Expand and simplify 2(5x + 3) - 2(2x - 3)
Answer:
6x+12
Step-by-step explanation:
2(5x+3)-2(2x-3)
(10x+6)-(4x-6)
10x+6-4x+6
6x+12
Step-by-step explanation:
1. 2(5x + 3) - 2(2x - 3)
10x + 6 - 2(2x - 3)
2. 10x + 6- 2(2x - 3)
3. 10x + 6 - 4x + 6
10x + 12 - 4x
4. 10x + 12 - 4x
6x + 12
Evaluate the expression 263 + 5 when b = 3.
263 +5 = 2(3): +5
=
Given:
The expression is:
[tex]2b^3+5[/tex]
To find:
The value of the given expression when [tex]b=3[/tex].
Solution:
We have,
[tex]2b^3+5[/tex]
Substituting [tex]b=3[/tex] in the above expression, we get
[tex]2b^3+5=2(3)^3+5[/tex]
[tex]2b^3+5=2(27)+5[/tex]
[tex]2b^3+5=54+5[/tex]
[tex]2b^3+5=59[/tex]
Therefore, the value of given expression at [tex]b=3[/tex] is 59.
Answer:
The answer is 59
Step-by-step explanation:
2b³ + 5, b = 3
2(3)³ + 5
2 × 27 + 5 = 59
Thus, The answer is 59
-TheUnknownScientist
<1 and <2 are complementary angles.the measure of <1 is 10
the Measure of <2 is 4c
Answer:
c = 20
Step-by-step explanation:
You have not really asked a question.
I will assume you are asking about the value of c.
The measure of angle 1 is 10 (assuming degrees!), so the measure of angle 2 is 80. (Complementary angles have measures that sum to 90.)
The measure of angle 2 is also described as 4c, so 4c = 80. That makes c = 20.
50 POINTS in how many ways can you select 3 books to bring on vacation from a group of 11 books
Answer:
165 ways
Step-by-step explanation:
Use a choose formula (! stands for factorial):
11!/(3! (11-3)!)
9*10*11/6
165
Bella is shopping for a 60" TV. She has found the following options that she likes. Bella wants to get the best deal on her TV. Which one should she buy?
TV #1 - $899 on sale for 30% off with no sales tax
TV #1 - $899 on sale for 30% off with no sales tax
TV #2 - $999 on sale 40% off with 5% sales tax
TV #2 - $999 on sale 40% off with 5% sales tax
TV #3 - $599 with no discount and 6% sales tax
TV #3 - $599 with no discount and 6% sales tax
TV #4 - $749 on sale for 20% off with 10% sales tax
TV #4 - $749 on sale for 20% off with 10% sales tax
Answer:
TV #3
Step-by-step explanation:
The others cost more.
X = 10
3.2 + 5y = 20
What is the solution (x, y) of the system of equations?
Tara is the costume manager for a large theater company she has 15 different hats, including 6 berets what’s is the probability that a randomly chosen hat from taras inventory will be a berets
Answer:
2/5
Step-by-step explanation:
probability it is a beret = total number of berets / total number of hats
6/15
To transform to the simplest form. divide both the numerator and the denominator by 3
2/5
Here is a list of ingredients to make biscuits.
200 g butter
180 g caster sugar
400 g plain flour
20g chocolate chips
Andrew only has 300 g of plain flour.
How much of the other ingredients should he use?
g butter
g caster sugar
g chocolate chips
Total marks: 3
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The boiling temperature (in degrees Celsius) of platinum is 199 more than four times the boiling temperature $z$ (in degrees Celsius) of zinc.
a. Write an expression that represents the boiling temperature (in degrees Celsius) of platinum.
b. The boiling temperature of zinc is 907 degrees Celsius. What is the boiling temperature of platinum?
Answer: THIS IS SO HARD!
Step-by-step explanation:
The required boiling temperature of platinum is 3,739 degrees Celsius.
What is simplification?Simplification involves applying rules of arithmetic and algebra to remove unnecessary terms, factors, or operations from an expression. The goal is to obtain an expression that is easier to work with, manipulate, or solve.
Here,
a. Let's start by defining a variable for the boiling temperature of zinc, which we'll call z.
According to the problem statement, the boiling temperature of platinum is 199 more than four times the boiling temperature of zinc. In other words,
Boiling temperature of platinum = 4z + 199
So the expression that represents the boiling temperature of platinum in degrees Celsius is:
4z+199
b. The problem tells us that the boiling temperature of zinc is 907 degrees Celsius. So we can substitute this value for z in our expression:
4z+199 = 4(907)+199 = 3,739
Therefore, the boiling temperature of platinum is 3,739 degrees Celsius.
Learn more about simplification here:
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What is the total of pens produced at the factory in a week when 21,000 blue pens are produced?
