Answers
Answer:
circle=6
triangle=2
star=8
square=4
so the answer is 20
Step-by-step explanation:
Related Questions
A scientist needs to make 2 liters of saline solution (salt water), in which the salt level must be at 15% concentration (meaning 15% of the water is salt). Unfortunately, the scientist only has two types of saline solution in his possession. He has saline solution with a 10% concentration level and saline solution with a 35% concentration level.
Answers
Answer:
We need 1.6 liters of the 10 % concentration level and saline solution and 0.4 liters of the 35 % concentration level and saline solution.
Step-by-step explanation:
Let V₁ be the volume of the 10% concentration saline solution required and V₂ be the volume of 35% concentration saline solution required.
Since mass = concentration × volume, the total mass of the 10% and 35% volume saline solution equal the mass of the 2 liter 15% volume solution.
So, 0.1V₁ + 0.35V₂ = 2 × 0.15
0.1V₁ + 0.35V₂ = 0.3 (1)
Also, the total volume of the 15 % solution must equal 2 liters. So,
V₁ + V₂ = 2 (2)
V₁ = 2 - V₂ (3)
putting equation (3) into equation (1), we have
0.1(2 - V₂) + 0.35V₂ = 0.3
0.2 - 0.1V₂ + 0.35V₂ = 0.3
we now collect terms, so
- 0.1V₂ + 0.35V₂ = 0.3 - 0.2
0.25V₂ = 0.1
we now divide through by 0.25, so
V₂ = 0.1/0.25
V₂ = 0.4 liters
we now put V₂ into (3), we have,
V₁ = 2 - 0.4
V₁ = 1.6 liters
So, we need 1.6 liters of the 10 % concentration level and saline solution and 0.4 liters of the 35 % concentration level and saline solution.
2x+3x-20+90 combine like trems
Answers
Answer:
5x - 110 =
Step-by-step explanation:
2x + 3x = 5x
90 + 20 = 110
5x - 110
Barry makes $280 dollars for tutoring 20 hours. How much
does he make per hour? (Unit Rate)
Answers
Answer: 14
Step-by-step explanation:
Answer: 8,400
Step-by-step explanation:
It is given that f(x) = 2x2 - 12x + 10.
(i) Find the value of a, of b and of c for which f(x) = a(x + b)2 +c.
Answers
Answer:
a = 2, b = - 3, c = - 8
Step-by-step explanation:
Expand f(x) = a(x + b)² + c and compare coefficients of like terms, that is
a(x + b)² + c ← expand (x + b)² using FOIL
= a(x² + 2bx + b²) + c ← distribute parenthesis by a
= ax² + 2abx + ab² + c
Compare like terms with f(x) = 2x² - 12x + 10
Compare coefficients x² term
a = 2
Compare coefficients of x- term
2ab = - 12, substitute a = 2
2(2)b = - 12
4b = - 12 ( divide both sides by 4 )
b = - 3
Compare constant term
ab² + c = 10 , substitute a = 2, b = - 3
2(- 3)² + c = 10
18 + c = 10 ( subtract 18 from both sides )
c = - 8
Then a = 2, b = - 3, c = - 8
Simplify - 60(x^3-8)
Answers
The distribution of assembly times required to assemble a certain smartphone is approximately normal with
mean 46 minutes and standard deviation 0.6 minute. Of the following, which is closest to the percentage of
assembly times between 4 and 5 minutes?
Answers
Answer:
59%
Step-by-step explanation:
I assume you mean 4.6 minutes.
Calculate the z-scores.
z = (x − μ) / σ
z₁ = (4 − 4.6) / 0.6
z₁ = -1
z₂ = (5 − 4.6) / 0.6
z₂ = 0.67
Use a calculator or chart to find the probability.
P(-1 < Z < 0.67) = P(Z < 0.67) − P(Z < -1)
P(-1 < Z < 0.67) = 0.7486 − 0.1587
P(-1 < Z < 0.67) = 0.5899
The probability is approximately 59%.
Consider a sequence defined by the recursive rule f(1) = 15; f(n)=f(n - 1) - 6 for n 2. Choose True or
False for each statement.
The second term of the sequence is 8.
A
True
B
False
The third term of the sequence is 3.
True
A
B
False
The fourth term of the sequence is -3.
True
А
False
B
Answers
Answer:
The second term of the sequence is 8 False ⇒ B
The third term of the sequence is 3 True ⇒ A
The fourth term of the sequence is -3 True ⇒ A
Step-by-step explanation:
The form of the recursive rule is:
f(1) = first term; f(n) = f(n - 1) + d, where
f(1) is the first termf(n) is the nth termf(n - 1) is the term before the nth termd is the common difference∵ f(1) = 15, f(n) = f(n - 1) - 6 for n ≥ 2
∴ The first term = 15
∴ d = -6
let us find the 2nd, 3rd, and 4th terms
∵ n = 2
∴ f(2) = f(1) - 6
∵ f(1) = 15
∴ f(2) = 15 - 6 = 9
∴ The second term is 9
∴ The second term of the sequence is 8 False
∵ n = 3
∴ f(3) = f(2) - 6
∵ f(2) = 9
∴ f(3) = 9 - 6 = 3
∴ The third term is 3
∴ The third term of the sequence is 3 True
∵ n = 4
∴ f(4) = f(3) - 6
∵ f(3) = 3
∴ f(4) = 3 - 6 = -3
∴ The fourth term is -3
∴ The fourth term of the sequence is -3 True
Factor completely 9r^3-72r^2
Answers
Answer:
9r²(r - 8)
Step-by-step explanation:
Step 1: Write expression
9r³ - 72r²
Step 2: Factor out 9
9(r³ - 8r²)
Step 3: Factor out r²
9r²(r - 8)
what is the area of a square who’s sides are (x+1)
Answers
Answer:
the area of the square is x^2 +2x +1
Answer:
ffiydfd7didiyfkhfoyfiyydid
Step-by-step explanation:
ifofoyfkycohfhguflfoycoyciyiy
Jayden created a monthly budget based on his net income. If he earns $3,080 each month, how much money can he allocate to eating at restaurants?
Answers
Answer:
$180
Step-by-step explanation:
First, add up all the money already allocated in the categories.
1200+400+300+500+400+25+75=2900
Then, take 3080 subtracted by the total.
3080-2900=180
Don't forget to add the $ sign in the end
Answer:
180 plzmark me brailest
Step-by-step explanation:
options for the first one . A. f (x) =10 B. f (10) =x C. f(h) D. f(30)
options for the second one . A. f (20)=10 B. f(20)=7 C. f (20)=17 D. f (20)=7and 17
options for the third one. A. f (20)=10 B. f(20)=7 C. f (20)=17 D. f (20)=7and 17
Answers
Answer: 21) A 22) C 23) D
Step-by-step explanation:
21) option A
you are given the y-value which is f(x) and looking for the x-value → f(x) = 10
22) option C
the x-value when y = 10 is 5 and also 20.
This is written in function notation as: f(5) = 10 and f(20) = 10
23) option D
when y=20, x = 7 and x = 17
Which ones are functions and which ones are NOT functions?
Answers
Answer:
only a is a function because its the only one that doesn't have a repeating x value
I NEED THE ANSWER ASAP
Answers
Answer:
x = 2
Step-by-step explanation:
f(x) = 5x - 3
f(x) = 7
7 = 5x - 3
+3 + 3
10 = 5x
2 = x
9/10 divided by 3/5
please helppp
Answers
Answer:
=1.5
Step-by-step explanation:
PLSSS HELP WILL GIVE BRAINLY
Answers
Answer:
8x + 16
Step-by-step explanation:
because
What is the solution to (2 - 1)(4 - 2) + 9 ?
Answers
((1)(2))+9
(2)+9
11
Which number line represents the solutions to 1-2x1 = 4?
Answers
Answer:
see below
Step-by-step explanation:
|-2x| = 4
Absolute value equations have two solutions, one positive and one negative
-2x = 4 and -2x = -4
Divide each side by -2
-2x/-2 = 4/-2 -2x/-2 = -4/-2
x = -2 x = 2
Find the equation of a line with a slope of 1 and passing through (11;3)
Answers
Step-by-step explanation:
slope(m)=(Y-Y1)/X-X1
here,
M=1
(X1,Y1)=(11,3)
NOW,
m=(Y-Y1)/(X-X1)
1=(Y-3)/(X-11)
1×(X-11)=Y-3
X-11=Y-3
X-Y-11+3=0
X-Y-8=0
X-Y=0 is the required equation.
What is the value expression of 1 1/5 • 1 1/2
Answers
Answer: 1 7/10
Step-by-step explanation:
Answer:
1 [tex]\frac{1}{10}[/tex]
Step-by-step explanation:
Multiply the whole numbers first. 1 x 1 = 1
Then do the fractions. [tex]\frac{1}{5}[/tex] X [tex]\frac{1}{2}[/tex]. Multiply the two top numbers then multiply the two bottom numbers. 1 x 1 = 1 and 5 x 2 = 10 so this part equals [tex]\frac{1}{10}[/tex].
Putting it together you get 1 [tex]\frac{1}{10}[/tex].
I don’t know what the answer is
Answers
Answer:
the answer is B, [tex]\frac{3}{4}[/tex] foot.
Step-by-step explanation:
there are 3 in the [tex]\frac{1}{4}[/tex] section
Nine more than five times a number (x) is at least thirty-nine.
Answers
Answer:
x=6
Step-by-step explanation:
Determine which graph shows y as a function of x.
Answers
Answer: The second graph
Step-by-step explanation:
The second graph shows a function, while the other ones do not.
We want to determine which of the given graphs represents y as a function of x.
The correct options are the two linear relations. (second and third graphs).
Let's see how to get the answer.
A function is a relation that maps elements from one set (the domain, set of the x-values in this case) into elements of another set (the range, set of the y-values). Such that each element from the domain can be mapped into only one value of the range.
By that definition, and knowing that y is represented by the vertical axis, if for a given graph we draw a vertical line and it intersects the graph in two points, then we can conclude that the graph does not represent a function, because it has two different y-values for the same x-value.
By that criteria, we can discard the parabola and circle.
Then the two correct options are the horizontal line and the increasing linear equation (second and third graphs).
If you want to learn more, you can read:
https://brainly.com/question/22421166
How to write a line equation from two points. The question is included in the image below. ;) Please and thank you.
Edit: I thought 50 points was enough. Really though guys, it's easy and I just want some opinions for a project I'm doing.
Answers
Answer:
but ohie gbonyo onu, kwashia buulu buulu. wa yE ne nim tisEE abriwa bi, etomE lakpaa no sia. me nyE mi de fofuo nume ke.onye s)))
Step-by-step explanation:
the sentense above after every full stop is written in another language, identifu them
Answer:
y = -4x + 2Step-by-step explanation:
GivenPoints (2, -6) and (-1, 6)To findEquation of the line passing through the given pointsSolutionUsing slope-intercept form:
y = mx + b1. Finding the slope using slope formula:
m = (y2 - y1)/(x2 - x1) = (6 - (-6))/(-1 - 2) = 12/(-3) = -42. Finding y-intercept using the first point, x = 2, y = -6:
-6 = (-4)*(2) + b-6 = -8 + bb = -6 + 8b = 2So the equation is:
y = -4x + 2Plz help me
Thank you.
Answers
Answer:
A
Step-by-step explanation:
Answer:
1) A 2) 5
Step-by-step explanation:
5+2.75*5=18.75
One more stop would put her 50 cents over.
Gcf of 30x2,6x6,18x2
Answers
Answer:
60, 36, 36
Step-by-step explanation:
3/4x-4=5+x
Helppppp meeeeee
Answers
Answer:
x = -36
Step-by-step explanation:
3/4x-4=5+x
Subtract 3/4x from each side
3/4x - 3/4x-4=5+x -3/4x
3/4x - 3/4x-4=5+4/4x -3/4x
-4 = 5 + 1/4x
Subtract 5 from each side
-4-5 = 1/4x
-9 = 1/4x
Multiply each side by 4
4 * -9 =1/4x*4
-36 =x
Three toed sloths move slowly using as littile energy as Possible.They sleep,Eat,and evening give birth upside down.A baby sloth may cling to its mother for as much as 36Weeks after being born.A sloth usually Sleeps about 101 Hours per week.How much time is the sloth sleep?
Answers
Answer:
3636 hours
Step-by-step explanation:
The calculation of duration of baby sloth sleep is shown below:-
A three-toes sloth usually sleeps is
= 101 hours per week.
Number of week is
= 36
Since we need to compute the duration of baby sloth's sleep so we need to multiply the number of weeks with number of hours per week
Therefore,
The duration of baby sloth's sleep in 36 weeks
= 36 x 101
= 3636 hours
essica and her sister, Nicole, need money for lunch. Jessica receives $50 and buys lunches at the high school for $2.50 each and Nicole receives $40 and buy lunches at the elementary school for $1.50 each. How many lunches do they have to buy for the two girls to have the same amount of money in their account?
$50 - $1.50x = $40 - $2.50x
$50 - $1.50x = $40 - $2.50x
$50 - $2.50x = $40 - $1.50x
$50 - $2.50x = $40 - $1.50x
$50 + $1.50x = $40 + $2.50x
$50 + $1.50x = $40 + $2.50x
$50 + $2.50x = $40 + $1.50x
Answers
Answer: $50 - $2.50x = $40 - $1.50x
Step-by-step explanation:
Which number does not belong 100 , 42,35,50
Answers
Answer:
42
Step-by-step explanation:
lettme know if it is wrong, but i got 42 because all the other numbers are divisibul by 5, and 42 is not...
Answer:
42 and 35
Step-by-step explanation:
Ok, let's work this out. So we just have to figure out what numbers are divisible by 100.
Ok so 42, 84, 128. NOPE
35, 70, 105 NOPE
50, 100 YES.
I’m doing number lines and I just want to be sure.
Does 2/4 come after 2/3 on a number line?
Or does 3/3 come after 2/3?
<—————>
|. |. |
1/3 2/3. 3/3?
___
Answers
Answer:
2/4 comes to the left of 2/3. 3/3 is to the right of 2/3
Step-by-step explanation:
In a number line, it goes left to right (least to greatest)
