F(x)=2x+4 and g(3)=x^2+3
1. 34.5x when x = 4.2
evaluate the exprestion
Car A drove 251.25 miles in 3 hours and 45 minutes. What was Car A's speed in mph?
Answer:
73 MPH
Step-by-step explanation:
need this, please. real fast
Answer:
y=(-9/5)x-3
Step-by-step explanation:
to find m:substitute -5 in x value,-3 in c value and 6 in y value in the equation y=mx+c.then,rewrite equation by substituting value of m and c
Christopher is hanging Christmas lights along the perimeter of his house by using his 15 foot ladder. The base of the ladder is placed 4 feet away from the base of his house. How far up the house does his ladder reach?
Answer:
14.45 feet
Step-by-step explanation:
The set up is a right angled triangle;
The length of the ladder = hypotenuse = 15foot
The base of the ladder is the adjacent = 4feet
The height of th house is the opposite = x
Using the pythagoras theorem;
hyp² = opp² + adj²
15² = opp²+4²
opp² = 15²- 4²
opp² = 225 - 16
opp² = 209
opp = 14.45feet
Hence the ladder reaches 14.45 feet up the house
Karina bought 4 packages of the type of gum shown.
Fresh Mint Gum
Contains 3 Extra Bucks
• Each package contains 3 more than the usual number of sticks of gum
Karina bought a total of 60 sticks of gum.
Which equation could be solved to find n, the usual number of sticks of gum in each package?
0 4(n - 3) = 60
O4(n + 3) = 60
o 4n - 3 = 60
O 4n + 3 = 60
Answer:
Step-by-step explanation:4n+3=60
What is the solution to 39/45 - 2/3
Answer:
0.2
Step-by-step explanation:
just subtract
If X=-4 which inequality is true
The correct answer would be -4 because -4 is equal to -4
A leather jacket is listed at $230 the discount rate is 25% off the list price what is the sales price of the jacket?
Answer:
Discount selling price= $172.5
Step-by-step explanation:
Giving the following information:
Selling price= $230
Discount rate= 25%
To calculate the discount selling price, we need to use the following formula:
Discount selling price= selling price*(1 - discount rate)
Discount selling price= 230* (1-0.25)
Discount selling price= $172.5
what expressions represent the distance between -3 and 4 on the number line
Answer:
[tex]\\A. |4+3|\ , E. |-4-3|[/tex]
Step-by-step explanation:
[tex]We\ know\ that,\\Distance\ between\ two\ points\ on\ the\ graph= \sqrt{(x_2-x_1)^2+(y_2-y_1)^2} \\Here,\\Point\ 1=(-3,0)\\Point\ 2=(4,0)\\Hence,\\Distance\ between\ Point\ 1\ and\ 2\ =\sqrt{(4-(-3))^2+(0-0)^2}\\ Hence,\\Distance\ between\ Point\ 1\ and\ 2\ =\sqrt{(4-(-3))^2}\\Distance\ between\ Point\ 1\ and\ 2\ =(4-(-3)\\=4+3\\As\ |-4-3|\ and\ |4+3|\ are\ absolute, they\ can\ be\ additively\ equal\ to\ each\ other.\\Hence,\\|-4-3|=|4+3|[/tex]
Tim had 55% off all the baseball cards ever made by Bob's Publishing Company. If he has 960 cards, how many had Bob's Publishing Company made?
Answer:
The answer is 528..
A tank full of water is leaking at a constant rate for 15 minutes. The equation
y=-8x+ 500
describes the amount of water in the tank, where y is the number of liters and
xis the number of minutes that has elapsed since the tank started to leak.
Which statement is true?
A. There were 8 liters in the tank when the leak started, and it is decreasing by 500 liters per minute.
B. There were 8 liters in the tank when the leak started, and it is increasing by 500 liters per minute.
C. There were 500 liters in the tank when the leak started, and it is decreasing by 8 liters per minute.
D. There were 500 liters in the tank after 15 minutes, and it is
decreasina bv 8 liters per minute.
Answer:
C. There were 500 liters in the tank when the leak started, and it is decreasing by 8 liters per minute.
Step-by-step explanation:
-8x is the rate of the leak and 500 is the initial value for water in the tank.
Which is an equation for the line that contains (-1, -2) and has a slope of -5?
Lanny has 3/5 yard of ribbon he cuts it into equal pieces that are each 1/10 yard how many pieces can he cut?
Answer: 6 pieces
Step-by-step explanation:
3/5= 6/10
[tex]\frac{6}{10} / \frac{1}{10}= 6[/tex]
Quadrilateral JLKM has vertices j(7,9),k(0,-4),L(2,2), and M (5,-3).If the figure is reflected across the line y=x,What are the coordinate of M
plant rice Step-by-step explanation:
put water in bole put grass throw rice and make rice
Raju took 5/6 h to complete his mathematics homework. He took 1/5 h less to complete his english homework. how many hours did raju take to complete his english homework? what was the total time spent by raju on his homework?
Answer:
English homework = 19/30h or 38 minutes
Total time spent = 22/15h or 88 minutes
Step-by-step explanation:
Mathematics homework = 5/6h
= 5/6 × 60
= 300/6
= 50 minutes
He took 1/5 h less to complete his english homework.
English = 5/6h - 1/5h
= 25h-6h/30
= 19/30h
= 19/30 × 60
= 1,140/30
= 38 minutes
English homework = 19/30h or 38 minutes
Total time spent on his homework = mathematics homework + English homework
= 5/6h + 19/30h
= 25h+19h/30
= 44/30h
= 22/15h
= 22/15 × 60
= 1,320 / 15
= 88 minutes
what is the slope of the graph please help!!
Answer:
D 3
Step-by-step explanation:
Answer:
D) 3
Step-by-step explanation:
The rise of the line is 3 and the run is 1. Rise/Run is the answer so in this case, it is 3/1 or 3. Since the line rises left to right, the slope is positive.
Hope it helps!
What equation can find the nth term in the sequence a3 =0, a4 = 6 a5= 12, a6= 18 and a7, = 24
Answer:
8=30
Step-by-step explanation:
you start of with 3=0 then it goes to 4=6 and then it goes to 5=12 as you go on you start noticing a pattern which is add 6 to the second number hope this helped i don't know if this is correct tho please comment and tell me if this correct im so sorry if it is wrong just using my knowledge
URGENT LAST QUESTION OF MY END OF QUARTER TEST! 30 POINTS
find JL in rectangle JKLM if JK=12 and JM=9.
Answer:
15
Step-by-step explanation:
If you do the Pythagorean theorem or use the right triangle triples, you’ll get 15 as your answer, hope this helps :)
CAN YALL PPLZZZZ HELP ME I NEED HELPPPPPPPPPPPPP
The base of a 25-foot ladder is positioned 10 feet from the bottom of the building it leans against. An extension can be pulled out to make it a 30-foot ladder.
Part A
Without the extension, can the ladder reach a window that is 24 feet above the ground? Justify your reasoning with mathematics.
Answer:
Sorry can't help
Step-by-step explanation:
:p
Answer:
no it can not
Step-by-step explanation:
It is to short
August is making dinner for 8 people. She opens 7 cans of soup. Each can is 16 ounces. If everyone gets the same amount of soup, how much soup will each person get?
This is for my sister, and her teacher said that the correct answer is 3.5 ounces. If anyone gets this answer, please show how you got the answer...thank you!
Answer:
14oz soup/ person
Step-by-step explanation:
the answer would be 14oz of soup/person
multiply 7 (cans of soup) by 16 (oz per can)
7*16=112
divide 112 (oz of soup total) by 8 (number of people feeding)
112/8=14
In many parades, flowers are used to decorate the floats. The table below shows the number of flowers used in each row of a parade float.
1
54
2
58
3
62
4
66
Which equation best describes these data?
Answer: C. n = 4r + 50
Step-by-step explanation:
The equation is in the form: y =mx + c
y is the number of flowers used.
x is the row number.
Solving for m. Pick any two points. (1, 54) and (2, 58)
m = (Y₂ - Y₁) / (X₂ - X₁)
= (58 - 54) / (2 - 1)
= 4
Solving for c. Use a point to fill up the formula and find c; (1, 54)
y = mx + c
54 = 4 * 1 + c
c = 54 - 4
c = 50
Formula will therefore be;
y = 4x + 50
or;
n = 4r + 50
Solve the compound inequality: 2x - 4 5
Answer: 2x-45
Step-by-step explanation:
Let's simplify step-by-step.
2x−45
There are no like terms.
Answer:
=2x−45
plz hel asap plz brainliest
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Answer: B
Step-by-step explanation:
There are several ways to solve this problem, but I think the easiest way is just to find the mean.
There are 12 total data points, and adding them all up you get 266.
mean = 266/12 = 22.167
The line in the middle of the box plot represents the mean, so the answer must be B.
Answer:
B
I hope this helps!
Which rule explains why these triangles are congruent?
AAS
SAS
ASA
These triangles cannot be
proven congruent
Answer: SAS
Step-by-step explanation: by using the reflective property the line in the center it’s the missing “S”
A steel ball is traveling through water with a speed of x meters per second, where x is positive. The drag force, F, in newtons, N, is: F = 0.5 + 0.004(x + 50)(x-2.5). At what speed in meters per second does the ball have a force of 0.5 N, on it?
Answer:
x = 2.5m/s.
Step-by-step explanation:
Given that F = 0.5 + 0.004(x + 50)(x – 2.5), where x is the speed in m/s and F is the force in N. To know the speed, x, with F = 0.5N, we have:
0.5 = 0.5 + 0.004(x + 50)(x – 2.5)
This gives
0.004(x + 50)(x – 2.5) = 0 (after adding –0.5 to both sides).
For the multiplication to be 0, (x + 50)(x – 2.5) = 0 because 0.004 is not equal to 0.
Hence
x = –50 or x = 2.5
Since it is said from the question that x is positive then x = 2.5m/s.
Matthew drove 15 miles in į hour. What was Matthew's average speed?
O A. 90 miles per hour
O B. 62 miles per hour
O C. 124 miles per hour
O
D. 60 miles per hour
Pls HELP
Answer:
d. 60 miles per hour.
Step-by-step explanation:
What is the value of 1 – 2sin^2(105°)?
Answer:
Step-by-step explanation:
1-2sin²∝=cos 2∝
1-2sin²(105)=cos(2×105)
=cos 210
=cos (180+30)
=-cos 30
[tex]=-\frac{\sqrt{3}}{2} \\[/tex]
The correct answer is option A which is the value of the expression is -√3/2.
What is trigonometry?The branch of mathematics sets up a relationship between the sides and the angles of the right-angle triangle termed trigonometry.
The expression will be solved as:-
1-2sin²∝=cos 2∝
1-2sin²(105)=cos(2×105)
1-2sin²(105=cos 210
1-2sin²(105=cos (180+30)
1-2sin²(105=-cos 30
1-2sin²(105 = -√3/2.
Therefore the correct answer is option A which is the value of the expression is -√3/2.
To know more about Trigonometry follow
https://brainly.com/question/24349828
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EASY ANSWER!! Which ordered pair is a solution of y<-4x – 5?
Answer:
5x -4 ?
Step-by-step explanation:
Which line is parallel to the line given y=- 4/3x+1
Answer:
Any other line with this slope (-4/3)
Step-by-step explanation:
A quick look at y= (-4/3)x + 1 tells us immediately the slope of the given line is (-4/3). Any other line with this slope (-4/3) is parallel to y= (-4/3)x + 1. Next time, please share the answer choices. Thank you.
