Answer:
x is mL of 25% acid and y is mL of 50% acid
We set up 2 equations:
A) x + y = 250
B) .25 x + .50y = .35 * 250 which equals
B) .25x + .50y = 87.50 Multiplying A) by -.5
A) -.5x -.5y = -125 adding the equations we get
-.25x = -37.50
x = 150 mL
y = 100 mL
Source: http://www.1728.org/mixture.htm
Step-by-step explanation:
Answer:
x is mL of 25% acid and y is mL of 50% acid
Step-by-step explanation:
10^8/10^4 Simplify the expression. Write your answer as a power.
This is an exponential expression with 10 as the base and 4 as the exponent.
=============================================
Explanation:
We're dividing 10^8 over 10^4. When dividing like this, we subtract the exponents (numerator minus denominator). The bases must be the same value and they stay at the same value for the final answer as well.
The new exponent is 8-4 = 4 which is how we arrive at the answer 10^4.
Side note: 10^4 = 10,000 = ten thousand
What does P’ in geometry. What does the ‘ mean when doing probability?
Answer:
I believe its proposition
Step-by-step explanation:
im almost 100% sure
A card is randomly selected from a standard deck of 52 cards.what is the probability that it is a 10 or a face card?
Answer:
In a deck of cards, there are 6 faced cards. So, the probability of drawing a faced card is 6 out of 52 cards. Thus, the probability of drawing a face card from a deck of cards is 6/52 = 3/26.
Step-by-step explanation:
Answer:
4/13
Step-by-step explanation:
There are 4 10 cards.
There are 12 face cards.
Probability of both:
4/52 + 12/52 = 16/52 = 4/13
What's wrong with camping in the Sahara Desert
Answer:
The northeastern winds dry out the air over the desert and drive hot winds toward the equator. These winds can reach exceptional speeds and cause severe dust storms that can drop local visibility to zero. So basically you won’t be able to do anything, you would be dieting of heat, and won’t be able to see, so that Is whats wrong with camping in the Dahara Desert.
What percent of 513 is 248
Answer:
48.34%
Step-by-step explanation:
Answer:
48%
Step-by-step explanation:
248/513 is .483430799, so rounded is 48%
more slope pls helpppppp
Explanation:
Recall that the general point-slope form is [tex]y - y_1 = m(x - x_1)[/tex] where m is the slope and [tex](x_1, y_1)[/tex] is the point the line goes through. We see that the 2 and the m match up, so m = 2 is the slope.
Side note: We can rewrite that given equation into y - (-5) = 2(x - (-1)) to see that the line goes through the point (-1, -5)
Answer:
C: 2
Step-by-step explanation:
y + 5 = 2x + 2 (distribute 2)
y = 2x -3 (subtract 5 from both sides)
2x means: slope times x
what is the mass of an object that has a volume of 34 cm^4 and a densityof 6 g/cm^3?
Answer:
Mass = density * volume
Mass = 6 g/cm^3 / 34 cm^3
Mass = 0.1764705882 grams
Step-by-step explanation:
Answer:
204 g
Step-by-step explanation:
*I thinks you have made a mistake with the unit of the volume*
Density = mass / volume
density = 6 g/cm³volume = 34 cm³Mass = volume * density
mass = 6 * 34
mass =204 g
Factor by grouping plss help
Answer:
(5 x + 7)(x^2 + 3)
someone please help!!
Answer:
x^2+9x+8
Step-by-step explanation:
Expand the following:
(x + 1) (x + 8)
(x + 1) (x + 8) = (x) (x) + (x) (8) + (1) (x) + (1) (8):
x x + 8 x + x + 8
x x = x^2:
x^2 + 8 x + x + 8
Grouping like terms, x^2 + 8 x + x + 8 = x^2 + (8 x + x) + 8:
x^2 + (8 x + x) + 8
8 x + x = 9 x:
Answer: |
| x^2 + 9 x + 8
what percent of 12 is 3.3?
Answer:
27.5%
Step-by-step explanation:
Hi!
To do this problem, we have to set up a percent proportion:
[tex]\frac{3.3\\}{x}[/tex] = [tex]\frac{12}{100}[/tex]
In this problem, the denominators are the percent values and the numerators are the numerical value.
x = [tex]\frac{3.3*100}{12}[/tex]
x = [tex]\frac{330}{12}[/tex]
x = 27.5%
Hope this helped.
3. Elizabeth is designing a ramp and a platform made of wood. Her sketch of the design
shows the dimensions of the ramp.
17 ft
Platform
Ramp
h
x ft
15 ft
17x15=255ft
255ft
Hope this helps
WILL GIVE BRAINLIEST IMMEDIATELY!!! EXPLANATION+CORRECT ANSWER FOR BRAINLIEST!!!
Consider the diagram below where mSelect all of the statements that are true.
Statements and the diagram are shown in the photos.
IF YOU PUT A RANDOM ANSWER OR A LINK I WILL REPORT YOU AND EMAIL BRAINLY.
Answer:
Angle EDF= 53
Step-by-step explanation:
Supplementary angle: Angle EDC and angle EDF
which means angle EDC+ Angle EDF=180
Angle EDC show in the graph 127 degree
Angle EDG= 180-127=53Degree
NEED HELP ASAP WILL MARK BRAINLIEST
The dimensions of a cube are tripled. Choose True or False for each statement.
True
B
False
А
A. The perimeter of each face is tripled.
True
B
False
A
B. The surface area of the cube is multiplied by 6.
True
A
C. The volume of the cube is multiplied by 27.
False
B
Answer:
A=TRUE B=FALSE C=FALSE
Step-by-step explanation:
for b and c you don't know the length so you don't know what to multiply them from
PLZ GIVE BRAINLY
What is the volume of this solid?
Answer:
175 in³
Step-by-step explanation:
First the area of the triangle:
S: ½a×b×SinC
½×7in×10in×Sin90°===> 35in²
and now the volume
35 in²×5 in=175 in³
diego is preparing a spreadsheet with his net worth. he accidentally deleted the value associated with his student loan. use the information in the table to determine how much diego has in his students loan
Answer:
are the best
Step-by-step explanation:
Answer:
Study hard
Step-by-step explanation:
step 1 : write
step 2 : knowledge
step 3: remember
and last but not least
STEP 4 : BE SMART
Divide 360 in the ratio 1:7
Answer: 45:315
Step-by-step explanation:
A spherical boulder is 20 feet in diameter and weight almost 8 tons.Find its volume.Use 3.14 for T round to the nearest whole number.
Answer:
4187 ft³
Step-by-step explanation:
[tex]\frac{4}{3}[/tex]πr³
π = 3.14
r = radius
the diameter is the straight line that passes through the centre of a circle and touches the two edges of the circle.
A radius is half of the diameter
diameter = 2r
Radius = 20 / 2 = 10 feet
(4/3) x 3.14 x 10³ = 4187 ft³
What is the value of cos^-1 (15/16) rounded to three decimals
.............................
dude I don’t even know anymore
Answer:
just use the line on the graph :D
Step-by-step explanation:
f(6) =2
the maximum is 7
hope this helps!
PLS HELP ME ASAP!! I WILL GIVE U BRAINLYEST!! NO LINKS!
Frankie worked at the gas station for four months. He earned $4,800.00 and
must pay a total of 12% in income taxes. What is his net pay if there are no
additional deductions?
A. 576.00
B.5,376.00
C.3,600.00
D.4,224.00
Answer:
A or B
Step-by-step explanation:
hello do know how sovle surface area
Answer:
if I know then I will tell
Find the product of (2a+b)^2
Answer:
(2a+b)^2
4a^2 + 4ab + b^2
product=4
Answer:
4a²+b²+4abStep-by-step explanation:(2a+b)²=(2a)²+(b)²+2×2a×b(a+b)²=a²+b²+2abanswer:- 4a²+b²+4abThe length of a rectangular garden is three feet less than twice its width.
Answer:
Width of the rectangle is 8 feet
Length of the rectangle is 13 feet
Step-by-step explanation:
Complete question -
The length of a rectangular garden is three feet less than twice its width. If the perimeter of the garden is 42 feet, what is its length?
Solution
Let the width of the rectangle be X feet
Length of the rectangle would be 2X -3 feet
Perimeter of the rectangle is 2 (length + breadth)
Substituting the given values, we get -
Perimeter = 2 (length + breadth)
[tex]42 = 2 [(2X-3) + X]\\42 = 4X - 6 + 2X\\48 = 6X\\X = 8[/tex]
Width of the rectangle is 8 feet
Length of the rectangle is [tex]2*8 -3 = 16-3 = 13[/tex] feet
Georgia adds two proper fractions and gets 8/7 as an answer
Work out
the two fractions.
Answer:
1/2 and 9/14
Step-by-step explanation:
Let the first fraction be 1/2
Let the second fraction be x
1/2 + x= 8/7
x= 8/7-1/3
= 16-7/14
= 9/14
Hence the two numbers are 1/2 and 9/14
PLEASE HELP AND EXPLAIN THIS
Answer:
y=mx+b
Step-by-step explanation:
m is your slope, b is the y intercept. Y axis=slope x+y intercept
What exponent is equivalent to 1/8?
Answer:
Since from the laws of exponents we have that x−n=1xn , it implies that we may write 18=8−1 . 18=123=2−3.
Step-by-step explanation:
The Venn diagram below provides examples of domestic and foreign-policy issues
+
Domestic Issues
Foreign Policy Issues
How high should taxes be?
?
How can peace in the
Middle East be achieved?
How can the number of
jobs in the U.S. economy
be increased?
How can the Ukraine be
protected from Russia?
Which issue completes the diagram?
How can the conflict in Syria be ended?
How can air pollution be reduced?
How can ISIS be removed from Syria and Iraq?
How can Iran be stopped from developing nuclear weapons?
Answer: the answer is D
Step-by-step explanation:
Answer:
How can air pollution be reduced
Step-by-step explanation:
Unless someone wants everyone to die sooner then this should be the main concern
Number 8 please help 10 points no links pleAse
seven people sit in a circle.How many ways can this be done if two people A and B sit together
Step-by-step explanation:
Suppose the persons are a, b, c, d, e, f and g.
Let us also assume that a and b always sit together.
Let us then put the remaining 5 persons in a circular arrangement. It can be done in (5–1)! = 4! = 24 ways. Now, the pair (a,b) can be placed between any two persons already placed in circular order. There are 5 such gaps. Finally the pair (a,b) can be placed in two ways viz. (a,b) and (b,a).
So, total number of ways a group of 7 persons can be seated around a circular table where 2 specified persons always sit together is 24 X 2 X 5 = 240
For which equations does the fraction 2/3 make the equation true? Choose all that apply A. 35x__=20 B. 26x__=18 1/3 C. 48x__32 D. 22x__14 2/3
Answer:
C. 48x = 32
Step-by-step explanation:
For which equations does the fraction 2/3 make the equation true? Choose all that apply
Solving
A. 35x =20
x = 20/35
x = 4/7
B. 26x=18
x = 18/26
x = 9/13
C. 48x = 32
x = 32/48
x = 2/3
D. 22x =14
x = 14/22
x = 7/11
The correct Option is Option C
