Answer:
120
Step-by-step explanation:
4x, 7x, 9x
9x=54
we need to find 4x+7x+9x
9x=54⇒x=6
4x+7x+9x=20x=20×6=120
Answer:
120 sweets
Step-by-step explanation:
4:7:9
Total Parts = 4+7+9=20
Oldest(9)= 9/20
9/20P= 54 Sweets
Total Sweets = 54/ (9/20) =120
Please help! Will give brainlist if correct. If possible pls explain how you got the answer
Answer:
30 I think
Step-by-step explanation:
Area of a triangle is (base×height) ÷2
So that means that to solve this you'd need to do 20 (the base) ×3 (the height). This gives you 60; then you divide it by 2. This gives you 30.
Find the inverse of each of the given functions.
f(x) = 4x - 12
PLS HELP ME WILL GIVE BRAINLIEST
Answer:
31.2
Step-by-step explanation:
Hope it helps !!:)
Does -6^2 = (-6)^2? Explain your answer.
PLEASE HELP!!!!!!!
Answer:
No it doesn't
You see when something is in parenthesis () that means it isolated as a whole. When it says (-6)^2 that means Negative six squared. When it says -6^2 that means only the 6 will be squared since they are not parenthesized. So by isolating the two figures both of those numbers together will be squared whereas when they arent isolated only one of them will be squared.
(-6)^2 = -6 x -6 = 36
-6^2= - x 6 x 6= -36
Answer:
-6^2 is same as (-6)^2
Therefore, - 6^2 is - 6×-6 WHICH IS EQUALS TO 36
(-6)^2 = - 6×-6=36
36=36 is the answer.
sin 20° cos 40° cos 80° = 1
Answer:
I think that the answer is 1/8 NOT 1
Step-by-step explanation:
write the equation, please.
Answer:
x^2+y^2 = 49
Step-by-step explanation:
This is a circle.
The generic equation of a circle is
(x-h)^2+ (y-k)^2 = r^2
where (h,k) is the center and r is the radius
The center of the circle is at the origin which is (0,0)
The radius is 7
(x-0)^2+(y-0)^2 = 7^2
x^2+y^2 = 49
Answer:
[tex] \displaystyle {x}^{2} + {y}^{2} = 49[/tex]
Step-by-step explanation:
we are given a circle
we want to figure out the equation of the circle
remember that,
[tex] \rm \displaystyle E _{c} : (x - {h)}^{2} + (y - k {)}^{2} = {r}^{2} [/tex]
(h,k) are the centre of the circle
we can clearly see that the centre of the circle is (0,0) and the redious is 7 units
thus substitute:
[tex] \displaystyle (x - {0)}^{2} + (y - 0{)}^{2} = {7}^{2} [/tex]
further simplification is needed:
[tex] \displaystyle {x}^{2} + {y}^{2} = 49[/tex]
and we are done!
The area of a square playground (in square feet) can be represented by x2 - 30x + 225. How many feet is the perimeter of the playground if x = 25?
Answer:
40
Step-by-step explanation:
Substitute 25 for x
[tex] {25}^{2} - 30(25) + 225 = 100[/tex]
100 is the area of the square so that means
10 is the side length of each side of the square.
Multiply 4 by 10 to get the perimeter.
[tex]4 \times 10 = 40[/tex]
I need help plz. Can anyone help me ASAP?
Answer:
6 + 4d + 11c
Step-by-step explanation:
In order to find the perimeter, you add up all the side lengths which would be expressions in this case
(10c + 10) + (c + 5) + (4d - 9)
add like terms: (10c + c) + (10 + 5 - 9) +4d
= 11c + 6 + 4d
which is the same as 6 + 4d + 11c, I just added them in a different order.
Juan ran the lemonade stand for 3 more days after his
first day profit of $12. Each day, he used the money
from sales to purchase more lemons, cups, and sugar
to make more lemonade. The table shows how much
he spent and earned each day
What is the expression needed to find his total
eamings?
52
16-7-22 - 12 - 18-9
16-22-18-7-12-9
16-22-18-7-12-9
16 - 7 + 22-12-18-9
The answer: C/16 + (–7) + 22 + (–12)
What are my zeros (x^2 - 8x + 1)?
Answer:
x= 7.87298334621 x=.12701665379
Step-by-step explanation:
This is in standard form so we have to factor this into
x^2-8x + 16 + 1 = 16
(x-4)^2 = 15
(x-4) = [tex]\sqrt{15\\}[/tex]
x-4= ± 3.87298334621
x-4 = 3.87298334621 x-4= -3.87298334621
x= 7.87298334621 x=.12701665379
A cat can eat 1/4 of a bag of food in 1/2 of a week. How much food can the cat eat in 1 week
Answer:
1/2 of a bag in a full week
Step-by-step explanation:
If they can eat a fourth of a bag and a half of a week then they can eat a half of a bag and a full week because to have is 1/4+1/4 which equals 1/2
8. What is the surface area of the pyramid
shown below?
Answer:
Surface area of square pyramid = 380 m²
Step-by-step explanation:
Given:
Side of square base =10 m
Height of Square pyramid = 14 m
Find:
Surface area of square pyramid
Computation:
Surface area of square pyramid = Surface area of Base + 4[Surface area of triangle]
Surface area of square pyramid = [side x side] + 4[(1/2)(b)(h)]
Surface area of square pyramid = [10 x 10] + 4[(1/2)(10)(14)]
Surface area of square pyramid = 100 + 4[70]
Surface area of square pyramid = 100 + 280
Surface area of square pyramid = 380 m²
Hey, I really need help on this! This work is really hard and I just need a little help to get this right. Thank you!
B. 40 meters is the answer.
Answer:
40 meters
Step-by-step explanation:
100 centimeters= 1 meter
4000 centimeters= 4000÷100
=40 meters
A regular hexagon is dilated by a scale factor of 2.5. What happens to the perimeter in this process?
Answer:
Step-by-step explanation:
perimeter of larger hexagon=2.5 perimeter of smaller hexagon
Please help with Volume
Given:
Length of the cuboid tank = 4 m
Breadth = 2.5 m
Height = 2.4 m
One third of the tank is filled with water.
1 cubic meter = 1000 liters.
To find:
The quantity of the water in the tank.
Solution:
Volume of a cuboid is:
[tex]V=l\times b\times h[/tex]
Where, l is length, b is breadth and h is the height.
The volume of the tank is :
[tex]V=4\times 2.5\times 2.4[/tex]
[tex]V=24[/tex]
Volume of tank is 24 cubic meter.
One third of the tank is filled with water. So, the volume of the water is
[tex]\dfrac{24}{3}=8[/tex]
The volume of water is 8 cubic meters.
We have,
1 cubic meter = 1000 liters.
8 cubic meter = 8000 liters.
Therefore, the quantity of the water in the tank is 8000 liters.
Joey is buying a new couch for his living room. The couch costs $379.00. He has a choice of using a coupon for 5% off before taxes, getting a rebate of $20 after taxes, or getting a discount of $18 before taxes. If the sales tax rate is 8%, which option is the better deal?
Answer:
rebate of 20 after taxes
Step-by-step explanation:
Answer:
rebate of 20 after taxes
Step-by-step explanation:
Use point-slope form to write the equation of the line with a slope of 5/2 that goes through the point (-3,-6).
Answer:
4, (2,-4)
m= 5,(1,)
3,( 2,9)
Answer:
[tex]y+6=\frac{5}{2} (x+3)[/tex]
Step-by-step explanation:
point-slope formula: [tex]y-y_1=m(x-x_1)[/tex]
where m = slope and the point would be [tex](x_1,y_1)[/tex]
point-slope form: [tex]y+6=\frac{5}{2}(x+3)[/tex]
If you want to learn more about point-slope form,
Go to: https://www.albert.io/blog/point-slope-form/#What_is_point_slope_form
Which expression is the additive inverse of 25? A. –25 B. C. D. 25
Raw cake batter starts at a thickness of 2 centimeters in a pan but but grows at 0.15 centimeters every minute in the oven. How tall will the cake be after a certain numbers of minutes?
y=1/3 x^2+2x+5
what is the minimum value of this equation
Answer:
Min: (-3,2)
Hope this helps!!
PLZ HELP! AND NO LINKS I will mark the brainiest to whoever can answer this!!!!!!!!
Answer:
A. 7
Step-by-step explanation:
The rest of the numbers are in the 20's and 30's. 7 is obviously a single digit number, meaning that it is the outlier.
A man started a journey at 09:30 h and arrived at his destination in the same time zone, at 13:30 h on the same day. If his average speed was 30km/h, then the distance, in km, for the journey was
Answer:
120km
Step-by-step explanation:
We multiply 30km (thats how fast he was moving per hour) by the number of total hours during the journey, which is 4, 30 x 4 is 120km.
What is the solution set of the quadratic inequality x^2+x-2 ≥ 0
{x| x ≤ -2 or x ≥ 1}
{x| x ≤ -1 or x ≥ 2}
{x| x ≥ -2 or x ≤ 1}
{x| x ≥ -1 or x ≤ 2}
Find the zeros of the following factored quadratic function.
f(x) = (9x - 1)(7x - 3)
Answer:
63x^2-34x+3
Step-by-step explanation:
Using the graph, determine the coordinates of the vertex of the parabola
Answer:
The vertex is (3,1)
Step-by-step explanation:
Answer:
(3, 1)
Step-by-step explanation:
Locate the vertex. Here it represents the maximum value of this quadratic function. The x-coordinate shown is 3 and the y-coordinate is 1. Thus, the vertex is (3, 1).
An architect is constructing a model in the shape of a triangle that has one side length of 9 centimeters and another side length of 8 centimeters. Which
Answer:
See Explanation
Step-by-step explanation:
Given
[tex]Sides:\ 9cm\ and\ 8cm[/tex]
The question is incomplete, as what is required is not state. However, a possible question could be to determine the possible side length of the third side.
To do this, we make use of the triangle inequality theorem which states that:
Given three sides (a, b and c) of a triangle, the following inequalities exist.
[tex]a + b > c[/tex]
[tex]a + c > b[/tex]
[tex]b + c > a[/tex]
Let a and b represent the two sides such that:
[tex]a = 9[/tex]
[tex]b = 8[/tex]
The inequalities become:
[tex]9 + 8 > c[/tex]
[tex]9 + c > 8[/tex]
[tex]8 + c > 9[/tex]
Solve for c in each:
[tex]9 + 8 > c[/tex]
[tex]17 > c[/tex]
[tex]c < 17[/tex]
[tex]9 + c > 8[/tex]
[tex]c > 8 - 9[/tex]
[tex]c > - 1[/tex]
[tex]8 + c > 9[/tex]
[tex]c >9 - 8[/tex]
[tex]c >1[/tex]
The value of c must be positive, so, we consider;
[tex]c >1[/tex] and [tex]c < 17[/tex]
Rewrite:
[tex]1 < c[/tex] and [tex]c < 17[/tex]
Combine both
[tex]1 < c < 17[/tex]
Hence, the value of c is:
[tex]c = (1,17)[/tex]
I This correct? I don’t fell confident about it and it’s worth 100 points if a did a mistake pls help me fix it and explain?
HELP! Find the area of the parallelogram the figure is not drawn to scale
The area of the parallelogram in the diagram given is: 1,330 in.²
What is the Area of a Parallelogram?Area of a parallelogram = (base × height)
Given the following dimensions of the parallelogram:
Base = 38 in.
Height = 35 in.
Area of the parallelogram = 38 × 35
Area of the parallelogram = 1,330 in.²
Learn more about the area of a parallelogram on:
https://brainly.com/question/3050890
HELP PLEASE THANK YOU
Answer:
∠1 = 103°
Step-by-step explanation:
supplementary angle to 136° = 180° - 136° = 44°
∠1 = 180° - 33° - 44° = 103°
Step-by-step explanation:
Let the unnamed angle in the triangle be x.
x + 136 = 180 (Sum of angles on the same straight line)
x = 180 - 136
= 44
Angle 1 + x + 33 = 180 (Sum of angles in a triangle)
Angle 1 + 44 + 33 = 180
Angle 1 + 77 = 180
Angle 1 = 180 - 77
= 103
pls help i really need it, the question on the picture
Answer:
3/4
Step-by-step explanation: