Answer:
see below
Step-by-step explanation:
x - 2/5= 7
Add 2/5 to each side
x - 2/5 + 2/5 = 7+2/5
x = 7 2/5
or if
( x-2) /5 = 7
Multiply each side by 5
(x-2) /5 *5 = 7*5
x-2 = 35
Add 2 to each side
x-2+2 = 35+2
x = 37
Answer:
x = 37or
x = 7 ²/₅Step-by-step explanation:
x - 2/5= 7
find out what x is
x - 2/5 = 7
x - 2 = 7 (5)
x - 2 = 35
x = 35 + 2
x = 37
--------
or
x - 2/5 = 7
x = 7 + 2/5
x = 7 ²/₅I need help with this
9514 1404 393
Answer:
B. 3x^2 +11x -20 = 0
Step-by-step explanation:
For solutions p and q, the quadratic will be
(x -p)(x -q) = 0
We notice that the leading coefficients of the offered answer choices are greater than 1, so it will be convenient to use a value that "clears fractions."
(x -4/3)(x -(-5)) = 0
3(x -4/3)(x +5) = 0 . . . . multiply by 3 to clear the fraction
(3x -4)(x +5) = 0 . . . . . . clear the fraction
3x(x +5) -4(x +5) = 0 . . use the distributive property
3x^2 +15x -4x -20 = 0 . . . . use the distributive property again
3x^2 +11x -20 = 0 . . . . collect terms
_____
The constant in the product of factors is the product of roots:
(x -p)(x -q) = x^2 -(p+q)x +pq
Here, that would mean the constant would be (4/3)(-5) = -20/3.
If we compare the above quadratic to the standard form:
ax^2 +bx +c = 0
we find that we can divide the standard form equation by 'a' to get ...
pq = c/a
That is, c/a = -20/3, so we might start looking for an answer choice that has a leading coefficient of a=3 and a constant of c=-20.
What is 15% of 60 ?
Answer:
9
Step-by-step Explanation
[tex]15 \% \: of \: 60 \\ \\ = \frac{15}{100} \times 60 \\ \\ = \frac{900}{100} \\ \\ = 9[/tex]
Which two operations are needed to write the expression that represents "eight more than the product of a number and
two"?
A. multiplication and subtraction
B. division and subtraction
C. multiplication and addition
D. division and addition
PLEASE HELP
Jan has a curtain that is 1 ¾ yard long. She wants to increase the length of the curtain by ⅓ of a yard. Jan has ⅞ of a yard of lace. She plans to cut a piece from the lace and sew it onto the bottom of the curtain.
How long will the curtain be after Jan adds the lace? Show your work.
How much lace will be left after Jan cuts the piece off to add the curtain? Show york work.
Answer: A) 2 1/12 yards
B) 13/24 yards
Step-by-step explanation: A)
1 3/4 = 7/4 + 1/3 =
7/4(3/3) + 1/3(4/4)=
21/12 + 4/12 = 25/12 = 2 1/12 yards
B)
7/8 - 1/3 =
7/8(3/3) + 1/3(8/8)=
21/24 - 8/24 = 13/24 yards
2m + 8m converted to Verbal Phrase
Answer:
is it two m plus eight m?
i’ll mark brainlest to anyone who answers first... :/ i need help
Answer:
(3 1/2, -1)
Step-by-step explanation:
How do i solve this slope of a line from a graph?
Answer:
How you solve it is you pick two points on a line and figure out their coordinates. Determine the difference in the y-coordinates of those two points. Then you also do the same thing with the x-coordinates. Then you divide the difference in the Y and X coordinates .
Step-by-step explanation:
hope this helps 100% sure though that it is right.
In this picture, the measure of angle ois 1 radian.
A. True
B. False
Answer: the answer is true I think
Step-by-step explanation:
Helpp? Please! What’s the area of this triangle?
ES LA B
Step-by-step explanation:
Answer:
D
Step-by-step explanation:
You buy butter for $3 a pound one portion of onion compote requires 1.6 oz of butter how much does the butter for one portion cost?
Answer:
.30
Step-by-step explanation:
Purchase Cost = Cost per Portion x Portion Per Purchase
16 oz=1lb
PLEASE ANSWER FAST
the perimeter of a triangle is equilateral. What is the length of 1 side of the triangle? write as an expression
Change each percent to a decimal or a mixed decimal
43%
2 1/2%
13.6%
521%
Step-by-step explanation:
43%=43/100
21/2%=1050
13.6%=136/100
521%=521/100
The middle 5 in 0.555is 10 times the value of the 5 to its
Six more than the product of eight and a number X .right as an expression
Answer:
2x + 8
Step-by-step explanation:
Let x be that number:
2x + 8
-4 1/2 divided by 2/3
Answer:
-4/27
Step-by-step explanation:
first write -4 1/2 as a fraction, which is -9/2. Then you divide by 1/3:
-9/2 / 2/3=
-2/9 * 2/3 =
-4/27
Good luck on your report card!
12 cups in 4 bottles=
Answer:
???
Step-by-step explanation:
1 cup=4 bottles
2 cup=8 bottles
3 cup=12 bottles
4 cup= 16 bottles
5 cup=20 bottles
6 cup=24 bottles
estimated answer for 3 3/7 x 1 3/4 simplify and type a whole number
At the local salon, you can get a haircut for $25.50. You want to leave the hairdresser a 18% tip. How much of a tip will you leave? *
Answer:
$4.59
Step-by-step explanation:
i don’t understand this please help
What is this? I’m too dumb.
Answer:
its 35
Step-by-step explanation:
y = 6
and 6 times 6 is 36
and 36 minus 1 is 35
:)
A right triangle and two of its side lengths are shown in the diagram. 39 cm 12 cm x cm Which measurement is closest to the value of x in centimeters?
A: 37.1 cm
B: 51 cm
C: 27 cm
D: 40.8 cm
Answer:
Hey Army! The correct answer would be A. 37.1cm
Step-by-step explanation:
I got this correct on my test :)
What is the size of angle t in the image below? Give
your answer in degrees ().
t
340°
Reflex angle
Step-by-step explanation:
Reflex angle is more then 180 and less then 360
Answer:
yes buddy ans is reflex angle
pls Help brainly I’ll give u brailest
Gracie, Mary, and Nancy each have a small collection of seashells. Gracie has 5 more than times the number of shells Mary has. Nancy has 1 more than times the number of shells Mary has. Gracie and Nancy have the same number of shells. If x is the number of shells Mary has, identify the equation that represents this situation and identify its solution.
What is the value of the expression below when w = 3. 4w^2 - 7w - 8
Step-by-step explanation: The prime factorization of 4320 is
2•2•2•2•2•3•3•3•5
To be able to remove something from under the radical, there have to be 2 instances of it (because we are taking a square i.e. second root).
√ 4320 = √ 2•2•2•2•2•3•3•3•5 =2•2•3•√ 30 =
± 12 • √ 30
√ 30 , rounded to 4 decimal digits, is 5.4772
So now we are looking at:
w = ( -40 ± 12 • 5.477 ) / -34
Two real solutions:
w =(-40+√4320)/-34=(20-6√ 30 )/17= -0.757
or:
w =(-40-√4320)/-34=(20+6√ 30 )/17= 3.110
MY HEAD HURTS!
Answer:
7
Explanation:
The sum of the cube of a number and two times the number
Answer:
x^3+x×2
I got this : ) I hope it helped
The expression x³ + 2x represents the sum of the cube of a number and two times the number "x."
"the sum of the cube of a number and two times the number."
Let "x" represent the unknown number.
Express the given in algebra form as x³ + 2x.
To calculate the value of this expression for a specific value of "x," substitute the value of "x" into the expression.
Cube the number by raising it to the power of 3 (x³).
Multiply the number by 2 (2x).
Add the results
expression x³ + 2x represents the sum.
learn more about algebra here
brainly.com/question/29131718
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Len wants to write the number 100,000 using a base of 10 and a exponent. What number should he use as the exponent.
Answer:
5
Step-by-step explanation:
5 would be your exponent because you count the number of zeros in the number and that is how many times you time 10 by 10
What is the value of x?
Answer:
The answer is 30 degrees
Step-by-step explanation:
the total of all three angles in a triangle add up to 180.
50+100= 150
so,
180-150= 30
x= 30 degrees
hope this helps!!
Answer:
answer is B 30
Step-by-step explanation:
180 is the total degrees of the whole thing subtract both angels they already give you (100+50) that leaves you with 30
Please check photo and help me answer question.
9514 1404 393
Answer:
The graph shows a polynomial.The real zeros are x = -2, 3, 5.The least degree the polynomial can have is 3.Step-by-step explanation:
There is nothing to indicate the graph is not of a polynomial function. Its zeros are the x=intercepts: -2, 3, 5. There are 3 of them, so that is the least degree the polynomial might have.
The graph shows a polynomial.The real zeros are x = -2, 3, 5.The least degree the polynomial can have is 3._____
Additional comment
The curve is consistent with the graph of ...
y = (1/12)(x +2)(x -3)(x -5)
If the infinite curve y = e−4x, x ≥ 0, is rotated about the x-axis, find the area of the resulting surface.
Answer: the area of the resulting surface is π/16 [ 4√(17) + In( 4 + √( 17)) ]
Step-by-step explanation:
Given that;
y = e^(-4x), x ≥ 0
then, dy/dx = -4e^(-4x)
now, √( 1 + (dy/dx)² ) = √( 1 + ( -4e^(-4x))²) = √( 1 + 16e^(-8x)
so the surface area of the surface obtaining by rotating the curve y = e^(-4x) on ( 0, ∞ ) about x-axis is,
S = ₀∫^∞ 2πy √( 1 + (dy/dx)² ) dx
S = ₀∫^∞ 2πe^(-4x) . √( 1 + 16e^(-8x) dx
S = 2π. ₀∫^∞ e^(-4x) . √( 1 + 16e^(-8x) dx
so LET 4e^-4x = u ⇒ -16e^(-4x) dx = du
⇒e^-4x dx = du/ -16
so whenx = 0, then u =4 and when x → ∞ then e^(-4x) → 0 so u →0
therefore
S = 2π ₄∫⁰ √(1 + u²) . du/-16
= π/8 ₀∫⁴ √(1 + u²) . du
= π/8 [ u/2√(1 + u²) + 1/2 In ( u + √( 1 + u²) ]₀⁴
WE MAKE USE OF
∫√( a² + u²) du = u/2√(a² + u²) + a²/2 In ( u + √( a² + u²)) + C
so
= π/8 [ 4/2√(1 + 16) + 1/2 In ( 4 + √( 1 + u16 ]
= π/8 [ 2√(17) + 1/2 In ( 4 + √( 17)) ]
= π/16 [ 4√(17) + In( 4 + √( 17)) ]
therefore the area of the resulting surface is π/16 [ 4√(17) + In( 4 + √( 17)) ]
Rate of change for y=x-4
Answer: 1/1 or 1
Step-by-step explanation: