What value of a makes the equation true? PLEASE HELP!!!

1.7a+0.3a=45

A. a=25

B. a=245

C. a=−115

D. a=135

Answers

Answer 1
1.7 a+ 0.3a =45
2a =45
a = 45/ 2
a= 27.5
???

Related Questions

the average cost of regular gasoline in north carolina increased by 73% from 2006 to 2007. If the average cost of a gallon of gas in 2006 was %2.069, what was the average cost in 2007?

Answers

you would need to do 2.069+73% which would get you 3.57937
Final answer:

The average cost of regular gasoline in North Carolina increased by 73% from 2006 to 2007. Therefore, if the average cost in 2006 was $2.069, it increased by approximately $1.51 to about $3.58 per gallon in 2007.

Explanation:

The subject of this question is a real-world application of the concept of percentage increase in mathematics. To calculate the average cost of regular gasoline in North Carolina in 2007, we use the given fact that it increased by 73% from 2006 to 2007. If the average cost in 2006 was $2.069,

First, find out what the 73% of $2.069 is. We do this by multiplying 2.069 by 73/100: 2.069*(73/100) = $1.51037.

Next, add the number you found above to the original 2006 price: $2.069 + $1.51037 = $

3.57937

.

So the average cost of regular gasoline in 2007 in North Carolina was approximately $3.58 per gallon (rounding to the nearest cent).

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a
108 degrees

b
24 degrees

c
156 degrees

d
72 degrees

Answers

According to the Alternate Exterior Theorem, alternate exterior angles are congruent. So:

3x = 4x - 24
x = 24

But, this question is not over. This question is asking for angle RST, not x.

3(24) = 72

Hope this helped!

Taylor buys 6 bus tickets. He pays for the tickets with a $20 bill. Let c represent the cost of each ticket. Which expression shows how much change Taylor will receive?

Answers

20 = 6c

your expression will be 20 - 6c 

hope this helps

A computer that costs $1099 last year cost $999 this year. What is the percent change? Explain please.

Answers

only like 5 % or what are your options the price only went down 100$

Answer:

9.1

Step-by-step explanation:

Formula; Higher value-lower value/Original value x 100

Solve;

$1099-$999/$1099 x100

= 100/1099 x100

= 9.0991810737

Round = 9.1

[RevyBreeze]

The temperature at noon is 75 Fahrenheit. The temperature drops 3 degrees every half hour. What is the temperature at 4 p.m.

Answers

75 - 3 every half hour so minus 6 every hour,
between noon and 4pm, there are 4 hours
4*6 = 24
75 - 24 = 51
Noon is 12 pm.

Temperature drops by 3° every 30 minutes.

There are 240 minutes in 4 hours.

So, in 4 hours or 240 minutes, the temperature dropped by 24°.

By 4 pm, the temperature is 51°F.

what is the slope of y = 3.9

Answers

Assuming that there is no x term, the answer is 0. 

The slope is 0 because this line is a flat horizontal line.
We can write y = 3.9 as y = 0x+3.9

The equation y = 0x+3.9 is in the form y = mx+b where m = 0 is the slope. 

what are the steps to solve multi-step equations? (in 5 steps)

Answers

The steps to solve multi-step equations are;

1. Parenthesis

2. Exponents

3. Multiplication/division

4. Addition/subtraction

What does it mean to solve an equation?

An equation represents equality of two or more mathematical expression.

To solve an equation, they usually mean to find the values of the unknowns for which that equation would be true (the equality between expressions should hold true for those values).

For the Solutions to an equation are those values of the variables involved in that equation for which the equation is true.

The steps to solve multi-step equations are;

1. Parenthesis

2. Exponents

3. Multiplication/division

4. Addition/subtraction

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A town received 2 3/4 inches of rain one day and 5 2/5 inches the next day .How many of inches of rain fell in the town over the two days

Answers

2 3/4 + 5 2/5 = 2.75 + 5.4 = 8.15
⇒ 8.15 inches of rain fell in the town over the two days.

A 6-pound bag of sugar contains 681 one-teaspoon servings and costs $4.49. A batch of muffins uses 1 cup of sugar. How many whole batches can you make if you use as much of the sugar as possible? What is the cost of sugar for each batch? (1 cup = 48 teaspoons; do not consider leftover sugar in the cost calculation.)

