step explanation:
khan
What is the simplified form of the following expression? ^4 sqrt 16x^8y^12z^4
Answer:
the right answer is the third one
Answer:
its the second one
Step-by-step explanation:
took the test
Raj writes a polynomial expression in standard form using one variable, a, that has 4 terms and is degree 5.
Nicole writes a polynomial expression in standard form using one variable, a, that has 3 terms and is degree 2.
Raj and Nicole’s polynomial expressions are added to create a sum, written in standard form.
What can you determine about the degree of the sum?
The sum will be degree
Answer:
the answer is D
Step-by-step explanation:
6(5r-11) - (5 - r) A: 30r - 71 B: 31r - 71 C: 29r - 71 D: 31r- 61 please help asap
Answer:
31r-71
Step-by-step explanation:
=> 6(5r-11)-(5-r)
=> 30r-66-5+r
=> 30r+r-66-5
=> 31r-71
Answer:
B
Step-by-step explanation:
6(5r-11) - (5 - r)
Expand.
30r-66 - 5 + r
Rearrange.
30r + r - 66 - 5
31r - 66 - 5
Factor negative sign.
31r - (66+5)
Add.
31r - (71)
WILL GIVE BRAINLIEST TO ANYONE WHO ANSWERS!!
Quadrilateral OPQR is inscribed inside a circle as shown below. What is the measure of angle P? You must show all work and calculations to receive credit. (10 points) Circle N is shown with an inscribed quadrilateral labeled OPQR. O is labeled 2x degrees. P is labeled y degrees. Q is labeled 2
Answer:
The measure of angle P is 43°
Step-by-step explanation:
If a quadrilateral is inscribed inside a circle, the sum of opposite angles are always equal to 180 degrees.
The angle POR is opposite to the angle PQR, and the angle OPQ is opposite to the angle ORQ.
So we have that:
mOPQ + mORQ = 180°
y + 3y + 8 = 180
4y = 172
y = 43°
So the measure of angle P is 43°.
Fifteen percent of the students at Central High take Spanish, 12% take French, and 4% take both. If a student is selected at random, what is the probability that the student takes Spanish or French?
This question is incomplete because it lacks the appropriate options
Complete Question
Fifteen percent of the students at Central High take Spanish, 12% take French, and 4% take both. If a student is selected at random, what is the
probability that the student takes Spanish or French?
A 31%
B. 27%
C. 23%
D. 19%
Answer:
C. 23%
Step-by-step explanation:
At Central High
From the question, we are told that:
Spanish = 15%
French = 12%
Spanish and French = 4%
French or Spanish = unknown
Therefore, the probability that a student at random takes Spanish or French
= P(Spanish) + P(French) - P(Spanish and French)
= 15% + 12% - 4%
= 27% - 4%
= 23%