Answers
9514 1404 393
Answer:
2(x +3) = 3012Step-by-step explanation:
When x represents the number, "the sum of 3 and a number" is (x+3). Twice that sum is 2(x+3). "Is 30" means this expression is equal to 30:
2(x +3) = 30 . . . . an equation for the given conditions
__
We can solve this equation by dividing by 2:
x + 3 = 15
x = 12 . . . . . . subtract 3
The number is 12.
Related Questions
What’s a better buy? 3 pounds of apples for $1.89 or 1 pound of apples for $.79?
WILL MARK BRAINLYIEST ANSWER ASAP PLZ!
Answers
Answer:
3 pounds of apples for $1.89
Step-by-step explanation:
1 pound of apples for $.79
so 3 pound x 0.79= 2.37
So 1.89 for 3pound is the better buy
how do i check 8d-25=3d
Answers
Answer:
d=5
Step-by-step explanation:
That is the answer if that is what you were looking for.
your welcome
8d-25=3d
8d-3d=25
5d=25
d=5
d=5
8d-25=3d
8(5)-25=3(5)
40-25=15
15=15 so it’s right
4.131313.... as a fraction and a mixed number
Answers
409/99
4 13/99
Step-by-step explanation:Hi there !
4.131313.. = 4.(13) = 4 13/99 = (4*99+13)/99 = 409/99
Good luck !
The volume, V, of a rectangular prism is determined using the formula V=lwh, where l is the length, w is the width, and h is the height of the prism.
Using this formula, what is the width of a rectangular prism that has a volume of 138.24 cubic inches, a height of 9.6 inches, and a length of 3.2 inches? Round to the nearest tenth.
0.2 inches
4.5 inches
46.1 inches
414.7 inches
Answers
Answer:
4.5inches
Step-by-step explanation:
Given the volume of a prism expressed as:
V =lwh where:
l is the length
w is the width,
h is the height of the prism.
Given
V = 138.24in³
h = 9.6in
l = 3.2in
w = ?
Substitute the given values into the formula to get the width
138.24 = 9.6*3.2*w
138.24 = 30.72w
w = 138.24/30.72
w = 4.5in
Hence the width of the rectangular prism is 4.5inches
The width of the rectangular pyramid that has a volume of 138.24 cubic inches, a height of 9.6 inches, and a length of 3.2 inches is 4.5 inches.
Volume of a rectangular pyramid:v = lwhwhere
l = length
w = width
h = height
v = 138.24 inches³
h = 9.6 inches
l = 3.2 inches
w = ?
138.24 = 9.6 × 3.2 × w
138.24 = 30.72w
w = 138.24 / 30.72
w = 4.5 inches
learn more on volume of a rectangular pyramid here: https://brainly.com/question/13410734?referrer=searchResults
A bowling alley charges its customers an hourly rate to bowl plus shoe rental. The hourly rates are per lane.
A linear model of this situation contains the values (2, 41) and (3, 59.25), where x represents the number of hours bowled on one lane, and y represents the total cost for bowling.
What is the rate of change in this linear model?
Answers
Answer: 18.25
Step-by-step explanation:
Answer:
Step-by-step explanation:
dvj 2355
The unit digit in the square of the number 572 is
Answers
Answer:
The unit digit of the square of 572 is 4Step-by-step explanation:
In this problem, we are expected to tell what number is at the unit position of the square of 572.
firstly, what is the square of 572.
this is gotten as = 572^2
=572*572
=327184
from the result, the value at the unit position is 4
The unit digit of the square of 572 is 4
In the following diagram which is not drawn to scale, why can't both line AB and line AC be perpendicular to line BC?
Answers
Answer:
AC and AB both can't be perpendicular to line BC because if they were, then AB and AC would be parallel to each other and would never intersect. In this diagram, AB and AC intersect, so it it not possible.
Perpendicular lines meet at a right angle.
AB and AC cannot be perpendicular to BC because AB and AC are not parallel
From the diagram, we can see that line AB and line AC intersects at point A.
This means that both lines are not parallel
For any two lines to be perpendicular to a third line, the two lines must be parallel to each other.
So, we can conclude that:
Lines AB and AC cannot be perpendicular to line BC because both lines are not parallel.
Read more about parallel and perpendicular lines at:
https://brainly.com/question/12731518
What is the effective annual rate for an APR of 10.60 percent compounded quarterly?
Answers
Answer:
The effective annual rate is 11.03%
Step-by-step explanation:
The effective interest rate is calculated through the formula:
[tex]r = (1 + i/n)^n - 1[/tex]
In this formula, r represents the effective interest rate, i represents the stated interest rate or APR, and n represents the number of compounding periods per year.
For a quarterly compounded interest, n=4. The APR i=10.60%=0.106
Given an APR r, the effective annual rate for a quarterly compound is:
[tex]r = (1 + 0.106/4)^4 - 1=1.0265^4-1[/tex]
[tex]r=1.11029-1=0.1103[/tex]
The effective annual rate is 11.03%
A car travels 26.35 miles with one gallon of gas. The tank
can hold 21.5 gallons of gas. How many miles can the car
travel on a full tank of gas.
Explain the error in the problem and then solve correctly.
Answers
Answer:
566.525
Step-by-step explanation:
26.35 × 21.5
Complete the sentence.
The amount of energy it takes to move a couch is most likely to be a function
of the
A. age of the couch
B. weight of the couch
C. color of the couch
O O
D. day of the week the couch is being moved
Answers
The amount of kinetic energy required to move a couch is most likely to be a function of the weight of the couch.
What is kinetic energy?In physics, the kinetic energy of an object is the energy that it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity.
Kinetic energy is directly proportional to the mass of the object and to the square of its velocity.
Learn more about kinetic energy here
https://brainly.com/question/12669551
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Round 1(4),883 to the place value in parenthesis.
1. 15,000
2. 10,000
3. 14,000
4. 14,900
Answers
Answer:
the answer is number 4 because you just put all of them in parenthesis
I really need help with this question, please!
Answers
Answer:
The triangles are not similar to each other .
a tank holds 480 gallons of fuel. if it drained at a rate of 120 gallons Per minute, it will be empty in __ seconds
Answers
Answer:240 seconds
Step-by-step explanation:
what is a thesis statement?
Answers
Answer:
A thesis statement is a claim
Step-by-step explanation:
The thesis statement is the sentence that states the main idea of a writing assignment and helps control the ideas within the paper. It is not merely a topic. It often reflects an opinion or judgment that a writer has made about a reading or personal experience. For instance: Tocqueville believed that the domestic role most women held in America was the role that gave them the most power, an idea that many would hotly dispute today.
PLEASE HELP ME!!!
Solve the following system of equations using the elimination method.
2x + 4y = 10
–2x + y = –15
Question 9 options:
A)
(–2,7)
B)
(3,1)
C)
(8,–3)
D)
(7,–1)
Answers
Answer:
The answer is D
Step-by-step explanation: I solved by subsitution and found y=2x-15 So therefore 2x+4(2x-15)=10 and then x=7 and that was the only answer with7 as x but to check I did y=2(7)-15 and y=-1
1 inch = 2.54 centimeters. How many centimeters long is an 18-inch ruler?
Answers
Answer:
45.72 cm
2.54 x 18
Answer:
45.72 centimeters
Step-by-step explanation:
If an inch is 2.54cm, an 18in ruler would be 18 times as many centimeters...
2.54x18=45.72
Hope this helps C:
Need Help please i will mark brainliest when it lets me
Answers
Answer:
The answer is C, reflection over the y-axis.
Step-by-step explanation:
It is reflection because everything was flipped over the y-axis.
2. Jack’s parents were planning a big birthday party for him. Answer the questions below. Show your work for all parts.
a. His parents spent $4.49 on each of 6 goodie bags. How much did they spend on goodie bags?
b. They spent $150 to rent a bounce house for 8 hours. How much is the hourly rate for the rental?
c. If the parents spent a total of $400 on everything for the party, how much more did they spend in addition to what was spent in parts (a) and (b)?
Answers
A. Do 4.49 times 6 B. Do 150 divided by 8 C. I belive you add the answers for A and B and then subtract that from 400 and then that’s your answer for part C
Given m∠12 + m∠15=180°
Which lines are parallel, if any must be parallel, based on the given information?
1. c || d by the converse of the alternate interior angles theorem
2. a || b by the converse of the corresponding angles theorem
3. c || d by the converse of the same-side interior angles theorem
4. Not enough information to make a conclusion.
Answers
Answer:
the answer is choice 3
c is parallel to d by the converse of the same side interior angles theorem
Step-by-step explanation:
Answer:
3. c || d by the converse of the same-side interior angles theorem
Step-by-step explanation:
Angles 12 and 15 are same-side interior angles of lines c and d cut by transversal a.
