Answer:
let the numbers be x and y then by given conditions:
x + y = 10 ….. eq 1
and
xy = 9….. eq 2
from eq 2. y = 9/x
put this in eq. 1
x + 9/x = 10
x + 9= 10x
x = 1
now,
xy = 9put value of x
y = 9
Step-by-step explanation:
Hope it is helpful....
Pablo and max's follows a flight pattern approximatley modled by the equation h(t)=-8t^2+16t+2 where h(t)is their rocket's height in meters t seconds after launch. How many seconds was their rocket in the air
Answer: 2.11 s
Step-by-step explanation:
Given
Equation of rockets height is given by
[tex]\Rightarrow h(t)=-8t^2+16+2[/tex]
Height will be zero once the rocket lands on the ground
So, we can write
[tex]\Rightarrow h(t)=0\ \text{or}\ -8t^2+16t+2=0\\\Rightarrow 8t^2-16t-2=0\\\\\Rightarrow t=\dfrac{16\pm \sqrt{(-16)^2-4(8)(-2)}}{2\times 8}\\\\\Rightarrow t=\dfrac{16\pm \sqrt{320}}{16}\\\\\text{Neglecting negative value of t}\\\\\Rightarrow t=\dfrac{16+17.888}{16}=2.11\ s[/tex]
The rocket of height h(t) and modeled equation [tex]\rm h(t)=-8t^2+16t+2\\[/tex]
was in the air for 2.1 seconds.
What is a quadratic equation?The given equation is [tex]\rm h(t)=-8t^2+16t+2\\[/tex], where h(t) is the rocket's height in meters t seconds after launch.
In algebra, a quadratic equation is an equation that can be written in standard form as
[tex]\rm ax^{2}+bx+c=0}[/tex]
where x represents variable, and a, b, and c represent coefficient.
The given equation is
h(t) = 0
[tex]\rm h(t)=-8t^2+16t+2\\h(t)=-8t^2+16t+2 = 0\\[/tex][tex]\rm h(t)=-8t^2+16t+2\\[/tex]
The roots will be
[tex]\rm {\displaystyle t={\frac {-b\pm {\sqrt {b^{2}-4ac}}}{2a}}.}[/tex]
[tex]\rm {\displaystyle t={\frac {16\pm {\sqrt {(-16)^{2}-4\times 8\times 2}}}{16}}.}\\\rm {\displaystyle t={\frac {16\pm {\sqrt{320} }}{16}}}\\\rm {\displaystyle t={\frac{16+17.88}{16}\\[/tex]
Here, we have neglected the negative value of t
t = 2.1 seconds
So, the rocket of height h(t) and modeled equation [tex]\rm h(t)=-8t^2+16t+2\\[/tex]
was in the air for 2.1 seconds.
Here learn more about quadratic equations here:
https://brainly.com/question/2263981
Evaluate rg + 2d when r = 3, g = 5, and d = 2
Answer:
rg+2d= 12
Step-by-step explanation:
(3+5)+2(2)
8+4=12
3√-8/125 Evaluate 3 square root negative 8/125
Answer:
Your answer would be -2/5
Step-by-step explanation:
The value of the given expression is -2/5.
The given expression is [tex]\sqrt[3]{-\frac{8}{125} }[/tex].
How to solve cube roots?In mathematics, the definition of cube root is written as Cube root is the number that needs to be multiplied three times to get the original number. Now, let us look at the cube root formula, where y is the cube root of x. ∛x = y.
Now, [tex]\sqrt[3]{-\frac{8}{125} }[/tex] can be written as [tex]\sqrt[3]{(-\frac{2}{5})^{3} }[/tex].
Here, cube and cube root will get cancelled.
We get -2/5
Therefore, the value of the given expression is -2/5.
To learn more about the cube roots visit:
https://brainly.com/question/3049993.
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Note: Enter your answer and show all the steps that you use to solve this problem in the space provided.
An elevator on the 10th floor goes down 9 floors. Then it goes up 19 floors, down 3, and finally down 12. What floor does it end up on? Write an equation to show how you found your answer.
Answer: it will be subtract try all things possible
Step-by-step explanation:
What is the unit rate of 48 newspapers in 6 piles?
Answer:
[tex] \sf8 \: \frac{newspapers}{plie}\: or\: \text{8 newspapers per pile} [/tex]
Step-by-step explanation:
to understand thisyou need to know about:unit ratelet's solve:according to the question
48newspapers/6piles8 newspapers/plieAnswer:
Solution given:
48 newspaper in 6 pile=48news paper per 6 piles
=48/6=8 news paper per pile
the unit rate of 48 newspapers in 6 piles is 8 news paper per pile
I need help with this equation for math
Answer:
The answer would be B
Step-by-step explanation:
the y-intercept would be a postive 4 and because it's a negative slope, it would rule out all of them except B.
Answer:
y = -1/2x +4
Step-by-step explanation:
We have two points so we can find the slope
m = (y2-y1)/(x2-x1)
= ( 0-4)/(8-0)
= -4/8
= -1/2
We know the y intercept is 4
The slope intercept form of the line is
y = mx+b where m is the slope and b is the y intercept
y = -1/2x +4
Find the measure of the given angles. Show work!!
Answer:
m∠A = 45⁰
m∠B = 75⁰
Step-by-step explanation:
Given question 4;
m∠A = x + 51
m∠B = 81 + x
m∠C = 60⁰
The value of the missing angles can be determined by the finding the value of x first;
m∠A + m∠B + m∠C = 180⁰ (sum of angles in a triangle)
(x + 51) + (81 + x) + 60⁰ = 180
(x + x) + (51 + 81 + 60) = 180
2x + 192 = 180
2x = 180 - 192
2x = -12
x = -12/2
x = -6
Thus, the values of the angles are calculated as follows;
m∠A = x + 51
= -6 + 51
= 45⁰
m∠B = 81 + x
= 81 - 6
= 75⁰
Solve the system using substitution: {y=5x-21 y=-7x+15
Answer:
code lazar
Step-by-step explanation:
PLEASE HURRY
the graph of g(x) =x -5 is a translation of the graph of the parent function 5 units
Answer:
the answer is: 8(x)= 4 -5
Step-by-step explanation:
The graph of parent function and translated function are given below. Therefore, the transformation is shifted down 5 units.
The given function is g(x)=x-5.
What is the translation?A translation in math moves a shape left or right and/or up or down. The translated shapes look exactly the same size as the original shape, and hence the shapes are congruent to each other. They just have been shifted in one or more directions.
Here, parent function is g(x) = x
To find the transformation, compare the function to the parent function and check to see if there is a horizontal or vertical shift, reflection about the x-axis or y-axis, and if there is a vertical stretch.
Shifted down: 5 units
The graph of parent function and translated function are given below. Therefore, the transformation is shifted down 5 units.
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i really need help on this question please
What is the value of the expression shown?
407 - 16) + (-3)
Answer:
388
Step-by-step explanation:
i looked it up
HELP ME ASAPPP I need help on question (b) {geometry}
Answer:
b. 18
Step-by-step explanation:
b is 18 units because it is reflected across that line, and since MC, equals 18 units, then it would be the same for b
c is yes
9 slices from 1 cake =
slices from 2 cakes
Answer:
18?
Step-by-step explanation:
Well uh since it's 2 cakes wouldn't you multiply 9 by 2?
I mean I tried given the little information in the question so
Help please i beg you
Answer:
its easy
use this formula
the right one is the solution of question number 1
Step-by-step explanation:
10
Colin invests £1700 into his bank account.
He receives 10% per year simple interest.
How much will Colin have after 3 years?
Give your answer to the nearest penny where appropriate.
Answer:
£510
Step-by-step explanation:
Simple interest = (principal × rate × time) / 100
Principal = £1700
Rate = 10%
Time = 3 years
Simple interest = (principal × rate × time) / 100
= (1700 × 10 × 3) / 100
= 51,000/100
= 510
Simple interest = £510
PLEASE help Will brainlist 50 points!!!!!!!!!!!!
Answer:
5/6
4/5
6/7
Step-by-step explanation:
Answer:
6 and 7; 1 and 4; 4 and 5
Step-by-step explanation:
a supplementary angle is when two angles added together equal 180 degrees. In other words, if two angles make a straight line when put together, they are supplementary.
What is the value of 6 - (-2)?
Answer:
8
Step-by-step explanation:
That's the value for 6- (-2)=8
What is bigger 11/15 or 8/9?
8/9 = 0.88...
11/15 = 0.733...
8/9 is bigger
Answer:
8/9 is bigger
Step-by-step explanation:
11/15 equals 0.733333.....
8/9 equals 0.88888.....
Which expression is equivalent to 4(6x3)
Answer: you need to add the choices
Step-by-step explanation:
Tonya pays $300 each month to rent an office where she earns $25 per hour tutoring students. Which equation represents Tonya’s profit, y, for working
x hours?
Answer:
y = 25x – 300
Step-by-step explanation:hope I helped
Can someone please help with this question?
Answer: 21
Step-by-step explanation:
3x+2+5x+10= 180 (the Angles are supplementary)
8x+12=180
8x=168
x=21
Just say yes if equivalent or no if not equivalent
5x and x + 5
Answer:
I am pretty sure there equivalent
i thought of an integer.if i multiply it by itself you will get 9.What is my number
Answer:
Your number is 3
Step-by-step explanation:
3*3 is 9 and there are no other numbers multiplied by itself to get 9
In the triangle shown, find the length of the hypotenuse.
If this question doesn’t get answered I’m gonna be stressed out even more. I don’t know any of the answers to any of these questions.
What inequality is graphed below?
Answer:
B. x ≤ 2.5
Step-by-step explanation:
a and d say 3 which is wrong
either b or c
the filled in dot at the line indicates this is inequality
so its b
please help me and show your work please ill mark you brainliest :)
Answer:
Step 1 and step 2
Step-by-step explanation:
she has to subtract 30 not add 30.
2(3x+6)=3(x-10)
6x + 12 = 3x-30
6x +12 - 12 = 3x - 30 - 12
6x = 3x - 42
6x - 3x = 3x - 42 - 3x
3x = -42
3x/3 = -42/3
x = -14
Answer:
B
Step-by-step explanation:
Hey There!
So the first thing we're going to do is solve it and then compare it to Maya's steps to see where she made the mistake
2(3x+6)=3(x-10)
step 1 distribute the 2 to whats inside of the parenthesis (3x+6)
2*3x=6x
2*6=12
now we have
6x+12=3(x-10)
step 2 distribute 3 to what's inside of the parenthesis
3*x=3x
3*-10=-30
we're left with
6x+12=3x-30
step 3 add 30 to each side
12+30=42
now we have
6x+42=3x
step 4 subtract 6x from each side
3x-6x=-3x
now we have
-3x=42
step 5 divide each side by -3
42/-3=-14
so x = -14
now lets compare our steps to maya's
as we look at the steps we notice that she messes up on step 2
when distributing 3 to -10
she gets positive 30 but its supposed to be -30
so we can conclude that she mad a mistake from step 1 to step 2
therefore the second one is your answer
Evaluate the expression for p= -3
64 - 9p
Enter only the simplified numerical value after substituting the
value for the variable and doing the math.
Answer:
The answer is 91.
Step-by-step explanation:
If p = -3, then your equation is 64 + (-9 × -3).
-9 times -3 is 27.
27 + 64 = 91
Tan
Part A
What is the measure, in degrees, of ZPTR? Enter your answer in the bo
Answer:
[tex] \purple {\bold {m\angle PTR=136\degree}} [/tex]
[tex] \orange {\bold {m\angle PQR=68\degree}}[/tex]
Step-by-step explanation:
PS and RS are tangents to the circle with center T at points P and R. (given)
TP and TR are radii of the given circle.
[tex] \therefore PS\perp TP\: \&\: RS\perp TR[/tex]
(radius is perpendicular to the tangent)
[tex] \therefore m\angle TPQ= m\angle TRS =90\degree [/tex]
In quadrilateral SPTR
[tex] m\angle TPQ+ m\angle TRS+m\angle PSR +m\angle PTR=360\degree [/tex]
[tex] 90\degree+ 90\degree+44\degree +m\angle PTR=360\degree [/tex]
[tex] 224\degree +m\angle PTR=360\degree [/tex]
[tex] m\angle PTR=360\degree - 224\degree[/tex]
[tex] \purple {\bold {m\angle PTR=136\degree}} [/tex]
By inscribed angle theorem:
[tex] m\angle PQR=\frac{1}{2} \times m\angle PTR[/tex]
[tex] m\angle PQR=\frac{1}{2} \times 136\degree[/tex]
[tex] \orange {\bold {m\angle PQR=68\degree}}[/tex]
Please hurry it’s timed
Answer:
I believe it is Option 1
Step-by-step explanation:
Since the fourth root of 81 will be 3 and of 16 will be 2.
Describe a transformation or series of transformations that demonstrates the congruence between figures A and B.
Answer:
90 clockwise (or counterclockwise) rotation and then a reflection over the axis between the two shape (those two steps go in any order)
Step-by-step explanation:
for this lets mark the innermost point of each shape a (blue or A) and a' (red or B)* and the second point b and b'
here we see that the two shapes are in a position to where they seem reflected over a non-existent third diagonal axis, though this is not the case, we need to bring the shape into a position where it can be transformed to the quadrant of shape B and overlap the shape
so when you have a reflection over a diagonal axis, we can rotate or reflect the shape to a new quadrant, and perform the step thats not the first, so say we made a reflection over the X-axis, the shape is now in the lower half of the graph with shape B, from here we perform our last step wich is to rotate the shape into the quadrant of shape B in a clockwise motion, now a and a' overlap and b and b' overlap, same for c, c',d and d'
(*the ' in this case is called a prime symbol, when used, distinguishes two points or lines on a graph, A' = A prime)