A certain drug is made from only 2 ingredients: compound A and compound B. There are 4 milliliters of compound A used for every 5 milliliters of compound B. If a chemist wants to make 666 milliliters of the drug, how many milliliters of compound B are needed?
Answer:
370 millimeters of compound B is needed for 666 millimeters of solution.
Step-by-step explanation:
Given that:
4 millimeters of compound A are used for every 5 millimeters of compound B.
The scientist wants to make 666 millimeters of solution.
Let,
x be the multiplier number of the compounds in the solution.
Then,
4x + 5x = 666
9x = 666
Dividing both sides by 9
[tex]\frac{9x}{9}=\frac{666}{9}\\x=74[/tex]
Millimeters of compound B = 5x = 5(74) = 370 millimeters
Hence,
370 millimeters of compound B is needed for 666 millimeters of solution.
what is the triangles congruence theorem could you use to prove the triangle ADE is congruent to Triangle CDE
A) side angle side triangle congruence
B) angle side angle triangle congruence
C) side side side triangle congruence
D) side side angle triangle congruences
Answer:
I belive its A
Step-by-step explanation:
because it cant be b c nor d
Answer:
B
Step-by-step explanation:
A and C are congruent and so is AE and CE and E has congruent angles AKA angle side angle
For example, Emily received a 67 on her first economics exam, which counts for 20% of her grade; an 84 on her second exam, which counts for 30% of her grade; and a 78 on her third exam, which counts for 50% of her grade. What is her weighted average in the class
Answer:
77.6
Step-by-step explanation:
Given the data:
Weighting :
First exam = 20% ; second exam = 30% ; third exam = 50%
Scores :
First exam = 67 ; second exam = 84 ; third exam = 78
Weighted Average :
Σ(Weight * Score)
Σ[(0.2 * 67) + (0.3 * 84) + (0.5 * 78)]
13.4 + 25.2 + 39
= 77.6
Based on the weights assigned to these grades, Emily's weighted average in the class would be 77.6 marks.
Emily's weighted average= ∑ (Percentage of grade x Score in exam)
Solving gives:
= (20% x 67) + ( 30 % x 84) + (50% x 78)
= 13.4 + 25.2 + 39
= 77.6
Emily's weighted average is 77.6 marks.
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Which of the following accurately shows the range of the function defined below?
a. [3, 00)
b. [2,00)
c. [3,6]
d. (-00,00)
(00 is infinite
Given:
A piecewise function
[tex]f(x)=\begin{cases}3 &,x<0 \\ x^2+2 &,0\leq x<2 \\ \dfrac{1}{2}x+5 &,x\geq 2 \end{cases}[/tex]
To find:
The range of the function.
Solution:
Range is the set of output values.
For [tex]x<0[/tex], the function is [tex]f(x)=3[/tex] ...(i)
For [tex]0\leq x<2[/tex], the function is [tex]f(x)=x^2+2[/tex].
[tex]0\leq x<2[/tex]
Squaring each side.
[tex]0^2\leq x^2<2^2[/tex]
Adding 2 on each side.
[tex]0+2\leq x^2+2<4+2[/tex]
[tex]2\leq f(x)<6[/tex] ...(ii)
For [tex]x\geq 2[/tex], the function is [tex]f(x)=\dfrac{1}{2}x+5[/tex].
[tex]x\geq 2[/tex]
Divide both sides by 2.
[tex]\dfrac{1}{2}x\geq 1[/tex]
Adding 5 on each side.
[tex]\dfrac{1}{2}x+5\geq 1+5[/tex]
[tex]f(x)\geq 6[/tex] ...(iii)
From (i), (ii) and (iii), it is clear that the values of f(x) lies in the interval [2,∞).
So, the range of the given function is [2,∞).
Therefore, the correct option is b.
correct answer is B
Life is a high way i wan to drive it all night long.
i GUIVEEREEEE BRAINLILSTTT
Answer:
The answer is 26cm
Step-by-step explanation:
what I did was that I divide 130/5 which gave me 26
Answer:
F: 52 cm
Step By Step Answer:
130 divided by 5 equals 26
26 times 2 equals 52
graph the solution on the number line |x-3| <5
Answer:
-2<x<8
see below for graph
Step-by-step explanation:
First, we need to solve the inequality.
Inequality: |x-3|<5
Split into two equations:
x-3<5
x-3>-5 (notice how the sign is flipped when we make the number negative)
let's start with x-3<5
add 3 to both sides
x<8
now
x-3>-5
add 3 to both sides
x>-2
The graph is below
the intersection is the solution.
Notice how I made the maroon line go to the right- which shows that it's greater than (for x>-2) and the silver line go to the left, which shows that it's less than (for x<8)
the equation is -2<x<8
Hope this helps!
Which Word names of the shape that looks like a rectangle
Answer:
The name of the shape that looks like a rectangle is a square
Sam and two friends put letters in envelopes on Monday.
The three of them take two hours to put 600 letters in envelopes.
On Tuesday Sam has three friends helping.
Working at the same rate, how many letters should the four of them be able to put in
envelopes in two hours?
Answer: 800 envelopes
Step-by-step explanation:
Sam and her friends are working at a rate of 100 letters in envelopes per hour per person. So, if there are 4 people helping including sam, you just have to multiply 400 by 2 hours, which will give you 800.
Which of the following statements are NOT true?
Answer:
3.the slope of AB is different than the slope of BC
Step-by-step explanation:
It's not true because both of the slopes of the lines are equal which is 2/3
Samantha is trying to determine the volume of a soda can for her science project which of the following statement describes as a mentor to calculate the correct volume of the soda can?
Answer:
it would be the 2nd option
Step-by-step explanation:
the volume of a soda can is like finding the volume of a cylinder. (The volume of a cylinder is (π r^2 x h) 3.14 times the radius squared, times the height.)
where is the point ( 0,-4) located on the coordinate plane
A. on the y-axis
B. in Quadrant 3
c. on the x-axis
d. in quadrant 4
Answer:
A
Step-by-step explanation:
If you plot the point on a cartesian plane you see it is on the y axis
Answer:
D
Step-by-step explanation:
a rancher in Colorado needs to build a square pen for the cattle this winter he figured he needs an area about 625 square yards what are the dimensions of his pen
Answer:
156.25
Step-by-step explanation:
So, we know that this is a square so we know that each side will equal the same.
So, all we need to do is divide 625 by 4. We will get 156.25.
Hope this helps!
12 5/6 -7 1/3
fractions reduceing
Answer: 5 1/2
Step-by-step explanation:
12 5/6 - 7 1/3
Find an equivalent fraction for 7 1/3
12 5/6 - 7 2/6
5 3/6
Simplify
5 1/2
12 5/6 - 7 1/3
12-7= 5 and
5/6-1/3= {lcm of 6 and 3}
5-2/6= 3/6
3/6 = 1/2
final answer = 5 1/2
Make x the subject of the formula w − y x = z
Answer:
hmm ..
just transfer the X at the right side and others on left side
Step-by-step explanation:
so you get
w-z = yx
so later
(w-z)/y = x
The required value of x for the equation w - yx = z is (w - z)/y.
What is an equation?An equation is a combination of different variables, in which two mathematical expressions are equal to each other.
The given equation is,
w - yx = z
Solve to determine the value of x,
Subtract w from both the sides,
w - yx - w = z - w
-yx = z - w
Multiply with -1 both the sides,
yx = w - z
⇒x = (w - z)/y
The value of x for the given equation is (w - z)/y.
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Time is 5.3 hours in rate is 35.0 mph what is the distance
Answer:
185.5 miles
Step-by-step explanation:
Use the formula d=rt
distance = rate x time
d = 35(5.03)
d = 185.5 miles
Answer:
185.5
Step-by-step explanation:
plz solve for brain thing.
surry. im new
Answer:
1. 1/4 because rectangle B takes up 1/2 of the space and the two triangles together take up 1/4.
2. 1/2, because it is twice as big as C, which takes up 1/4 of the space.
3. 1/8, because both A and D together take up 1/4 of the space, and they are both the same size
4. 1/3, because the triangles around it each take up 1/6 of the space
5. 1/6, because it is half as large as square J, which takes up 1/3 of the space
Step-by-step explanation:
(hope this helps!)
The answers to each part is mentioned below.
What is trapezoid? A trapezoid, also known as a trapezium, is a flat closed shape having 4 straight sides, with one pair of parallel sides. The parallel sides of a trapezium are known as the bases, and its non-parallel sides are called legs.
Given is a trapezoid as shown in the image.
[A] -
The fraction is given by the ratio of square area and the trapezoidal area as -
{A(Square)/A(Trapezoid)} = A(C)/A(X)
[B] -
The fraction is given by the ratio of rectangle area and the trapezoidal area as -
{A(Rectangle)/A(Trapezoid)} = A(R)/A(X)
[C] -
The fraction is given by the ratio of triangle area and the trapezoidal area as -
{A(Triangle)/A(Trapezoid)} = A(T)/A(X)
[D] -
Total area of the figure [Z] → A{Z} = 4 x (1/2) x a x a = 2a².
Area of a square [J] → A{J} = a²
The fraction is given by the ratio of square area and the area of the image -
{A(square)/A(Z)} = a²/3a² = 1/3
[E] -
The fraction is given by the ratio of a triangle area and the area of the image -
{A(triangle)/A(Z)} = {a²/2}/3a² = 1/6
Therefore, the answers to each part is mentioned above.
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Can someone help me
Answer: the third one
Step-by-step explanation:
WILL GIVE BEAINLIEST!!! Read the paragraph from a narrative. What is the purpose for using descriptive language in the paragraph? Entering the hallway, I inched by the hurling, squawking mass of kids. The sound was deafening as everyone reconnected from their summer apart. A million eyes on my back looked right through me. I was invisible. O It provides a picture of the hallway that reflects the character's mood. O It uses a simile to make the point that the hallway is crowded. O It offers sensory details that create a sense of anticipation. It shows how alone the character feels in the crowded hallway.
Answer:
d
Step-by-step explanation:
got itt right
Answer:
D
Step-by-step explanation:
Carly needed to study for 5/6 of an hour for 9 days. How many hours did she study?
Answer:
180 hours
Step-by-step explanation:
24 hrs in a day
5/6 of 24 is 20 and multiply it by 9 because there are 9 days
=180
Answer:
its 180 houe=rs i agree
Step-by-step explanation:
Which order pair is the solution of the system of equations shown?ITS DUE TONIGHT HELP
Y= -x + 5
Y= 5x - 6
A. (1/6, 29/6)
B. (1/4, 19/4)
C. (11/6, 19/6)
D. (11/4, 9/4)
Answer:
Step-by-step explanation:
-x + 5 = 5x - 6
-6x + 5 = -6
-6x = -11
6x = 11
x = 11/6
-11/6 + 30/6= 19/6
(11/6, 19/6)
answer is C
Dan makes several smoothies using 3 4/5 cups blueberries for every 2 2/3 cups of strawberries. Using these ratios, how many cups of blueberries will he need for 5 1/3 cups of strawberries?
Answer:7 3/5
Step-by-step explanation: 3 4/5 blueberries = 2 2/3 strawberries
? blueberries =5 1/3 strawberries
do 3 4/5 times 5 1/3 which gives you 20 4/15.Now divide 20 4/15 by 2 2/3 which gives you 7 72/120 and you can simplify to 7 3/5.
Hope it helps . :)
Answer:
I made this so you can give the other guy brainlyeist.
Step-by-step explanation:
The most confused that i have been
Answer:
(-5, -3)
Step-by-step explanation:
To graph the two equations, you can look at two things, the slope and the y-intercept.
The two equations are in slope-intercept form, y= mx + b. m is the slope and b is the y-intercept. The slope is rise/run and the y-intercept is where the line crosses the y-axis.
In the first equation, the slope is -1 and the y-intercept is -8. So, to graph you would start at (0, 8) and move up one unit and then left one unit to get the next point.
For the second equation, the slope is 2/5 and the y-intercept is -1. So, to graph you would do the same thing. Start at (0, -1) and then go up 2 units and right 5 units to get the next point.
I've attached a graph below if you need it.
-1/4 + -3/8
show your work
Answer:
1 3/4, or 1.75
Step-by-step explanation: -0.25 + - 1.5 = 1.75
What is the answer to this question?
Answer:
b 20.6
Step-by-step explanation:
What is the formula for slope?
Will give brainliest for first correct.
Answer:
To solve the problems in this lesson, students use the slope formula, which states that m = (y2 -- y1) / (x2 -- x1). The slope formula can be read as "slope equals the second y coordinate minus the first y-coordinate over the second x-coordinate minus the first x-coordinate".
Hope helps
What is the volume of the rectangular prism?
Answer:
V=whl
Step-by-step explanation:
Answer:63yd
Step-by-step explanation:
You have to count the first row of blocks which is 7 then side blocks which is 3
3x7 is 21
Then how many are in the top row going down which is 21x3 =63
In △LUV, UV¯¯¯¯¯¯¯¯=UL¯¯¯¯¯¯¯ and the measure of ∠U=42.6°. The measure of ∠L=(3x+y)°and the measure of ∠V=(4x−3y−0.8)°. Find the value of x.
21.2
18.8
40.4
32.1
Answer:
x = 34.06
Step-by-step explanation:
The sum of angles in the triangle LUV is 180 degrees
Given
∠L=(3x+y)°
∠U=42.6°
∠V=(4x−3y−0.8)°
Since ∠L+∠U + ∠V = 180 degrees
Substitute:
3x+y + 42.6 + 4x - 3y - 0.8 = 180
7x - 2y - 41.8 = 180
7x - 2y = 221.8 ... 1
Since UV = UL, hence the triangle is isosceles and <V = <L
3x+y = 4x-3y - 0.8
-x +4y = -0.8
x - 4y = 0.8 ....2
From 2: x = 0.8+4y
Substitute into 1:
7x - 2y = 221.8
7(0.8+4y) - 2y = 221.8
5.6 + 28y-2y = 221.8
26y = 221.8-5.6
26y = 216.2
y = 8.32
Get x
x = 0.8+4y
x = 0.8+4(8.32)
x = 0.8 + 33.26
x = 34.06
Note that it was assumed that <V = <l since the question is not clear
Darren is on a super efficient diet. He started with 210 pounds 2 months ago and he now weighs 150 pounds . Find his percent of decrease.
Answer:
29%
Step-by-step explanation:
210-150/210 = 60/210 or 6/21
Now we have to find the percent out of 100 so we have to find out 100/21 to see what we have to multiply by to get to 100 so we can do the same with the 2 (numerator) so 1000/21= 4 16/21
then we have to multiply the 6 by 4 16/21 which is about 29%
jessica can shoot 10 photos in 10 minutes how may photes can she take in 1 hour
Answer:
60 photos
Step-by-step explanation:
Answer:
60
Step-by-step explanation:
because there is 60 minutes in an hour so she ca take 60 pics in 1 hour.
Its 8th grade math please answer i wanna double check lOl
Answer:
Imma Go With A
Step-by-step explanation:
Hope I Helped :)
Have A Good Day
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