Which expression is equivalent to 2.5+4(3/4a-5)-9.5?

Answers

Answer 1

Answer:

11

Step-by-step explanation:

Answer 2

Answer:

The first one is 2.5+3a-20-9.5,

and 3a-27 for the second one.


Related Questions


[tex] \binom{ \sin( \alpha) + \sin( 2alpha ) }{1 + \cos( \alpha ) + \cos(2 \alpha ) } = \tan( \alpha ) [/tex]

Answers

I see you use the TeX command "\binom" for binomial coefficient, but I think you meant to use "\frac" to write a fraction, namely,

[tex]\dfrac{\sin(\alpha)+\sin(2\alpha)}{1+\cos(\alpha)+\cos(2\alpha)}=\tan(\alpha)[/tex]

and I assume you're supposed to establish an identity.

Recall the double angle identities for cos and sin :

cos(2α) = cos²(α) - sin²(α) = 2 cos²(α) - 1

sin(2α) = 2 sin(α) cos(α)

Now expand the left side as

(sin(α) + sin(2α)) / (1 + cos(α) + cos(2α)) = (sin(α) + 2 sin(α) cos(α)) / (1 + cos(α) + 2 cos²(α) - 1)

Factor sin(α) from the numerator, and after canceling the 1s in the denominator and factor cos(α) :

… = [sin(α) (1 + 2 cos(α))] / [cos(α) (1 + 2 cos(α))]

Cancel the factors of 1 + 2 cos(α) :

… = sin(α) / cos(α)

which is equivalent to

… = tan(α)

by definition of tan.

Prism or pyramid pleaseeeeeeeee helpp

Answers

Answer:

Prism

Step-by-step explanation:

Kai can wrap 42 gifts in 3 hours. Answer the following questions, assuming that Kai can continue wrapping gifts at that same rate. How many gifts can Kai wrap in 24 hours? _______________ How many hours would it take him to wrap 126 gifts? _______________ How many gifts does Kai wrap per hour? _______________

Answers

Answer:

1. 336

2. 9

3. 14

Step-by-step explanation:

He wraps 42 gifts/3hours

24 hours is 8 "3 hours"

42 hours per 3 gifts * 8 "3 hours" = 336 gifts

126 gifts is 3 "42 gifts"

3 hours per 42 gifts * 3 "42 gifts" = 9 hours

He wraps 42 gifts/3hours

divide these values by 3 and you get  14 gifts/one hour

14 gifts every one hour

PLEASE HELP I WILL MARK YOU BRAINIEST!!

Answers

Answer:
r = 9

The error happened when -3 was multiplied by -r in the first step, negative and negative makes a positive so it should have been
-18 + 3r= 9 in the second step.
Hope this helps :)

Which pairs of numbers are opposites? Check all that

apply.

0-6 and -6

0-2 and 2

4 and 4

O 8 and -8

10 and 0

Ur welcome

Answers

Negative is the opposite of positive, so the only true opposites are. -2,2 8,-8

Answer:

–2 and 2      8 and –8                                                                                                         Which pairs of numbers are opposites? Check all that apply.

–6 and –6

–2 and 2

4 and 4

8 and –8

10 and 0

Step-by-step explanation:

3.5.1 Why do banks charge transaction fees?​

Answers

To make a profit and pay operating expenses, banks typically charge for the services they provide. When a bank lends you money, it charges interest on the loan. Even fee-free checking and savings accounts have some fees.
i miss brown hair color all the way better and internet is a little more expensive for me to do that one ☝️ w.

Draw four more rectangles with areas equal to 24cm².​

Answers

Area of rectangle is equal to: length times width. A=l•w
If A=24cm^2
24cm^2=1cm•24cm
24cm^2=2cm•12cm
24cm^2=3cm•8cm
24cm^2=4cm•6cm
Good luck

PLS HELP AND ANSWER QUICK PLZ

Answers

Answer:

∠CDE = 76

Explanation:

1) Find ∠CED

- 180 - 116 = 64

2) Find y

- 4y + 7y + 6 + 64 = 180

- 11y + 70 = 180

- 11y = 110

- y = 10

3) Substitute 10 for y

- 7y + 6

- 7(10) + 6

- 70 + 6

= 76

a college employs 15 stewards. what is the average monthly wage of the stewards if the college pays 226.20 naira in wages each months​

Answers

What are the options

Please help worth 10 points

Answers

Answer:

JK, NK

Step-by-step explanation:

both start at a point and extend through an arrow

determine the intercepts of the line
x intercepts (__ , __)
y intercepts (__ , __)​

Answers

I’m gonna try to help you. So in the graph the line on the x intercept is between 100 and 150. Meaning it is at 125. The Y intercept line is marked at 275.

Therefore the answer should be
x-intercept: (125, 0)
y-intercept: (0, 275)

ILL GIVE YOU BRAINLIEST PLEASE ANSWER

Answers

Answer:

376.9 ft²

Step-by-step explanation:

There you go the right answer

Trapezoid ABCD has an area of 525 cm squared. If height AB = 21 cm and BC = 37 cm, what is the measure of AD?​

Answers

Answer:

AD = 13

Step-by-step explanation:

Area of trapezoid ABCD

[tex] = \frac{1}{2} (AB + AD) \times AB \\ \\ 525= \frac{1}{2} (37+ AD) \times21\\ \\ 525 \times 2= (37+ AD) \times21 \\ \\ 1050 = 21 \times 37 + 21AD \\ \\ 1050 = 777+ 21AD \\ \\ 21AD = 1050 - 777 \\ \\ 21AD = 273 \\ \\ AD = \frac{273}{21} \\ \\ AD = 13[/tex]

How to find the volume of the cube?

Answers

Answer:

its 125

Step-by-step explanation:

5x5x5

Answer:

Volume = [tex]length * width * height.[/tex]

Step-by-step explanation:

[tex]V=a^{3}[/tex]  that is the formula

So the volume of this cube is 125 cm

A wooden wagon wheel has 12 equally spaced spokes radiating from the central hub.

Answers

Answer: 12 INCHES

Step-by-step explanation:

12 points and brainliest pls and thank you ! (no unknown links or ill report u and ur whole acc)

Answers

Answer:

13

cuz one of those square part = to 90 degrease

so 77 degrease is already shown so minus 90-77

and u get 14

Answer:

x = 13°

Step-by-step explanation:

Angles 77° and BGE are vertical and thus equal angles.  Angle x and BGE are complementary angles; thus, x + 77° = 90°.  Solving this for x, we get:

x = 13°

can someone help having trouble solving this question

Answers

Answer:

if you pit the shape in a straight line it would be 180 degrees now take 180 take 130 and 100 and subtract those add that to the other 30 then take 180 divided by 60

Answer:

x = 50°

Step-by-step explanation:

sum of exterior angles is always equal to 360°

so, we can add all the given numbers and set them equal to 360° to find x:

130° + 30° + 100° + x° + x° = 360°

260° + 2x = 360°

2x = 100°

x = 50°

Need Help Geometry Question I will give brainliest

Answers

Answer:

if u just scan that with photo math it will give u answer and explanation :) hope that helped i am sorry i don't know the anwswer

Step-by-step explanation:

Solve 7k ÷ 3 = 21.
The solution is k=?

Answers

Answer:

k=9

..............................

2 ( x - 10) + 1 = 60

Answers

Answer:

x = 39.5

Step-by-step explanation:

2(x-10) = 59

x - 10 = 29.5

x = 39.5

Answer:

x=39.5 or 79/2

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

i will give a crown if you are the first one to answer and if you get it right and if you just get it right then i will i give you a full star rating and a thanks

Answers

I think the answer is 7+56x
The simplified way would by 7•(8x+1)


1. Observa el siguiente conjunto de enteros (-1,0, 1)

A. ¿Cuál de las propiedades de los números reales son verdaderas
para el conjunto?

Answers

Answer:

no hablo espanol papas fritas papas fritas papas fritas papas fritas papas fritas papas fritas papas fritas papas fritas

Step-by-step explanation:


Please help me it’s a Friday and my cousin birthday tomorrow and if I don’t finish I can’t go. (NO LINKS) need explanation. (EXPLAIN) and no lying.

Answers

Answer:

D. 0-69

Step-by-step explanation:

I'm not quite 100% sure but I believe it is D. This is because the spread means the range, and the range is the lowest value to between the highest value so it makes sense that the spread is 0-69

apologize of its wrong

Need help 15 points pls help me

Answers

5 1/2 feet is the base of window.

Answer:

area of parllelogram =base×height

25 2/3=base×4 2/3

77/3=base×14/3

77/3×3/14=base

base=77/14=11/2=5 1/2feet

Find slope of (2,3) and (-5,6).

Answers

Answer:

Slope is 3/-7

Step-by-step explanation:

[tex]slope = \frac{6 - 3}{ - 5 - 2} = \frac{3}{ - 7} [/tex]

What is the solution to the system of equations
Y=x+6
Y= -0.5x+3

Answers

Answer:

[tex]y = 4 \\ x = - 2[/tex]

Many utility companies promote energy conservation by offering discount rates to consumers who keep their energy usage below certain established subsidy standards. A recent EPA report notes that 70% of the island residents of Puerto Rico hae reduced their electricity usage sufficiently to qualify for discounted rates. If five residential subscribers are randomly selected from San Juan, Puerto Rico, find the probability of each of the following events.a. All five qualify for the favorable rateb. At least four qualify for the favorable rates

Answers

Answer:

a. 0.1681 = 16.81% probability that all five qualify for the favorable rate.

b. 0.5283 = 52.83% probability that at least four qualify for the favorable rates

Step-by-step explanation:

For each Puerto Rico resident, there are only two possible outcomes. Either they qualify for discounted rates, or they do not. The probability of a person in the sample qualifying for discounted rates is independent of any other person in the sample. This means that the binomial probability distribution is used to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

In which [tex]C_{n,x}[/tex] is the number of different combinations of x objects from a set of n elements, given by the following formula.

[tex]C_{n,x} = \frac{n!}{x!(n-x)!}[/tex]

And p is the probability of X happening.

70% of the island residents of Puerto Rico have reduced their electricity usage sufficiently to qualify for discounted rates.

This means that [tex]p = 0.7[/tex]

Five residential subscribers are randomly selected from San Juan, Puerto Rico

This means that [tex]n = 5[/tex]

a. All five qualify for the favorable rate

This is P(X = 5). So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 5) = C_{5,5}.(0.7)^{5}.(0.3)^{0} = 0.1681[/tex]

0.1681 = 16.81% probability that all five qualify for the favorable rate.

b. At least four qualify for the favorable rates

This is

[tex]P(X \geq 4) = P(X = 4) + P(X = 5)[/tex]

So

[tex]P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}[/tex]

[tex]P(X = 4) = C_{5,4}.(0.7)^{4}.(0.3)^{1} = 0.3602[/tex]

[tex]P(X = 5) = C_{5,5}.(0.7)^{5}.(0.3)^{0} = 0.1681[/tex]

[tex]P(X \geq 4) = P(X = 4) + P(X = 5) = 0.3602 + 0.1681 = 0.5283[/tex]

0.5283 = 52.83% probability that at least four qualify for the favorable rates

Thomas lives more than 0.55 km and less than 0.75 km from his school.
Thomas lives from his school?
A. 0.06 km
B 0.50 km
c. 0.60 km
D. 1.30 km
What is the difference between 75 and 55

Answers

Answer:

C 0.60km

I hope this answer helps if you have any questions just ask

what is this answer h – 6.5 = 15

Answers

Answer:

h=43/2 = 21 1/2 = 21.5

Step-by-step explanation:

h−6.5=15

Add 6.5 to both sides.

h=15+6.5

Add 15 and 6.5 to get 21.5.

h=21.5

what is the surface area of this square pyramid with a base length of 4 centimeters and slant height of 9 centimeters? HELP PLEASE!!!!

Answers

Answer:

The surface area of a square pyramid = 1/2 * slant height * base perimeter + area of base

The slant height is 8 cm

The base perimeter is 4 * 5 cm = 20 cm

The area of the base is 5 cm * 5 cm = 25 cm**2

Plugging into the formula the area =

1/2 * 8 cm * 20 cm + 25 cm**2 =

4 cm * 20 cm + 25 cm**2 =

80 cm**2 + 25 cm**2 = 105 cm**2

The Surface Area of Pyramid is 105 cm².

What is Surface Area of Pyramid?

If “P” is the base perimeter, “l” is the slant height, and “B” is the base area, then the total surface area of the regular pyramid formula is given by (½)Pl + B Square units.

Given:

slant height, l= 8 cm

So, the base Perimeter = 4 x 5

                                      = 20 cm

Now, area of the base = 5 cm x 5 cm

                                     = 25 cm²

Then,  surface area of a square pyramid

= 1/2 x slant height x base perimeter + area of base

= 1/2 x 8 x 20 + 25

= 80 + 25

= 105 cm²

Hence, the Surface Area is 105 cm².

Learn more about Surface area of Pyramid here:

https://brainly.com/question/1503383

#SPJ2

Other Questions
Consider the right triangular prism. What is the volume of the right triangular prism? O 15 ft O 30 ft? O 150 ft" O 300 ft) Compare the bold sections of both sentences and then answer the question that follows:Original: My father disliked sleet, but my father disliked hail more.Revised: My father disliked sleet, but he hated hail more.What was done to the bolded section to improve the sentence? (10 points) aA longer phrase was converted to a single word. bA modifier that did not add meaning was removed. cRedundant phrases were eliminated. dRepetitive words were replaced with synonyms and pronouns. Travel on America's rivers increased after which year?1784178117761700 plz help will give out brainliestWhich figure correctly shows a vertical reflection of the illustration? In what ways have Russians positively affected their environment? Write a method that reverses the sequence of elements in an array. For example, if you call the method with the array g How did the Mexican War encourage the sectional crisis in the US in the late 1840s?A)Proslavery and antislavery groups disagreed over whether the landsacquired in the war should be open or closed to slavery.B)Mexico was threatening to invade Texas and bring about an end to slaveryC) Mexican-produced cotton was increasing in competition with the Southand was, in turn, increasing the demand for Southern slaves.D)Mexico was only willing to sell lands to the United States if they would beclosed to slavery. Contestants randomly draw a ticket from a hat and replace it. The table shows the results after 40 draws. There are 7 winning tickets in the hat. Predict the total number of tickets in the hat. Is this an example of indirect or direct characterization? Justify your answer. "That night, she slept with the letter under her cheek." please help.......... a rocket engine applies a force of 50000 N for a distance of 20 m. how much work is done? does an athelete runs with same strategu while running a short distance and long distance running?why or why not. explain how industrialization in Bangladesh has impacted the economy of developed countries like the United States. help :): cells provide for the support and protection of the body.options:BoneEpithelialNerve______________________________________if you answer it right:(hi if u want brainlist's answer this question then ask another random question on your page so u can give me brainlist back, also i need to people to answer so i can chose one of you guys to give the brainlist's to, deal or no?) PLEASE HELP ME!!!!! brainy to whoever answers correctly! answer all parts please. PLEASE HELP ME DUE IN 10 MIN can someone help me with both of these pleaseee!!! 3. In the fourth sentence of the final paragraph, the author uses the word calamity primarily to y = 3csc 20What is the period? Lo-crete produces quick setting concrete mix. Production of 200,000 tons was started in April, 190,000 tons were completed. Material costs were $3,152,000 for the month while conversion costs were $591,000. There was no beginning work-in-process; the ending work-in-process was 70% complete. What is the cost of the product that was completed and transferred to finished goods