Answer:
answer should be 13
Step-by-step explanation:
look to photo
What type of number can be written as a fraction, where p and q are
integers and q is not equal to zero?
A. A rational number
B. All numbers
C. An irrational number
D.n
Answer:
A. rational number can be written p/q form, where q not equal to zero.
Answer:
its A
Step-by-step explanation:
PLEASE HURRY I NEED MY WORK TO BE SHOWN!!!!! 15 POINTS!!! CORRECT ANSWERS ONLY PLEASE!!!
Answer:
f(-4) = 72, f(x + 5) = 3x² + 23x + 36
Step-by-step explanation:
f(-4) = 3(-4)² - 7(-4) - 4
= 48 - (-28) - 4
f(-4) = 72
f(x + 5) = 3(x + 5)² - 7(x + 5) - 4
= 3(x + 5)(x + 5) - 7(x + 5) - 4
= 3(x² + 10x + 25) - 7(x + 5) - 4
= 3x² + 30x + 75 - 7x - 35 - 4
f(x + 5) = 3x² + 23x + 36
Let : → be the quadratic function defined by () = 2
2 + 6 − 8. Find
(i) the vertex (ii) the range
(iii) the axis of symmetry (iv) x-intercepts
(v) the graph of the function f
please answer step by step
Step-by-step explanation:
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A coffee pot holds 5 1/2 quarts of coffee. How much is this in cups?
Write your answer as a whole number or a mixed number in simplest form. Include the correct unit in your answer.
Answer:
22 cups
Step-by-step explanation:
1 quart is 4 cups. So therfore 5 1/2 * 4 =22
Hope this helped :)
Are all numbers that are divisible by 2 also divisible by 10
Answer:The Rule for 10: Numbers that are divisible by 10 need to be even and divisible by 5, because the prime factors of 10 are 5 and 2. Basically, this means that for a number to be divisible by 10, the last digit must be a 0. ... So this number is even and divisible by 5. That means that it is also divisible by 10
Step-by-step explanation:
find the value of x to the nearest tenth
Answer:
9.0
Step-by-step explanation:
x = 7 / cos 39°
= 7 / 0.7771
= 9.0
How many people will get candy?
Answer:
22 people
Step-by-step explanation:
Answer:
22
Step-by-step explanation:
First:
Convert any mixed numbers to fractions.
Then your initial equation becomes:
11/4
Applying the fractions formula for division,
11x8
4x1
Simplifying 88/4, the answer is
22Determine the values of the parameter s for which the system has a unique solution, and describe the solution. x 1 - 5 sx 2
Answer:
[tex]s \ne \±2[/tex]
[tex]x_1 = \frac{3s - 2}{3(s^2 -4)}[/tex]
[tex]x_2 = \frac{2(s- 6)}{5(s^2 - 4)}[/tex]
Step-by-step explanation:
Given
[tex]3sx_1 +5x_2 = 3[/tex]
[tex]12x_1 + 5sx_2 =2[/tex]
Required
Determine the value of s
Express the equations as a matrix
[tex]A =\left[\begin{array}{cc}3s&5\\12&5s\end{array}\right][/tex]
Calculate the determinant
[tex]|A|= (3s*5s -5 *12)[/tex]
[tex]|A|= (15s^2 -60)[/tex]
Factorize
[tex]|A|= 15(s^2 -4)[/tex]
Apply difference of two squares
[tex]|A|= 15(s -2)(s + 2)[/tex]
For the system to have a unique solution;
[tex]|A| =0[/tex]
So, we have:
[tex]15(s -2)(s+2) = 0[/tex]
Divide both sides by 15
[tex](s -2)(s+2) = 0[/tex]
Solve for s
[tex]s -2 = 0\ or\ s +2 = 0[/tex]
[tex]s = 2\ or\ s = -2[/tex]
The result can be combined as:
[tex]s =\±2[/tex]
Hence, the system has a unique solution when [tex]s \ne \±2[/tex]
Next, we solve for s using Cramer's rule.
We have:
[tex]mat\ x_1 = \left[\begin{array}{cc}3&5\\2&5s\end{array}\right][/tex]
Calculate the determinant
[tex]|x_1| = (3 * 5s - 5 *2)[/tex]
[tex]|x_1| = 15s - 10[/tex]
So:
[tex]x_1 =\frac{|x_1|}{|A|}[/tex]
[tex]x_1 = \frac{15s - 10}{15(s -2)(s+2)}[/tex]
Factorize
[tex]x_1 = \frac{5(3s - 2)}{15(s -2)(s+2)}[/tex]
Divide by 5
[tex]x_1 = \frac{3s - 2}{3(s -2)(s+2)}[/tex]
[tex]x_1 = \frac{3s - 2}{3(s^2 -4)}[/tex]
Similarly:
[tex]mat\ x_2 =\left[\begin{array}{cc}3s&3\\12&2\end{array}\right][/tex]
Calculate the determinant
[tex]|x_2| = 3s * 2 - 3 * 12[/tex]
[tex]|x_2| = 6s- 36[/tex]
So:
[tex]x_2 =\frac{|x_2|}{|A|}[/tex]
[tex]x_2 = \frac{6s- 36}{15(s -2)(s+2)}[/tex]
Factorize
[tex]x_2 = \frac{6(s- 6)}{15(s -2)(s+2)}[/tex]
Divide by 3
[tex]x_2 = \frac{2(s- 6)}{5(s -2)(s+2)}[/tex]
[tex]x_2 = \frac{2(s- 6)}{5(s^2 - 4)}[/tex]
David went shopping for a new phone because of. A sale. The price on the tag was 46$ but David paid 39.10 before tax. Find a he percent discount
Answer:
2x
Step-by-step explanation:
Complete answer
Answer:
2x
Step-by-step explanation:
Mental math is just better
Need help *URGENT*
7th grade
Vertical Angles
Given f(x) = 4x + 2, find f(x + 3).
O f(x + 3) = x + 5
O f(x + 3) = 4x2 + 14x + 6
O f(x + 3) = 4x + 14
O f(x + 3) = 4x + 5
Answer:
f(x+3) = 4x + 14
Step-by-step explanation:
f(x+3) = 4(x+3) + 2
f(x+3) = 4x + 12 + 2
f(x+3) = 4x + 14
hope this helps!
Answer:
f(x)=4x+2
f(x+3) means substitute x as (x+3)
f(x+3)=4(x+3) +2
= 4x + 12 + 2
=4x+14.
OPTION C IS LEGIT
need these Questions answered ASAP!!!!
The sum of two numbers is 67. The difference of the two numbers is 53. What are the two numbers?
Answer:
One number is 60 and the other is 7.
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
BracketsParenthesisExponentsMultiplicationDivisionAdditionSubtractionLeft to RightEquality Properties
Multiplication Property of EqualityDivision Property of EqualityAddition Property of EqualitySubtraction Property of EqualityAlgebra I
Terms/CoefficientsSolving systems of equation using substitution/eliminationStep-by-step explanation:
Step 1: Define
Identify and set up
Let x be one number and y be the other.
x + y = 67
x - y = 53
Step 2: Solve for x
Elimination
Combine two equations: 2x = 120[Division Property of Equality] Divide 2 on both sides: x = 60Step 3: Solve for y
Substitute in x [1st Equation]: 60 + y = 67[Subtraction Property of Equality] Subtract 50 on both sides: y = 7Which number when multiplied by3/8 gives 1/2
Answer:
the answer is 8/6.
Step-by-step explanation:
8/6 x 3/8 is 24/48 which can be reduced several times to the lowest it can be which is 1/2.
What is the center and radius of the circle with the given equation? (x+6)^2 + (y-1)^2=9
Answer:
center=(-6, 1)
radius=√9= 3
Step-by-step explanation:
(x-h)^2 + (y-k)^2=r^2
Arianna has a coin collection. She keeps 4 of the coins in her box, which is 10% of the
collection. How many total coins are in her collection?
Answer: 40 coins. Doesn't your profile say college?
Find the area of the shaded region.
Answer:
253 cm^2
Step-by-step explanation:
Large rectangle (without the cutout)
A = wl
A = 18*18
A = 325
Small rectangle (cutout)
A = wl
A = 12 * 6
A = 72
Substract 72 from 325
On an architects blueprint, 1 inch corresponds to 9 feet. If an exterior wall is 60 feet long, find how long the blueprint measurement should be
Answer:
x = 6.67 inches
Step-by-step explanation:
Set upa s a proportion
x/60 = 1/9
x = 1/9 * 60
x = 6.67 inches
If the two angles are complementary, find the measure of each of angle.
Hi there!
»»————- ★ ————-««
I believe your answer is:
[tex]\text{D) } 40 \text{ and }50[/tex]
»»————- ★ ————-««
Here’s why:
Complementary Angles have a sum of 90°.⸻⸻⸻⸻
[tex]\boxed{\text{Setting up an equation...}}}\\\\ \text{We know that complementary angles add up to 90 degrees.}\\\text{Therefore, the sum of the two angles is 90 degrees.}\\\\\rightarrow 4r + 5r = 90[/tex]
⸻⸻⸻⸻
[tex]\boxed{\text{Solving for 'r'...}}\\\\4r + 5r = 90\\---------------\\\rightarrow 9r = 90\\\\\rightarrow \frac{9r=90}{9}\\\\\boxed{r = 10}[/tex]
⸻⸻⸻⸻
[tex]\boxed{\text{Evaluating the expressions given...}}\\\\4r \text{ and } 5r\\----------------\\\boxed{4r}\\\\\rightarrow 4(10)\\\\\rightarrow 4 * 10\\\\\rightarrow\boxed{40}\\----------------\\\boxed{5r}\\\\\rightarrow 5(10)\\\\\rightarrow 5 * 10\\\\\rightarrow \boxed{50}[/tex]
⸻⸻⸻⸻
The correct answer should be D.
⸻⸻⸻⸻
»»————- ★ ————-««
Hope this helps you. I apologize if it’s incorrect.
Answer:
D 40 degree and 50 degree
Step-by-step explanation:
* We can work in units when dealing with tens as 4 + 5 = 9
* As the angle ASD is a Right Angle 4r : 5r = 9r
* 2 angles we see within add up to 90 degree 90 = 9r
ASM + MSO = 90 degree
* 5r = ASM and 4r = MSO = 50 = ASM and 40 = MSO
Therefore ASO - MSO = ASM = 90 - 50 = 40
90 - 50 = 40 and 90 - 5r = 4r
4r = 40 degree and 5r = 50 degree
So just list a few of the above and show that
4r + 5r = 90
9r = 90/9
r = 10
Rounding to zero angles = 40 + 50 = 90 as r = 10
* Answer is D 40 degree and 50 degree
Write the quadratic equation whose roots are 1 and -1, and whose leading coefficient is 4
Answer:
y = 4x² - 4
Step-by-step explanation:
y = a(x - x₁ )(x - x₂)
Plug in the knowns
y = 4(x - 1)(x + 1)
expand
y = 4(x² - 1)
y = 4x² - 4
4+4 HELP ME RNNNNN zzolzzz
Answer:
8
Step-by-step explanation:
I'm not too sure, I think it might be 8.
Answer:
4+4 = 8
Step-by-step explanation:
please help i need it!!!
Answer:
9
Step-by-step explanation:
Answer:
y = - x + 9
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (0, 9) and (x₂, y₂ ) = (9, 0) ← 2 points on the line
m = [tex]\frac{0-9}{9-0}[/tex] = [tex]\frac{-9}{9}[/tex] = - 1
The line crosses the y- axis at (0, 9 ) ⇒ c = 9
y = - x + 9 ← equation of line
HELP
use the graph below to fill the blank with the correct number:
f(1)=
Answer:
-2
Step-by-step explanation:
f(1) is the value of y when x = 1.
Thus, from the graph, we see that when x = 1 on the x-axis, on the y-axis, we have a corresponding y value of -2.
This means y = -2 when x = 1.
Therefore:
f(1) = -2
d + 5.5 = 10. Solve for d.
Answer:
d=4.5
Step-by-step explanation:
d+5.5=10
d=10-5.5
d=4.5
Hope this is helpful
Which graph represents the equation y = – (x – 1)2 + 1?
Answer:
No graph was put in, but heres a helpful answer.
Step-by-step explanation:
There is no graph, but
Y=-1(2x-2)+1
y=-2x+2+1
y=-2x+3
The required graph has been attached below that represents the equation of the parabola y = – (x – 1)² + 1.
What is Parabola?A parabola is a U-shaped curve this is drawn for a quadratic function,
f(x) = ax² + b x + c.
The graph of the parabola is downward (or opens down), when the price of a is much less than 0, a < 0. The graph of the parabola is upward (or opens up) when the value of a is more than 0, a > 0.
The equation of the parabola is given in the question, as follows:
y = – (x – 1)² + 1
As we know that parabola is, an open curve is a conic segment produced via the intersection of a proper circular cone and a plane parallel to an element of the cone.
Here, (1,1) is most likely to be the relative maximum for this graph.
The required graph has been attached below that represents the equation y = – (x – 1)² + 1.
Learn more about the parabola here:
brainly.com/question/4074088
#SPJ6
You roll a number cube (six sides, #1 - 6). What is the probability of rolling a 5? *
Answer:
The probability of rolling a 5 is 1/6.
Step-by-step explanation:
There is only one 5 out of the 6 sides, therefor you can only get it once, so the probability of rolling a 5 would be 1/6.
calculate the area of a circle with a diameter of 8.2 inches. show or explain your reasoning.
Answer:
Area = 52.81 square inches
Step-by-step explanation:
[tex]Diameter = 8.2in\\\\Radius = \frac{diameter}{2}=\frac{8.2}{2}=4.1in\\\\Area \ of \ a \ circle = \pi r^2 = \pi \times 4.1^2 = 52.81 in^2[/tex]
Write an equation for the line graphed below: y=??
Answer: y=-2x-1
Step-by-step explanation:
First let's find the slope by using the formula [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
[tex]\frac{-3--1}{1-0} \\\frac{-2}{1} \\-2[/tex]
The equation for slope intercept form is y=mx+b where m is the slope and b is the y-intercept
The y-intercept is -1 giving us the equation
y=-2x-1
Exhibit 13-3 To test whether or not there is a difference between treatments A, B, and C, a sample of 12 observations has been randomly assigned to the three treatments. You are given the results below. Treatment Observation A 20 30 25 33 B 22 26 20 28 C 40 30 28 22 The test statistic to test the null hypothesis equals _____. a. 1.059 b. .944 c. 19.231 d. 3.13
Answer:
a. 1.059
Step-by-step explanation:
Test statistics is used in hypothesis testing to find the conclusion. Test statistics are T-values which are used in testing a hypothesis and deciding whether to accept or reject the null hypothesis.
Test statistics can be calculated with the following formula:
Z = x - u / s /[tex]\sqrt{n}[/tex]
geometry: HELPPPP PLSS!!
Answer:
A, C and G
Step-by-step explanation:
[tex]\boxed{\begin{minipage}{9.4 cm}\underline{Trigonometric ratios} \\\\$\sf \sin(\theta)=\dfrac{O}{H}\quad\cos(\theta)=\dfrac{A}{H}\quad\tan(\theta)=\dfrac{O}{A}$\\\\where:\\ \phantom{ww}$\bullet$ $\theta$ is the angle. \\ \phantom{ww}$\bullet$ $\sf O$ is the side opposite the angle. \\\phantom{ww}$\bullet$ $\sf A$ is the side adjacent the angle. \\\phantom{ww}$\bullet$ $\sf H$ is the hypotenuse (the side opposite the right angle). \\\end{minipage}}[/tex]
From inspection of the given right triangle:
θ = 25°O = aA = bH = cSubstitute the values into the trigonometric ratios:
[tex]\implies \sf \sin(25^{\circ})=\dfrac{a}{c}[/tex]
[tex]\implies \sf \cos(25^{\circ})=\dfrac{b}{c}[/tex]
[tex]\implies \sf \tan(25^{\circ})=\dfrac{a}{b}[/tex]
[tex]\boxed{\begin{minipage}{4 cm}\underline{Trigonometric values} \\\\$\sin(90^{\circ}- \theta)=\cos \theta$\\$\cos(90^{\circ}- \theta)=\sin \theta$\\$\tan(90^{\circ}- \theta)=\cot \theta$\\\end{minipage}}[/tex]
Using trigonometric values and the calculated trigonometric ratios:
[tex]\begin{aligned} \sf \sin(90^{\circ}- 25^{\circ})&=\sf \cos (25^{\circ})\\\implies \sf \sin(65^{\circ}) &=\sf \dfrac{b}{c}\end{aligned}[/tex]
[tex]\begin{aligned} \sf \cos(90^{\circ}- 25^{\circ})&= \sf \sin(25^{\circ})\\\implies \sf \cos(65^{\circ}) &=\sf \dfrac{a}{c}\end{aligned}[/tex]
[tex]\begin{aligned}\sf \tan(90^{\circ}- 25^{\circ})&= \sf \cot(25^{\circ})\\\implies \sf \tan(65^{\circ}) &= \sf \dfrac{1}{\tan(25^{\circ})}\\\implies \sf \tan(65^{\circ}) & = \sf \dfrac{b}{a}\end{aligned}[/tex]
Therefore, the true equations are:
[tex]\sf A: \quad \cos(25^{\circ})=\dfrac{b}{c}[/tex]
[tex]\sf C: \quad \sin(65^{\circ})=\dfrac{b}{c}[/tex]
[tex]\sf G: \quad \sin(25^{\circ})=\cos(65^{\circ})[/tex]