Answer:
-6
Step-by-step explanation:
1. Always do the parentheses first. solve 8-2 to get 6.
-(8-2) = -(6) = -6
1. simplify inside parentheses
a) 8 - 2 = 6
2. multiply by whatever is outside the parentheses
a) (-1)(6) = -6
Let me know if you need me to clarify on something!
combine the like terms to simplify the expression 3x-4+2x+8
Answer:
x +4
Step-by-step explanation:
3x-4+2x+8
Combine like terms
3x+2x -4+8
x +4
Answer:
5x + 4
Step-by-step explanation:
3x - 4 +2x * 8
Combine 3x and 2x
5x - 4 +8
Combine -4 and 8
5x + 4
Find the measure of the arc.
A
146°
E
mBC =[ ? ]
Answer:
124
Step-by-step explanation:
we are given 146 right away.
That little square means a 90 degree angle
146 + 90 = 236
360 - 236 = 124
(360 degrees is the sum of a complete circle.)
The measure of the arc (ABC) is 270 degree.
What is an angle?In plane geometry, an angle is a shape made up of two rays or lines with the same terminal.
Angle can be used to measure any angular rotational motion since it cannot be measured in terms of length parameters like metres or inches. Instead, it is measured as an angle in terms of degrees or radians.
As we know that the angle of complete rotation is 360°.
So, ∠ADC + ∠ABC = 360
We know ∠ADC = 90°
Then, ∠ABC = 360° - 90°
∠ABC = 270°
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Factor X^4+3x^2y+9y^2
Its not factorable
(make sure you typed it up right)
a cube measuring 1 cm on each side, what is the volume, if the cube was dropped into 28ml of water. what would the new volume be?
Answer:
29 ml
Step-by-step explanation:
Vcube = 1cm×1cm×1cm = 1 cm³
1 cm³ = 1 ml
If this cube is dropped into a 28ml of water the new reading will be 29 ml.
hope this helped :)
what is the value of the expression 7-3
Answer:
7-3 = 4Step-by-step explanation:
a cylinder is a radius of 8cm and a volume of 800cm³ calculate it's height and total surface area
Answer:
3.98 cm, 602.18 cm²
Step-by-step explanation:
Given:
r= 8 cmV= 800 cm³To find:
h = ?S = ?Solution:
V = πr²hh = V/πr² = 800/(π8²) = 3.98 cmS = 2πr (r+h) = 16π(8+3.98) = 602.18 cm²Write 8.87 as a mixed number and as an improper fraction.
Do not try to simplify your answers.
Answer:
8 87/100 = 887/100
Step-by-step explanation:
"Eight and eighty-seven hundredths" is ...
8 87/100 = 887/100
Answer:
Step-by-step explanation:
Convert to a fraction by placing the decimal number over a power of
10
.
887
100
Find the arc length of the semicircle. Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter your answer as a decimal.
Answer:
[tex]3.14r[/tex] or [tex]\pi r[/tex]
Step-by-step explanation:
Given:
A semicircle.
To find:
Arc length of the semicircle = ?
Solution:
Formula for angle subtended by an arc on the center of circle is given as:
[tex]\theta = \dfrac{l}{r}[/tex]
where [tex]l[/tex] is the arc length and
[tex]r[/tex] is the radius of semicircle.
Angle of full circle is [tex]2\pi[/tex]
So, angle of semicircle = [tex]\pi[/tex]
Using the formula, we can see that:
[tex]l = \theta \times r[/tex]
[tex]\Rightarrow l = \pi \times r\\\\OR\\\Rightarrow l = 3.14r[/tex]
So, the answer is:
Arc Length of semicircle = [tex]3.14r[/tex] or [tex]\pi r[/tex]
Answer:
The answer is 15.7
Step-by-step explanation:
The tutor got it wrong this is the right one on khan academy
14. Given that ML.= 12 feet, how wide is the
garage?
A 12 ft
C 25 ft
B 24 ft
D 26 ft
In the diagram below, ZDAB and ZDAC are adjacent
angles.
Complete Question: In the diagram below, <DAB and <DAC are adjacent angles. If m<DAC = 25°, what is m<DAB in degrees? What is m<BAC in degrees?
Answer:
m<DAB = 80°
m<BAC = 105°
Step-by-step explanation:
Generate an equation that will help you find the value of x.
Since m<DAC = 25°, therefore, x - 20 = 25°
Use this equation to find x
x - 20 = 25
Add 20 to both sides of the equation
x - 20 + 20 = 25 + 20
x = 45
m<DAB = 2x - 10
Plug in the value of x
m<DAB = 2(45) - 10 = 90 - 10 = 80°
m<BAC = m<DAC + m<DAB
m<BAC = 25 + 80 = 105°
Marta has 1 cubic yard of sand to build a wall in the shape of a rectangular prisim that is 10 inches tall and 5 inches wide to the nearest foor what will be the length of the wall
Answer: 933.12 inches
Step-by-step explanation:
Givem that Marta has 1 cubic yard of sand to build a wall in the shape of a rectangular prisim that is 10 inches tall and 5 inches wide to the nearest foor
1 cubic yard = 46656 cubic inches
Volume = Length × width × height
Substitute all the parameters
46656 = 10 × 5 × height
46656 = 50 height
Height = 46656 / 50
Height = 933.12 inches
EASY— get marked brainliest!!!
Answer:
y≥1/2 x +1
Step-by-step explanation:
first the line in the graph is bold and not dotted
so the sign is either ≤ or≥
the shaded area is on the top , on this case it is greater than
the right answer is y≥1/2 x +1
how many 2/3 cups can go into 9 cups
Hello there! :D
Today we're gonna learn some math, whoopie!
Alright, so we want to know how many 2/3 cups can go into 9 cups!
Firstly, I want to turn 9 cups into a fraction with the denominator of 3.
Let me do it all fancy for you:
[tex]9=\frac{x}{3}[/tex]
We know we want the denominator to be three, now we just need to do the opposite action (multiplication) to the other side to find what "x" is!
[tex]9*3= \frac{x}{3}*3[/tex]
If you have trouble understanding that step, let me know!
[tex]x=27[/tex]
Enter that into the fraction and we have:
[tex]\frac{27}{3}[/tex]
Notice that 27 is not an even number!
Now, we can the numerator of 27/3s and divide it by the numerator of 2/3s.
[tex]27/2=13.5[/tex]
This is not a whole answer, but the question is asking how many 2/3 cups can go into nine cups. Half of a 2/3 cup does not equal a 2/3 cup, so the answer would be 13 cups.
I hope this helps you can you have a wonderful day,
Kai xx
The number of 2/3 cups that can go into 9 cups is [tex]13\frac{1}{2}[/tex]
Total number of cups = 9
The number of 2/3 cups we can get from 9 cups = x
To get the number of 2/3 cups in 9 cups, we will divide 9 by 2/3
Number of 2/3 cups in 9 cups = 9 ÷ 2/3
Number of cups in 9 cups = 9 x 3/2
x = 27/2
x = 13.5
The number of 2/3 cups that can go into 9 cups is [tex]13\frac{1}{2}[/tex]
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Many cereals are made with high moisture content so that the cereal can be formed into various shapes before it is dried. A cereal product containing 57% by mass is produced at the rate of 1000. kg/h. How much water must be evaporated per hour if the final product contains only 21% water
Answer:
278.482 kilograms of water must be evaporated each hour.
Step-by-step explanation:
Initial mass of cereal is equal to the product of cereal mass-to-mass ratio and total mass flow:
[tex]\dot m_{in,c} = r_{in,c}\cdot \dot m_{in}[/tex]
Where:
[tex]\dot m_{in,c}[/tex] - Inlet cereal mass flow, measured in kilograms per hour.
[tex]r_{in,c}[/tex] - Inlet cereal mass ration, dimensionless.
[tex]\dot m_{in}[/tex] - Cereal product mass flow, measured in kilograms per hour.
If [tex]r_{in,c} = 0.57[/tex] and [tex]\dot m_{in} = 1000\,\frac{kg}{h}[/tex], then:
[tex]\dot m_{in,c} = (0.57)\cdot \left(1000\,\frac{kg}{h} \right)[/tex]
[tex]\dot m_{in,c} = 570\,\frac{kg}{h}[/tex]
The initial mass flow of water is:
[tex]\dot m_{in,w} = \dot m_{in} - \dot m_{in, c}[/tex]
[tex]\dot m_{in,w} = 1000\,\frac{kg}{h}-570\,\frac{kg}{h}[/tex]
[tex]\dot m_{in,w} = 430\,\frac{kg}{h}[/tex]
Given that final total mass flow contains only 21 % water, the final water mass flow, measured in kilograms per hour, is:
[tex]\dot m_{out} = \frac{\dot m_{out, c}}{r_{out, c}}[/tex]
([tex]\dot m _{out, c} = 570\,\frac{kg}{h}[/tex], [tex]r_{out} = 0.79[/tex])
[tex]\dot m_{out} = \frac{570\,\frac{kg}{h} }{0.79}[/tex]
[tex]\dot m_{out} =721.518\,\frac{kg}{h}[/tex]
[tex]\dot m_{out,w} = \dot m_{out} - \dot m_{out, c}[/tex]
[tex]\dot m_{out,w} = 721.518\,\frac{kg}{h}-570\,\frac{kg}{h}[/tex]
[tex]\dot m_{out,w} = 151.518\,\frac{kg}{h}[/tex]
Finally, the amount of water that must be evaporated per hour is:
[tex]\dot m_{evap} = \dot m_{in,w}-\dot m_{out,w}[/tex]
[tex]\dot m_{evap} = 430\,\frac{kg}{h} - 151.518\,\frac{kg}{h}[/tex]
[tex]\dot m_{evap} = 278.482\,\frac{kg}{h}[/tex]
278.482 kilograms of water must be evaporated each hour.
write out five proper fraction and change them to decimal fractions
Answer:
proper fractions:
4/10=0.4(decimal form)
5/100=0.05(decimal form)
1000/10000=0.1(decimal form)
2/4=0.5(decimal form)
11/55=0.2(decimal form)
Step-by-step explanation:
-4x-y=24 can you guys please help me pretty please!?
Answer:
x=-y/4 +6
Step-by-step explanation:
First, y to each side.
-4x=y+24
Second, leave the x by itself by dividing both sides by - 4.
x=-y/4 +6
What would be the first step you would take in simplifying 6 - 3+ 5 x 2 ?
Answer:
Multiply ; (5 ×2)
Step-by-step explanation:
Further explanation
[tex]6-3+5\cdot \:2\\\\\mathrm{Follow\:the\:PEMDAS\:order\:of\:operations}\\\\\mathrm{Multiply\:and\:divide\:\left(left\:to\:right\right)}\:5\cdot \:2\::\quad 10\\=6-3+10\\\\\mathrm{Add\:and\:subtract\:\left(left\:to\:right\right)}\:6-3+10\:\\:\quad 13[/tex]
7 billion expressed in scientific notation
Simplify when it is possible. 10x² -y + x² =
Answer:
11x² - y
Step-by-step explanation:
Step 1: Write out expression
10x² - y + x²
Step 2: Combine like terms
11x² - y
That is simplest form.
Answer:
[tex]\huge \boxed{11x^2-y}[/tex]
Step-by-step explanation:
[tex]10x^2 -y + x^2[/tex]
Grouping like terms.
[tex](10x^2 + x^2)-y[/tex]
Combining like terms.
[tex](11x^2)-y[/tex]
The question is in the photo.
Answer:
Question 2 because the point up is -6 and to the right is 2
Step-by-step explanation:
Solve b – 3/16 =5/16
b= __
Answer: 0.5
Step-by-step explanation:
Add 3/16 to both sides to isolate the variable on one side. Then the equation should be x=8/16 which is 0.5.
Which statement describes function composition with respect to the commutative property?
O Given f(x) = x2 - 4 and g(x) = x-3, (fºg)(2) = -3 and (gºf)(2) = -3, so function composition is commutative.
O Given f(x) = 2x-5 and g(x) = 0.5x - 2.5, (fºg)(x) = x and (gof)(x) = x, so function composition is commutative
Given f(x) = x? and g(x)=xx. (fºg)(0) = 0 and (gºf)(0) = 0, so function composition is not commutative.
O Given f(x) = 4x and g(x) = x? (fog)(x) = 4x2 and (gºf)(x) = 16x?, so function composition is not commutative
Answer:
Given f(x) = 4x and g(x) = x², (f ∘ g)(x) = 4x² and (g ∘ f)(x) = 16x², so function composition is not commutative.
Step-by-step explanation:
Option D is correct, given f(x) = 4x and g(x) = x², (fog)(x) = 4x² and (gof)(x) = 16x², so function composition is not commutative.
What is a function?A relation is a function if it has only One y-value for each x-value.
Function composition is not commutative in general, meaning that (fog)(x) is not equal to (gof)(x) for all functions f and g.
Let f(x) = 4x and g(x) = x², for which function composition is not commutative.
If we compose f and g, we get:
(fog)(x) = f(g(x)) = f(x²) = 4x²
If we compose g and f, we get:
(gof)(x) = g(f(x)) = g(4x) = (4x)² = 16x²
Since (fog)(x) is not equal to (gof)(x) for all x, we can conclude that function composition is not commutative in this case.
Hence, f(x) = 4x and g(x) = x², (fog)(x) = 4x² and (gof)(x) = 16x², so function composition is not commutative, option D is correct.
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write 3 × 20 sec=t as a word problem
Answer:
If you had a three person relay race and you all took 20 seconds each, how long did your race last? hope this will help :)
2x + 9x2 + 4x + 4xy – 6x2
Simplified would be 4xy + 3x^2 + 6x
Answer:
4xy+3x²+6x
Step-by-step explanation:
-3(-7) I need this asap pls help me
[tex]\boxed{21}[/tex]
When you multiply a negative and a negative, it is going to be a positive number. In this case, we're multiplying -3 and -7, which is equal to 21. If you're not sure of the answer for multiplication problems like this, just use a calculator to check your work.
Hi there! Hopefully this helps!
-------------------------------------------------------------------------------------------------
Answer: [tex]\boxed{21}[/tex]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~When you multiply two negatives (-, -,), you are gonna get a positive(+)
[Like making a cross out of two lines].
[tex]-3(-7) = +3(+7)[/tex]
Since 3(7) normally equals 21, that would be the answer for this case.Plz help me on 1-5 I’m so confused !!
Hey! I can't help you but I know who can!
Okay! Ask her she is good and mean to me at the same time! (She deleted my answers that helped ppl) But her is her account go follow and Inbox her on Brainly ok?
Her Username is:
Gabriella8671
ASK HER FOR HELP PLEASE!
(Can you mark me the brainiest if this helps?)
Answer in the comments please
The International Business Club starts the school year with $250.50 in their account. They spend $35 each month on activities. The Future Agricultural Leaders Club starts with $300 and spends $45.25 each month. Which equation can be used to find m, the number of months it will take for both accounts to have the same amount of money? 250.5 + 35m = 300 + 45.25m 250.5 – 35m = 300 – 45.25m 250.5m – 35 = 300m – 45.25 250.5m + 35 = 300m + 45.25
Answer:
250.50 - 35m = 300 - 45.25m
Step-by-step explanation:
Whenever an equation asks for when it will take x (or m in this case) amount of things or time you should know that there will be 2 different equations that have to equal each other
The equation will be 250.50 - 35m = 300 - 45.25m
The 35m is being subtracted from 250.50 because they are losing money each time they spend. This also applies to 45.25m
Also 35m and 45.25m are variables because it says they spend that much money each month. They don't specify how many months, so we have to put a variable after it.
Answer:
b) 250.5 – 35m = 300 – 45.25m
Step-by-step explanation:
on edge 2020 || pls mark brainliest
2. The sum of two times a
number squared and four
Answer:
2·x²+4
Step-by-step explanation:
The sum is an answer to an addition problem and 2 times a number means to multiply by 2. That number is squared so you it's to the second power.
Answer:
2•n^2+4=sum
Step-by-step explanation:
If two times a
number squared and four = sum,
then 2 • n^2 + 4 = sum
WILL GIVE BRAINLIEST!!! which scatter plot illustrates a positive linear relationship?
Answer:
Hey there!
Scatter plot D illustrates a positive linear relationship.
Let me know if this helps :)
the ratio of adults to children attending a new exhibit at the museum was found to be 8:5 based on this ratio , if 390 people attended one day , how many would be children
Answer:
150 children
Step-by-step explanation:
Ratio of adults to children= 8:5
Let the number of adults be 8 units and
the number of children be 5 units.
Total number of people
= 8 +5
= 13 units
Since there are 390 people,
13 units ----- 390 people
1 unit ----- 390 ÷13= 30 people
Number of children= 5 units
5 units ----- 30 ×5= 150 people
Thus, there are 150 children.