Answer:
(x - 2)(7x - 4)=0
Step-by-step explanation:
[tex]7 {x}^{2} + 8 = 18x \\ 7 {x}^{2} - 18x + 8 = 0 \\ 7 {x}^{2} - 14x - 4x + 8 = 0 \\ 7x(x - 2) - 4(x - 2) = 0 \\ (x - 2)(7x - 4) = 0[/tex]
I need help with this
The following value is closest to what number? 292
What is this called? I’m trying to look up a video on how to do these.
y = - 7/2x -4
Answer:
linear equations, only when it is y=(equation with an x
variable)) or x=(equation with an y
variable), usually you tend to graph these.
why is knowing math so important
Math is used to help calculate certain things such as taxes and such, but they are mostly important for jobs since certain jobs require knowledge of math. Jobs such as working in a branch of engineer, architecture, etc.
Write an explicit formula for the sequence.
-20.-12.-4.4
An) = -20n - 8
O A(n) = -20 - 8n
A(n) = -20 + (n - 1)8
An) = n - 8
Answer:
I need help
Step-by-step explanation:
How many protons would make up 9.435 x 10-22 g?
Answer:
Mass of proton (m) = 1.67×10^(-27) kg
Step-by-step explanation:
Mass of proton (m) = 1.67×10^(-27) kg.
Since, 1 kg = 1000 g
Therefore, m = 1.67x10^(-27+3) g = 1.67x10^(-24) g
Let N no. of protons be present in 1 g. Hence, Nxm = 1 g
So, N = 1 / m = 1 / (1.67x10^(-24))
N = 6x10^(23) (approx.)
Exact mass of proton gives N = 6.022 x 10^(23).
That is a very special no. In fact, it is the Avogadro’s constant used frequently in chemistry. Avogadro’s no. is actually the number of atoms in exactly 12 g of C-12 isotope of carbon. Since, the atomic mass of C-12 is 12 u (unified mass), then again the no. of carbon atoms turn out to be N.
Simplify 3/100 +33/100, correct to 1 decimal place.
Answer:
Step-by-step explanation:
3/100+33/100=36/100=0.36≈0.4(round to one decimal place)
The number of hot dogs Ryan can eat varies directly with the amount of time he spends eating. If Ryan can eat 14 hot dogs in 6 minutes, how many hot dogs can he eat in 15 minutes?
Answer:
35
Step-by-step explanation:
If I am not correct I'm sorry.
If Ryan can eat 14 hot dogs in 6 min then he should be able to eat about 35 hot dogs in 15 mins.
14/6= 2.333...
so 2.333... x 15 would equal 35
I hope this helps.
Answer:
Ryan can eat about 34.5 hot dogs in 15 minutes
Step-by-step explanation:
You first need to find how many hot dogs ryan eats in one minute. By doing this you need to do 14 divided by 6 and that will get you to 2.3
Than you need to take that 2.3 and muliply it by the 15 minutes and than that would get you to your answer of 34.5 hotdogs in 15 minutes
I hope this helped!
can someone please help me .
X+1
If g(x) =
X-2 and h(x) = 4 - X, what is the value of (g•h)(-3)?
8/5
5/2
15/2
18/5
Answer: the correct answer is: 8/5
Step-by-step explanation: just took the quiz.
A phone company charges a base fee of $12 per month plus an additional charge per minute. The monthly phone cost can be represented by this equation: = 12 + • , where is the additional charge per minute, and is the number of minutes used. Which equation can be used to find the number of minutes a customer used if we know and ? a. = C-12/a b. =(−12)− c. =−12 d. = −12
Answer:
-12
Step-by-step explanation:
i had got it right yay
Answer:
:)
Step-by-step explanation:
m=c-12/a
I had this on a test and I got it right
Is there a difference between 6.780 and 6.78? Why or why not?
Answer:
Step-by-step explanation:
No there is no difference because in a decimal the zero's don't matter, they can go on infinitely but if the numbers above zero are the same and in the same order then the zero's don't make any difference.
In the expression 3v – 8, what is the variable?
Answer:
V is the variable
Step-by-step explanation:
Answer:a. v
Step-by-step explanation:
Given
Required
Identify the variable
Literary, variable means things that change in values;
Going by this definition, we have that:
3 -> This is not a variable because its value will always be 3
v -> This is a variable because its value can change once its value changes, the result of the expression will also change
- -> This is not a variable; it is an arithmetic operator to subtract
8 -> This is not a variable because its value will always be 8
Take for instance
When
Notice that there's a difference in both results;
This is as a result of v being a variable
Step-by-step explanation:
What is 39,404,000 expressed in scientific notation?
Answer:
3.9404×10^7
Im not sure how to explain it.
HELP HELP Point F is the midpoint of segment DE. DF = 2x+6 and DE = 2x+36. Find DE.
Answer:
since F is midpoint
DF= FE = 2x+6
DF +FE=DE
2x+6 + 2x+6 = 2x+36
4x + 12 = 2x+36
2x = 24
x=12
DE =2x+36 =2*12 + 36 = 60
Step-by-step explanation:
is 4.5 times 10 to the negative 12th power in scientific notation
Answer:0.0000000000045
Step-by-step explanation:
move decimal to left 12 times , left since its negative
36=q^2 Find the solution to the equation
Answer:
i think its 18
(also if you dont mind can you please help me with my question)
i need help showing my answer -7/12 + 1/2
Answer -1/12
Step-by-step explanation:
-7/12 + 1/2 cannot be added until you change 1/2 into 6/12.
To change 1/2 to 6/12, you have to multiply 1/2 by 6 because you want the same denominator. Since you can't just make a whole new fraction by changing the denominator, you have to multiply the numerator by 6 as well.
After changing the fraction, you should get -7/12 + 6/12.
now you can just add the numerators and denominators together and get -1/12!
Can someone help me with number 7 and 8. Thank you
Answer:
Q7) ( 2,-2)
Q8) (- 0.5 , -2)
Step-by-step explanation:
As we have to find the mid-points of the line segments, the line segments will be divided in same ratio i.e. 1:1 (∵ A Mid-point divides a line segment into equal parts )
According to Section formula ,
[tex]( x' , y') = (\frac{mx^2 + nx^1}{m+n} , \frac{my^2+ny^1}{m+n} )[/tex]
where (m,n) are the ratios in which a line segment is divided & ( x¹ , y¹ ) ( x², y²) are the co-ordinates of a line segment.
In Q7 ,
x¹ = 3 , y¹ = -9 , x² = 1 , y² = 5 & m = n = 1
So putting the section formula here gives :-
[tex]( x' , y') = (\frac{1*1 + 1*3}{1+1} , \frac{1*5+1*(-9)}{1+1} ) = ( 2 , -2)[/tex]
In Q8 ,
x¹ = 5 , y¹ = -1 , x² = -6 , y² = -3
So putting the section formula here gives :-
[tex](x' , y') = (\frac{1*(-6) + 1*5}{1+1} , \frac{1*(-3) + 1*(-1)}{1+1}) = ( -0.5 , -2)[/tex]
Edwardo has $24 saved. If he saves $8 each week, how much money will he have in 5 weeks ?
Answer:
64$
Step-by-step explanation:
Ifshe saved 8$ each week then that would equal to 40
But by adding the 24$ already saved the total amount would equal to 64$
A rope which is 18.35 centimeters long is cut into 6 pieces of equal length. What is the
length of each piece?
Answer:
3.05
Step-by-step explanation:
if you divide 18.35 by 6 it is 3.05.
Answer:
3.08533333333 continued indefinitely
Step-by-step explanation: you will need to divide 18.35 cm by 6 pieces.
.what is formula to calculate sqare
Answer:
Area = a2
a = length of side
Given the following formula, solve for t.
V = u + at.
A. t= a(v – u)
B. t = v-u/a
C. t=v+u/a
D. t =a(v + u)
2. Multiply (-4)(-2)(-5). (5 points)
O
-40
O
-8
8
Answer: -60
Step-by-step explanation: -4x-3x-5=-60...
what is the value of x ?
Step-by-step explanation:
2(2x - 6) + 2(x + 3) = 26
4x - 12 + 2x + 6 = 26
4x + 2x -12 + 6 = 26
6x - 6 = 26
6x = 26 + 6
6x = 32
x =32/6
x = 5.3333
Answer:
Step-by-step explanation:
2(2x -6) + 2(x + 3) = 26
4x - 12 + 2x + 6 = 26
6x - 6 = 26
6x = 32
x = 32/6= 16/3
what is Z 2(2z -4)=4
Answer:
z=3
Step-by-step explanation:
2(2z -4)=4
Divide by 2
2/2(2z -4)=4/2
2z-4 = 2
Add 4 to each side
2z-4+4 = 2+4
2z = 6
Divide by 2
2z/2 = 6/2
z=3
C(-3,-1), Q(-2,3)
Find the distance between each pair of points
Answer:
The answer is
[tex] \sqrt{17} \: \: \: or \: \: \: 4.12 \: \: \: \: units[/tex]Step-by-step explanation:
The distance between two points can be found by using the formula
[tex]d = \sqrt{ ({x1 - x2})^{2} + ({y1 - y2})^{2} } \\ [/tex]
where
(x1 , y1) and (x2 , y2) are the points
From the question the points are
C(-3,-1), Q(-2,3)
The distance between them is
[tex] |CQ| = \sqrt{ ({ - 3 + 2})^{2} + ( { - 1 - 3})^{2} } \\ = \sqrt{ ({ - 1})^{2} + ( { - 4})^{2} } \\ = \sqrt{1 + 16} \\ = \sqrt{17} \: \: \: \: \: \: \: \\ = 4.1231...[/tex]
We have the final answer as
[tex] \sqrt{17} \: \: \: or \: \: \: 4.12 \: \: \: \: units[/tex]
Hope this helps you
Which of the following expressions is correct?
|-37| = 37
-|37| = 37
|-37| = -37
-|-37| = 37
Answer:
The first one is correct
Step-by-step explanation:
Absolute value (Anything that is inside the tabs) will always be positive, even if there is a negative sign in the number. If the number is already positive, it's still positive.
Answer:
the first one
Step-by-step explanation:
the negative sign is in the box
4 1/8 (3x−4)=33
pls find x thank you
Answer:x=3 2/3
Step-by-step explanation:
Answer:
the answer is 23.3
Step-by-step explanation:
2120
Question #7MultipleChoice
Show Answer
Subtract the following fractions. (Reduce answers to lowest terms.)
3/10 - 1/4=
3/14
3/6
1/2
1/20
Answer:
1/20
Step-by-step explanation:
3/10 - 1/4
First, convert the fractions to a common denominator:
3/10 *2/2 = 6/20
1/4 * 5/5 = 5/20
Now put them back into the equation and solve:
6/20 - 5/20 = 1/20
Another way to do this:
3/10 - 1/4
Convert the fractions into decimals:
3/10 = 0.3
1/4 = 0.25
substitute back into the equation and solve:
0.3 - 0.25 = 0.05
convert back into fractions:
0.05 = 1/20