According to the system of equations above, what is
the value of x ?
Need someone to explain how to do it
Answers
Answer:
7
Step-by-step explanation:
try substituting
crossmultyply
x=-9-y
substituting
-9-y=-25+9
y=16
substituting
pick one of the equations
x+y=-9
x-16=-9
x=-9+16
x=7
Related Questions
What is the first step to solve for n
in the following equation?
3n - 7 = 30
Answers
Answer:
n = 37/3
n = 12 1/3
Step-by-step explanation:
Hi there !
3n - 7 = 30
3n = 30 + 7
3n = 37
n = 37/3
n = 12 1/3
Good luck !
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Answers
Answer:
OK lets do it
Step-by-step explanation:
Answer:
What?
Step-by-step explanation:
Given f(x) = 1/3(4-x),What is the value of f(16)?
Answers
Answer:
-1/4
Step-by-step explanation:
Step 1: Simplify both sides of the equation.
16f=−4
Step 2: Divide both sides by 16.
Graph the line that passes through the points (3,7) and (-9, -1) and determine
the equation of the line.
Answers
Answer:
y=2/3+5
Step-by-step explanation:
Answer:
y=2/3+5
Step-by-step explanation:
Write 1/4x-3/4y=-1 in standard form
work out
need asap
please
Answers
if 3 times a number added to 2 is divided by the number plus 9 the result is 5 halves. find the number
Answers
Answer:
2/7
Step-by-step explanation:
1, 2, 3, 5, 8, ____, ____, ____ Give the next three numbers in the pattern.
Answers
Answer: 10, 12, 14 are the next numbers
Explanation:
Find the quotient of 2 ÷ 3 8 .
Answers
Someone please help me on this one I don’t know if this is correct
Answers
Answer:
Can you type the choices please?
pretty sure this is right!
which expression forms an equation with the given expression? 8•7-4=
Answers
Answer:
the answer to this equation is 52
Step-by-step explanation:
Triangle FGH is graphed on the coordinate plane below.
On a coordinate plane, triangle F G H has points (negative 6, negative 8), (negative 2, negative 3), (negative 4, negative 2).
The figure is rotated 180° using the origin as the center of rotation. How do the coordinates of the vertices of the preimage compare to the coordinates of the vertices of the image?
(x, y) right-arrow (y, x)
(x, y) right-arrow (negative y, negative x)
(x, y) right-arrow (negative x, negative y)
(x, y) right-arrow (x, negative y)
Answers
Answer:
(x, y) right-arrow (negative x, negative y) ⇒ (x, y) → (-x, -y)
Step-by-step explanation:
Let us revise the rotation about the origin
If point (x, y) rotated about the origin by angle 90° counterclockwise (or 270° clockwise), then its image is (-y, x) . The rule is (x, y) → (-y, x)If point (x, y) rotated about the origin by angle 180° counterclockwise ( or 180° clockwise), then its image is (-x, -y) . The rule is (x, y) → (-x, -y)If point (x, y) rotated about the origin by angle 270° counterclockwise (90° clockwise), then its image is (y, -x) . The rule is (x, y) → (y, -x)Let us solve the question
∵ The vertices of triangle FGH are (-6, -8), (-2, -3), (-4, -2)
∵ The figure is rotated 180° using the origin as the center of rotation
→ By using the 2nd rule above
∴ The vertices of its image are (6, 8), (2, 3), (4, 2)
∴ The rule is (x, y) → (-x, -y)
The coordinates of the vertices of the preimage compare to the coordinates of the vertices of the image do (x, y) right-arrow (negative x, negative y) ⇒ (x, y) → (-x, -y)
Answer:
B. they over explaining
Step-by-step explanation:
X + 5 = 1
—
4. Step by step please help!!!
Answers
Answer: x=-8
Step-by-step explanation:
X+5=1-4
X+5=-3
Now subtract 5 from both sides
X=-8
X+5=1
-5. -5. ( subtract 5 from both sides)
_________
X = -4 ( 1-5=-4)
216 divided by 31
Please give me the answer AND the remainder. i DO NOT want the answer in deciamls
And show your work
Answers
Answer:
6 r 30
Step-by-step explanation:
Step 1:
Start by setting it up with the divisor 31 on the left side and the dividend 216 on the right side like this:
3 1 ⟌ 2 1 6
Step 2:
The divisor (31) goes into the first digit of the dividend (2), 0 time(s). Therefore, put 0 on top:
0
3 1 ⟌ 2 1 6
Step 3:
Multiply the divisor by the result in the previous step (31 x 0 = 0) and write that answer below the dividend.
0
3 1 ⟌ 2 1 6
0
Step 4:
Subtract the result in the previous step from the first digit of the dividend (2 - 0 = 2) and write the answer below.
0
3 1 ⟌ 2 1 6
- 0
2
Step 5:
Move down the 2nd digit of the dividend (1) like this:
0
3 1 ⟌ 2 1 6
- 0
2 1
Step 6:
The divisor (31) goes into the bottom number (21), 0 time(s). Therefore, put 0 on top:
0 0
3 1 ⟌ 2 1 6
- 0
2 1
Step 7:
Multiply the divisor by the result in the previous step (31 x 0 = 0) and write that answer at the bottom:
0 0
3 1 ⟌ 2 1 6
- 0
2 1
0
Step 8:
Subtract the result in the previous step from the number written above it. (21 - 0 = 21) and write the answer at the bottom.
0 0
3 1 ⟌ 2 1 6
- 0
2 1
- 0
2 1
Step 9:
Move down the last digit of the dividend (6) like this:
0 0
3 1 ⟌ 2 1 6
- 0
2 1
- 0
2 1 6
Step 10:
The divisor (31) goes into the bottom number (216), 6 time(s). Therefore put 6 on top:
0 0 6
3 1 ⟌ 2 1 6
- 0
2 1
- 0
2 1 6
Step 11:
Multiply the divisor by the result in the previous step (31 x 6 = 186) and write the answer at the bottom:
0 0 6
3 1 ⟌ 2 1 6
- 0
2 1
- 0
2 1 6
1 8 6
Step 12:
Subtract the result in the previous step from the number written above it. (216 - 186 = 30) and write the answer at the bottom.
0 0 6
3 1 ⟌ 2 1 6
- 0
2 1
- 0
2 1 6
- 1 8 6
3 0
You are done, because there are no more digits to move down from the dividend.
The answer is the top number and the remainder is the bottom number.
Therefore, the answer to 216 divided by 31 calculated using Long Division is:
6
30 Remainder
34 23.32
What is the simplified expression for
2.
?
24.3-13
32
32.
22
032
열
2
024
력
3
Answers
Step-by-step explanation:
the answer is 3/2
always remember when multiplying numbers of the same base the exponents will always be added and when dividing numbers of the same base the exponents will be minused.
There are 49 female performers in a dance recital. The ratio of men to women is 5:7. How many men are in the dance recital?
Answers
Answer:
35 Men were in the dance recital
Step-by-step explanation:
The ratio from MEN to WOMEN is 5:7
49 female performers is 7
49/7= 7 performers
to find how many men, you would do 7*5
7*5= 35
35 Men were in the dance recital
Hope this helps and made sense!
[48(72-12)-15] divided by 9
Answers
Answer:
318.33...
Step-by-step explanation:
[48(60)-15]/9
[2880-15]/9
2865/9
318.33
Answer:
Reduce the expression, if possible, by cancelling the common factors.
Exact Form:
955/3
Decimal Form:
318.¯3(repeating)
Mixed Number Form:
318 1/3
Hope this helps :)
is -9/3 a rational number
Answers
Answer:
no
Step-by-step explanation:
Answer: Yes
Step-by-step explanation: The rational numbers include all positive numbers, negative numbers, and zero that can be written as a ratio (fraction) of one number over another. Whole numbers, integers, fractions, terminating decimals, and repeating decimals are all rational numbers.
how can you get 6 with four 6s , the problem is
6 6 6 6 equals 6
Answers
Answer:
6666 divided by 1111 equals 6
Step-by-step explanation:
If f(2) = 22 – 5, then what is the value of f(2) + f(5)?
Answers
Answer:
67
Step-by-step explanation:
With the information of f(2) = 22-5, you can assume the equation will be f(x) = 11x-5. Using this, you can calculate f(5) by doing 11(5)-5, which is 50. 22-5 is 17, so 50+17=67
The longest leg of a right triangle is 30 feet and another side is 20 feet. Find the perimeter of the triangle. Round to the nearest tenth
Answers
Answer: 72.4 ft
Step-by-step explanation: A2+B2=C2 20squared plus Bsquared=30 22.4 squared plus 20squared equals 30squared and when you add all that together you get 72.4 ft
Which expression is equivalent to
Answers
Answer:
a
Step-by-step explanation:
What is the answer?
Answers
Hope this helps
2.1 ÷ 1.488 rounded to the nearest tenth, I will Give you 20 Points
Answers
If the number is above 5, you round to the next highest number.
If the number is 4 and below, you don’t round to the next highest number.
Since 1.41 has a number below 4 that you have to round, the nearest tenth would stay 4.
meaning the answer is 1.4
Chris wants to order DVDS over the internet. Each DVD costs $ 15.99 and shipping for the entire order is $ 9.99. How much will Chris spend (s) if he buys x DVDS?
Answers
Answer:
There are 3 DVD s that can be bought with under $100.
Step-by-step explanation:
Since we have given that
Cost of DVD = $15.99
Cost of Shipping = $ 9.99
Total cost per DVD would be
$15.99 + $9.99 = $ 25.98
Amount he has to spend no more than $ 100.
So, number of DVDs would be
100 ÷ 25.98 = 3.84
Hence, there are 3 DVD s that can be bought with under $100.
7-14m=2m=5 please help
Answers
Answer:
M=1/6
Step-by-step explanation:
(5x+6) over 2 = 3 (4x+12)
Answers
x= -66/19
Multiply 2 on both sides:
2*(5x+6)/2=3(4x+12)*2
Simplify:
5x+6=24x+72
Subtract 6 from both sides:
5x+6-6=24x+72-6
Simplify:
5x=24x+66
Subtract 24x from both sides:
5x-24x=24x+66-24x
Simplify:
-19x=66
Divide both sides by -19
-19x/-19=66/-19
Simplify:
x= -66/19
Akiko wants to fence in her [tex]12[/tex] ft by [tex]10[/tex] ft vegetable garden. There will be a path [tex]x[/tex] ft wide between the garden and the fence. The area to be enclosed by the fence will be [tex]360[/tex] sq ft. Write a quadratic function that can be used to determine the value of [tex]x[/tex].
Answers
Answer:
see below
Step-by-step explanation:
The length is 12 + 2x and the width is 10 + 2x
A = l*w
360 = ( 12+2x) ( 10+2x)
FOIL
360 = 120 + 24x+20x + 4x^2
Combine like terms
360 = 4x^2 +44x+120
Subtract 360 from each side
0 = 4x^2 +44x +120-360
0 = 4x^2+ 44x -240
For fun, lets solve
0 = 4( x^2 + 11x - 60)
0 = 4( x+15) ( x-4)
Using the zero product property
x= -15 x=4
Since we cannot have negative length
x=4 ft
Answer:
[tex]x^2+11x-60=0[/tex]
Step-by-step explanation:
Refer to the drawing.
We know that the area enclosed by the fence is 360 square feet. Remember that the area for a rectangle is given by the following formula:
[tex]A=bh[/tex]
So, let's substitute 360 for A, (12+2x) for b, and (10+2x) for h. This yields:
[tex]360=(12+2x)(10+2x)[/tex]
We can simplify this. On the right, factor out a 2 from the first term and a 2 from the second. This yields:
[tex]360=2(6+x)\cdot2(5+x)[/tex]
Multiply:
[tex]360=4(x+6)(x+5)[/tex]
Divide both sides by 4:
[tex]90=(x+6)(x+5)[/tex]
Multiply on the right:
[tex]90=x^2+6x+5x+30[/tex]
Add on the right:
[tex]90=x^2+11x+30[/tex]
Subtract 90 from both sides. So, our equation is:
[tex]x^2+11x-60=0[/tex]
And we're done!
What is the equation in slope-intercept form of the line that passes through the points ( -4, 47) and ( 2 , -16)?
A) y= -
21
2
x +
979
21
B) y= -
2
21
x +
979
21
C) y= -
21
2
x + 5
D) y= -
2
21
x +5
Answers
Answer:c
Step-by-step explanation:
Laurie earns $7.50 per hour at the fruit stand plus an extra $2.00 per hour on Sundays. One week in August, she worked on Sunday, Monday, and Wednesday. She worked the same number of hours on Monday and on Wednesday. On Sunday she worked 4 hours. If she earned a total of $83.00 for the week, how many hours did Laurie work on Monday? Enter and solve an equation.
Answers
Answer:
Hi there!
Your answer is:
She worked for 3 Hours on Monday.
Step-by-step explanation:
7.5$ per hour
7.5+2$ per hour on Sundays.
In August:
Sunday, Monday, Wednesday.
# of hours for Monday =Wednesday
Sunday= 4 hrs (which would mean 9.5$ * 4)
Monday and Wednesday will be modeled by X
X + 38$ (earned sunday)= 83$
-38
X= 45$
Since X represents BOTH monday and wednesday, divide by 2
45/2 = 22.5$
CHECK YOUR WORK
22.5$ (monday) + 22.5$ (wednesday) + 38$ (sunday)= 83???
45=38=83???
83=83 YES
Now, to determine how many hours that is, we divide the earned wages by the wage per hour.
22.5 / 7.5 = 3 HOURS
CHECK YOUR WORK
3 hours * 7.5 per hour = 22.5???
22.5 = 22.5 YES
Hope this helps
If she worked the same number of hours on Monday and on Wednesday. On Sunday she worked 4 hours. If she earned a total of $83.00 for the week, the number of hours that Laurie work on Monday will be: 3 hours
$7.5= 1 hour Other days
$9.50 or ($7.50+$2.00) = 1 hour Sunday
Let Sunday= 4×$9.50 =$38
Let Monday= x × $7.5=$7.5x
Let Wednesday= x × $7.5=$7.5x
Let Total earning=$83
Let x represent the number of hours
Hence:
First step is to formulate
7.5x+7.5x+38=83
Second step is to calculate how many hours did Laurie work on Monday
x =83-38÷ 7.5+7.5
x=83-38÷15
x=45÷15
x=3 hours
Inconclusion If she worked the same number of hours on Monday and on Wednesday. On Sunday she worked 4 hours. If she earned a total of $83.00 for the week, the number of hours that Laurie work on Monday will be: 3 hours
Learn more here:
https://brainly.com/question/12506050
Which two expressions are
equivalent to 18p-36?
(Pick two choices)
3(9p-12)
9(2p-4p)
2(9p-18)
18(p-2)
Answers
Answer:
9(2p-18) and 2(9p-18)
Step-by-step explanation:
The equivalent expression to the expression 18p - 36 are,
9(2p - 4p) and 2(9p - 18).
What is a numerical expression?A numerical expression is a mathematical statement written in the form of numbers and unknown variables. We can form numerical expressions from statements.
Given, An expression 18p - 36.
We know the distributive property states a(b + c) = ab + ac.
Now, The factors of 18 are, 1, 2, 3, 6, 9, 18.
Therefore,
18p - 36 can be written as,
9(2p - 4p) and 2(9p - 18).
learn more about numerical expressions here :
https://brainly.com/question/29199574
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