Answer:
2
Step-by-step explanation:
3−2(x+1)=2x−7
3+(−2)(x)+(−2)(1)=2x+−7(Distribute)
3+−2x+−2=2x+−7
(−2x)+(3+−2)=2x−7(Combine Like Terms)
−2x+1=2x−7
−2x+1=2x−7
Step 2: Subtract 2x from both sides.
−2x+1−2x=2x−7−2x
−4x+1=−7
Step 3: Subtract 1 from both sides.
−4x+1−1=−7−1
−4x=−8
Step 4: Divide both sides by -4.
−4x−4=−8−4
x=2
What’s -4•3-6•5
And the dot is multiplication!
Answer:
-42
Step-by-step explanation:
I put it in a calculator
Answer:
-42
Step-by-step explanation:
the answer should use PEMDAS so it is -42
Help please timed homework. 50 points
Answer:
I mean that's quite an interesting question
URGENT
What is the distance between the two points (-5, 6) and (8,-4)?
Given parameters:
Coordinates of the two points = (-5, 6) and (8,-4)
Unknown:
Distance between the two points.
To find the distance between two points, use the expression below;
Distance ² = (x₂ - x₁)² + (y₂ - y₁)²
where;
(-5, 6) and (8,-4)
x₂ = 8 , x₁ = -5 , y₂ = -4 and y₁ = 6
Input the parameters and solve;
Distance² = (8-(-5))² + (-4 - (6))²
= 169 + 100
= 269
Distance = [tex]\sqrt269}[/tex] = 16.4
The distance between the two points is 16.4
what's the answer to 2x^2 x= 10
Answer:
1
Step-by-step explanation:
In the month of June, the temperature in Johannesburg, South Africa, varies over the day in a periodic way that can be modeled approximately by a trigonometric function. The lowest temperature is usually around 3^\circ C3 ∘ C3, degrees, C, and the highest temperature is around 18^\circ C18 ∘ C18, degrees, C. The temperature is typically halfway between the daily high and daily low at both 10\text{ a.M.}10 a.M.10, start text, space, a, point, m, point, end text and 10\text{ p.M.}10 p.M.10, start text, space, p, point, m, point, end text, and the highest temperatures are in the afternoon.
Answer:
The answer is "[tex]\bold{T = - 7.5 \cos \frac{\pi}{12}( t - 4 )+ 10.5}[/tex]"
Step-by-step explanation:
Given value:
Temp-maximum=[tex]18^{\circ}[/tex]
Temp. minimum = [tex]3^{\circ}[/tex]
It is halfway between 10 am and 10 pm to 4 am.
The sinus and cosine roles could be used throughout the year to predict fluctuations in climate models. Its type of formula that can be used to model such information is:
[tex]T = A \cos B(t-C) + D,[/tex] where parameters are A, B , C, D, T is the ° C temperature and t is the time (1-24)
[tex]A = amplitude = \frac{(T_{max} - T_{min})}{2}\\\\[/tex]
[tex]= \frac{(3 - 18)}{2}\\\\= - \frac{15}{2}\\\\ = -7.5[/tex]
[tex]B = \frac{2 \pi}{24}\\\\[/tex]
[tex]= \frac{\pi}{12}[/tex]
[tex]C = \text{ units translated to the right}= 4[/tex]
[tex]D = y_{min} + amplitude = units \ translated \ up\\\\[/tex]
D = 7.5 + 3 = 10.5
Its trigonometric function equation that model temperature T hours after midnight in Johannesburg t.
[tex]T = - 7.5 \cos \frac{\pi}{12}( t - 4 )+ 10.5[/tex]
Answer:
Hope this helps.
Step-by-step explanation:
In a student survey, forty part-time students were asked how many courses they were taking this term. The (incomplete) results are shown below: Please round your answers to 4 decimal places.
# of Courses Frequency Relative Frequency Cumulative Frequency
1 11 ? 11
2 ? 0.425 28
3 12 0.3 ?
What percent of students take exactly two courses?
%
Answer:
42.5%
Step-by-step explanation:
First we have to complete the table. We know that there are forty part time students so sum(f)=n=40. So, for two courses frequency is 40-11-12=17.
The relative frequency is the proportion of respective frequency and the sum of frequency. So, the missing relative frequency for 1st course is 11/40=0.275.
The missing relative frequency can also be computed as by subtracting given relative frequencies from 1 as sum of relative frequencies is 1. So, 1-0.425-0.3=0.275.
The cumulative frequency of respective class is the sum of frequency of previous classes and frequency of respective class. The missing cumulative frequency is 11+17+12 or 28+12= 40.
So, the complete table is
# of Courses Frequency Relative Frequency Cumulative Frequency
1 11 0.275 11
2 17 0.425 28
3 12 0.3 40
The percent of students takes exactly two courses=0.425*100=42.5%
43/21 as a decimal rounded to the nearest hundreth
Answer:
2.05
Step-by-step explanation:
Answer:
2.05
Step-by-step explanation:
43/21 = 2.047 ≈ 2.05
The 4 is in the hundredths place, so you would look at the right of the 4 to determine what to round it to.
If it is 0-4 keep it the same
If it is 5-9 up it by one.
Example,
5.903 = 5.90
6.389= 6.39
Factor the expression completely. -21x^3+3x
Answer:
The answer is -3x(7x^2 - 1)
Two species of birds are being compared. Species A can fly 18.9 miles in 42 minutes, while species B can fly 20.3 miles in 58 minutes. Which species is slower, and at what speed can it fly?
Answer:
all i know is species A is faster, but i dont really feel like seeing witch one goes how much slower or faster
Step-by-step explanation:
ok so if you use the unit speed, you should get a higher one for species A.
I got a few 1000 more lol :')
Answer:
92
Step-by-step explanation:
Start with the first sentence. 7 crates of 12 eggs each and you need to find out how many eggs that is; that's just 12 + 12 + 12 + 12 + 12 + 12 + 12, or 12 * 7, which equals 84.
Real question is: how many do they have now? Well, if they had 8 eggs at first and they just bought 84 more, then the answer is just 8 plus the 84 that they just bought, which is 92.
Please mark as Brainliest! :)
Answer:
Your correct answer is that they now have 76 eggs left.
Step-by-step :
So, to start off, they had 7 boxes with each box with 12 eggs. So multiply 7 by 12.
7 x 12 = 84
Now, they ate 8 eggs.
84 - 8 = 76 eggs
Jenny is picking apples to make apple pie. The amount of
apples that she needs to pick varies directly with the
number of pies she plans to bake. If Jenny needs to make 12
apple pies, she will need to pick 42 apples. How many apples
would she need to pick if she was only making 8 pies?
A number problem states, “–5 times a number, minus 22 gives a result of 23.” What is the number?
Answer:
im pretty sure its -9
Step-by-step explanation:
the equation explained would look something like this...
-5x-22=23
so you would isolate the variable by first adding 22 to both sides and the dividing by -5 on both sides
-5x-22=23
+22 +22
-5x/-5=45/-5
x=-9
the cost (in dollars)of making u cell phones is represented by C=20u+61. How many cell phones are made when the cost is $481
Answer:
U=21
Step-by-step explanation:
What they are asking for is U. They tell you that the cost is 481 so the C is 481
481=20u+61
You minus 61 from 481 which is 420.
420=20u
Then you divide 20 from 420 and you will get 21.
The soccer field at a park is 9,000 square yards. The soccer field takes up 6 2/5 square inches on the map of the park. How many square yards does 1 square inch on the map represent? Show your work. Help me pls
Answer: 1406.25
Step-by-step explanation:
The soccer field at a park is 9,000 square yards. The soccer field takes up 6 2/5 square inches on the map of the park. How many square yards does 1 square inch on the map represent? Show your work. Help me pls
Given that:
Area of soccer field = 9000 sq yards
Soccer field takes up 6 2/5 square inches on the map of park
Hence,
9000 yd² = 6 2/5 in²
Let 1 in² on map = m
9000 yd² = 32/5 in² - - - (1)
m = 1 in² - - - (2)
Cross multiply ;
6.4 * m = 9000
m = 9000/6.4
m = 1406.25
Hence,
1 in² on map = 1406.25 feet²
900
-20t – 12 < -17t -9<-20t + 6
Answer:
12
Step-by-step explanation:
Please Help Me ASAP!!!
Everything you need is in the picture attached.
i need help with this please help asap
Step-by-step explanation:
4^5 (-2)^9/4^8 (-2)^3
= 4^(5 - 8) (-2^(9 - 3))
= 4^-3 (-2^6)
= (-2)^6/4^3
1). (-2)^a/4^b
a = 6, b = 3
2). c/d
c = -2, d = 4
Please answer this, i really need it its my last question
Answer:
y=-4 to 4
x=-1 to -7
Step-by-step explanation:
Evaluate 2x2 + 4 if x = 2
Answer:
x = 12
Step-by-step explanation:
insert 2 into the equation where x is.
2(2)2 + 4
so this is 2 * 2 * 2 + 4 = 12
Find the equation of the line in slope-intercept form. c Slope is 3/5 and (0, −2)
Answer:
y=3/5x-2
Step-by-step explanation:
The slope is already given, 3/5 so just plug it in to the base formula y=mx+b
And the coordinate (0,-2) is your y-intercept. So plug in -2 to b
Therefore y=3/5x-2
Jay walks 3 blocks north and then 4 blocks east from his home if he walks straight back home how far does Jay walk-in all?
Answer:
he walked 7 block's
Jay walks 3 blocks north and then 4 blocks east from his home if he walks straight back home, 5 blocks does Jay walk-in all
What is Trigonometry?Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.
Given,
Jay walks 3 blocks north and then 4 blocks east from his home if he walks straight back home.
We have to use pythagorean theorem in finding distance
As given in the attachment, Let AB= 3
BC=4
AC=x
To find AC we use pythagorean theorem
AC²=AB²+BC²
AC²=3²+4²
AC²=9+16
AC²=25
Take square root on both sides.
AC=5
Hence 5 blocks he walks straight back home how far does Jay walk-in all
To learn more on trigonometry click:
https://brainly.com/question/25122835
#SPJ2
the digit 5 in 357 represents 1 tenth as much as the digit 5 in 465
Answer:
True
Step-by-step explanation:
You must use the decimal places and place values
Given the function f(x)=3x-1, what is f(3) ? Group of answer choices:
32
9
8
5
Answer:
8
Step-by-step explanation:
just substitute it in the equation and you will find the answer
Answer:
8
Step-by-step explanation:
Step 1:
f ( x ) = 3x - 1 Function
Step 2:
f ( x ) = 3 ( 3 ) - 1 Input x
Step 3:
f ( x ) = 9 - 1 Multiply
Answer:
f ( x ) = 8
Hope This Helps :)
Erin has $14 dollars to buy 7 lunches for the week. Write and solve an inequality that
represents the prices she can pay per lunch.
Answer:
7x [tex]\leq[/tex] $14 ; x[tex]\leq[/tex] 2
Step-by-step explanation:
Where x represents the number of lunches
During a musical an orchestra is playing. As the music plays, the volume changes in the beginning of the piece can be modeled by the equation s = 10│x - 4│+ 50 where s represents the sound level in decibels and x represents the number of measures of music played. Explain in words each step to find the following question:
At what number(s) measures played would the sound level be at 80 decibles?
( I need the answers, plus the steps please and thank youuu :)
Answer:
Kindly check explanation
Step-by-step explanation:
Given the equation:
s = 10│x - 4│+ 50
Where s = sound level in decibels
x = number of measures of music played
Step 1:
Subtract 50 from Both sides
s - 50 = 10│x - 4│+ 50 - 50
s - 50 = 10│x - 4│
For s = 80
80 - 50 = 10│x - 4│
30 = 10│x - 4│
Clear the absolute value sign
± 30 = 10x - 40
Hence ;
Lower value :
- 30 + 40 = 10x
10 = 10x
x = 1
Upper value :
+30 + 40 = 10x
70 = 10x
x = 7
Claire prides herself on being a smart investor. Recently she invested some money and doubled the amount.
Feeling good about herself, she spent $4000 on a trip around the world. At the same time she reinvested
what was left. After returning from her trip, she found out that the amount invested had tripled. She
threw a party that cost $5000 and put the remaining $10000 in the bank. How much money did she have at
the start?
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The product of two consecutive integers is 19 less than their sum.
What equation represents the statement above?
Answer:
is there any choices?
Step-by-step explanation:
What type of angle is this??
Please help! I’ll give brainliest!!
Answer:
Same-side interior angle
Step-by-step explanation:
add up to 180 degree
Answer:
Acute angle
Correct me if wrong but that's what I know
POSSIBLE POINTS: 3
You go to the football game, and admission is $5 and it costs $1 per snack.
The slope is
The y-intercept is
If you have $12, you can go to the game and buy snacks
1
2
3
Next
c)
Answer:
4 snack
Step-by-step explanation:
12 - 5 = 4
Please help. I dont know how to do this
Answer:
y=3x+3
Step-by-step explanation:
3 is the slope, up 3 and right 1
3 is the y intercept
