Answer:
Carpentry = 12 hours Blacksmithing = 18 hoursStep-by-step explanation:
Question wants to know the number of hours se worked at each.
This is a simultaneous equation problem.
Assume the carpenter job is x and the blacksmith is y.
x + y = 30
20x + 25y = 690
Substitution:
x + y = 30
y = 30 - x
20x + 25y = 690
20x + 25(30 - x) = 690
20x + 750 - 25x = 690
-5x = 690 - 750
-5x = -60
x = -60/-5
= 12 hours for carpentry
y = 30 - x
= 30 - 12
= 18 hours for blacksmithing
Solve for x
0.5x = 20
1. x = 40
2. x = 10
3. x = 2.5
Answer:
It's the first answer. 40
Step-by-step explanation:
divide both sides by 0.5
Answer:
1. x=40
Step-by-step explanation:
x=20÷0.5
x=40
I NEED HELP PLEASE THANK YOU
Answer:
d
Step-by-step explanation:
if you tried to do the d you would end up with this
/_)
Find the slope of the line.
The slope of the line is
(I have 10 min left pls help asap)
Answer:
8/4 = 2
Step-by-step explanation:
Plz help don’t understand
Answer:
Step-by-step explanation:
every time x goes up 1, y goes up 4
x = 3 minus x = 2 is a delta (a change of 1)
x = 4 minus x = 3 is a delta (a change of 1)
x = 5 minus x = 4 is a delta (a change of 1)
the delta x is ALWAYS 1 for this table you can always substract x's to find the delta delta is symbolized by Δ Δx for the delta x
y = 7 minus y = 3 is a delta (a change of 4)
y = 11 minus y = 7 is a delta (a change of 4)
y = 15 minus y = 11 is a delta (a change of 4)
the delta y is ALWAYS 4 for this table you can always substract y's to find the delta delta is symbolized by Δ Δy for the delta y
the slope m = Δy / Δx m = 4 / 1 m = 4
y = mx + b when x = 0 then y = b (called the y intercept)
so how do we find the y intercept?
look at the pattern in the TABLE Δx and Δy
when x = 1 y = (3 - 4) = -1
x = 0 y =( -1 - 4) = -5
so y = 4x - 5 is a line equation for the data in this table
I believe there are other forms for linear equations
I chose the y-intercept form
use the point slope equation
(y - y1) = m(x - x1) where (x1, y1) are the coordinates of a point on
the line
when you know the slope of the line and a point on the line
as before
m = (y2 - y1) / (x2 - x1) from the table
= (7 - 3) / (3 - 2) still equals
= 4/1 = 4
pick a point on the line say x= 4 and y = 11 (4, 11)
(y - y1) = m(x - x1)
y - 11 = 4(x - 4) point slope form
solving point slope form for y
y - 11 = 4x - 16 add 11 to both sides
y = 4x - 5 back to the y-intercept form
Forty-five percent of the 5,000 fast food customers ordered a hamburger. How many of the customers did not order a hamburger?
Answer:
2750 people didn't order a hamburger
Step-by-step explanation:
100%-45%=55%
55% of 5000=2750
Answer:
We want to find 55% of 5000, which is 2750
Hope this helps and brainliest please
please help me!!!!!!!
Answer:
Option 1.
f(x)= 5^x
Step-by-step explanation:
1) I identified the equation as an exponential equation
2) I plugged the equations into a graphing calculator, and then did 2nd+GRAPH. The only equation with 5 in the Y column was 1.
6 - 2x > -18 what is x equal to
Answer:
x < 12
Step-by-step explanation:
Emily is entering a bicycle race for charity. Her mother pledges $0.40 for every 0.25 mile she bikes. If Emily
bikes 5 miles, how much will her mother donate?
Solve for x if 2(x - 2) = 26
A) x=25
B) x=8
C) x=15
D) c=30
Answer:
The answer is C x=15
Step-by-step explanation:
Simplify both sides of the equation.
2(x−2)=26
(2)(x)+(2)(−2)=26(Distribute)
2x+−4=26
2x−4=26
Add 4 to both sides.
2x−4+4=26+4
2x=30
Divide both sides by 2.
2x /2 = 30/ 2
x=15
Answer:
x= 15
Tanya has 2 red marbles, 5 blue marbles, and 9 green marbles. Which expression can be used to find the percent of Tanya's marbles that are blue?
Answer:
no habló español
Step-by-step explanation:
no habló español
Answer:
2+5+9=16
5= what percent of 16
3.2 is 5% of 16 so 32 percent of her marbles are blue
jk that is definitely not right but i need points
Step-by-step explanation:
Which point (x,y) is a solution to the system of linear equations?
pls i need help it is for a test :)
What is negative 8.64 divided by negative 0.024
Answer:
360.
Positive answer, as negatives divided by negatives are positives.
Answer:
negative 8.64 divided by negative 0.024 = 360
Step-by-step explanation:
a positive ÷ by a negative = a negative
a negative ÷ by a positive = a negative
a positive ÷ by a positive = a positive
a negative ÷ negative = a positive
---
hope this helps :)
hello someone help please
Answer:
b. the y-intercept is 2
Step-by-step explanation:
i hope this helps :)
Answer:
I think it's b
Step-by-step explanation:
I remember doing this before
what's
[tex] {x}^{2} - {y}^{2} [/tex]
( where, x = 12 and y = 11 )
Answer:
here's your solution
=> we need to solve this ( x^2 -y^2)
=> it is given that x = 12 y= 11
=> now putting the value of these in question
=>. 12^2 - 11^2
=> 144 - 121
=. 23
how do i k1ll myseIf without feeIing pain in my body
Answer:
don´t
Step-by-step explanation:
in most cases of su1cide it has been proven that most who attempt (usually by hanging) regret doing that as they struggle to survive. you may not see value in your life currently, but there is always hope in the future. find someone you trust and talk to them. it never hurts to do that and could really help you :)
Help anyone please help homie anyone god lord
Answer:
g(x)=2x-3÷5
g=-11 as give by question
x=9 as give by question
-11×9=2×9-3÷5
-99=18-3÷5
-99=15÷5
-99=3
=3+99
=102#
Select all of the following that can be a counterexample for the statement below.
If x is an integer, then x + 2 > 7.
I can't see pictures, but I'm assuming you want it solved.
x+2>7.
Cancel out the 2 by subtracting 2 from both sides.
x+2>7
-2 -2
x>5
So the inequality is x>5.
---
hope it helps
sorry if it doesn't
HELP BRAINLIEST............
Answer:
MC= 11cm
BCM= 49.68°
Step-by-step explanation:
MC= 1/2 AC
1/2 AC = 11
MC= 11
∠α = arcsin(a/c)
= arcsin( 12.961481396816/17)
=arcsin(0.76244008216563)
=0.86708 rad
= 49.68°
Please i need this soon
Answer:
k = -4
Step-by-step explanation:
Step 1: Subtract 1 from both sides
Step 2: Multiply both sides by 2
Step 3; Divide both sides by 5
[tex]\frac{5}{2}k+1=-9\\\\\frac{5}{2}k =-9-1\\\\\frac{5}{2}k = - 10\\\\5k = -10*2\\\\5k = -20\\\\k =\frac{-20}{5}\\\\k = -4[/tex]
Answer:
k= -4
Step-by-step explanation:
Solve for k by simplifying both sides of the equation, then isolating the variable.
Hope it helps!
Two towns tracked the attendance at their summer fairs in 2016 and 2017. The data for each town and year is shown below. Year Ogdenville North Haverbrook 2016 960 500 2017 1008 540 What was the difference between the percent increases for each town from 2016 to 2017?
Answer:
48 and 5%; 40 and 8%
Step-by-step explanation:
The computation of the difference between the percentage increase for each town from 2016 to 2017 is given below:
Year Ogdenville North Haverbrook
2016 960 500
2017 1008 540
So here the difference would be
For 2016 to 2017
= 1008 - 960
= 48
The percentage increase is
= 48 ÷ 960
= 5%
And,
= 540 - 500
= 40
And, the percentage increase is
= 40 ÷ 500
= 8%
can someone help me pls
Answer:
The larger circle has an approximate area of 314 cm²
Step-by-step explanation:
As you can see by the diagram, the white circle is twice as wide as the grey circles. That means that its radius is also twice theirs.
The grey circles have a radius of 5cm, so the larger has a radius of 10cm.
The radius of a circle is equal to πr², where r is the radius of the circle. So the larger circle's radius is:
π × 10²
≈ 3.14 × 100
= 314.
So the larger circle has an approximate area of 314 cm²
Solve for c, giving brainliest. please show your work/explain, i got to the point of square rooting 185, but i don't understand where to go from there if it cannot be simplified. Thanks.
Answer:
13.6 in
Step-by-step explanation:
Please refer to the attachment
The following triangles are congruent by____
AAS
SAS
ASA
Can't determine
Answer:
hmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm ihnc
Step-by-step explanation:
Rewrite 0.361 as a fraction in lowest terms.
Answer:
361/1000
Step-by-step explanation:
this should be the answer
d=125 + 80n models the amount of money (d) in the register after selling n tickets. How much money does she have in the register before selling any tickets?
Answer:
She has $125 in the register before selling any tickets.
Step-by-step explanation:
If the cost of each ticket is $80 then the equation would just be d=80n. However, by adding 125 without any coefficient, this would make our starting point 125 and not 0. Our starting point is how much money is in the register prior to selling anything.
PLEASE HELP ASAP 30 POINTS!! Show all work!
6) Marcus goes to a bank and opens a new account. He deposits $6,500 that earns 1.4% compounded annually. How much would he have at the end of 3 years? Round to the nearest hundredth.
A) $6,591.00
B) $6,683.27
C) $6,773.00
D) $6,776.84
Answer:
D, 6500 increased by 1.4% is 6591 plus another 1.4% which is 6683 and for the last year you add another 1.4% to get the final answer which is D 6,776.84
Answer:
P- 6500
R-1.4%
T- 3yrs
I-?
I first find simple interest,
I=P×R×T÷100
=273
then you add your answer to the price(6500)
273+6500=6773
I need help with 1) part A (only comment if ur gonna help please I don’t understand this)
Help plssss lolllllll
Answer:
8
Step-by-step explanation:
you want to set it up like this
8/20 and 6/2x-1
then you cross multiply
so 8(2x-1) = 16x-8
and 20*6 = 120
then you do 120= 16x-8
add 8 to both sides (you want x by it's self so to get rid of a -8 you have to add 8)
128= 16x
(divide both sides by 16)
128/16= 8
8=x
Answer:
what they said↑↑↑
Step-by-step explanation:
choose the inequality that represents the following graph (ANSWER ASAPP PLEASE)
Answer:
B?
Step-by-step explanation:
SOLVE QUICK PLEASE!! 20 POINTS
Answer:
SA = 384 in²
Step-by-step explanation:
Assuming we're finding surface area:
SA of top of large cube: 8(8) - 4(4) = 48 in²
SA of sides of large cube: 4(8)(8) = 256 in²
SA of exposed faces of small cube: 5(4)(4) = 80 in²
Total = 48 + 256 + 80 = 384 = ∑SA