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Explanation:
We're told that 4/9 kg of baking soda costs $2
We can form the equation
4/9 kg = 2 dollars
We want to know the cost of 1 kg of baking soda, so we'll need to divide both sides by 4/9 to turn the "4/9 kg" into "1 kg"
Therefore,
4/9 kg = 2 dollars
turns into
1 kg = (2 ÷ 4/9) dollars
We could simplify further, but your teacher has decided not to.
help plz
One equation with decimals
f.) 4.5x + 9 = 40
Answer:
x = 6.8
Step-by-step explanation:
Can someone help me I don’t understand this
Use pythagorean theorem to get EG. If you have EG, you also have all the sides of the equilateral triangle.
Anyone????? That can help me answer these
Answer:
5. 3050ft³ (rounded to 3 s.f.)
6. 4190ft³(rounded to 3 s.f.)
7. 4600ft³(rounded to 3 s.f.)
Formulas (For easier reference):
Volume of a cone: pi×r²×[tex]\frac{h}{3}[/tex]
Volume of cylinder: pi×r²×h
Volume of a sphere: [tex]\frac{4}{3}[/tex]×pi×r³
Volume of a hemisphere: [tex]\frac{2}{3}[/tex]×pi×r³
Step-by-step explanation:
You can just apply the formulas to the question:
5. Volume of cone = pi×9²×[tex]\frac{(16-10)}{3}[/tex]
= 162pi
Volume of cylinder = pi×9²×10
= 810pi
Volume of figure = 162pi+810pi
= 972pi
= 3050ft³ (rounded to 3 s.f.)
6. Volume of sphere = [tex]\frac{4}{3}[/tex]×pi×10³
= 1333[tex]\frac{1}{3}[/tex]pi
= 4190ft³(rounded to 3 s.f.)
7. Volume of hemisphere = [tex]\frac{2}{3}[/tex]×pi×(26÷2)³
= 1464[tex]\frac{2}{3}[/tex]pi
= 4600ft³(rounded to 3 s.f.)
2(4x + 1) - 3 = ax + b
Which statements are true about the solution to the equation when substituting the
given values for a and b?
Choose all that apply.
A if a = 8 and b = 1, then there is no solution to the equation.
B if a = 4 and b = –2, then there is no solution to the equation.
C if a = 8 and b = -1, then there is exactly one solution to the equation.
Difa - 2 and b = -1, then there is exactly one solution to the equation.
If a = 2 and 6 = 4, then there are infinitely many solutions to the equation.
E
Answer:
c
Step-by-step explanation:
a=8-1/x-b/x
b=8x-1-ax
Tell Weather The Terms Are Like Terms.
1) 3a and -5a
2) 2xy^2 and -x^2y
How many people will 40 spring rolls feed
Answer:
40 people
Step-by-step explanation:
One for each person
through: (1, -1), parallel to y=x+1
How many kilograms equal 22 pounds? [1 pound = 0.454 kilogram
Answer: 9.97903k = 21.99999528
10k = 22.0462p
Step-by-step explanation:
Answer:
B 9.988
LOLOLOLOL
The triangles in the picture are congruent by which method
Answer:
ASA
Step-by-step explanation:
3(2x-5)+4(x+2)
determine the value of of expression #1 when x=4
Answer:
3(2x-5)+4(x+2) =33
Step-by-step explanation:
3(2x-5)+4(x+2)
3(2(4)-5)+4(4+2)
3(8-5)+4(6)
3(3)+24
9+24
33
Hope this helps♥
An arts academy requires there to be 3 teachers for every 75 students and 4 tutors for every 48 students. How many students does the academy have per teacher? Per tutor? How many tutors does the academy need if it has 108 students?
Answer:
A. or B.
Step-by-step explanation:
I
Jayda has 0.5 of her backyard set up for growing vegetables. Of the vegetable area, 0.4 has bell peppers in it. What part of the backyard contains peppers?
please help due in 3 min
m(w) = 8w + 17 looks like the best answer choice for me
Which linear inequality is represented by the graph?
Answer:
D
Step-by-step explanation:
Hope this helps. Pls give brainliest.
24. Michael leaves his house at 0837 and travels by motorcycle to the railway station, which is 27 km from his
house.
(i) If he arrives at the station 36 minutes later, find the average speed at which he travels in km/h.
(ii) If the train, which is due at 0942, is 11 minutes late, how long will he have to wait?
Answer:
i) 45km/hr
ii)29 min
Step-by-step explanation:
average speed = distanced travelled / time elapsed
It took 36min and need to convert to hr
36min x [tex]\frac{hours}{60 min}[/tex] = [tex]\frac{36 hr}{60 min}[/tex] = [tex]\frac{9 }{15 }[/tex] hours
distanced travelled is 27 km;
average speed = 27km / (9/15hr) = 45 km/hr
Add 36min to 0837 becomes 0913, the train will arrive at 0942 and the wait will be the difference of 0942 - 0913 = 29 min
Find the value of x
Answer:
65
Step-by-step explanation:
remember a TRIANGLE always have a 180 degrees total angle,
so 45+70=115
180-115=65
Please write a proof
Answer:
Step-by-step explanation:
∠X ≅∠Z : Given
∠ZYV≅∠XYU
∠ZVY≅∠XUY Because ∠ZYV≅∠XYU, ∠X ≅∠Z.
So ∠YVW≅∠YUW
Draw VU
ΔVWU is an isosceles triange so ∠UVW≅∠VUW
So ∠YVU≅∠YUV
Therefore ΔYVU is also an isosceles triangle and YV = YU
So ΔZYV≅ΔXYU ( ASA)
So XU = ZV ( because of CPCTC)
Therefore XU + WU = ZV = VW : XW = ZV
ΔXWV ≅ΔZWU ( ASA)
Heres my question! pls help if u can
Answer:
18 tiles
Step-by-step explanation:
Area of a floor is 12 × 15 = (12 × 12) × (15 × 12) = 324 inch²
Area of tile is 18 inch²
324 ÷ 18 = 18 tiles
The legs of a right triangle are 6 cm and 12 cm long. Which number is closest to the measure of the
hypotenuse in cm?
a. 6
b. 13
c. 18
d. 72
Answer:
d 72
Step-by-step explanation:
-5.3w+8.0w-11.6=14-25.6+2.7w i need help
Answer:
I’m not sure what you need but this equation has: indefinitely many solutions because they are equivalent
Step-by-step explanation:
-5.3w+8.0w-11.6=14-25.6+2.7w
2.7w-11.6=14-25.6+2.7w
2.7w-11.6= -11.6+2.7w
what is 4984+04272775726378837
here: 4.2727757e+15. Please mark brainliest. Thanks.
what is the slope of the line that passes through the points (7, -5) and (10, -7.5)?
A:
[tex] \frac{5}{6} [/tex]
B:
[tex] \frac{6}{5} [/tex]
C:
[tex] - \frac{5}{6} [/tex]
D:
[tex] - \frac{6}{5} [/tex]
Answer:
C. [tex]-\frac{5}{6}[/tex]
Step-by-step explanation:
just use the equation [tex]slope=\frac{y_2-y_1}{x_2-x_1}[/tex] So our first point (7,-5) will be [tex]x_1=7,y_1=-5[/tex]and our second point (10, -7.5) will be [tex]x_2=10,y_2=-7.5[/tex] Then substitute[tex]slope=\frac{(-7.5)-(-5)}{(10)-(7)}=\frac{-2.5}{3}=-\frac{5}{6}[/tex]Please help if you know trig, will give brainliest! Thank you!
Answer:
sin^2(a) I believe. Delete my response if needed.
Step-by-step explanation:
tan²(α) (2 cos²(α) + sin²(α) - 1)
Recall that sin²(α) + cos²(α) = 1 for all α. Then sin²(α) - 1 = -cos²(α) :
tan²(α) (2 cos²(α) - cos²(α))
tan²(α) cos²(α)
Rewrite tan(α) = sin(α) / cos(α) :
(sin(α) / cos(α))² cos²(α)
(sin²(α) / cos²(α)) cos²(α)
Cancel the factors of cos²(α) :
sin²(α)
A tree is currently 10 feet tall and grows 2 feet per year. Show your work for full credit.
a. Model this scenario with an arithmetic sequence in explicit form. (2)
b. Rewrite the explicit form of the sequence using function notation. (2)
c. How tall will the tree be in 15 years? (1)
Answer:
(a) An = 2n +8
(b) F(n) = 10 + (n-1)2
(c) 38ft tall
Step-by-step explanation:
The tree is currently 10 feet long and grown 2 feet per year.
The arithmetic sequence is
10 , 12, 14 , 16 , 18 ..............
a( initial value) = 10 , d (common difference) = 2
Explicit forms
(a) An = a +(n-1)d
An = 10 + (n-1)2
= 10 + 2n -2
An = 2n +8
(b) F(n) = 10 + (n-1)2
(c) Height of the tree after 15 years
F(15) = 10 + (15-1)2
= 10 + 28
= 38ft
So the tree will be 38ft tall after 15 years.
Elevate 7 x (-7 + 15)
Answer:
-56
Step-by-step explanation:
7 x (-7 + 15)
=7 x (-8)
=-56
hope this helped <3
(x + 26)
(3x)
X=
Helpppp
Answer:
x = 13
General Formulas and Concepts:
Pre-Algebra
Equality PropertiesGeometry
Vertical AnglesStep-by-step explanation:
Step 1: Set up equation
3x = x + 26
Step 2: Solve for x
Subtract x on both sides: 2x = 26Divide 2 on both sides: x = 13NEED HELP! just with the 1st 2
On a number line, which fraction would is to the right of
1/2
A)
2/12
B)
1/3
C)
10/20
D)
16/25
Answer:
B
Step-by-step explanation:
Edge 2020
Answer:d
Step-by-step explanation:
I got it right 100%
what is the square root of 81 by the difference between the product of -1 and -3 and the square root of 4
Answer:
3
Step-by-step explanation:
The expression is [tex]\sqrt{81} -(-1*-3*\sqrt{4})[/tex] Type the expression into a calculator.
A rocket ship travels at 2.0×104 miles per hour. If a satellite is 2.5×105 miles from Earth, how long will it take the rocket to make the trip from Earth to the satellite? (Hint: Divide the distance to the satellite by the speed.) Write your answer in scientific notation.
Answer:
20104 and 25105
Step-by-step explanation: