Answer:
28
Step-by-step explanation:
-2+9 (4)=7(4)=28
15q – 4r = 62
5q + 8r = 86
Answer:
q = 6; r = 7
Step-by-step explanation:
solve using the quadratic equationX^2 -4x -3 =0
Answer:
[tex]x = 2[/tex] ± [tex]\sqrt{7}[/tex]
Step-by-step explanation:
Lets see the quadratic equation :
x = -b ± [tex]\sqrt{b^2 - 4ac}[/tex] / 2a
So now we have our quadratic :
[tex]x^2 - 4x - 3 =0[/tex]
a = ?^2 (Exponent)
b = ?x (Variable)
c = ? (Constant)
So replace every variable in the quadratic equation with the ones in the quadratic formula.
x = -(-4) ± (-4)^2 - 4(1)(-3) / 2(1)
(Imagine (-4)^2 - 4(1)(-3) in a square root)
x = 4 ± [tex]\sqrt{16 - - 12}[/tex] / 2
x = 4 ± [tex]\sqrt{28}[/tex] / 2
Of course 28 isn't available for a square root property, so lets break it up :
x = 4 ± [tex]2\sqrt{7}[/tex] / 2
Simplify the radical :
[tex]x = 2[/tex] ± [tex]\sqrt{7}[/tex]
^^^
A banana costs three times as much as an apple. The total cost of 1 banana and 1
apple is $1.60. If a represents the cost of 1 apple, which equation could you use to
find a?
Answer:
banana cost 1.20 and the apple cost 0.4
Step-by-step explanation:
1.60 divided by 4 = 0.4 and the cost of apples
1.60 - 0.4 = 1.2 and the cost of bananas
since the banana cost three times you divide by two and subtract that number from the total cost to get three times the amount of the apples price. hope this helped sorry for my spelling
Answer:
Step-by-step explanation:
Write an equivalent expression to 3(2x + 4y) + 3x- 6y
Answer:
9x - 6y
Step-by-step explanation:
3(2x + 4y) + 3x- 6y
6x + 3x - 6y
9x - 6y
Three vertices of parallelogram WZXY are W(-5, 2), X(2, 4) and Z(-7, -3). Find the coordinated of the vertex, Y.
Answer:
[tex]Y = (4,9)[/tex]
Step-by-step explanation:
Given
[tex]W(x_1,y_1) = (-5, 2)[/tex]
[tex]Z(x_4,y_4) = (-7, -3)[/tex]
[tex]X(x_2,y_2) = (2, 4)[/tex]
Required
Find Y
To do this, we make use of the mid-point formula
i.e.
[tex]M = \frac{1}{2}(x_n+x_m,y_n+y_m})[/tex]
WX and ZY are the diagonals of the parallelogram.
The mid-point of WX is:
[tex]M = \frac{1}{2}(-5+2,2+4)[/tex]
[tex]M = \frac{1}{2}(-3,6)[/tex]
The mid-point of ZY is:
[tex]M = \frac{1}{2}(-7+x,-3+y)[/tex]
Equate both values of M
[tex]\frac{1}{2}(-3,6) = \frac{1}{2}(-7+x,-3+y)[/tex]
Multiply both sides by 2
[tex](-3,6) = (-7+x,-3+y)[/tex]
By comparison:
[tex]-7 + x = -3[/tex]
[tex]-3 + y = 6[/tex]
[tex]-7 + x = -3[/tex]
[tex]x = 7 -3[/tex]
[tex]x = 4[/tex]
[tex]-3 + y = 6[/tex]
[tex]y = 6 +3[/tex]
[tex]y = 9[/tex]
Hence:
[tex]Y = (4,9)[/tex]
how do i answer this question
Answer:
a = 2, -7
Step-by-step explanation:
PLEASE HELP ME SOLVE THIS ASAP.
Determine the solution to the System of equations below by using the ELIMINATION METHOD. Show your work
3x+2y=28
x+2y=8
Answer: (10, -1)
Step-by-step explanation:
Subtract the bottom equation from the top to get:
2x=20
X=10
Plug on for X , y= -1
The rule for reflection over the y-axis is (x, y) --> _ (-x, y) (-x, y) (y, x) (y, x) (x, -y) (x, -y) (-y, x)
Answer:
see explanation
Step-by-step explanation:
under a reflection in the y- axis
a point (x, y ) → (- x, y )
Answer:
Step-by-step explanation:
(x,y)-->(-x,y)
what is 4 1/2 times 4 2/3
Answer:
21
Step-by-step explanation:
Answer:
21 is the answer. hope this helps ✌
6% of x = 600. Find the value of x.
Answer:
x=36
I hope this is correct and I hope that it helps
Answer:
the answer is 10,000
Step-by-step explanation:
to find 1%, 600/6
=100 is 1%
100x100
=10,000
You welcome
Sarah can run 5 miles in 60 minutes. Find Sarah’s speed in minutes per mile.
Answer:
d= r*t
d= 5 mi/hr * 5 min * (1/60) hr/min
= 5/12 mi
---------------
Notice how including the units makes it clear that you have divided when you should have multiplied.
Step-by-step explanation:
WILL GIVE BRAINLIEST! PLS HELP!!!
In a model of a house, 1.5cm = 50m. What does the house's length (4.2cm) equal?
Answer: 140m
Step-by-step explanation:
If gh = 31 and hi = 11, then gi
ANSWER=42
HOPE THIS HELPS YOU :)
Simplify: 5a + 1r + 2a + 4r
Answer:
7a+5r
Step-by-step explanation:
5a + 1r + 2a + 4r
add like terms
7a+5r
hope that helps
How would you find the following shapes volume?
Answer:
calculate the volume of big semi Circle and then Subtract the volume of small semi circle from big semicircular
Step-by-step explanation:
The basic formula for volume is length × width × height.
Using the slope formula above, find the slope of the line between two points.
Answer:
Undefined
Step-by-step explanation:
Y2-y1/x2-x1
8-(-2)/5-5
10/0. Slope is undefined
How do you solve this equation
2x+5y=-2
-2x-7y=6
Simplify each expression by combining like terms -14w+10w-11+2w
Answer:
−2 − 11
Hope it helps!!
A student buys
6
music albums and
4
video games. The cost of
1
video game is
$
16
more than the cost of
1
music album.
If the student spends exactly
$
164
, what is the cost of each music album?
Answer: 10$
Step-by-step explanation:
164 - 4x16 = 100
6 + 4 = 10
100 : 10 = 10
Write an integer for the basement floor is 12 feet below the ground?
Answer:
-12 easy dubs
Step-by-step explanation:
easy
if eight times a number is increased by 3 the result is 19 more than six times this digit. find the number
Answer:
8
Step-by-step explanation:
Even though we don't know the number yet, let's name this number "n".
8n + 3 = 6n + 19
8n + 3 - 6n = 6n + 19 - 6n
2n + 3 = 19
2n = 16
n = 16/2
n = 8
Our number is 8.
Note: This answer is 100% correct.
could you please help solve 5.a and 5.b
Answer:
Step-by-step explanation:
5a = 240.96
5b = 20.08
Can somebody help me?
Answer:
3rd one
Step-by-step explanation:
Across which axis the two points are reflections of eachother (2,7) and (-2,7)
Choices :
A: x-axis
B; y-axis
Best answer, best brainliest worth 20 point
Answer:
Answer choice A
comparing functions worksheet
Answer:
?
Step-by-step explanation:
Use the net to find the total surface area of the rectangular prism.
Answer:
a. 46m²
Step-by-step explanation:
To find surface area, we must calculate each of the rectangular prism's faces and add them.
1 × 5 = 5
1 × 5 = 5
3 × 5 = 15
3 × 5 = 15
1 × 3 = 3
1 × 3 = 3
5 + 5 + 15 + 15 +3 + 3 = 46
a. 46 m²
what is the answer 25−12÷[(8−5)×1]
Answer:
21
Step-by-step explanation:
:)))
What is 11/2 subtracted by 11/3
Answer:
11/6
Step-by-step explanation:
Answer:
1 5/6
First make it a mixed number. 11/2=5 1/2. 11/3=3 2/3. Next, you find the common denominator. 2 and 3 are both multiples of 6. You multiply 11x3=33, 2x3=6, 11x2=22 3x2= 6. Your new numbers are 5 3/6 and 3 4/6. Now you subtract. 5-3=2, but you have to regroup, so you end up with 1. 9/6-4/6=5/6. 1+5/6=1 5/6
i sold 43 pounds of cans and they gave me 23.65 dollars how much would i make if i sell 200 pounds
Hai!
You would make 110$
Brainliest maybe?