Answer:
[tex]\frac{8}{4}[/tex] = 2
Step-by-step explanation:
Divide numerator by denominator
[tex]\frac{10}{4}[/tex] = 2.5 ← not a whole number
[tex]\frac{8}{4}[/tex] = 2 ← a whole number
[tex]\frac{3}{6}[/tex] = 0.5 ← not a whole number
[tex]\frac{7}{8}[/tex] = 0.875 ← not a whole number
Calculando a expressão (-2)² + (+5)², obtemos qual resultado?
a) + 29
b) + 21
c) + 14
d) + 6
Answer:
a
Step-by-step explanation:
(-2)² + (+5)² = (-2)*(-2) + 5 * 5
= 4 + 25
= +29
A start-up company is about to market a new computer printer. It decides to gamble by running commercials during the Super Bowl. The company hopes that name recognition will be worththe high cost of the ads. The goal of the company is that over 40% of the public recognize its brand name and associate it with computer equipment. The day after the game, a pollster contacts 420 randomly chosen adults and finds that 181 of them know thatthis company manufactures printers. Would you recommend that the company continue to advertise during Super Bowls
Reject the null hypothesis and come to the conclusion that there is enough evidence to imply that the percentage of adults who are familiar with the company's name is much more than 40%.
What is the null hypothesis?In order to evaluate whether the percentage of individuals who recognize the company's brand name differs considerably from the company's target of 40%, we must conduct a hypothesis test.
Let p represent the percentage of adults who can name the company's brand. The corporation hopes that more than 40% of adults will recognize its brand name, hence the alternative hypothesis is that p > 0.4.
A one-sample z-test can be used to examine this claim. The test statistic is determined as follows:
[tex]z = \dfrac{(p' - p)} { \sqrt{\dfrac{(p (1 - p)} { n}}}[/tex]
Where p is the null hypothesis value, n is the sample size, and p is the sample proportion.
In this instance, n = 420, p = 0.4, and p' = 181/420 = 0.431. With these values entered into the formula, we obtain:
[tex]z = \dfrac{(0.431 - 0.4)} { \sqrt{(0.4 \times \dfrac{0.6} { 420} }}= 1.65[/tex]
The likelihood of obtaining a z-value of 1.65 or higher is 0.0495 using a basic normal distribution table or calculator (assuming the null hypothesis is true). This is the test's p-value.
When the p-value is less than 0.05, which is considered to be significant (and corresponds to a 95% confidence level), we
Hence, based on this sample of 420 adults, we would advise the company to keep running Super Bowl advertisements as it seems to be succeeding in raising brand recognition among the general public.
To know more about the null hypothesis follow
https://brainly.com/question/15980493
#SPJ6
Which relation is a function?
o {(4,0),(4,1),(4,2), (4,3)}
o {(7,4), (8,8), (10,8), (10,10)}
o {(-1,3), (-2,6),(0,0),(-2,-2)}
o {(2,2), (1,1),(0,0), (-2,-2)}
Given:
Different relations in the options.
To find:
The relation which is a function.
Solution:
A relation is a function if there exist unique output for each input value. In other words, there exist only one y-value for each x value.
In option A, [tex]y=0,1, 2, 3[/tex] for [tex]x=4[/tex]. So, this relation is not a function.
In option B, [tex]y=8, 10[/tex] for [tex]x=10[/tex]. So, this relation is not a function.
In option C, [tex]y=6, -2[/tex] for [tex]x=-2[/tex]. So, this relation is not a function.
In option D, all x-values are different. So, their exist unique output for each input value. It means this relation is a function.
Therefore, the correct option is D.
The number of Roberto’s baseball cards is ¾ the number of David’s cards If Roberto gives ½ of his cards to David, what will be the ratio of Roberto’s cards to David’s cards? please help me. I need it to step by step equations!!!!
Answer:
1/4, 0.25
Step-by-step explanation:
Answer:
3/11
Step-by-step explanation:
Let Roberto's cards be x.
Let David's cards be y
x = (3/4) y
Roberto gives half his cards away which is 1/2*(3/4) = 3/8
David's new amount after the gift = 1/2(3/4)y + y = 3/8y+y=3y/8+8y/8 = 11y/8
So the ratio is Roberto / David = (3/8) // (11/8)
Roberto to David = 3/8 // 11.8 which you now invert and multiply the denominator
Roberto to David = 3/8 * 8/11 = 3/11
Done on my cell.
La inversa del coseno es
a. El arcoseno
b. El arcocoseno
c. La secante
Answer:
Step-by-step explanation:
LavLa inversa del coseno es
a. El arcoseno
b. El arcocoseno
c. La secante
La inversa del coseno es
a. El arcoseno
b. El arcocoseno
c. La secante
La inversa del coseno es
a. El arcoseno
b. El arcocoseno
c. La secante
inversa del coseno es
a. El arcoseno
b. El arcocoseno
c. La secante
A bowl contained 19.4 grams of salt. Then, Greg poured in another 56.24 grams. How much salt does the bowl contain now?
Answer:
75.64
Step-by-step explanation:
add them
Answer:
75.64
Step-by-step explanation:
Add the two amounts together to determine the amount of salt in the bowl
19.4+56.24
Make sure to line up the decimals
19.4
56.24
-----------
75.64
Convert 21/44 to decimal.
Answer:
0.4772
Step-by-step explanation:
Convert the fraction to a decimal by dividing the numerator by the denominator.
Answer:
[tex]\huge\boxed{Answer\hookleftarrow}[/tex]
⎇ The answer of [tex] \frac{21}{44} [/tex] is [tex]\large\bold{0.4772....}[/tex]
Refer to the attachment for the steps.
____________________
ʰᵒᵖᵉ ⁱᵗ ʰᵉˡᵖˢ
# ꧁❣ RainbowSalt2²2² ࿐
I’m confused.. please help me
Answer:
It's [tex]3x^4+22x^3+31x^2-6[/tex]
Step-by-step explanation:
Area is L times width
LW=H
and the length is [tex]3x^2+4x-1[/tex] times the width [tex]x^2+6x+3[/tex]
basically you multiply yhem togetheer and combine like terms and voila
The answer is 3x^4 + 24x^2 - 6
explanation:
A = l × w
= (3x^2+4x-2)(x^2+6x+3)
=(3x × x) + (4x×6x) + (-2×3)
= 3x^2 + 24x^2 - 6
Someone help me please
Answer:
h. I dont understand the question-
i. 2w + 5
j. 7m + 13s (I didnt get the second number)
k. -2x + 3y (I also didnt get the first number-)
l. 5c - 2d
m. 10a + 2g
n. 5a + 12
Step-by-step explanation:
How many t-shirts did the company purchase if their total cost was $100? Explain how you found your answer.
Please help me Thanks
Please help I need help
Answer:
x=10
Step-by-step explanation:
To solve for x, you need to draw an imaginary line connecting the right end of side x to the left side with length 15. This forms a triangle with side lengths 6 and 8, and hypotenuse x. Using the Pythagorean Theorem to solve for x, we get 6^2 + 8^2 = x^2, 36 + 64 = 100, [tex]\sqrt{100}[/tex] = 10.
Answer:
It's 10
Step-by-step explanation:
C^2=A^2+B^2blank
C=√(A^2+B^2)
If c is x and a and b are the side lengths the we can use Pythagoras's theorem to calculate the length of the line. A=6 B=8 and in the end when you calculate all that doohickey stuff you get x=10
Divide: 5 + 2i by 3 + 4i.
Answer:
1-2i
Step-by-step explanation:
Divide: 5 + 2i by 3 + 4i.
Given data
5 + 2i by 3 + 4i.
We have the expression as
(5 + 2i)/(3 + 4i)
Rationalize the denominator
(5 + 2i)/(3 + 4i)* (3 -4i)/(3 -4i)
=(5*3-20i+6i-8i^2)/9-12i-12i+16i^2
=15-14i+8/9-16
=7-14i/-7
=1-2i
by subtacting 7i from 3i we get
Answer:
Step-by-step explanation:
according to the question equation is
3i-71
-4i
Answer:
3i - 7i = (3-7)i = -4i
so -4i.
What angel is 239 degrees
Answer:
Reflex AngleStep-by-step explanation:
All the measuring angles above 180 degrees and less than 360 degrees are termed Reflex angles.
Eg: 239° is greater than 180° and lesser than 360° So it's a reflex angle
Keisha has a rug in the shape of a rectangle that she wants to put in her bedroom. The rug has an area of 6 square meters. She wants to see if it will fit in the space she has in her bedroom. If the rug has a height of 2.5 meters, what is the base of the rug?
The rug has a base of ____ meters.
Answer:
2.4
6 divided by 2.5= 2.4
Step-by-step explanation:
Hope this is correct, if not feel free to let me know and I can fix it. I'm sorry in advance if it is incorrect.
Answer:
The answer is indeed 2.4:
Step-by-step explanation:
A bouquet of lilies and tulips has 12 flowers. Lilies cost $3 each, and tulips cost $2 each. The bouquet costs $32. Write and solve a system of linear equations to find the numbers of lilies and tulips in the bouquet.
Answer:
Step-by-step explanation:
the function f(x) and g(x) are graphed of the set of aces below. for which value of x is f(x)≠g(x)
Answer:
[tex]f(x)\neq g(x)[/tex]
[tex]when ~x=3[/tex]
[tex]So, the ~third~ option~is ~your~ answer[/tex]
-----------------------hope it helps...have a great day!!I NEED HELP ASAP!!!!!Find the value of x in the triangle shown below. 9 8
Answer:
x = √17 exact answer
x ≈ 4.12 decimal approximation
Step-by-step explanation:
a² + b² = c²
x² + 8² = 9²
x² + 64 = 81
x² = 17
Take the square root of both sides
x = √17 exact answer
x ≈ 4.12 decimal approximation
SOMEONE HELP, I HAVENT BEEN PAYING ATTENTION TO CLASS
Answer:
A=4cm
ok to do this we do the formula
A=PiR^2
A=3.14*4^2
A=3.14*16
A=50.24
and the area of circle B is 4 times the area of a so
50.24*4=200.96
200.96=3.14*X^2
Since r is on the right side of the equation, switch the sides so it is on the left side of the equation. 3.14 ⋅ r 2 = 200.96 Divide each term by 3.14 and simplify.
r 2 = 64
r=8
CIRLCE A=50.24
CIRLCE B=8
Which cone has a volume of 24 x cm?