Answer:
3. c || d by the converse of the same-side interior angles theorem
Convert 36 inches to feet. There are 12 inches in a foot.
A. 432 feet
B. 3 feet
C. 6 feet
D. 360 feet
Answers
Answer:
B
Step-by-step explanation:
36/12=3 feet
36 inches • (1 foot/12 inches) = 3
help ????????!???????????!???????
Answers
Answer:
1/8= 12.50
1/4 =250 apologize for not being able to answer the last one
suppose that y varies directly with x and y=10 when x=8. What is x when y=30?
Answers
10 = 8k
10/8 = k
k = 1.25
30 = 1.25x
30/1.25 = x
24 = x
X = 24
Find the axis of symmetry for this parabola:
y = -4x2 - 8x - 7
Answers
Answer:
Step-by-step explanation:
If we want to find the axis of symmetry of the parabola of [tex]y=-4x^{2} -8x-7,[/tex] we would use the formula of [tex]-\frac{b}{2(a)}[/tex] to find it.
b=-8
a=-4
so the formula would look like this [tex]-\frac{-8}{2(-4)}[/tex], simplify it >>>[tex]-\frac{-8}{-8}[/tex] which is -1
So -1 would be the axis of symmetry
*It would mean a lot to me if you guys gave this post a "THANKS"
Find the distance FG between the points F (0,-7) and G (-6,-3) . Round your answer to the nearest tenth, if necessary
Answers
Answer:
7.2
Step-by-step explanation:
I will give you branilest!
The EPA estimated that in 2013, the average amount of garbage produced in the United States was 4.4 pounds per person per day. At that rate, how long would it take YOUR family to produce a ton of garbage? (A ton is 2,000 pounds.)
Answers
Answer:
my family has six people so 75.76 days
Step-by-step explanation:
multiply 4.4 with the number of people in your family, then divide 2000 by that number
example:
4.4 x 6= 26.4
2000/26.4 = 75.75 which rounds to 75.76
Which of the following exponential equations shows a reflection over the y-axis, a vertical
stretch by a factor of 2, and horizontal shift right 1.
a. y = -2(4)* – 1
b. y = -2(4):-1
c. y = 2(4)-x-1
d. y = 4(2)-x-1
Answers
Answer:
we are given
parent function as
(1)
vertical stretch of factor 2
so, we can multiply y-value by 2
then a shift right of 3 units
so, we can replace x as x-3
(2)
a shift left by 2 units
we can replace x as x+2
then a horizontal shrink factor of 1/2
so, we can multiply by 2 to x-value
then a shift down of 5 units
we can subtract y-value by 5
so, we get
(3)
a shift to the right 1 unit
we can replace x as x-1
stretched vertically by a factor of 1/2
we can multiply y-value by 1/2
then is shifted down 4 units
we can subtract y-value by 4
(4)
reflected across the x-axis
we can multiply y-value by -1
tretched vertically by a factor of 3
multiply y-value by 3
shifted left 7 units
we can replace x as x+7
Step-by-step explanation:
What are the coefficients for the binomial expansion of (a + b)3?
O 1, 4, 6, 4, 1
O 1,1
O 1, 2,1
O 1,3,3, 1
Answers
Answer:
D
Step-by-step explanation:
Need help with question 5!!!!! ASAP PLEASE!!!
Answers
Answer:
B. 2-5 the answer is B. 2-5
Answer:
I think b
Step-by-step explanation:
-9(-2 -9)+(-16)-
——————
-8
Answers
Answer:[tex]-10\frac{3}{8}[/tex]
Step-by-step explanation:
I dont know if the live on the other side of 16 is a mistake but if it is than thats the answer above.
The conversion of ammonium cyanide to urea is a second-order reaction. This means that the concentration C of ammonium cyanide at time t is given by 1/C = kt + 1/C0, where C0 is the initial concentration and k is the rate constant. Assume the initial concentration is known to be 0.1 mol/L exactly. Assume that time can be measured with negligible uncertainty.
a. After 45 minutes, the concentration of ammonium cyanide is measured to be 0.0811 ? 0.0005 mol/L. Estimate the rat? constant k, and find the uncertainty in the estimate.
b. Use the result in part (a) to estimate the time when the concentration of ammonium cyanide will be 0.0750 mol/L, and find the uncertainty in this estimate.
Answers
Answer:
your answer could be A
Step-by-step explanation: