(x + 4)(x − 12) = 0 can someone help me with this
Answer:
You chose the correct option on the picture
x = -4; x = 12
Step-by-step explanation:
You solve for x by simplifying both sides of the equation, then isolating the variable.
If any individual factor on the left side of the equation is equal to 0, the entire expression will be equal to 0.
x + 4 = 0
x − 12 = 0
Set x + 4 equal to 0 and solve for x.
Set x+4 equal to 0.
x+4=0
Subtract 4 from both sides of the equation.
x = −4
Set x − 12 equal to 0 and solve for x.
Set x−12 equal to 0.
x−12=0
Add 12 to both sides of the equation.
x=12
The final solution is all the values that make (x+4)(x−12)=0 true.
x=−4,12
Sorry for taking a while but have a good day
i need help with this badddddddddd
Answer:
She forgot to add the zero when she multiplied 27 x 50
Step-by-step explanation:
If you need one ask me I can try my best to explain
At a community barbecue, Mrs. Walton and Mr. Buckley are buying dinner for their families.
Mrs. Walton purchases 5 hot dog meal and 2 hamburger meals, paying a total of $15.50.
Mr. Buckley buys 1 hot dog meal and 4 hamburger meals, spending $17.50 in all.
How much does a hot dog meal cost?
Answer:
Step-by-step explanation:
5ht dogs=1.50 each
2hamburger=4.00 each
equals15.50
1 ht dog=1.50
4hamburger=16.00
total equals 17.50
hot dog dinner =1.50
first step in solving the equation 4x -8=7
Sending Paypal to whoever gets this right ( i made this question)
BE? I don't really know lol
Find the difference: 25 kg 32 g - 23 kg 83 g
The difference of the weight is 1 kg 949 g.
How to find the difference of numbers?The weight of the two items to find the difference are as follows:
25 kg 32 g23 kg 83 gDifference in mathematics is the result of subtracting one number from another.
Therefore, let's convert the weight .
1000g = 1 kg
32 g =
cross multiply
weight = 32 / 1000
weight = 0.032 kg
1000g = 1 kg
83 g = ?
cross multiply
weight = 83 / 1000 = 0.083 kg
Therefore,
25 kg + 0.032 kg = 25.032 kg
23kg + 0.083 kg = 23.083 kg
Hence,
the difference of the weight = 25.032 kg - 23.083 kg
the difference of the weight = 1.949 kg
Hence,
the difference of the weight = 1 kg 949 g
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pls help question 2!!!!!!!!
Answer:
2/3
Step-by-step explanation:
one hundred percent positive
Answer:
2/3
Step-by-step explanation:
The way we divide fractions like this is to take the inverse of the divisor (second fraction) and multiply. So 1/6 x 4/1 = 4/6 which reduces to 2/3.
Which problem can be solved by dividing 3.5 divided by 5?
Answer:
3.5÷5
Step-by-step explanation:
It's asking what problem can be solved by doing 3.5 ÷ 5
the problem is 3.5 ÷ 5
Using the definition f'(x) = lim f(x+h)-f(x)
h→0.
h
find f'(x) when f(x) =
-2/2x-3
Answer:
Step-by-step explanation:
We will apply the definition of the derivative. Then we use algebra to expand and simplify the numerator. Next, we can cancel a factor of
h
in the numerator and denominator since
h
is approaching zero but not actually equal to zero. Finally, we can simply substitute zero for
h
to evaluate the limit.
f
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x
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=
lim
h
→
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f
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x
+
h
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−
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x
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h
=
lim
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(
x
+
h
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2
−
2
(
x
+
h
)
+
3
−
(
x
2
−
2
x
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3
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h
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lim
h
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2
x
h
−
2
h
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2
h
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−
Solve for x:
8x – 10 = 4x –30
Answer:
X=-5
Step-by-step explanation:
Answer:
x = −5
Step-by-step explanation:
8x – 10 = 4x –30
-4x -4x
4x - 10 = -30
+10 +10
4x = -20
/4 /4
x = -5
There are a total of 114 oak and pine trees on a piece of land. There are 26 fewer oak trees than pine trees. There is a regulation that the number of oak troos on this piece of land cannot exceed one-third of the total number of trees. Find how many oak and pine trees are on this piece of land and determine whether the solution is viable or nonviable A. There are 35 oak trees and 78 pine trees. The solution is viable. B. There are 35 oak trees and 78 pine trees. The solution is nonviable. C. There are 42 oak trees and 70 pine trees. The solution is nonviable D. There are 44 oak trees and 70 pine trees. The solution is viable
Answer:
c
Step-by-step explanation:
Answer:
There are 42 oak trees and 70 pine trees. The solution is nonviable.
Step-by-step explanation:
:)
In a diagram of a landscape plan, the scale is 5 cm = 12 ft. In the diagram, the
trees are 9 centimeters apart. How far apart should the actual trees be planted?
Answer:
21.6 feet.
Step-by-step explanation:
By proportion that is (9/5) * 12
= 1.8 * 12
= 21.6 feet.
what is the discriminant of the polynomial below 4x^2 +4x + 1
The value of the discriminant of the given quadratic equation is 0.
What is a Discriminant?The part in the formula of a quadratic equation that helps us to know the nature of the roots of a quadratic equation is known as a discriminant.
D = b² - 4ac,
If the value of the discriminant is greater than zero then the roots of the equation are real and distinct,If the value of the discriminant is equal to zero then the roots of the equation are real and same, andIf the value of the discriminant is less than zero then the roots of the equation are imaginary.Given the quadratic equation 4x² +4x + 1, if this equation is compared with the general quadratic equation. Then the value of the variables can be written as,
a = 4
b = 4
c = 1
Now, the value of the discriminant of the equation can be written as,
D = b² - 4ac
= (4)² - 4(4)(1)
= 16 - 16
= 0
Hence, the value of the discriminant of the given quadratic equation is 0.
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Tommy was trying to solve the system of a linear equation and a quadratic equation shown below. 2x – y = –1 x2 – 5x – y = –7 Tommy had completed the following steps in his algebraic solution process but could not factor the resulting quadratic, x2 – 7x – 1, to complete the problem. Step I: y = 2x + 1 Step II: x2 – 5x – (2x + 1) = –7 Step III: x2 – 5x – 2x – 1 = –7 Step IV: x2 – 7x – 1 = –7 Determine the step in which Tommy made his mistake and justify your reasoning.
Answer:
Step IV; Tommy must set the quadratic expression equal to 0 before factoring.
plz give brainlyest
It is found that in Step IV; Tommy must set the quadratic equations equal to 0 before factoring and then solving.
What is a quadratic equation?A quadratic equation is the second-order degree algebraic expression in a variable. the standard form of this expression is ax² + bx + c = 0 where a. b are coefficients and x is the variable and c is a constant.
Given that the system of a linear equation and a quadratic equation.
2x – y = –1
x² – 5x – y = –7
Now Tommy had completed the following steps in his algebraic solution process but could not factor the resulting quadratic equation as;
x² – 7x – 1,
Step I: y = 2x + 1
Step II: x² – 5x – (2x + 1) = –7
Step III: x² – 5x – 2x – 1 = –7
Step IV: x² – 7x – 1 = –7
Therefore, we conclude that in Step IV; Tommy must set the quadratic equations equal to 0 before factoring and then solving.
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A side of the triangle below has been extended to form an exterior angle of 128. Find the value of x.
Answer:
52°
Step-by-step explanation:
Linear pair: If the non-common arms of two adjacent angles from a line, then they are called linear pair and they add up to 180.
x + 128 = 180 {linear pair}
x = 180 - 128
x = 52°
Norman makes $15 commission for selling $200 in merchandise. He makes $37.50 commission for selling $500 in merchandise. Assuming that the variables are directly related and Norman wants to make $150 in commission, what is the total value of merchandise he needs to sell?
$335.00
$612.50
$2,000.00
$5,000.00
Which one is the answer
Answer:
i think it should be option C.......
what is the reciprocal of 4/7
The reciprocal of 4/7 is 7/4
HELPPPPPP ILL GIVE BRAINLEST !!!!! PLEASE
A florist has to pay $7.50 each time a customer chooses a competitor for the delivery of flowers. Which expression shows the amount that the florist earns if p people use a competitor for delivery, and the company makes $320.00 before any payment is made to their competitors?
320 minus 7.50 p
320 + 7.50 p
7.50 p minus 320
7.50 p + 320
Answer:
320 minus 7.50 p
Explanation:
the florist earned 320 dollars and then lost money due to having a competitor deliver, since we dont know the amount of people who chose competitors we use the term p next to the amount that p is worth because each time a customer uses a competitor it costs 7.50 out of the original 320.
[tex]8^{2}=x\\x+12=y\\y-3=n\\n=?[/tex]
Answer:
n = 73
Step-by-step explanation:
—Math8² = x ==> x = 64
x + 12 = y ==> y = 64 + 12 = 76
y – 3 = n ==> n = 76 – 3 = 73
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Find the domain
Please help
Answer:
number. 3 hope this helps
Graph a line with a slope of 4 that contains point (4,3)
Answer:
y-3= 4(x-4)
y-3= 4x-4
y=4x-4+3
y=4x-1
Is this true? log(x) = logb(c) * log(x). For this question, first try several examples. Then prove it. See the proofs in the Basic Math lecture for ideas. (Hint: let
m = logb(x) and n=logb(c) and p = logc(x). Then use the definition of logarithms and rules of exponents to show m = np.
The logarithmic statement [tex]log_bx=log_bc \cdot log_cx[/tex] is true.
Logarithm is a mathematical operator that is used to simplify the exponential equations .
The logarithm is exponentiation's opposite function in mathematics. This indicates that the base b of another fixed number, the logarithm of a given number x, is the exponent that must be raised in order to obtain the given number x.
The exponential equation logₓy=n is equivalent to xⁿ=y.
The properties of Logarithmic equations are:
log x + log y = log xylog x-log y= log (x/y)log ₙn=1n log x = log xⁿ[tex]log_ab=\frac{log_xa}{log_xb}[/tex] , x≠0Now the given expression is of the form: [tex]log_bx=log_bc \cdot log_cx[/tex]
We know that [tex]log_bc=\frac{log_nc}{log_nb}[/tex] and [tex]log_cx=\frac{log_cx}{log_nc}[/tex]
let n=[tex]log_bc=\frac{log_nc}{log_nb}[/tex] and p=[tex]log_cx=\frac{log_cx}{log_nc}[/tex]
Now for the right side of the equation we have:
n×p
[tex]log_bc \cdot log_cx[/tex]
This can be written as:
[tex]or, \frac{log_nc}{log_nb}\cdot\frac{log_cx}{log_nc}\\or, \frac{log_cx}{log_nb}\\or, log_bx[/tex]
which is equivalent to the left side of the equation.
Hence the statement [tex]log_bx=log_bc \cdot log_cx[/tex] is true.
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Please answer this as quick as you can
Answer:
B is correct because there cannot be negative people in a cafeteria.
Step-by-step explanation:
Find the difference. 862 - 316.87
Answer: 545.13
Step-by-step explanation:
Answer:
the first one is a whole number and the other one is a decimal number
thank me later
Step-by-step explanation:
-3.1x +6x = 2+3z+8-10
=
Answer:
_
z=96x
(line on top of the nine)
Step-by-step explanation:
Essential Question 3-5, 7th Grade I WILL GIVE BRAINLIEST!
What does the graph of a proportional relationship look like?
Answer:
It is a straight line because the x and y values are proportional.
Step-by-step explanation:
Answer:
it looks like a straight line thru the origin
There were 8 roses in the vase. Jessica cut some more roses from her flower garden and put them in her vase. There are now 13 roses in the vase. Write an equation for how many roses did she cut ?
Answer:
8+x=13
Step-by-step explanation:
Answer:
13-8=r
r=roses she cut
Step-by-step explanation:
you take away how many roses there were in the begining from the amount she started with and you get r (the amount of roses she cut).
Guys anyone please help . Please explain how to solve these questions it gives the answers but I need expiation (Calculus) ,I’ll give brainliest for the correct answer ! Pleasseee
9514 1404 393
Answer:
(ii) center: (-3, 6)
(iii) A(-3, 6-√51), B(7, 6), D(-3, 6+√51), H(-13, 6)
(iv) (x +3)²/100 +(y -6)²/51 = 1
Step-by-step explanation:
(ii) The center is the midpoint between the foci:
center = ((-10, 6) +(4, 6))/2 = (-10+4, 6+6)/2
center = (-3, 6)
__
(iii) The vertices are the center plus or minus the semi-major axis length in the x-direction: (-3±10, 6).
The semi-minor axis length is the root of the difference of squares of the semi-major axis and the center-focus distance:
semi-minor axis = √(10² -7²)
semi-minor axis = √51
So, the co-vertices are the center plus or minus this value in the y-direction: (-3, 6±√51)
Using the labeling in the drawing the various points are ...
A(-3, 6-√51), B(7, 6), D(-3, 6+√51), H(-13, 6)
__
(iv) For center (h, k) and semi-axis lengths 'a' and 'b' the equation of an ellipse is ...
(x -h)²/a² +(y -k)²/b² = 1
For the center and axes here, the equation is ...
(x +3)²/100 +(y -6)²/51 = 1