Answers

Final answer:

A 6-pound bag of sugar can make 14 whole batches of muffins and the cost for sugar per each batch is approximately $0.32.

Explanation:

The subject of this question is in the field of Mathematics, specifically dealing with ratios and proportions. To determine the number of whole batches of muffins a bag of sugar can make, you will first need to find the number of cups in the bag. Given that 1 cup is equivalent to 48 teaspoons and the 6-pound bag of sugar contains 681 teaspoons, divide 681 by 48 to get roughly 14.1875. Since we cannot make a fraction of a batch, round down to 14, which is the number of whole batches we can make.

To find the cost per batch, divide the total cost ($4.49) by the number of batches (14) to get a per-batch cost of roughly $0.32.

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A bakery uses 48 pounds of flour each day. It is open for business 28 days each month. How many pounds of flour does the bakery use each month? A.1,500 pounds , B.1,344 pounds , C. 800 pounds ,Or D.76 pounds?

Answers

The answer is B.1344 because they use 48 each day and on 28 48x28=1344
48*28=1344 that is the answer

To find the value of an expression is to _______________.

variable

squared

algebra

evaluate

Answers

evaluate , I've had this question before and I got it right

unit price for 3 1/4 yards for 13$

Answers

3.25            x
-------   =   ------ = 0.25 as a decimal and 1/4 as a fraction
 13              1
Hope this helps!

Evaluate a + b for a =34 and b =-6

Answers

I believe the answer is 28
34- 6=28
28 is your answer


Leo and Robyn have received projects' funding of $39 655. They decide to share the funding in the ratio of 2:3 (Leo:Robyn) for their own research. How much does each person receive?

can you please help me to solve this?

Answers

the ratio 2:3 Leo:Robyn means that Leo gets 2/5  ( 2 / (2+3)  of the funding and Robyn gets 3/5.

Leo gets 2/5 * $39655 =  $15,862

RobYn gets 3/5 * 39655  = $23,793

Leo and Robyn receive $15,862 and $23,793 respectively.

What is the difference between a ratio and a proportion?

A ratio is an ordered pair of integers a and b expressed as a/b, with b never equaling 0. A percentage is a mathematical expression in which two ratios are specified to be equal.

Given data;

Total funding= $39655.

Funding in the ratio = 2:3

If x is the part by which one person receive;

The equation is found as;

2x+3x=$39655.

5x=$39655.

x=7931

Leo gets;

2x=2×$7931= $15,862

Robyn gets;

3x=3×$7931== $23,793

Hence,Leo and Robyn receive $15,862 and $23,793 respectively.

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Maggie’s brother is 6 years younger than three times her age. The sum of their ages is 42. How old is Maggie?

Answers

x = Maggie's age

y = The brother's age

x + y = 42

y = 3x - 6

Using the substitution property, we can replace y in the first equation with the 3x - 6 in the second equation like so:

x + (3x - 6) = 42

Then solve this equation for x like so:

x + (3x - 6) = 42

x + 3x = 48 (Add 6 to both sides)

4x = 48 (Simplify)

x = 12 (Divide both sides by 4)

This shows that Maggie's is 12 years old. In order to prove this, you must check your work. In order to do this, first plug your answer back into the original equation like so:

x + y = 42

12 + y = 42. (Plug in answer)

y = 30 (Subtract both sides by 12)

This shows that Maggie's brother is 30 years old. The final step to proving this is to plug both of your answers into the second equation to make sure that your answers are within the constraints set by the problem. Do this like so:

y = 3x - 6

30 = 3(12) - 6 (Plug in answers)

30 = 36 - 6 (Simplify)

30 = 30 (Simplify)

Because the equation is balanced, your answers are correct. So, to answer your question, Maggie is 12 years old.


A model for the path of a toy rocket is given by h= -68t - 4.9t^2


How long does it take the rocket to hit the ground? How high was the rocket at 2 seconds? What is the maximum height of that rocket and how long does it take that rocket to reach it's maximum height?

Answers

The right equation has to be h= 68t - 4.9t^2, or you will get negative times.

I will show you the solution using h = 68t - 4.9t^2

1) How long does it take the rocket to hit the ground?

ground level => h = 0

=>  68t - 4.9t^2 = 0

factor the polynomial => - t (4.9t - 68) = 0

=> t = 0 (which is when the rocket takes off) and 68 + 4.9t = 0 (which is when the rocket to return and hit the ground).

4.9t - 68 = 0 => t = 68 / 4.9 = 13.88 s

Answer: 13.88 s

2) How high was the rocket at 2 seconds?

replace t = 2 in the function h = - 4.9t^2 + 68

=> h = -4.9 (2^2) + 68 = 48.4 m

Answer: 48.4 m

3) What is the maximum height of that rocket and how long does it take that rocket to reach it's maximum height?

Find the vertex of the parabola.

You should know that the vertex is at the midpoint between the two roots (zeros of the polynomial).

You already found the zeros, t = 0 and t = 13.88

So0 the vertex is at t = [0 + 13.88] / 2 = 6.94 s

And the maximum height is h = - 4.9 (6.94)^2 + 68 = 168 m

Answer: h max = 168 m, t = 6.94 s.
Final answer:

The duration for the rocket to hit the ground, its height at 2 seconds, and its maximum height can be calculated using the given quadratic equation for height over time. The maximum height is determined by finding the vertex of the parabola.

Explanation:

To determine how long it takes the toy rocket to hit the ground, we need to set the equation for height h to zero and solve for time t. The model for the path of a toy rocket is given by [tex]h = -16t2 - 4.9t2[/tex]. To solve for t, we factor the right side:

[tex]h = -4.9t(16 + t)[/tex]

Since h = 0 when the rocket hits the ground, we set [tex]-4.9t(16 + t) = 0[/tex] and solve for t. There are two solutions: t = 0 (when the rocket is launched) and the positive solution which is when the rocket hits the ground. We disregard the solution t = 0 and solve for the positive solution to find out how long it takes to hit the ground.

To find out how high the rocket was at 2 seconds, we simply plug t = 2 into the original equation:

[tex]h = -16(2)2 - 4.9(2)2[/tex]

And solve for h to get the height at 2 seconds.

To determine the maximum height of the rocket, we need to find the vertex of the parabola represented by the given equation, which is a quadratic function of t. Since the coefficient in front of t2 is negative, the vertex will give us the maximum height. The time it takes to reach the maximum height is given by t = -b/2a, where a and b are coefficients from the equation [tex]h(t) = at2 + bt + c.[/tex] In this case, a = -4.9 and b = -68.

The calculations must be done to find the precise values for the time to hit the ground, the height at 2 seconds, and the maximum height of the rocket, along with the time it takes to reach it.

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Express 152 as a product of prime factors in index form

Answers

Google it. Sorry I don't know
76x2
38x2
19x2
Answer: 2x2x2x19

Arrange these from smallest to largest, 1/6,0.29,23%,3/5,0.027

Answers

1/6 = 0.166
0.29
23% = 0.23
3/5 = 0.6
0.027

Ans: 0.027, 1/6, 23%, 0.29, 3/5
Final answer:

To arrange the numbers 1/6, 0.29, 23%, 3/5, and 0.027 from smallest to largest, convert them to decimals and then compare. The order from smallest to largest is: 0.027, 1/6 (0.166...), 23% (0.23), 0.29, and 3/5 (0.6).

Explanation:

To arrange the numbers 1/6, 0.29, 23%, 3/5, and 0.027 from smallest to largest, we first need to convert them all to the same format. We can convert percentages to decimals by dividing by 100 and fractions to decimals by division. Here are the conversions:

1/6 = 0.166...0.29 (already a decimal)23% = 0.233/5 = 0.60.027 (already a decimal)

Now that they are all in decimal form, we can easily compare them:

0.027 (smallest)1/6 (or 0.166...)23% (or 0.23)0.293/5 (or 0.6, largest)

During a card game you give someone 5 cards then someone else gives you 7. Write an addition expression to describe this situation. Then find the sum.

Answers

c will equal the total amount of cards.

c = (-5) + 7

c = 2

You have 2 additional cards.
x will be total amount of cards you have in the beginning
g will be the final amount


x - 5 + 7 = g
x +(7-5) = g
x + 2 = g

answer

x + 2 = g 

hope this helps

HELP ME THANKSSSS :)

Answers

Point M for this triangle is called the Centroid.

What is the relationship between the 1s in 911,147,835?

Answers

the 1 is in the:

hundred thousands place
millionth place
and ten millionth place

hope this helps

Andy ate 3/4 cup of oatmeal on Monday and 1/4 cup oatmeal on Tuesday how much oatmeal did he eat on the 2days

Answers

Andy ate 1 cup of oatmeal (D).  3/4 + 1/4 is 1 whole ( or 1 cup in this situation).
To solve this you add 3/4 by 1/4.
When adding fractions make sure to only add the numerators (top number) and not the denominators (bottom number). So,

3/4 + 1/4 = 4/4

The simplest form of 4/4 is 1. So, the answer is 1.


I hope this helped you!

for what values of x will the result of 5x be greater than 1

Answers

Anything greater than (1/5) that is positive

Ex. (1/4), (1/3), (1/2), 1, 2, 3, 4, 5

you randomly pick two numbers from 1 to 9. If you could pick the same number twice and the first of the two numbers are in less than five in the probability that the sum of the two numbers is less than five is

Answers

Alright, so the number is less than 5, we pick it twice, and the sum (2*number) is less than 5, we have 2 options - 2 or 1. 3 or more doesn't work because 3*2=6. The probability of choosing 2 is 1/9, and choosing 2 again is 1/9. Since they don't have anything to do with each other, we multiply 1/9 by 1/9 to get 1/81 as the chance of choosing 2 twice. Since we can have 1 twice too, we add 1/81 to 1/81 to get 2/81

PLEASE HELP ON 25! ASAP!!

Answers

??????????????????????????????????????????

A pair of vertical angles may also form a linear pair true or false?

Answers

It is false, because vertical angles are the same size angles, and a linear pair has to add up to 180 degrees.

Hope this Helps!

If a person weighs 240 pounds on Earth, what would be the difference in weight of the same person on Mars and on the Moon (based on the table and graph)?

Answers

Answer:

C

Step-by-step explanation:

The person weighs 560 more on Mars than on the moon.

On comparing the weight of the individual on Earth, Mars and Moon, we concluded -

W[Earth] > W[Mars] > W[Moon]

What is Weight ?

Weight is the force exerted by the earth on an object at the surface of the earth. Mathematically -

W = m x g

where -

[m] is the mass of object

[g] is acceleration due to gravity

Given is a person who weighs 240 pounds on Earth.

The weight of the individual in kg m/s² (Newtons) on earth would be -

W[Earth] = 240 x 0.45359237 x 9.8 = 1066.84 N

The weight of the same individual on mars would be -

W[Mars] = 240 x 0.45359237 x 3.11 = 333.56 N

The weight of the same individual on moon would be -

W[Moon] = 240 x 0.45359237 x 1.625 = 176.90 N

Therefore, we can conclude that W[Earth] > W[Mars] > W[Moon].

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round 76,912 to the nearest ten thousand

Answers

80,000 i hoped this helped

80000 can be the nearest ten thousand of 76912

hope this helps you

Rachel’s phone company limits her monthly data usage to 3 gigabytes. She has already used 2,645 megabytes. How many gigabytes of data does she have left this month?

Answers

It would be .355 gigabytes because 3 gigabytes =3000 megabytes so 3000 minus 2,645 = 355 megabytes and 355 megabytes as gigabytes =.355 gigabytes 
There are 1,000 megabytes per every one gigabyte. So 3 gygabites times 1,000 is equal to 3,000 megabytes. So, 3,000 megabytes minus 2,645 megabytes is equal to 355 megabytes. She has 0.355 gigabytes left this month.

A restaurant took 1/10 of an hour to use 1/6 of a package of napkins at this rate how many hours would it take to use the entire package

Answers

36 minutes is how long it would take to use a package of napkins
1/10 of an hour is 6 minutes. So if they used 1/6 of a package in 6 minutes, then 6/6 of the package, or the entire package would be used up in 36 minutes (6*6)
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