Answer:
B.A factory produces blue pens and black pens. Each week, 2/2=3
of the pens produced at
the factory are black.
Step-by-step explanation:
Answer:
D f f t f
Step-by-step explanation:
Tvtctctc
What are the solution(s) of -1/2X+4= X+ 1?
O-1 and 8
О 1 and 4
O 2
O 3
Answer:
X = 2
Step-by-step explanation:
-1/2X+4= X+ 1
Add 1/2X to each side
-1/2X+ 1/2 X+4= X+ 1 + 1/2 X
4 = 3/2 X +1
Subtract 1 from each side
4-1 = 3/2 X +1-1
3 = 3/2 X
Multiply each side by 2/3 to isolate x
3 * 2/3 = 3/2 X * 2/3
2 =X
Please help me bruvs, it's all greatly appreciated.
Answer:
D. (x+1)^1/3Step-by-step explanation:
f(x) = x³-1 is the same as y = x³-1
Replace x with y, and y with x =
x = y³ - 1
y³ = x + 1
y = ∛(x+1)
or y = (x+1)^1/3 (d)
_____________________
#IndonesianPride - kexcvi
Answer:
(x + 1)^1/3 (D)
Step-by-step explanation:
x = y^3 - 1
y^3 = x + 1
y = (x + 1)^1/3
Hope this help!
567 ÷ 12 with working out
Answer:
Step-by-step explanation:
567 ÷ 12
= 47.25
Answer:
47.25
Step-by-step explanation:
4. Which statement is true about both laws and theories?
a) Only laws have been tested while theories are an educated guess
b) Widely accepted by the majority of scientists within a given field of study
c) Do not change over time or when new evidence is found
d) A hypothesis can become a theory, then a theory can become a law
Answer: d)
Step-by-step explanation:
While a) is possible, theories are usually backed up by some evidence making it, in that case not just an educated guess. An hypothesis on the other hand is an educated guess.
b) is not specific to what it is talking to but if it's about laws, then yes it's right but theories are not always widely accepted. In fact it isn't likely that they would be accepted at all since it's not a fact or law.
c) is just wrong because theories can become law if enough evidence is found. Which is a change that can happen over time so that is just incorrect
d) is correct because enough evidence can make an hypothesis into a theory because it's backed by some evidence(although it make have some holes in it) and if there is enough concrete evidence, a theory can become a law
I hope this helps you or anyone!
Please help! I need this to pass. If you are trying to get points please just chose a different question and don't mess with mine. I am in a state of trouble and I just need a helping hand.
Given:
Post office is located at P(1,5).
Market is located at Q(4,9).
To find:
Distance between the post office and the market.
Solution:
Distance between two points is:
[tex]D=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}[/tex]
The post office is located at P(1,5) and the market is located at Q(4,9). So, the distance between the post office and the market is:
[tex]PQ=\sqrt{(4-1)^2+(9-5)^2}[/tex]
[tex]PQ=\sqrt{(3)^2+(4)^2}[/tex]
[tex]PQ=\sqrt{9+16}[/tex]
[tex]PQ=\sqrt{25}[/tex]
[tex]PQ=5[/tex]
The axes show distance in miles.
Therefore, the distance between the post office and the market is 5 miles.
A baker has 15 cups of flour. He sets aside 4 cups of flour to use tomorrow, and uses the rest of the flour for a cookie recipe that calls for 1/2 cup of flour. How many batches of cookies can the baker make
Answer:
22 I think
Hope this helps
Please answer my question
Answer: C
Step-by-step explanation:
JL is a common tangent to circles M and K at point J. If angle MLK measures
619, what is the length of radius MJ? Round to the nearest hundredth. (Hint:
Show that triangles LMJ and LKJ are right triangles, and then use right triangle
trigonometry to solving for missing sides of the right triangles.) (10 points)
pls help
Answer:
MJ = 6.5
Step-by-step explanation:
Tangent lines to a circle are perpendicular to the radius.
tan 68° = JL/3
2.4751 = JL/3
JL = 7.4253
∠JLK = 90° - 68° = 22°
∠MLJ = 61° - 22° = 39°
sin 61° = MJ/7.4253
MJ = 7.4253(0.8746) = 6.5
The length of radius MJ is 5.99 units
How to calculate the radius MJ?Start by calculating the length JL using the following tangent ratio
tan(68°) = JL/3
Make JL the subject
JL = 3 * tan(68°)
Evaluate the product
JL = 7.4
From the figure, the measure of angle MLJ is:
∠MLJ = MLK - JLK
Where:
∠JLK = 90° - 68° = 22°
So, we have:
∠MLJ = 61 - 22
∠MLJ = 39
The radius MJ is then calculated using the following tangent ratio
tan(39) = MJ/JL
This gives
tan(39) = MJ/7.4
Make MJ the subject
MJ = 7.4 * tan(39)
Evaluate
MJ = 5.99
Hence, the length of radius MJ is 5.99 units
Read more about line of tangents at:
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hellohello, this needs to be turned in tomorrow so if you could help, i would really appreciate it. :]
Answer:
24 is the answer
hope this helps
have a good day :)
Step-by-step explanation:
what is the Surface area
Answer:
Step-by-step explanation:
y'all I'm crying...help
Answer:
Below in bold.
Step-by-step explanation:
C1 = 180 - C2
= 180 - (170-2x)
= 10 + 2x
So B3 = 10+2x (alternate angles).
and B2 = 90 - B3
= 90 - (10 + 2x)
= 80 - 2x.
What is the value of 3^4
Answer:
81
Step-by-step explanation:
3.3.3.3=81
I will mark Brainliest for first and correct answer. PLEASE NO LINKS
Mark checks the cost of pens at several stores to determine the best deal. Which choice gives the lowest cost per pen?
a) $7 for a pack of 5 pens
b) $15 for a pack of 10 pens
c) $18 for a pack of 15 pens
d) $48 for a pack of 30 pens
Please also explain how you got the answer even better the working
C
please mark brainiest
you would have to gather the amount of money of each pin pack for it for example $7 / 5 that will be $1 with 40 cents 15 / 10 = $1.50 18 / 15 equals 1.20 and 40 / 30 = 1.6 which the less amount of money would be c
EMERGENCY PLS HELP: Calculate the volume.
Answer:
[tex]525\pi[/tex]
Step-by-step explanation:
Volume of a cylinder is given by the function [tex]v=\pi r^{2}h[/tex]
where v is volume, r is radius and h is height.
In order to find the radius we just divide the diameter in half and get
[tex]\frac{10}{2} =5=r[/tex]
now we just plug the values in the formula
[tex]v=\pi r^{2}h\\=\pi (5^{2})(21)\\=\pi (25)(21)\\=525\pi[/tex]
Answer:
Volume of a cylinder: V = π (r^2) h
Step-by-step explanation:
First, find your radius and your height.
H = 21
D = 10
R = 1/2 d = 5
Then plug them into the equation: V = π (r^2) h
V = π (5^2) 21
V = π (25) 21
V = π (25 x 21)
V = π (525)
V = 525π
The triangles are similar. Find the area of the smaller one.
Answer:
B: 24cm squared
Step-by-step explanation:
For 12 to convert to 3, you divide by 4. So 96 divided by 4 is 24!
Sallys grandmother made 16 pints of jam. How many cups of jam did she make?
Answer:
32 cups
There are 2 cups in one pint. So, 16 times 2 = 32
Answer:
32 cups
Step-by-step explanation:
Find the volume of a pyramid with a square base, where the area of the base is 16\text{ m}^216 m
2
and the height of the pyramid is 25.4\text{ m}25.4 m. Round your answer to the nearest tenth of a cubic meter.
The volume of the pyramid with a square base is 135.5 cubic m if the base area is 16 cubic m and the height is 25.4 m.
What is a square pyramid?In geometry, it is defined as the shape having a square base with equal sides length and all the vertex of the square's joints at the top, which is perpendicular to the centre of the square.
We know the volume of the square pyramid V;
V = Bh/2
B is the base area, B = 16 square m
h is the height of the pyramid, h = 25.4 m
V = (16×25.4)/3
V = 135.46 ≈ 135.5 cubic m
Thus, the volume of the pyramid with a square base is 135.5 cubic m if the base area is 16 cubic m and the height is 25.4 m.
Learn more about the pyramid here:
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A train travels from Washington DC to new york(225 miles). The train departs at 4:55 PM and arrives in New York at 7:55 PM. What is the average speed of the train in miles per hour?
Answer:
The average speed is:
[tex]\var{v}=75\: miles/h[/tex]
Step-by-step explanation:
The average speed equation is given by:
[tex]\var{v}=\frac{\Delta x}{\Delta t}[/tex]
Were:
Δx is the displacement (225 miles)Δt is the change in time (3 hours)Then we have:
[tex]\var{v}=\frac{225}{3}[/tex]
[tex]\var{v}=75\: miles/h[/tex]
I hope it helps you!
Aubrey's water bottle holds 1.75 liters of water. today, she filled her water bottle four times. If she had 400 milliliters of water remaining in her water bottle at the end of the day, how many liters of water did she drink today?
Answer:
6.6L
Step-by-step explanation:
4x1.75=7L
7L=7000mL
7000-400=6600mL=6.6L
Write the log equation as an exponential equation. You do not need to solve for x.
log(x+2) (4x) = 3x + 2
Please answer ASAP
Answer:
Step-by-step explanation:
(2x) (4x)= 8x = 3x+2
i think but i dont know if this is an exponential equation