Step-by-step explanation:
x+2y=4
x-2y=12
______ ( add both equation)
2x = 16
x= 16/2
x= 8
Hope it helps ya
The ratio of red marbles to blue marbles in a bag is 6:7. How many red marbles are there if there are 364 total marbles in the bag?
Answer:
162
Step-by-step explanation:
6x+7x=364 suppose
13x=364
X=364/13=27
then,
red marbles=6x
=6×27=162
Answer:
162
Step-by-step explanation:
Evaluate (2-5i)(p+q)(i) when p= 2 and q=5i
Answer:
it's 25qr 78 5×4 and then 12÷5= 2r28
PLEASE HELP IM STUCK ON THIS ONE
Answer:
1. 1/200
2. 15/2
3. 11/36
4. 8/5
Step-by-step explanation:
what is x/y+z=w to make x the subject of the formula
We can make x the subject of the equation by moving all the other terms to the opposite side of the equal sign while x is on the next.
x/y+z=w [multiply both sides by y+z]
x = w (y + z)
HELPPPPPPPPPPPPPPPPppp
What is the constant of proportionality of this sentence? Sarah bought 3 pounds of grapes for $2.25. Ban bought 4 pounds of grapes for $3.00.
Answer:
75
Step-by-step explanation:
Each pound costs 75¢ so by each pound it increases by 75¢
A number added to three is the same as twice the number. Find the number. Round your answer to the nearest integer, if necessary.
Step-by-step explanation:
let the number be x
x +3= 2x
collect the like terms
x-2x= -3
-x = -3
x=3
PLEASE MARK BRAINLIEST
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Answer: X = 20
Step-by-step explanation:
Answer: X = 20
Step-by-step explanation:
To get this
3 * 20 + 12 = 20
3*20=60
60+12=72
72
describe and find the slope of the line
solve the inequality. -1/3w ≤ -5
Answer:
[tex] \frac{ - 1}{3} w \leqslant - 5[/tex]
[tex]w \leqslant - 5 \div \frac{ - 1}{3} [/tex]
[tex]w \leqslant - 5 \times - 3[/tex]
[tex]w \leqslant 15[/tex]
help plz ill give u BRAINEST
Answer:
First option, relation 1 and relation 4
Step-by-step explanation:
Because they both cross one of the two axes once, which from what I remember, makes it a function.
Hope this makes sense, and please correct me if I'm wrong :)
I am cooking a recipe. It requires 7/2 of sugar. I only have a 1⁄4 cup to measure the sugar with. How many quarter cups would I need to measure the correct amount of
Answer:
14
Step-by-step explanation:
Convert [tex]\frac{7}{2}[/tex] to a fraction with a common denominator
[tex]\frac{7}{2} (\frac{2}{2} )=\frac{14}{4}[/tex]
You now divide the fractions to find the amount of correct measurements needed.
[tex]\frac{\frac{14}{4} }{\frac{1}{4} }[/tex] For dividing by a fraction it is the same a multiplying by its reciprocal.
This becomes [tex]\frac{14}{4} (\frac{4}{1} )=\frac{14}{4} (4)=14[/tex]
You will need 14 correct measurements.
(x^2 + 2x + 2)(x + 5) = 0
A biologist is developing two new strains of bacteria. Each sample of Type 1 bacteria produces four new viable bacteria, and each sample of Type II bacteria produces three new viable bacteria. Altogether, at least 240 new viable bacteria must be produced. At least 20, but not more than 60, of the original samples must by Type I. Not more than 70 of the original samples can be Type II. A sample of Type I costs $5 and a sample of Type II costs $7. How many samples of each bacteria should the biologist use to minimize the cost? What is the minimum cost?
The cost can be optimized by using a Linear Programming given the linear constraint system
To minimize the cost, the biologist should use 60 samples of Type I bacteria and 0 samples of Type II bacteriaReason:
Let X represent Type 1 bacteria, and let Y, represent Type II bacteria, we have;
The constraints are;
4·X + 3·Y ≥ 240
20 ≤ X ≤ 60
Y ≤ 70
P = 5·X + 7·Y
Solving the inequality gives;
4·X + 3·Y ≥ 240
[tex]Y \geq 80 - \dfrac{4}{3} \cdot X[/tex] (Equation for the inequality graphs)The boundary of the feasible region are;
(20, 70)
(20, 53.[tex]\overline 3[/tex])
(60, 0)
(60, 70)
The cost are ;
[tex]\begin{array}{|c|c|c|}X&Y&P= 5\times X + 7 \times Y\\20&70&590\\20&53.\overline 3&473.\overline 3\\60&0&300\\60&70&790\end{array}\right][/tex]
Therefore, the minimum cost of $300 is obtained by using 60 samples of Type I and 0 samples of Type IILearn more here:
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solve the inequality x/2-5>4
Answer:
x>18
Step-by-step explanation:
[tex]\frac{x}{2} -5>4\\\\\\\frac{x}{2} >9\\\\\\\\x>9(2)\\\\\\x>18[/tex]
Could someone please help answer this, please no spam, thank you, will give brainliest (homework help)!
Answer:
Step-by-step explanation:
edin has £300 in his saving account.
his bank offers him a fixed 5% simple interest rate per annum, for a period of 3 years.
how much interest will he have earned after 3 years?
Answer:
$45
Step-by-step explanation:
300/100 = $3 = 1%
$3 x 5 = $15 = 5%
$15 x 3 years = $45
and y represents the number of tiles), which figure number has 40 tiles in it?
For a tile pattern with the rule y = 6x+4 (where x represents the figure number
How do you know?
whats your zodiac sign 100 points first to answer gets brainliest
Answer:
I'm a Cancer lol.
Step-by-step explanation:
Answer:
My zodiac sign is Scorpius (Scorpion) since my birthday is on the 12th of November
Step-by-step explanation:
ab + Bbc, a=0. b = -6, and c = 5
Answer:
180
Step-by-step explanation:
0 x -6 + -6 x -6 x 5
0 + 180 = 180
Plz help ASAP <3
james draws a line that has an x-intercept of "-5" and y-intercept of 3 on a piece of graph paper. what is the equation of the line?
A) y= 5/3 x + 3
B) y=5/3 x - 5
C) y=3/5 x - 5
D) y= 3/5 x + 3
Answer:
the answer is D
Step-by-step explanation:
yeah-ya..... right?
The equation of line will be;
⇒ y = - 3/5x + 3
What is Equation of line?
The equation of line in point-slope form passing through the points
(x₁ , y₁) and (x₂, y₂) with slope m is defined as;
⇒ y - y₁ = m (x - x₁)
Where, m = (y₂ - y₁) / (x₂ - x₁)
Given that;
James draws a line that has an x-intercept of "-5" and y-intercept of 3 on a piece of graph paper.
Now,
Since, James draws a line that has an x-intercept of "-5" and y-intercept of 3 on a piece of graph paper.
Hence, The slope of the line = - 3/5
And, The y - intercept = 3
Thus, The equation of line will be;
⇒ y = - 3/5x + 3
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Which of the following represents the function graphed? F(x)=1/2 x f(x)=x f(x)= x+2
Help help me pleaseee and thanks
Answer:
10
Step-by-step explanation:
sqrt. 100 = 10
because base x height = area
base and height must be same length in a square
Which of the following best describes the slope of the line below?
O A. Zero
B. Negative
C. Positive
D Undefined
Answer:
B
Step-by-step explanation:
going down on the right
Answer:
B
Step-by-step explanation:
Aline with zero slope is a horizontal line parallel to the x- axis
A line with undefined slope is a vertical line parallel to the y- axis
A line sloping upwards from left to right has a positive slope
A line sloping downwards from left to right has a negative slope.
The line shown slopes downwards from left to right and has a negative slope
8 /13 convert the following rational number into decimal form
Answer: 0.615
Step-by-step explanation:
actually do the division.
you will need a calculator most of the time.
8/13 = 0.615
What is an equation of the line that passes through the point (-6,-1) and is perpendicular to the line 6x-y=7
Answer:
y=-1/6x-2
Step-by-step explanation:
Lets find the slope of the given line
6x-7=y,m=6
The slope of the perpendicular line would be=-1/6
Using the point-slope form y-y1=m(x-x1)
y--1=-1/6(x--6)
y+1=-1/6(x+6)
6y+6=-x-6
6y=-x-6-6
6y=-x-12
y=-1/6x-2
If a girl says she likes you but then throws a moldy apple at ur head then laughs abt it and then say she was messing does she really like ya
nooooooooo yuppp
lablots
2c–8°, 3c–14°, and c+15°
solve for c
Answer:
Simplifying
c + -2 = 3c + 14
Reorder the terms:
-2 + c = 3c + 14
Reorder the terms:
-2 + c = 14 + 3c
Solving
-2 + c = 14 + 3c
Solving for variable 'c'.
Move all terms containing c to the left, all other terms to the right.
Add '-3c' to each side of the equation.
-2 + c + -3c = 14 + 3c + -3c
Combine like terms: c + -3c = -2c
-2 + -2c = 14 + 3c + -3c
Combine like terms: 3c + -3c = 0
-2 + -2c = 14 + 0
-2 + -2c = 14
Add '2' to each side of the equation.
-2 + 2 + -2c = 14 + 2
Combine like terms: -2 + 2 = 0
0 + -2c = 14 + 2
-2c = 14 + 2
Combine like terms: 14 + 2 = 16
-2c = 16
Divide each side by '-2'.
c = -8
Simplifying
c = -8
Step-by-step explanation:
I NEED SOME HELP! Please? Lines a and b lie in the standard (x,y) coordinate plane. An equation for line a is y = 0.15x + 5000. The slope of line b is 0.2 greater than the slope of line a. What is the slope of line b?
0.35
0.05
0.015
3.0
500
In the standard (x,y) coordinate plane, which of the following lines are perpendicular to the line 2y = 3x + 1?
y = - 2/3x + 3
y = -3/2x - 1
y = 2/3x - 1
y = 3/2x + 2
y = 2/3x + 1
a. Just add 0.2 to 0.15 in equation a. y = mx + b shows that m is the slope. Answer would be 0.35.
b. 2y = 3x + 1
y = 3x/2 + 1/2
Perpendicular = negative reciprocal of original function's slope.
3/2 -> -2/3x.
Only the first one fulfills the equation, thus:
-2/3x + 3.
(1) The slope of line b is 0.35. The correct option is A.
(2) The equation perpendicular to the line y = - 2/3x + 3. The correct option is A.
What is an equation of the line?An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.
The general form of the equation of the line:-
y = mx + c
m = slope
c = y-intercept
Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )
(1) An equation for line a is y = 0.15x + 5000. The slope of line b is 0.2 greater than the slope of the line.
The slope of line b,
b = 0.2 + a
b = 0.2 + 0.15
b = 0.35
(2) The equation of the line perpendicular to the line 2y = 3x + 1 is calculated as:-
The slope of the line perpendicular to the other line is the opposite reciprocal. The equation will be,
y = -2/3x + 3
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What is the value of 32.5 ÷ 4.5 × − 4.5 , written as a decimal?
giving brainly
Answer:
-32.5 hope this helps:)
A certain substance in an experiment was being stored at −1.7°F. It was then placed on a table where the temperature was raised by 3.1F
What was the new temperature of the substance?
the answers are
-4.8F
-1.4F
1.4F
4.8F
1.4F. When you add 3.1 to -1.7 you get 14F
Answer:
The answer is 1.4.
Step-by-step explanation: