Answer:
4000
Step-by-step explanation:
5000 * .8 is 4000
Answer:
4000 students
Step-by-step explanation:
Number of computer science majors = 80% of 5000
= 0.8 * 5000
= 4000
Solve the system of linear equations in two variables by elimination or substitution.
2x + 4y = 4
2x - y=1
Answer:
x = 0.8 y = 0.6
Step-by-step explanation:
Solve one of the equations for a single variable, I chose the 2nd equation and solved for the variable y and I got y = 2x -1.
Next plug in the value for y into the 1st equation, I got :
2x + 4 ( 2x - 1) = 4
Next solve for x by first distributing the 4 to the (2x-1), this becomes (8x -4) then add like terms and move the -4 to the other side of the equation by addition. I got 10x =8 then I divided 8/10 to solve for x and I got 0.8.
Now plug the value 0.8 in for x in the 2nd equation : 2*(0.8) - y = 1
Then solve for y by subtracting 2*(0.8) or 1.6 from 1 and I got -0.6, lastly divide by -1 to solve for y.
Please help me find the answer
Answer:
[tex]k = \frac{2P}{x^2}[/tex]
Step-by-step explanation:
[tex]P= \frac{1}{2} kx^2\\\\P=\frac{kx^2}{2}\\\\ 2P =kx^2\\\\\frac{2P}{x^2}= \frac{kx^2}{x^2} \\\\k= \frac{2P}{x^2}[/tex]
Lee measured a restaurant and made a scale drawing. The scale he used was
2 millimeters : 1 meter. The restaurant's kitchen is 27 meters long in real life. How long is the kitchen in the drawing?
Answer:1 meter
Step-by-step explanation:
because in drawing it cant be as big as it is in real life
HELP ME PLEASE!!!! :))
is this a expression or inqualities 15x < x + 8
Answer:
Inequality
Step-by-step explanation:
An expression would not have a greater than or less than sign and this has one so it is an inequality
Answer:
inequalities
Step-by-step explanation: it deals with inequalities
Growth and decay question
Answer:
Decay
Step-by-step explanation:
Staring at 3000 every y = half of the previous one.
A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 160 lb and each box of books weighs 40 lb. The maximum capacity of the elevator is 670 lb. How many boxes of books can the delivery person bring up at one time?
Answer:
Step-by-step explanation:
So if the delivery person weights 160 lbs than we’re going to subtract 670-160=510 next we divide 40 into 510 which is 12.75. Which means that he can bring 12 boxes.
Answer:
12
Step-by-step explanation:
max cap 670lb- delivery person 160lb weight left 510lb
weight 510lb/each box 40lb number of boxes 12.75lb
each box 40lb times number of boxes 12lb 480lb+160lb 640lb
so your still have 30 lb before max weight of elevator
What is the gravitational potential energy (in Joules) of a 75 kg tourist at the top floor of the Sears Tower in Chicago that is 436 m high? Place the value in the space below without any commas or letters.
Answer:
Gravitational potential energy = 320,460 joules
Step-by-step explanation:
Given:
Mass of tourist = 75 kg
Height = 436 m
Gravitational accelration = 9.8 N/kg
Find:
Gravitational potential energy
Computation:
Gravitational potential energy = mgh
Gravitational potential energy = (75)(9.8)(436)
Gravitational potential energy = 320,460 joules
Answer:
Step-by-step explanation:
What is the solution to the equation 3x – 8 = -2?
O A. -3 1/3
O B. 3 1/3
C. 2
D. -2
Answer:
option (c) 2
Step-by-step explanation:
We have the linear equation :-
→ 3x - 8 = -2
add 8 both sides
→ 3x - 8 + 8 = -2 + 8
→ 3x = 6
→ x = 6 ÷ 3
→ x = 2
Write the equation of a line with a slope of 4 and a y-intercept of −3.
Answer: y=4x-2
Step-by-step explanation:
Slope-intercept form: y=ax+b, where a is the slope and b is the y-intercept.
Given: slope is 4, and y-intercept is -3
y=ax+b
y=4x+(-3)
y=4x-3
Hope this helps!! :)
Please let me know if you have any question
Simplify.
40w4
8w6
Only simplify don’t actually solve and if u give me the right answer first I’ll give u the crown
you are installing a support wire for an electrical pole. the pole is 25 feet and the ground connection is 10 feet from the base of the pole. the wire is sold per whole feet. how many feet of support why should you purchase
ans=26.92
use trigonometric ratios
a²= b²+c²
a²=25²+10²
a²=625+100
now take square root on both sides
a
[tex] \sqrt{a { }^{2} } = \sqrt{725} [/tex]
a=26.92
a=27 (2decimal place)
Help ASAP thank youu
25°C
Step-by-step explanation:C = 5/9(F - 32)
= 5(77 - 32)/9
= 5×45/9
= 5×5
= 25° C
Answer: The answer is 25°C.
I hope this helped and please please mark me as brainlest.
The first five batters on a softball team’s lineup have the following numbers of hits for the season: 83, 71, 68, 62, 61. What is the mean number of hits for these five players?
Answer:
296.2
Step-by-step explanation:
Answer:
69
Step-by-step explanation:
83+71+68+62+61(players hits for the season)=345
345(total of numbers added)÷5(number of players)
69(average of players hits as a team)
Use the figure to find the Volume. 30 cu. units 60 cu. units 104 cu. units
Answer:
60 cu units
Step-by-step explanation:
volume is base times height times length
5 x 6 x 2
* Required
Solve.
15) 4x + 2 y = 14
2x + y = 8
Answer:
Step-by-step explanation:
4x + 2y = 14
-4x - 2y = -16
0 ≠ -2
no solutions
the Rope is 30m long. how many 3/4 meter pieces can be cut from the rope
Answer:
40
Step-by-step explanation:
Given:
Length = 30 mPieces = 3/4 mNumber of pieces:
30 ÷ 3/4 = 30 × 4/3 = 40 piecesThe are of a rectangle is 50m^2 , the length is 100m . Calculate the width
w = 0.5 m
Step-by-step explanation:A = l × w
50m² = 100m × w
w = 50m²/100m
w = 0.5 m
Answer:
The answer is 0.5 m i.e Width = 0.5 m
Step-by-step explanation:
Given,
Area (A) = [tex]50m^{2}[/tex]
length (l) =100 m
width ( b ) = ?
Now,
A = l * b
or, 50 = 100 * b
or, [tex]\frac{50}{100}[/tex]= b
or, b = 0.5 m
Factor the common factor out of the expression.
4a^4 – 20a^2
Answer:
4a²(a² - 5)
Step-by-step explanation:
4a⁴ – 20a² =
4a²× a² - 4a²×5 = ⇒ common factor is 4a²
4a²(a² - 5) ⇒ factorized
need help finding the side length, thank you! please try and show work or you can
Answer: x=16
Step-by-step explanation:
For this problem, we can set a proportion to find the side length of the smaller rectangle.
[tex]\frac{15}{24}=\frac{10}{x}[/tex] [cross multiply]
[tex]15x=240[/tex] [divide both sides by 15]
x=16
0.29 rounded? I need this for msth and quick!!
Answer:
0.29 rounded to the nearest ones is 0.
0.29 rounded to the nearest tenths is 0.3
0.29 rounded to the nearest hundredths is 0.29
Step-by-step explanation:
Note that when rounding, you always look at the place value directly next to the one you are rounding. Note that if the digit is 5 or greater, round up; If 4 or less, round down.
Round to the nearest ones:
Look at the place value directly next to the ones (tenths place value). It is a 2. Because 2 is less than 5, round down:
0.29 rounded to the nearest ones is 0.
Round to the nearest tenths:
Look at the place value directly next to the tenths (hundredth place value). It is a 9. Because 9 is greater than 5, round up:
0.29 rounded to the nearest tenths is 0.3
Round to the nearest hundredths:
Look at the place value directly next to the hundredths (thousandths place value). Because there is no number, it is typically signified by a 0 (place holder).
0.29 rounded to the nearest hundredths is 0.29
~
2a – 6 (a – 4) = -4
Can I solve this?
Answer:
-4
Step-by-step explanation:
Answer:
A=7
Step-by-step explanation:
2a-6a+24=-4
simplify
-4a+24=-4
subtract 24 from both sides
-4a=-28
divide both sides by -4
a = 28/4
simplify 28/4 to 7
a=7
1/4 Divided By 9/10=
Answer:
[tex]\frac{5}{18}[/tex]
Step-by-step explanation:
When dividing fractions, the formula is simple: Keep Flip Change (KFC)
So keep [tex]\frac{1}{4}[/tex] change your division sign to a multiplication sign, and flip [tex]\frac{9}{10}[/tex] so it becomes [tex]\frac{10}{9}[/tex].
[tex]\frac{1}{4}[/tex]·[tex]\frac{10}{9}[/tex]=[tex]\frac{10}{36}[/tex]
Then you need to reduce your fraction to simplest form.
[tex]\frac{5}{18}[/tex]
Help anyone I need this for my test tomorrow please I am being anyone who knows how to do algebraic expression
Answer:
19. x > 7
20. x < 35
21.[tex]5\times x =5x[/tex]
22. [tex]\frac{1}{3} \times x = \frac{1}{3} x[/tex]
23.[tex]f\div 10[/tex] or [tex]\frac{f}{10}[/tex]
24. 45r
25.[tex]3\times x +16=3x+16[/tex]
26.[tex]18-3\times d = 18-3d[/tex]
27.[tex]k^2 -11[/tex]
28.[tex]\frac{20}{t^5} \\[/tex]
Step-by-step explanation:
what is the degree of -7xyz^2
Answer:
The degree is 4
Let me know if it helped :)
Is y=4x+13 a function
Answer:
Yes
Step-by-step explanation:
a+3ab+67a-2ab-1 and for 5 stars
Answer:
68a+ab−1
Step-by-step explanation:
cancel out
Answer:
Step-by-step explanation:a+67a=68a
3ab+2ab=5ab
so 69a+5ab-1
Find the equation of the line below.
Answer:
y = 2x
Step-by-step explanation:
The equation of a line is y = mx + b
We can plug in values for x and y,:
x = 1, y = 2
2 = m + b <- equation 1
x = 4 y = 8
8 = 4m + b <- equation 2
We can multiply equation 1 by 4, getting 8 = 4m + 4b.
We can them subtract equation 1 by equation 2, getting 3b = 0.
Therefore, b = 0.
We can use the equation 2 = m + b and find m:
Since b = 0, m = 2.
The equation is then y = 2x.
As a decimal number
8×1+1× 1/ 10 +6× 1 /100 +7× 1/ 1000 =
Answer:
the answer is 8.167
Step-by-step explanation:
What is the constant in the expression 6a+2b+5?
Answer:
The answer would be 5.
Step-by-step explanation:
Tthe other terms have a number being multiplied by a variable.