Answer:
21.80
Step-by-step explanation:
What amount of pure acid must be added to 600 mL of a 20% acid solution to produce a 75% acid solution?
Find the solution sets of given inequality
Answer fast pls
Answer:
x > 2
Step-by-step explanation:
2(x + 5) < 4 + 5x
expand brackets:
⇒ 2x + 10 < 4 + 5x
Subtract 2x from both sides:
⇒ 10 < 4 + 3x
Subtract 4 from both sides:
⇒ 6 < 3x
⇒ 3x > 6
Divide both sides by 3:
⇒ x > 2
Answer: x>2
Step-by-step explanation: Check the steps in these attached images your welcome.
Simplify the expression
If a polynomial has one root in the form a-V6, it has a second root in the
form of a _Vb.
Answer:
radical form, they occur as two conjugates.
That is,
The conjugate of (a + √b) is (a - √b) and vice versa.
To show that the given conjugates come from a polynomial, we should create the polynomial from the given factors.
A store discounts a $75 sweater for 25% off. How much did you pay?
Answer:
$56.25
Step-by-step explanation:
25% of Original Price = 25% of $75 = 0.25*75 = 18.75
The discount is $18.75. This is amount you save.
Final Price = (Original Price) - (Discount)
Final Price = (75) - (18.75)
Final Price = 56.25
Answer:
I caulatuated it and it came down to pay of need is $56.25
Factor by grouping.
6dy + 4d + 27y + 18
Answer:
(3y+2) (2d+9)
Step-by-step explanation:
Group and factor out the greatest common factor then combine.
Please answer fast! 15 points for the answer
Answer:
1. C
2. A
3. B
Step-by-step explanation:
hope it helps you!
Answer:
20 and 20 = vertical angles
20 and 70 = complimentary angles
20 and 160 = supplementary angles
Step-by-step explanation:
vertical angles are the same measure, complimentary angles add up to 90, and supplementary angles add up to 180
HELP ME FOR 30 P!!!!!!
Answer:D
Step-by-step explanation: x-coordinate is same ( from picture), but height is different(y)
Answer:
OPTION D.
Step-by-step explanation:
Given:-
An image of house in the graph.
To find which option is correct.
So here we can notice that the roof top and the right side of the door is on a same straight line.
And it lies in the first co-ordinate.
So in the first coordinate in a straight line the value of x is always the same and only the value of y increase or decrease.
So here the correct option is OPTION D.
6,12,15,60,65, ?
What is the next number?
Answer:
390
Step-by-step explanation:
The given sequence has no common difference or ratio, so finding the rule that describes it is mainly accomplished by trial and error.
__
We notice that the ratio of the first two numbers is 2, the difference of the second pair is 3, the ratio of the third pair is 4, the difference of the next pair is 5.
This suggests that we are alternating addition and multiplication, and that the values involved increase by 1 each time.
Addition of 5 was used last, so we expect the next number to be found by multiplying by 6.
65 × 6 = 390 . . . . . the next number
PLEASE HELP ME WITH THIS!!!
Answer:
Step-by-step explanation:
ABCD is a rectangle
Base = 4 - (-5) = 9
Height = 4 - (-6) = 10
Area = 9 * 10 = 90 ft²
1. 100 kilometers at 20 km/h?
2. 180 kilometers at 45 km/h?
Nonsense will be reported!!
Plss help me on this!! I Have Already get the answer but my friend said rwong!!
Answer:
1. 5 hours
2. 4 hours
Reason:
Formula for speed is speed = [tex]\frac{distance}{time}[/tex] , if you want to find time, then take distance / speed, which will equal to 100 / 20 = 5 hours, and the same with 2.
[tex]\\ \rm\hookrightarrow Speed=\dfrac{Distance}{Time}[/tex]
[tex]\\ \rm\hookrightarrow Time=\dfrac{Distance}{Speed}[/tex]
So
#1
[tex]\\ \rm\hookrightarrow Time=\dfrac{100}{20}=5h[/tex]
#2
[tex]\\ \rm\hookrightarrow Time=\dfrac{180}{45}=4h[/tex]
HELP ME OUT PLS!!!
What is the measure of Angle z in this figure?
A) 124°
B) 90°
C) 180°
D) 56°
When y is inversely proportional to x. When y = 80 x= 3 find out x when y = 24
Answer:
x = 1
Step-by-step explanation:
The standard equation for a inversely proportional relation is:
y = k/x
We can use the given (x, y) point, (3, 80), to find the value of k.
y = k/x
80 = k/3
k = 80 × 3
k = 240
Now we can write the equation using the value we found for k.
The inversely proportional relation is:
y = 240/x
We now let y = 24 and solve for x.
y = 24/x
24 = 24/x
24x = 24
x = 1
Answer: x = 1
What is the value of x in the figure? Round the answer to the nearest tenth if necessary.
A
5
B
5.6
C
11.43
D
12
Check the picture below.
HELP ME OUT PLS!!!!
What is the measure of Angle y in this figure?
A) 163°
B) 27°
C) 37°
D) 180°
Answer:
the answer is A
Step-by-step explanation:
angle y=163 and angle x= angle z
Show your work when turning 2 1/8 as an improper fraction.
Answer:
17/8
Step-by-step explanation:
2⅛ as an improper fraction.
2 x 8 = 16
16 + numerator (1) =17.
17/8 is 2⅛ as an improper fraction
Solution:
To convert the fraction into improper fraction, multiply the whole number with the denominator and add the numerator to the product. The denominator will remain the same.
2 1/8=> {(2 x 8) + 1}/8=> {16 + 1}/8=> 17/82 1/8 in improper fraction is 17/8.
5(x+20)= 7x+307x+30 solve for x
Answer:
hope it will help you
pls help me
For each set of three measures, determine if they can be angle measures of a triangle.
Angles Can be angle measures of a triangle Cannot be angle measures of a triangle
Step-by-step explanation:
no
yes
no
no
the sum of all angles must be 180°
Two similar solids have a scale factor or 6:7.
What is ratio of their volumes, expressed in lowest terms?
Answer:
ratio's of their volume is 216 : 343
Explanation:
Let volume of one solid be x, another be y
given scale factor = 6 : 7
volume of solid = a³
solve:
[tex]\sf \frac{x}{y} = (\frac{6}{7} )^3}[/tex]
[tex]\sf \frac{x}{y} = \frac{216}{343} }[/tex]
║ Therefore volume of one solid is 216 and another 343 ║
In ratio form:
216 : 343
Answer:
Ratio's is 216 : 343
Step-by-step explanation:
Volume of one solid is x, and the other is y
Scale factor = 6 : 7
Volume of solid = a³
Solve:
[tex]\frac{x}{y}=(\frac{6}{7})^{3}[/tex]
[tex]\frac{x}{y}=\frac{216}{343}[/tex]
Hence, the volume of one solid is 216 and the other is 343
As a Ratio:
216 : 343
Help math math math ASAP ASAP
Answer:
14
Step-by-step explanation:
What is the area, in square feet, of the shape below? Express your answer as a fraction in simplest form.
Answer:
1/20
Step-by-step explanation:
marked down from 16.50 per kg to 12 per kg. What percentage reduction is this?
Answer:
-27.27 %
Step-by-step explanation:
((y2 - y1) / y1)*100 = your percentage change
(where y1=start value and y2=end value)
((12 - 16.5) / 16.5) * 100 = -27.27 %
27.3%
Find the different:
16.50-12=4.5
Find the percentage reduction:
4.5/16.50×100
=27.27272727
=27.3%(3 sig.fig)
write the equation of the graph
Answer:
y = x -3
Step-by-step explanation:
From the graph we see the line goes from point (0, -3) to point ( 3, 0), so we can find the slope as m= rise ( go up 3) / run ( go to the right 3) = 3/ 3 = 1
From the graph we can also see the y-intercept ( where the line intersects the y axis is at b = -3
The general equation of the line is y= mx+ b
Our line's equation is y = x -3, because m=1 and b= -3
Suppose that 4% of a population has a virus. You test 1064 people. You wish to find the probability that 45 of the people in the sample have the virus. Use the Poisson distribution and the formula μ=np from the Binomial distribution to approximate this probability.
Sarah and Nathan each picked a bucket of strawberries. Sarah picked 4 1/4 pounds, and Nathan picked 3 3/4 pounds. How much more did Sarah pick than Nathan?
Answer:
Step-by-step explanation:
Sarha picker 1/2 more thank Nathen because
813 divided by 4 and find remainder
Answer:
203.25 (1 = remainder)
Step-by-step explanation:
Item 2
The table gives estimated annual salaries associated with two different careers.
Career Restaurant server Nurse
Estimated annual salary $26,710 $41,980
Based on the table, how much more money would a nurse earn earn than a restaurant server over a 20 year career?
$15,270
$68,690
$137,380
$305,400
help please I need 5 points total. i need 2 to left of vertex. i need vertex. i need 2 to right of vertex. Please, quickly, I am timed
graph only goes up to 14. thank you
We are given with a quadratic equation which represents a Parabola , we need to find the vertex of the parabola , But let's recall that , For any quadratic equation of the form ax² + bx + c = 0 , the vertex of the parabola is given by ;
[tex]{\quad \qquad \boxed{\bf{Vertex = \left(\dfrac{-b}{2a},\dfrac{-D}{4a}\right)}}}[/tex]
Where , D = b² - 4ac (Discriminant)
Now , On comparing the given equation with ax² + bx + c , we have
⇢⇢⇢ a = 1 , b = - 10 , c = 27
Now , Calculating D ;
[tex]{:\implies \quad \sf D=(-10)^{2}-4\times 1\times 27}[/tex]
[tex]{:\implies \quad \sf D=100-108}[/tex]
[tex]{:\implies \quad \bf \therefore \quad D=-8}[/tex]
Now , Calculating the vertex ;
[tex]{:\implies \quad \sf Vertex =\bigg\{\dfrac{-(-10)}{2\times 1},\dfrac{-(-8)}{4\times 1}\bigg\}}[/tex]
[tex]{:\implies \quad \sf Vertex = \left(\dfrac{10}{2},\dfrac{8}{2}\right)}[/tex]
[tex]{:\implies \quad \bf \therefore \quad Vertex = (5,2)}[/tex]
Hence , The vertex of the parabola is at (5,2)
Note :- As the Discriminant < 0 . So , the equation will have imaginary roots .
Refer to the attachment for the graph as well .
Find the surface area of each prism in square units of B
Can someone pls explain how to hind triangle because I don’t understand TvT
Answer:
For B.) Estimate how many inches in a triangle, the edges for B.) Estimate it to around 5 or 4 ok and you times the other 4, start from bottom to end. so 4x4x3x3= 144
4x4=16
3x3=9
16x9=144
Step-by-step explanation:
Complete the definition of the piecewise defined
function by identifying the domain of each piece.
y
-X,
f(x) = -1
[(x - 3)2 -1.
xca
a sx
2
x
Q
b=
-2
2
DONE
-2
» Intro
Complete the definition of the price wise defined function by identifying the domain of each piece.
Answer: a=1 b=3
Step-by-step explanation: the x for each of the points are 1 and 3
A domain is the range of the assigned value (x), the domain of this piecewise-defined function are: a= 1 and b= 3
Based on the graph of the piecewise-defined function, we can deduce the following points;
When x < 1, we have:
f(x) = -x.
When 1 ≤ x < 3, we have:
f(x) = -1.
When x ≥ 3, we have:
f(x) = (x - 3)² - 1.
Since a domain is the range of the assigned value (x), we have:
a = 1.
b = 3.
Read more on piecewise-defined function here: brainly.com/question/15476150
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Meena mowed 9 lawns in 18 hours. What was her rate of mowing in lawns per hour?
Answer:
2
Step-by-step explanation:
Because
2 hours=1 lawn
4 hours=2 lawns
6 hours=3 lawns
8 hours=4 lawns
10 hours=5 lawns
12 hours=6 lawns
14 hours=7 lawns
16 hours=8 lawns
18 hours=9 lawns
Another way to think of it is 18 hours by 9 lawns=2 so each 2 hours the lawns should be half like how 12 hours is 6 lawns or how 16 hour is 8 lawns.
Hope this helps have a great afternoon:)
The rate of mowing the lawn by Meena is 2 units per hour, at this rate she will mown 9 lawns in 18 hours.
Given, that Meena mowed 9 lawns in 18 hours.
The breakup of lawn mowing by Meena can be described as below.
She mowed 9 lawns in 18 hours.
So, the breakup :
2 hours = 1 lawn
4 hours = 2 lawns
6 hours = 3 lawns
8 hours = 4 lawns
10 hours = 5 lawns
12 hours = 6 lawns
14 hours = 7 lawns
16 hours = 8 lawns
18 hours = 9 lawns
In this way she mowed 9 lawns in 18 hours with a rate of 2 lawns per hour.
Know more about per unit rate system,
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