Answer:
Step-by-step explanation:
138 cm² = (x + 2) × ( 2x + 3) x 1/2
138 cm² = x + 2 × 2x + ) x 1/2
138 cm² = x + 4x + x * 0.5
0.5/138 cm² = 6x * 0.5 /0.5
6/69cm² = 6x/6
x = 11.5
This might be wrong so just take the square root of 138.
Solve the system using linear combination. Show all work.
5x + 3y = 41
3х - 6y = 9
The acceleration (in m/s/s) of a body is directly proportional to the force (in N for newton) acting on the body. If a certain body accelerates at 10 m/s/s when subjected to a force of 3 N, what will the acceleration be under a force of 8 N??
Answer:
26.667
Step-by-step explanation:
Force is directly proportional to mass and acceleration.
So Let's first bring the parameters.
F=3N, A=10m/s M=?
F=ma:.
3=Mx10,. 3=10M
M=3/10 M= 0.3
So we will use that to find the acceleration of force 8N.
F=Ma:. 8=0.3xa
8=0.3a
A=8/0.3
A=26.667.
In which interval is the median distance
the median of the given frequency distribution is 470. Since \frac{80}{2} = 40 lies in the cumulative frequency of the class interval 24 – 32, so 24 – 32 belongs to the median class interval. Lower limit of median class interval = ℓ = 24. Hence, the median of the given frequency distribution = 26
help pls question/problem in image
Answer:
It's rotated around (0,0)
Step-by-step explanation:
Find area of square
Pls help
Step-by-step explanation:
Area of square
[tex] {s}^{2} [/tex]
[tex]6.7 \times 6.7 = 44.89 {mm}^{2} [/tex]
Which is the most accurate way to estimate 66% of 46?
A: 2/3 x 47
B: 1/3 x 45
C: 1/3 x 47
D: 2/3 x 45
Answer:
30 Don't use your calculator.
Step-by-step explanation:
This is an estimation question, so you have to throw your calculator out of your reach.
You have to know that 66% is nearly 2/3 So the correct answer cannot be B or C
It must be A or D.
The problem is that 3 doesn't go into 46 so you have to change it to something that is divisible by 3. Of the numbers given, the best one is 45
2/3 * 45 = 2 * 15 = 30
How close is that (remember you have to give 30 as your answer)?
The actual answer is 30.36 which makes your estimate very good.
Tuesday Evaluate the Expression: Use PEMDAS. 80 - 42+8
Answer:
30
Step-by-step explanation:
Using BODMAS
*80-50 (42+8)
*30
Which of the following leading terms would make the expression a perfect square trinomial?
____ −140xy+100y2
A) 49x^2
B) 25x^2
C) 81x^2
D) 64x^2
A tour company has a boat that sits at most 40 passengers. For a cruise on the Hudson River they charge $12 per adult and $5 per child. They will only take the boat out if they have sold at least $250 worth of tickets. Let a be the number of adults who take the cruise and c be the number of children.
Answer:the answer is 2
Step-by-step explanation:
If you can these questions hElp
I think 7 is B but am not 100% sure
Answer:
7. Can't see the triangle
8. F
9. D
Step-by-step explanation:
8. [tex]15*\frac{1}{4} = 3\frac{3}{4}[/tex] [tex]16*\frac{1}{4} =4[/tex]
9. An obtuse angle is any angle bigger than [tex]90^{o}[/tex] (right angle) but smaller than [tex]180^{o}[/tex] (reflex angle)
Expand and Simplify: (2x-1)(3x-2)
Answer:
6x^2-7x+2
Step-by-step explanation:
Given data
We have the expression
(2x-1)(3x-2)
First let us open the bracket
2x(3x-2)-1(3x-2)
6x^2-4x-3x+2
Collect like terms
6x^2-7x+2
12. Solve for x. x = ___________
Step-by-step explanation:
this is math right what grade is this
Can you help me with my work
Answer:
all u have to do is count how many 2 there are then put that in and do the same for the 8
Step-by-step explanation:
Answer:
[tex]2^{6} *8^{4}[/tex]
Step-by-step explanation:
Sarah uses 2 eggs for each batch
of 12 muffins that she bakes. How
many muffins can she bake with a full
carton of 12 eggs?
Answer:
I think it would be 72
Step-by-step explanation:
You would have to divided 2 by 12, which is 6. Then, you would have to multiply 6 by 12, which i s 72. I hope this is right, if not I'm sorry. I really hoped this helped :D
Andrew is downloading photos from his camera’s memory cards. He downloaded 2,145 megabytes (MB) from a total of 250 normal-quality photos and 100 best-quality photos from his smaller memory card. From the larger memory card, he downloaded 6,330 MB from a total of 500 normal-quality photos and 400 best-quality photos. The graph shows a system of equations representing the two downloads. How many MB is a photo of normal quality and how many MB is a photo of best quality?
Answer:
it is c
Step-by-step explanation:
lkhbkgbigligi;g;og
What is the volume of this solid figure made with cubes
Answer:
15
Step-by-step explanation:
three times five = fifteen and height is 1
Answer:
15
Step-by-step explanation:
multiply the length x width x height
Nick needs to raise at least $320 for his trip. He has $80 saved already, and he makes $40 per yard that he mows. Write and solve an inequality to solve for how many yards, "x," Nick must mow to earn the money.
Answer: Nick must now at least 6 yards.
Step-by-step explanation:
Since Nick has $80 saved already, and he makes $40 per yard that he mows, thus can be put up in an equation as:
= 80 + 40y
where y = number of yards
Since Nick needs to raise at least $320 for his trip, the equation to solve this will be:
80 + 40x ≥ 320
40x ≥ 320 - 80
40x ≥ 240
x ≥ 240/40
x ≥ 6
Therefore, Nick must now at least 6 yards.
This table represents Mindy's check register. Her checking account had a balance of $647.60 on November 20.
Use the information in the check register to determine the balance of Mindy's checking account after the transaction on December 10.
Enter your answer in the box.
Answer:
910.94
i got it right
El área de un rectángulo es 600 cm2 . Calcula las dimensiones del rectángulo sabiendo que su perímetro es 100 metros.
Answer:
Step-by-step explanation:
The area of a rectangle is 600 cm2. Calculate the dimensions of the rectangle knowing that its perimeter is 100 meters.
The formula for the area of a triangle =
Length × Width = 600 cm²
LW = 600
W = 600/L
Perimeter of a rectangle = 2L + 2W = 100m
2L + 2W = 100
we substitute
2L + 2(600/L ) = 100
2L + 1200/L = 100
Multiple all through by L
2L² + 1200 = 100L
2L² - 100L + 1200 = 0
We factorise
2L² - 60L - 40L + 1200= 0
Las dimensiones del rectángulo serían:
Longitud = 30m
Ancho = 20m
Halla el largo y el anchoDado que,
Área del rectángulo = 600[tex]m^2[/tex]
Sabemos,
Área del rectángulo = l × b
entonces,
l × b = 600[tex]m^2[/tex]
⇒ l = 600/b ...(i)
A continuación, tenemos,
Perímetro = 100m
Lo sabemos,
Perímetro del rectángulo = 2(l + b)
⇒ 100 = 2(l + b)
al poner (i), tenemos,
⇒ [tex]100/2 = (600/b + b)[/tex]
⇒ [tex](600 + b^2)/b = 50[/tex]
al resolver esto, obtenemos;
[tex]b^2 + 600 = 50b[/tex]
⇒ [tex]b^2 - 50b + 600 = 0[/tex]
⇒ [tex]b^2 - 30b - 20b + 600= 0[/tex]
⇒ [tex]b(b - 30) - 20(b - 30) = 0[/tex]
⇒ [tex](b - 20) (b - 30)[/tex]
∵ [tex]b = 20 m, b = 30m[/tex]
poniendo el valor de b, podemos encontrar:
[tex]l = 600/20[/tex]
∵ [tex]l = 30 m[/tex]
∵ Longitud = 30m
Ancho = 20m
Learn more about " rectángulo" here:
brainly.com/question/17048958
Solve the equation for all values of x by completing the square.
x^2+4x-15=0
Answer:
x = ± √ 19 - 2
-12 > -15
True or False?
Answer:
t
Step-by-step explanation:
-12 is closer to zero than -15
Answer: True, -12 is closer to 0 than -15. When it comes to negative numbers the number closest to 0 is always the biggest.
What is 2x + 5 + x − 6 + 3x =?
A polygon has 6 sides. The exterior angles are 80 degrees, 56 degrees, 61 degrees, 43 degrees, 92 degrees, and (2 x) degrees. What is the value of x? x =
Answer:
14 degrees is right! just wanted to add some credibility(?) idrk. best of luck!
Step-by-step explanation:
The value of x in the polygon that has six sides(hexagon) is 14.
What is a hexagon?An hexagon is a polygon with six sides.
The exterior angles of the hexagon are as follows:
80°, 56°, 61°, 43°, 92°, and (2x)°.
Therefore,
sum of exterior angle = 360°
Hence,
80 + 56 + 61 + 43 + 92 + 2x = 360
332 + 2x = 360
2x = 360 - 332
2x = 28
x = 28 / 2
x = 14
learn more on hexagon here: https://brainly.com/question/15902950
Solve the system using the substitution method. -3x – 4y
= 2 x = y - 3
Answer:
y= −5/4x
heart if it helped!
Anyone know how to answer this question
Answer:
x²+y²=225
Step-by-step explanation:
when centered at the origin the equation of a circle is x²+y²=r²
we are given x and y so 9²+12²=r²
[tex]r^{2} =9^{2} +12^{2}\\ =81+144\\ =225[/tex]
Find the distance between points B and C on the graph. A) 5 B) 17 C) 5 D) 34
Answer: 3 to the right 5 going up i hope that can help a little bit
Step-by-step explanation: plz make brainly
Answer:
d
Step-by-step explanation:
took test
(-6,4); (6-5)
Slope
Giving branliaist answer to the best one
Oi lend a hand here? Math isn't my thing :P
x is less than or equal to 5, really simple
Answer:
C
Step-by-step explanation:
Which one A, B, C, D ??
Answer:
A proportion describes the share of one value for a variable in relation to a whole. It is calculated by dividing the number of times a particular value for a variable has been observed, by the total number of values in the population.
So it is B! Mark me brainliest plzz!
Step-by-step explanation:
Answer:
the correct answer would be A
Step-by-step explanation:
brainlest pls
What’s the volume will give brainliest
Answer:
2,860cm³
Step-by-step explanation:
just multiply all of the numbers.