Solve for x: 2/5=4/x
9514 1404 393
Answer:
x = 10
Step-by-step explanation:
Using your number sense, you recognize that a fraction equivalent to 2/5 that has 4 in the numerator is 4/10. This tells you x = 10.
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The usual instructions for solving this algebraically are to "cross multiply", then divide by the coefficient of x.
2/5 = 4/x . . . . given
2x = 20 . . . . . multiply by 5x on both sides
x = 10 . . . . . . . divide by 2
__
You can do the above two steps both at once: multiply by 5/2x.
(2/5)(5/2x) = (4/x)(5/2x)
x = 20/2 = 10
To make 3 litres of pale purple paint you mix:
1.5 litres red
1.25 litres of blue
0.25 litres of white paint.
a How much red paint is needed to make 8 litres of paint?
Answer:
We need 4 litres of red paint.
Step-by-step explanation:
We need to take their respective precentages to compare the 3 litres of paint to 8 litres of paint.
[tex] \frac{1.5}{3} \times 100\% = 50\% \\ \frac{1.25}{3} \times 100\% = 41.67\% \\ \frac{0.25}{3} \times 100\% = 8.33\% \\ [/tex]
Now, we know that the pale purple paint contains 50% red paint, 41.67% blue paint, and 8.33% white paint.
Now, we will transfer these percentages to the 8 litres of paint:
[tex]50\% \: of \: 8 \: litres = 0.5(8) = 4 \: litres \\ 41.67\% \: of \: 8 \: litres = 0.4167(8) = 3.3336 \: litres \\ 8.33\% \: of \: 8 \: litres = 0.0833(8) = 0.6664 \: litres[/tex]
i need a math tutor for math i need help with my homework i’m so lost
Answer:
Ok which problem
Step-by-step explanation:
Answer:
I can try to help... what is the question?
What is the slope of the line that passes through the points (-3, 5) and (1, 15)
pls help asap 10 points
How many common tangent lines can you draw for to the two circles above?
0
1
2
3
Answer:
3 lines. Tangent line is defined as a line that passes through exactly 1 point in a circle. You can have a tangent line in the rightmost part, the point of intersection in the two circles, and the leftmost part.
Write an equation of the line that passes through the pair of points. (0, 1), (5, 3)
Answer:
Step-by-step explanation:
(3 - 1)/(5 - 0)= 2/5
y - 1 = 2/5(x - 0)
y - 1 = 2/5x - 0
y = 2/5x + 1
3.If angle 1 is 107 degrees, what is the degree measure of angle 2 If the two angles are supplementary?
Answer:
73 degrees
Step-by-step explanation:
supplementary means angles that add up to 180 degrees
heyy I just need u to reset the prob but with the answer also tell me the answer and thx
What is x-12 > 8 ?
Answer:
x>20
Step-by-step explanation:
Add 12 to both sides.
x−12+12>8+12
x>20
please help need help djhdhdhdj
Answer:
SAS
Step-by-step explanation:
whats all the fractions that are eqvalent to 4/3
Answer:8/6,12/9
Step-by-step explanation:
The fraction 8/6 is equal to 4/3 when reduced to lowest terms. To find equivalent fractions, just multiply the numerator and denominator of that reduced fraction (4/3) by any interger number, ie, multiply by 2, 3, 10, 30... 8/6 is equivalent to 4/3 because 4 x 2 = 8 and 3 x 2 = 6 12/9 is equivalent to 4/3 because 4 x 3 = 12 and 3 x 3 = 9
Answer:
4/3 = 8/6 = 12/9 = 16/12
= 20/15 = 24/18 = 28/21 = 32/24
= 36/27 = 40/30 = 44/33 = 48/36
= 52/39 = 56/42 = 60/45 = 64/48
= 68/51 = 72/54 = 76/57 = 80/60
= 84/63 = 88/66 = 92/69 = 96/72
= 100/75 = 104/78 = 108/81 = 112/84
= 116/87 = 120/90 = 124/93 = 128/96
= 132/99 = 136/102 = 140/105 = 144/108
= 148/111 = 152/114 = 156/117 = 160/120
= 164/123 = 168/126 = 172/129 = 176/132
= 180/135 = 184/138 = 188/141 = 192/144
= 196/147 = 200/150 = 204/153 = 208/156
= 212/159 = 216/162 = 220/165 = 224/168
= 228/171 = 232/174 = 236/177 = 240/180
= 244/183 = 248/186 = 252/189 = 256/192
= 260/195 = 264/198 = 268/201 = 272/204
= 276/207 = 280/210 = 284/213 = 288/216
= 292/219 = 296/222 = 300/225 = 304/228
= 308/231 = 312/234 = 316/237 = 320/240
= 324/243 = 328/246 = 332/249 = 336/252
= 340/255 = 344/258 = 348/261 = 352/264
= 356/267 = 360/270 = 364/273 = 368/276
= 372/279 = 376/282 = 380/285 = 384/288
= 388/291 = 392/294 = 396/297 = 400/300
Step-by-step explanation:
The regular polygon below is rotated about its center . Which angle of rotation will carry the figure onto itself ?
Answers is 3
360° = 72° 216o is a multiple of 72
The angle of rotation will carry the figure onto itself is 216 degrees
The measure of angle at the center of the polygon is 360 degrees. i.e.
[tex]\theta = 360^o[/tex]
The number of sides of the regular polygon is 5. i.e.
[tex]n = 5[/tex]
So, the smallest angle of rotation that maps the polygon onto itself is
[tex] = \frac{\theta}{n}[/tex]
This gives
[tex]\alpha = \frac{360}{5}[/tex]
[tex]\alpha = 72[/tex]
Other angles that map the shape onto itself, must be a multiple of 72. i.e.
[tex]\alpha = 72, 144, 216,288,360....[/tex]
Hence, the angle of rotation will carry the figure onto itself is 216 degrees
Read more about regular polygons at:
https://brainly.com/question/1592456
-5(-y+5)+ 5y=-5
Solved by substitution
Answer:
5y(5) +5y=-5
25y+5y=-5
30y=-5
Step-by-step explanation:
17x2 - 5x + 10x - 8x2
Answer:
9x2+5x
Step-by-step explanation:
combine like terms
Which points lie on the graph of the function fx) = (x + 2? Check all that apply.
0 (-55, 4)
0 (-3.8.-2)
0 (-11,1)
0 (-0.9,2)
(22,5)
O (476)
Answer:
o(476)
Step-by-step explanation:
when you see the calculations right you will see this is the correct anwser
Answer: C D E
Step-by-step explanation:
I’m taking the assignment right now
What is 1,9746 divided by 145.00928
Answer:
136.17059542672028
Step-by-step explanation:
just divide my friend
Simplify the expression:
(-1 + 3x)(4.9) =
Answer:
9
Step-by-step explanation:
what is 5/6 + 3/4 showing my work.
Answer:
1 and 7/12
Step-by-step explanation:
make the denominators the same and do what you do to the bottom to the top too
10/12+9/12=19/12=1 and 7/12
Answer:
find the LCD least common dom
so
5/6 ×2/2= 10/12
3/4 ×2/2 = 9/12
the combine is 19/12 so 1 7/12 :)
the value of a car is 30,000$ it loses 6.5% of its value each year. What will the value of the car be after 5 years
Answer:
6.5 x 5=32.5
67.5/100 x 30,000= $20,250
A warehouse has 5 shelves long enough to hold 7 boxes and high enough to hold 4 boxes. All the shelves are full. How many boxes are there?
Answer:
140 boxes
Step-by-step explanation:
7 groups of boxes can be stacked 4 times on each shelf.
7 *4= 28
28 boxes could fit on each shelf. There are 5 shelves.
28*5= 140 so 140 boxes in total.
Based on the scatterplot, which is the best prediction
of the number of gallons of water used by this
business when the cost of water is $180?
Answer:
90,000
Step-by-step explanation:
As per the given scatter plot, for the cost of $180, the number of gallons of water used is 90,000.
The association between two numerical variables measured for the same individuals is displayed in a scatterplot. One variable's values are displayed on the horizontal axis, and the other variable's values are displayed on the vertical axis.
Here,
According to the question, the maximum limit shown on the scatterplot is $180 for 90 units on the scatterplot,
Where horizontal units are represented as the scale of 1 unit = 1000 units.
So for the maximum.
For the cost of $180 the gallons of water used is 90×1000.
Thus, as per the given scatter plot, for the cost of $180, the number of gallons of water used is 90,000.
Learn more about scatter plots here:
https://brainly.com/question/13984412
#SPJ2
please helppp! I'll give brailiest
Answer:
range of given function is -5/3,-1,4/3
graph the equation y= -3x+4
Answer:
Here's what it would look like:
Please help me ASAP , thank you
Answer:
v=-4
Step-by-step explanation:
subtract 9 from both sides and simplify and divide both sides by 2
Which formula represents the nth term of arithmetic sequence 2, 5, 8, 11, ...?
Formula: An = A1 + (n - 1)d
Answer:
B
Step-by-step explanation:
[tex]a1 = 2 \\ a2 = 5 \\ d = a2 - a1 = 5 - 2 = 3[/tex]
[tex]an = 2 + (n - 1)3 \\ an = 2 + 3n - 3 \\ an = 3n - 1[/tex]
P divided by 4 in an algebraic expression
Answer:
P/4
Step-by-step explanation:
Arya deals in clothing and accessories. She bought 10 shirts at a wholesale price of 1120 each and sold them
all at a profit of 40 percent.
What was the price Arya charged for the 10 shirts?
Answer:
15680
Step-by-step explanation:
Cost of 1 shirt: 1120
Cost of 10 shirts: 11200
Add 40% to the cost of 10 shirts:
40% + 100% = 140% = 1.4
1.4 * $11200 = 15680
Answer: 15680
solve
k-3/4=2/5
asap
Answer:
k = 23/20
Please give brainliest!
Answer:
Step-by-step explanation:
Add 3/4 to both sides
k=2/5+3/4
Simplify
then your answer is 23/20
what are the relative max and min. of this graph?
Relative Max is 6
Relative Min is -8
PLZ HLP! A dog is leashed to the corner of a house. How much running area does the dog have? Round your answer to the nearest square foot, if necessary.
The area of a circle is area = pi x r^2
The full area = 3.14 x 20^2 = 1256 square feet.
The corner forms a 90 degree angle so the dirt area is 3/4 of a full circle.
Answer = 1256 x 3/4 = 942 square feet
Answer:
Step-by-step explanation:
942 SQUARE FEET
Abby sent a text message to three friends inviting each of them to a party each of those friends sent the message 3 more friends. Then each of these friends send a message to three more friends. If 2/3 of the friends receiving a text message attended the party how many friends attend the party
Answer:
26 friends not including abby
Step-by-step explanation:
i just drew it on a piece of paper and there were 39 people. then i just took 39 and multiplied it by 2/3 and got 26.