Answer:
cone a is the correct answer
the third choice is the cirrect answer.
the cone with a 4.5 cm height and a 8cm diameter
hope this helps :)
Help
!!!!!!!!!!!!!!!!!!!
Answer:
[tex] \frac{1}{5} \times \frac{1}{5} \times \frac{1}{5} = \frac{1}{125} [/tex]
Does anyone know this ?
Round off 2/3 correct to 2 significane figures
=====================================================
Explanation:
Use of a calculator will show that
2/3 = 0.6666...
where the 6's go on forever. Your teacher only wants 2 significant figures though. That means you'll round to the nearest hundredth to get 0.67
The 0 to the left of the decimal point is not a significant figure. The reason being is because we can rewrite 0.67 into 6.7*10^(-1); we can see the coefficient 6.7 having two sig figs.
The above figure is:
a Regular Polygon.
a Convex Polygon.
Not a Polygon.
a Non-Convex Polygon.
HELPPP
Answer:
non-convex polygon
Step-by-step explanation:
For the question "Which binomial is a factor of 9x² – 64?
3x – 8
9x – 32
3x + 32
9x + 8
I got two different answers from the choices: (x + 8)(9x - 8).
What went wrong?
Answer:
3x-8
Step-by-step explanation:
9x²-64 is the same as
(3x)² - 8²
now we have the difference of 2 squares, a²-b² =(a -b)(a +b), where a=3x, b=8
9x²-64 = (3x-8)(3x+8)
Un hombre compra un caballo por 50 dolares. Vende el caballo por 70 dolares. Despues vuelve a compar el caballo por 80 dolares. Y vuelve a venderlo de nuevo por 90 dolares. Al final, ¿cuanto obtuvo de ganancia?
Answer:
30 dólares es la ganancia neta.
Step-by-step explanation:
En la primera transacción, el hombre está perdiendo 50 dólares:
1. -50 dólares
En la segunda transacción, el hombre gana 70 dólares:
2. -50 + 70 = +20 dólares
En la tercera transacción pierde 80 dólares:
3. 20 - 80 dólares = -60 dólares
Y en la última transacción, la ganancia es de 90 dólares. Así, la ganancia neta es:
4. -60 dólares + 90 dólares =
30 dólares es la ganancia netaI need help with this pleaseeeee
Answer:
Distributive property
Step-by-step explanation:
It is very helpful with equations and polinomials
help please asap I NEED THE WORKING TOO!!!!!!!
Answer:
9/7 =a
Step-by-step explanation:
9 / -a + 15 = 8
Subtract 15 from each side
9 / -a + 15 -15 = 8-15
9 / -a = -7
Multiply each side by -a
9/-a * -a = -7 * -a
9 =7a
Divide each side by 7
9/7 = 7a/7
9/7 =a
Answer:
9 / 7 = a
Step-by-step explanation:
9 / - a + 15 = 8
Determined the defined range
9 / ( - a ) + 15 = 8 , a ≠ 0
subtract 15 from each side
9 / - a + 15 - 15 = 8 - 15
calculate the difference
9 / - a = - 7
multiply both side of equation by - a
9 / - a × - a = - 7 × - a
9 = 7 a
divide each side by of equation by 7
9 / 7 = 7 a / 7
9 / 7 = a
please help me with the correct answer
Answer:
1i)-7 ii)15 iii)-17 iv)8 v)5
2i)5 ii)-34 iii)-82 iv)1 v)0
Step-by-step explanation:
The numerator is the number on the top of a fraction
The denominator is the numer on the bottom of the faction.
Answer:
Step-by-step explanation:
1. Numerator
(i) (-7)/5 = -7
(ii) 15/(-4) = 15
(iii) (-17)/(-21) = 17/21 = 17
(iv) 8/9 = 8
(v) 5 = 5/1 = 5
2. Denominator
(I) (-4)/5 = 5
(ii) (11)/(-34) = -34
(iii) (-15)/(-82) = (15/82) = 82
(iv) 15 = 15/ 1 = 1
(v) 0 = 0/1 = 1
[tex]3. \ \frac{(-3) \times 4}{7} \ , \ \frac{(34-23) \times (7-4)}{11}[/tex]
4. Rational numbers as integers
(17)/1 = 17
(-23)/1 = -23
35/1 = 35
(-77)/1 = -77
91/1 = 91
