5 - 2 (4а + 1) - За - 13 I need help
Answer:
-11a - 10
Step-by-step explanation:
simplify in order of terms: -2(4a + 1) - 3a - 13 + 5
simplify: -8a - 2 - 3a - 8
simplify again: -11a - 10
Help I have 10 minutes left
55
15x + 5
8
09
0.7
O 3,3
how to write the radical √8 using rational exponents?
Answer:
2√2
Step-by-step explanation:
√8 can be simplified to √(4)(2) , since 4 x 2 still equals 8. But now, 4 is a perfect sqaure, and whenever we get a perfect sqaure, we divided it by its root and put that number on the outside.
For ex: √32 = √(16)(2), since 16 x 2 = 32. 16 is a perfect sqaure, so we take its root and put it on the outside 4√2 ,
Now with this one, we'll do the same thing: √(4)(2) = 2√2
Answer:
2^2
Step-by-step explanation:
Calculate the length of the unknown side of each triangle.
a)
3 cm
5 cm
Give your answers to the nearest mm.
Answer:
5.8cm or 58mm
Step-by-step explanation:
A sample of a radioactive isotope had an initial mass of 360 mg in the year 1998 and
decays exponentially over time. A measurement in the year 2004 found that the
sample's mass had decayed to 270 mg. What would be the expected mass of the
sample in the year 2011, to the nearest whole number?
Answer:
193 mg
Step-by-step explanation:
Exponential decay formula:
[tex]A_t = A_0e^r^t[/tex]where Aₜ = mass at time t, A₀ = mass at time 0, r = decay constant (rate), t = timeOur known variables are:
1998 to the year 2004 is a total of t = 6 years.The sample of radioactive isotope has an initial mass of A₀ = 360 mg at time 0 and a mass of Aₜ = 270 mg at time t.Let's solve for the decay constant of this sample.
[tex]270=360e^-^r^(^6^)[/tex][tex]270=360e^-^6^r[/tex] [tex]\frac{3}{4} =e^-^6^r[/tex][tex]\text{ln} (\frac{3}{4} )= \text{ln}(e^-^6^r)[/tex] [tex]\text{ln} (\frac{3}{4} )=-6r[/tex] [tex]r=-\frac{\text{ln}\frac{3}{4} }{6}[/tex] [tex]r=0.04794701[/tex]Using our new variables, we can now solve for Aₜ at t = 7 years, since we go from 2004 to 2011.
Our new initial mass is A₀ = 270 mg. We solved for the decay constant, r = 0.04794701.
[tex]A_t=270e^-^(^0^.^0^4^7^9^4^8^0^1^)^(^7^)[/tex] [tex]A_t=270e^-^0^.^3^3^5^6^2^9^0^7[/tex][tex]A_t=193.01982213[/tex]The expected mass of the sample in the year 2011 would be 193 mg.
Do this for a cookie plz ;)
Answer:
i just want the cookie so can i have it ? ._.
Step-by-step explanation:
There are 16 cars for every 9 trucks in a parking lot. If there are 72 trucks in total in the parking lot. How many cars are there?
Can anyone help me please?
Answer: 17
Step-by-step explanation:
We can tell that for every 2 changes in X there is 8 points lost in y
meaning that if we do 8 /2 we get 4
Every 1 change in x there is 4 points of change in Y
so if (3,5) Then (0,17)
17 - 5 = 12 And 3-0 = 3 So for 3 points of change for Xthere were 12 points of change for Y so this is right
3/5 as a decimal and rounded to the nearest thousandth
Answer:
0.6
Step-by-step explanation:
In the figure below, MN | KL and are intersected by transversals ML and KN M 1551 What is the measure of , XMN?
130°
85°
55°
50°
Answer:
∠ XMN = 50°
Step-by-step explanation:
∠ XNM and ∠ XKL are alternate angles and are congruent, then
∠ XNM = 35°
The sum of the 3 angles in a triangle = 180° , so
∠ XMN = 180° - (95 + 35)° = 180° - 130° = 50°
Geometry Angle of elevation/depression
Answer:
m∠ACB = 49.88°
Step-by-step explanation:
From the figure attached,
Measure of wire AC attached to the top 'C' of the building BC = 340 m
Horizontal distance between the base 'B' of the building and point A = 260 m
Angle of depression = ∠ACB
By applying sine rule in the given triangle,
sin(∠ACB) = [tex]\frac{\text{Opposite side}}{\text{Hypotenuse}}[/tex]
= [tex]\frac{AB}{BC}[/tex]
= [tex]\frac{260}{340}[/tex]
m∠ACB = [tex]\text{sin}^{-1}(764706)[/tex]
= 49.88°
please help i don't understand what this means ahh
Answer:
WHAT WENDOSDD
Step-by-step explanation:
Answer:
9 units
Step-by-step explanation:
203/4108 as a percent
a. 4.94%
b. 20.24%
c. 0.049%
d. 49.42%
32+4 X (16 X 1/2) -2
Answer: look at the picture
Step-by-step explanation: Hope this help :D
Please helppp answer correctly I’ll mark u brainliest
Answer:
≈ 15 ft
Step-by-step explanation:
There is a right triangle formed by the ground, the building and the ladder.
The ground and the height the ladder is up the wall are the legs and the ladder is the hypotenuse.
let x be the distance from the base of the building to the bottom of the ladder.
Using Pythagoras' identity in the right triangle
x² + 26² = 30²
x² + 676 = 900 ( subtract 676 from both sides )
x² = 224 ( take the square root of both sides )
x = [tex]\sqrt{224}[/tex] ≈ 15 ft ( to the nearest foot )
Qual o número que subtraído de 27 resulta em 54 negativos?
Translation (For those that don't know Spanish):
Which number that subtracted from 27 results in negative 54?
Need help with this please
Answer:
These are kinda tuff Mandi, sooo remember what's below
Step-by-step explanation:
Use SOH CAH TOA to recall how the trig functions fit on a triangle
SOH: Sin(Ф)= Opp / Hyp
CAH: Cos(Ф)= Adj / Hyp
TOA: Tan(Ф) = Opp / Adj
now fine one of the above functions that has the 3 things you are working with. 2 knowns, and 1 unknown
also we know that the angle at the right tip of the triangle is 90-59= 31°
we know that b/c the inside angles of a triangle always add to 180 and there is already a 90° so we only have 80 left, which the 59° is part of, so 31 is the other, now put that info into one of the above formulas
x= adjacent side
and we know the angle and hypotenuse side. find the formula with those parts. I see Cos has those or CAH... to help remember how those fit
Cos(31) = x / 17
17*cos(31) = x
14.5718 = x
there is your answer, understand how I got it? :)
Okay last question, please someone help me !
Answer:
hey mate!!
Step-by-step explanation:
-28 is the answer
Answer:
-28
Step-by-step explanation:
A scooter costs $160. A bicycle costs 20% more than the scooter. How much does the bicycle cost? ?
Answer:
$192
Step-by-step explanation:
160 = 100% or 1.00
20% = 0.2 + 1.00
= 1.20
160 x 1.20 = $192
Answer:
$192
Step-by-step explanation:
$160 + 20% = $192
Which is closest to the surface area of the figure?
Someone help and please make sure it’s right
Answer:
20°
Step-by-step explanation:
Look at the attached photo.
∠a and ∠e are equal because they are vertical angles.
So, m∠a = 110°
Then, ∠f is an exterior angle to angles a and c. So,
m∠f = m∠a + m∠c
Substitute and solve.
130 = 110 + m∠c
m∠c = 20°
Then, ∠c and ∠d are vertical angles so they are equal.
m∠c = m∠d
m∠d = 20°
I hope this helps! Feel free to ask any questions!
at the post office 45% of packages ship as priorty mail if 160 packages are shipped today,how many will NOT go as priorty mail. IF YOU CAN HELP I WOULD GREATLY APPRECIATE IT :)))
Which statement is NOT true concerning a linear equation?
1. Neither x nor y can appear as an exponent or a radical
2. The variables x and y can be multipled together
3. The variables x and y must have exponent of 1
4. Neither x nor y can appear in a denominator
The statement that is false is:
"The variables x and y can be multiplied together"
Which statement is not true?
The general linear equation is given by:
y = a*x +b
Where a is the slope and b is the y-intercept.
The statement that is evidently false about the above general equation is:
"The variables x and y can be multiplied together"
y depends linearly on x, so these variables can't be multiplied together.
If you want to learn more about linear equations:
https://brainly.com/question/1884491
#SPJ1
To build a garden bed, James bought 36 feet of wood. If he makes the length of the garden 10 feet, what will the width be?
10*2 = 20
36 - 20 = 16
16 / 2 = 8
Answer is 8
x+(y+1) divided by 5
Answer:
uhm so you'd assume y is more than 5 so maybe try x +(7+1) /5
now do x + 8 /5. x must be like 7 so
x= 7 and y= 7 so it is 7 + (7+1) divided by 5 which is 3 I believe
simplifying it just as is is more like x + (y+1) / 5
your welcome :3
Step-by-step explanation:
Solve the expression 9 + (20 x one fourth) − 6 ÷ 2 using PEMDAS.
Answer: B
Step-by-step explanation:
I did the test
75%
a) Complete the table of values for y = x
YA
в с
6
Х
0.5
1
2
3
4
5
у
1.5
0.75
4
b) Which is the correct curve for y = ?
3
2
1
O
1
e
ED
Bi
i
**
Type here to search
lije
Step-by-step explanation:
a) 3/0.5= 6
3/1=3
3/2=1.5
3/3=1
3/4=0.75
b)A as that's the only one that corresponds the the answers in the table
Step-by-step explanation:
3/0.5=6
3/1=3
3/2=1.5
3/3=1
3/4=0.75
Find the value of x. Round to the nearest tenth if needed.
16-2t=5t+9?????????????????????????????????????
Answer:
t=1
Step-by-step explanation:
16-2t=5t+9 (add 2t)
16=7t + 9 (subtract 9)
7=7t (divide 7)
t=1
Answer:
t=1
Step-by-step explanation:
step one : rearrange terms
16−2=5+9
−2+16=5+9
step two: subtract 16 from both sides of the equation
−2+16=5+9
−2+16−16=5+9−16
step three: simplify
−2=5−7
step four:Subtract 5t from both sides of the equation
−2=5−7
−2−5=5−7−5
step five: combine like terms
−7=−7
step six: divide
−7 /−7 =−7/−7
Find the explicit rule: 2, 6, 18, 54, 162
Answer:
f(n) = 2 × [tex]3^{n-1}[/tex]
Step-by-step explanation:
In order to write an explicit rule for a geometric function, you need to know the common ratio; you can find the common ratio by dividing two consecutive terms:
6 ÷ 2 = 3, 18 ÷ 6 = 3, 54 ÷ 18 = 3, etc..
Now you know the common ratio is 3. At this point you can write your explicit function following the rule f(n) = [1st term] × [common ratio]^(n-1):
f(n) = 2 × 3^(n-1)