Answer:
The pine is 12 m tall and the fir is 12 m tall
Step-by-step explanation:
System of Equations
Let's call:
x = height of a pine tree
y = height of a fir tree
The combined height of one fir tree and one pine tree is 21 meters. This leads to the equation:
x + y = 21 [1]
The height of 4 fir trees is 24 meters taller than one pine tree:
4y = x + 24 [2]
From [1]:
x = 21 - y [3]
Substituting in [2]:
4y = 21 - y + 24
Adding y:
5y = 45
Dividing by 5:
y = 9
Substituting in [3]:
x = 21 - 9 = 12
The pine is 12 m tall and the fir is 12 m tall
Select all the expressions that are equivalent to 16x - 12 - 24x + 4
1) 4 + 16x - 12(1 + 2x)
2) 40x - 16
3) 16x - 24x - 4 + 12
4) -8x - 8
Answer:
(1) and (4)
Step-by-step explanation:
4 + 16x - 12(1 + 2x) = 4 + 16x - 12 - 24x
4 + 16x - 12 - 24x = 16x - 12 - 24x + 4
- 24x + 16x = -8x
- 12 + 4 = -8
Which creates -8x - 8
Please Help :D
助けてください
Answer:
1. false
2. true
3. false
4. false
Step-by-step explanation:
1. 128 is not equal to 125
2. 119.7 = 119.7
3. 13.2 is not equal to 1.32
4. 5.88 is not equal to 12
Solve for x.
-42 - 3 = -11
pls and thank you:)
Answer:
there is no any x
Step-by-step explanation:
but if you want to say -42x-3= -11
-42x-3+3= -11+3
-42x=8
-42x/-42=8/-42
x= -8/42
= -4/21
or if you want to say -42-3x= -11
-42+42-3x= -11+42
-3x= 31
-3x/-3=31/-3
x = -31/3
hope it's helpful ❤❤❤
THANK YOU❤
Answer:
The answer is -45 = -11
Step-by-step explanation:
Subtract 3 from − 42 .
Hoped this helped!
Brainly, Please?
What are the roots of the equation?
10x2 - 6x + 4 = -3x
Answer:
(3 +/- i*sqrt(151) / 20 (no real solutions)
Step-by-step explanation:
10x^2 - 6x + 4 = -3x
Add 3x to both sides
10x^2 - 6x + 4 + 3x = -3x + 3x
10x^2 - 6x + 4 + 3x = 0
Add like terms
10x^2 - 3x + 4 = 0
We have to use quadratic formula to find the answers
For this equation, a = 10, b = -3 and c = 4
Note: +/- is plus or minus
Quadratic formula:
x = (-b +/- sqrt(b^2 - 4ac)) / 2a
x = (-(-3) +/- sqrt(-3^2 - 4(10)(4))) / 2(10)
x = (3 +/- sqrt(9 - 160)) / 20
x = (3 +/- sqrt(-151) / 20
x = (3 +/- i*sqrt(151) / 20
if there's a "-" sign inside a square root, it will give you an imaginary number.
Example:
-sqrt(9) = -3
sqrt(-9) = 3i (first you will ignore the "- " sign, then square the number. After finding the square root, take that '-' sign and turn it to an "i")
So for sqrt(-151), 151 is not a perfect square, so you will get a decimal number. Leave it as it is:
sqrt(151). We can't forget about the "-". Turn the minus into a sign.
It will be i*sqrt(151)
Imaginary numbers can't be simplified, so this is the answer.
(3 +/- i*sqrt(151) / 20
Which fraction is equal to 0.5 7?
A. 19/30
B. 19/33
C. 26/45
D. 52/99
The correct answer for fraction equal to 0.57 is [tex]\dfrac{19}{33}[/tex] and [tex]\dfrac{26}{45}[/tex]. The correct 0ptions are C and B.
What is fraction?
A fraction is a numerical value that has both numerator and denominator.
Given Number:
A)
[tex]\dfrac{19}{30} = 0.63[/tex]
[tex]0.63[/tex] ≠ [tex]0.57[/tex]
B)
[tex]\dfrac{19}{33} = 0.5757[/tex]
[tex]0.57 = 0.57[/tex]
C)
[tex]\dfrac{26}{45} = 0.5777[/tex]
[tex]0.57 = 0.57[/tex]
D)
[tex]\dfrac{52}{99} = 0.52[/tex]
[tex]0.57[/tex] ≠ [tex]0.52[/tex]
The correct fractions are [tex]\dfrac{19}{33}[/tex] and [tex]\dfrac{26}{45}[/tex] .The correct options are C and B.
Learn more about fractions here:
https://brainly.com/question/29766013
#SPJ6
-4x – 6 = -3.8 - 3x – 10
Answer:
[tex]x=7.8[/tex]
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
Hope this helps :)
-ilovejiminssi♡
Answer:
x=7.8
Step-by-step explanation:
Brainliest pls if this helps
Leyan bought 234 pounds of apples for $1.32 per pound, 112 pounds of peaches for $1.20 per pound, and some tomatoes, all from a grocery store. The total cost of his purchase was $9.63. How much money did Leyan spend on tomatoes?
Answer: See explanation
Step-by-step explanation:
I think your question isn't well written and that 234 was meant to be 2.34 and 112 was meant to be 1.12
Let the amount spent on tomatoes be x.
The information given in the question can then be used to form an equation as thus:
Apples + Peaches + Tomatoes = $9.63
(2.34 × $1.32) + (1.12 × $1.20) + x = $9.63
$3.0888 + $1.344 + x = $9.63
x = $9.63 - ($3.0888 + $1.344)
x = $9.63 - $4.4328
x = $5.1972
The amount spent on tomatoes will be $5.1972
Answer:
The answer is 4.2 I did this question already
Step-by-step explanation: You multiply 2 3/4 and 1.32 and then add that to the product of the 1 1/2 peaches for 1.20 per pound, then subtract the answer from 9.63 to get the solution for x.
The radius of a circle is 10 meters. What is the area of a sector bounded by a 45° arc?
45°
r=10 m
Give the exact answer in simplest form.
Answer:
The area of the circular sector is approximately 39.269 square meters.
Step-by-step explanation:
A circular sector is a segment of a circle, whose area ([tex]A[/tex]), measured in square meters, is determined by this formula:
[tex]A = \frac{\theta}{2} \cdot r^{2}[/tex] (1)
Where:
[tex]\theta[/tex] - Central angle, measured in radians.
[tex]r[/tex] - Radius, measured in meters.
If we know that [tex]\theta = \frac{\pi}{4}[/tex] and [tex]r = 10\,m[/tex], then the area of the circular sector is:
[tex]A = \frac{\pi}{8} \cdot (10\,m)^{2}[/tex]
[tex]A \approx 39.269\,m^{2}[/tex]
The area of the circular sector is approximately 39.269 square meters.
Answer:
39.269
Step-by-step explanation:
Which of the following proportions is false?
Answer:
D is false
Step-by-step explanation:
Brenda had $23 to spend on two notebooks. After buying them she had $19. How much was each notebook?
Answer:
Brenda has 4 dollars
Step-by-step explanation:
Answer:
Each notebooks cost $2
Step-by-step explanation:
23-x=19
x=4
But she had 2 notebooks
So that means 4÷2=2
Help if you can please..
Answer:
78
Step-by-step explanation:
42+36=78
Answer:
78
Step-by-step explanation:
42 + 36 = 78
kekeke9ieie
Needdddddd helpppppppp ASAP
Answer:
4th option, always increasing
Step-by-step explanation:
It’s always increasing because the graph is concave up
If you get it right/wrong, do let me know
Which expression is equivalent to (7x3}(x8}
Answer:
[tex]168[/tex]
Step-by-step explanation:
Because we are missing the options to this question we will have to answer this question using what we know.
[tex]7\times3\times8[/tex]
Solve
[tex]7\times3=21[/tex]
[tex]21\times8=168[/tex]
[tex]=168[/tex]
All you have to do now is find the expression that also equals to 168, when you do that option is your answer.
Hope this helps.
One month lashonda rented 7 movies and 9 video games for a total of $73 the next month she rented 5 movies and 3 video games for a total of $29 find the rental cost for each movie and each video game
Answer:
Solve a system of equations with two unknowns x and y
where x is the rental price for the movie and y is the rent for video games
7x + 9y = 73
5x + 3y = 29
Solving the result: x = $ 1.75, y = $ 6.75
Step-by-step explanation:
what is –7y = –8y + 2
Answer:
Step-by-step explanation:
Have a good day
Answer:
y= 2
Step-by-step explanation:
hope this helps:)))
work out, giving your answer as a mixed number:
4 2/3 + 1 3/4 =
Answer:
6 5/12.
Step-by-step explanation:
4 2/3 + 1 3/4
= 4 + 1 + 2/3 + 3/4
= 5 + 8/12 + 9/12
= 5 + 17/12
= 5 + 1 5/12
= 6 5/12.
If the scale factor for the dilation shown is 3, which is
the length of B'C'?
O 5/3
O 8
O 12
O 15
Answer:
the answer is D, 13
Step-by-step explanation:
I just did the assignment
Answer:
D 15
Step-by-step explanation:
-8j+14=-2(4j-7) what is this answer ?
Answer:
Infinite amount of solutions.
Step-by-step explanation:
It's an interval notation. (∞,∞)
Answer:
0=0
Step-by-step explanation:
-2*4j+2*j
-8j+14=-8j+14
-8j+14-14=-8j+14-14
-8j=-8j
0=0
what is 2 +2 this 65 points.
Answer:
4
Step-by-step explanation:
2 + 2 = 4 lol
YALL HELP ME PLEASE ITS URGENT
48-7)x(56+19 need help with dat
Answer:
3075 should be the answer.
Step-by-step explanation:
48-7)x(56+19
(48 - 7) x (56 + 19)
41 x 75
3075
Right answer gets brainlist
Answer:
10 feet
Step-by-step explanation:
[tex] {r} = \sqrt{ \frac{V_{silo} }{\pi \times h} } \\ \\ {r} = \sqrt{ \frac{11938}{3.14 \times 38} } \\ \\ {r} = \sqrt{ \frac{11938}{119.32} } \\ \\r = \sqrt{100.050285} \\ \\ r = 10.0025139 \\ \\ r \approx \: 10\: ft[/tex]
A $350 purchase is discounted 15%. You use a 20% coupon. What is the total paid?
Answer:
238 should be the answer
Step-by-step explanation:
Find the lateral surface area of the cylinder. Round your answer to the nearest tenth.
Radius - 7
height- 2
Answer: 87.9
Step-by-step explanation:
Since the formula is 2 x pi x radius x height, we plug the equation in.
If you use “3.14” for pi, it’s 2 x 3.14 x 7 x 2 = 87.9 (rounded to the nearest tenth)
2 x pi x 7 x 2 = 87.96 (88 rounded to the tenth)
It takes 4 pounds of apples to make 6 cups of applesauce.
Select all the rates that are equvalent to the rate in the statement above.
Group of answer choices
5:7
10:15
6:9
1:2
14:21
8:10
Answer:
Step-by-step explanation:
4lbs of apples to 6 cups of apple sauce
we can write this as 2:3
the correct choices: 6:9 and 14:21
One winter day, the temperature was -15 degrees Fahrenheit. Later that day the temperature rose 12 degrees Fahrenheit to reach the high temperature for the day. If t represents the high temperature what is t.
-3
-15 plus 12 is -3
so T= -3
Use the slope-intercept form to graph the equation HELP PLEASE
Step-by-step explanation:
The picture in the attachment is the answer
If f(x) = 3x + 1, what is one possible value of x for
which 6
Answer:
1/3
Step-by-step explanation:
Someone help me please !!
NEED HELP RN ILL GIVE YOU BRAINLIST
The front of this button has a radius of 32 mm.
Which equation could be used to find the area of the front of the button in square millimeters?
A
A=32⋅π
B
A=64⋅π
C
A=π⋅322
D
A=π⋅642
Answer:
A
Step-by-step explanation:
You multiply it and since 32mm is half it would be 64
Answer:
none of them, it would be A = pi * 32^2
Step-by-step explanation:
