The density of a substance is 3.4 g cm-3. Its relative density relative to another substance is 2.0. what is the density of the second substance?
Answer: The density of the second substance = [tex]1.7\text{ g cm}^{-3}[/tex]
Step-by-step explanation:
[tex]\text{Relative density }=\dfrac{\text{Density of substance}}{\text{Density of reference}}[/tex]
Given: Density of a substance is [tex]3.4 \text{ g cm}^{-3}[/tex] .
Its relative density relation to another substance = 2.0
Substitute all values in the formula , we get
[tex]2=\dfrac{3.4}{\text{Density of reference}}\\\\\Rightarrow\ {\text{Density of reference}=\dfrac{3.4}{2}\\\\\Rightarrow\ {\text{Density of reference}=1.7 \text{ g cm}^{-3}[/tex]
Hence, the density of the second substance = [tex]1.7\text{ g cm}^{-3}[/tex]
2(3v−5)=2(v−11)−4
what is v?
Answer:
-4
Step-by-step explanation:
1. 6v-10=2v-22-4
2. 4v-10=-26
3. 4v=-16
4. v=-4
Question #6
What is 3/4 divided by 1/8 Explain or show your reasoning.
Answer: 6
Step-by-step explanation:
3/4 divided by 1/8 is the same as 3/4 multiplied by the reciprocal of 1/8( which is 8) therefore, 3/4 ×8=6
This can help you remember how to multiply fractions :Dividing fractions is easy as a pie, flip the second number and multiply, and don't forget to simplify, before its time to say goodbye.
Given the equation, y=2x+5 evaluate when x=2.
5
9
0
7
also no need to rush you can wait to answer as long as you want but i probely only have 1o or 20 mins before parents catch me on a site im not suppose to be on lol
Help me. I need help
Answer:
i cant read that
Step-by-step explanation:
what is the sum of all interior angles of a parallelogram
Choose the equation that represents the line passing through the point (−2, −3) with a slope of −6.
y = −6x − 15
y = −6x − 20
y = −6x + 15
y = −6x + 20
Please explain your answer and show your work
9514 1404 393
Answer:
A. 6b³
B. 6b +6
C. p = 0.0375(6b³ +b +1)
D. $115.54
Step-by-step explanation:
Given:
3 candles with dimensions b×b×b, b×b×2b, and b×b×3b
with wicks of lengths b+2, 2b+2, 3b+2
wick costs $0.005/cm; wax costs $0.03/cm³
selling price is material cost + 25%
Find:
A. an expression for total volume
B. an expression for total wick length
C. an expression for the purchase price of a set
D. purchase price for a set with base area 64 cm²
Solution:
A. The sum of the volumes of the three candles is ...
v = b³ +2b³ +3b³
v = 6b³
__
B. The sum of the wick lengths is ...
L = (b +2) +(2b +2) +(3b +2)
L = 6b +6
__
C. The selling price is 25% more than the cost of materials so is ...
p = (1.25)(0.03×6b³ +0.005×(6b +6)) = 0.225b³ +.0375b +.0375
p = 0.0375(6b³ +b +1)
__
D. The side of the base is the square root of the base area, so is ...
b = √(64 cm²) = 8 cm
Then the price of a set of candles is ...
p = 0.0375(6·8³ +8 +1) = 0.0375·3081 = 115.54
Purchase price for a candle set with a base area of 64 cm² is $115.54.
John and Ndiba each improved their yards by planting rose bushes and geraniums. They bought
their supplies from the same store. John spent $44 on 7 rose bushes and 5 geraniums. Ndiba
spent $112 on 14 rose bushes and 14 geraniums. Find the cost of one rose bush and the cost of
one geranium.
i wanna know too.... dis u get the answer
What is the value of z?
Answer:
z=70 degrees
Step-by-step explanation:
The angle is adjacent to the the angle that = 70 degrees.
Evaluate the following equation, when x=20:
x/5 + x – 10
Can anyone help me with this question? Thank you!
2x + 9 > 21
solve the inequality
Answer:
x>6
Step-by-step explanation:
2x + 9 > 21
2x > 21-9
2x>12 dividing by 2
x>12/2
x>6
hope this helps
Answer:
x > 6
X has to be smaller than 6
What is the domain of f(x)?
What is the domain of g(x)?
Step-by-step explanation:
Domain is the range of x-values for the function to be defined.
Domain of f(x) = [2,9]
Domain of g(x) = [2,9]
Solve: 12 + (-13) - 12 - 5
A: 14
B: -12
C: -18
D: 45
Answer:
-18
(i think this is right, sorry if i'm wrong)
Does Anyone Know This
Answer:
1 g-h
2 g^2-h
3 gh
4 g+h
5 h-g
6 g+h^2
Step-by-step explanation:
Solve this system of linear equations. Separate
the x- and y-values with a comma.
16x = 84 - 2y
14x = 72 - 2y
Answer:
6x = 84 - 2y
14x = 72 - 2y
Step-by-step explanation:
-x+4=x+6
Show full work
Answer:
x=-1
Step-by-step explanation:
Step 1: Subtract x from both sides.
−x+4−x=x+6−x
−2x+4=6
Step 2: Subtract 4 from both sides.
−2x+4−4=6−4
−2x=2
Step 3: Divide both sides by -2.
−2x/−2= 2/−2
x=−1
Hope this helped :)
the double of a number divided by 3 is less than 8
Answer:
-12
Step-by-step explanation:
× x 2 = 2x
2x/3= -8x3/2
x = -12
Lindsay Skyler and Valerie are sisters Lindsey is 8 years older than Skyler Skyler is 5 years older than Valley who is 16 years old how old is Lindsay
Answer:
valley is 16
skyler is 21
lindsay is 29
hope this helps!
Alyssa used a can of paint that was 5/6 full to touch paint her house. When she was done, the bucket was 11/30 full. What fraction of the can did she use?
Answer:
7 / 15
Step-by-step explanation:
Fraction before painting = 5/6
Fraction left after painting = 11/30
Fracrion used = difference of the fraction before painting and fraction left after painting
Fraction used = 5/6 - 11/30
Lowest common factor of 6 and 30 = 30
5/6 - 11/30 = (25 - 11) / 30 = 14/ 30
Fraction used = 14/30 = 7/15
The ratio of boys to girls in a choir is 3 to 7 there are 35 girls in the choir how many members are in the choir
Answer:
50
Step-by-step explanation:
35/7= 5
5*10=50
Answer:
50 people in the choir
Step-by-step explanation:
we can solve for x, assuming x is the value in which 1 is on the ratio. 7x=35, so the value of x would be 5. Next, we must multiply x by 3 since that is what the ratio states. If we do this, we will get 5*3, or 15. Therefore, there are 15 boys in the choir. Last, we have to add 15+35 to get the total number of people in the choir. There are 50 people in the choir.
Hope this helps! :)
(Also i know my explanation is rly bad just ignore it)
I need help solving
Answer:
well if you're looking for angles then
angle ADB = 30°
angle CBD = 80°
angle CDB = 120°
but they asked to classify triangle ADC ,whose measurements are 90° , 40° and 50° ...so of they're asking what type of triangle then it is a right angled triangle.
Answer:
Triangle ADC is a right triangle.
Step-by-step explanation:
Triangles Classification
An acute triangle is a triangle with three acute angles or with less than 90° each.
An obtuse triangle has one obtuse angle or more than 90°.
A right triangle has one right angle of 90°
From the figure, we can see angle D is marked as a right angle (90°), thus triangle ADC is a right triangle.
To complete the answer, triangle ADB is obtuse (has an angle of 100°), and triangle ABD is acute.
5 x 5^2 leaving answer in index notation
In multiplication, the exponents add up.
5.5²=5¹.5²=5³
Note:
In the extraction ,the exponents remove.
5¹⁰÷5³=5⁷
Answer:
5³
Step-by-step explanation:
Using the rule of exponents
[tex]a^{m}[/tex] × [tex]a^{n}[/tex] = [tex]a^{(m+n)}[/tex]
Given
5 × 5²
= [tex]5^{1}[/tex] × 5²
= [tex]5^{(1+2)}[/tex]
= 5³ ← in index form
= [ 125 ]
Clue: I am 0.02 units away from -3.8. Where am I?
Answer:
-3.82
Step-by-step explanation:
You are going up the line of negative numbers so you have to add o.o2 to 3.8 (3.80).
11. In the diagrams below the rows of green tiles are surrounded by white tiles
Find a formula for the number of white tiles which would be needed to
surround a row of n green tiles.
Hii please help!!! Show work
Step-by-step explanation:
There are 12 white tiles surrounding 3 green tiles, and 16 white tiles surrounding 5 green tiles.
Common difference = (16-12)/(5-3) = 2.
Hence number of white tiles = 2n + 6.
Nate made 8 loaves of bread on Monday and 10 more on Tuesday. He gave an equal number to each of his 9 neighbors. How many loaves of bread did each neighbor receive?
Answer:
2
Step-by-step explanation:
8 + 10 = 18
18/9 = 2
please help quickly ! giving brainliest !
Answer:
x < -7 or x > 2
Step-by-step explanation:
The solution includes the interval from negative infinity to -7, not including -7. That means
x < -7
The solution also includes the intervals from 2 to infinity, not including 2. That means
x > 2
Answer: x < -7 or x > 2
which could describe the graph of a nonproportional relationship
A- the Y - intercept is positive
B- the y-intercept is 0
C- the line intersects the origin
D- the y- intercept is negative
A local movie theater has an offer that for every seven movies you pay to go see, they will give you free passes for two other movies. If you paid to see 42 movies last year, how many free passes did you receive?
Answer:
i just need more points so sorry im not helping
Step-by-step explanation:
im just a blank bc it doesnt let me say it seventh grader
Answer: 12
Step-by-step explanation: 42/7 = 6 and u get 2 free passes so 6 x 2 = 12
