Answer:
[tex]3x^{2} -9x-30[/tex]
Step-by-step explanation:
(x - 5)(3x + 6)
[tex]3x^{2} +6x-15x-30\\3x^{2} -9x-30[/tex]
Answer:
3x² - 9x - 30
General Formulas and Concepts:
Algebra I
Expand by FOIL (First Outside Inside Last)Combining Like TermsStep-by-step explanation:
Step 1: Define
(x - 5)(3x + 6)
Step 2: Expand
Expand [FOIL]: 3x² + 6x - 15x - 30Combine like terms: 3x² - 9x - 30would a triangle with the sides of 16 m, 30 m, and 34 m make a right triangle?
Answer:
Yes, it would make a right triangle.
Step-by-step explanation:
A right triangle must follow the equation: a^2 + b^2 = c^2
16^2 + 30^2 = 34^2
256 + 900 = 1156
1156 = 1156
What is the circumference?
7 ft
Answer:
C = 7π
Step-by-step explanation:
Diameter: 7 feet
Formula: C = πd (Circumstance = π × Diameter)
C = 7π
A cookie contains 150 calories. If you eat no fewer than 2 cookies and no more than 8 cookies, how many calories will you consume?
What would the inequality look like
Answer: 300cal ≤ y ≤ 1200 cal
Step-by-step explanation:
Let's define x as the number of cookies that you eat, and y as the number of calories you consume in those cookies.
"if you eat no fewer than 2 cookies..."
This is written as:
2 ≤ x
This means that x can be equal to 2, or larger than 2.
"...and no more than 8 cookies"
This is written as:
x ≤ 8
This means that x can be smaller than 8 or equal to 8.
If we combine those two, we have:
2 ≤ x ≤ 8
And we know that each cookie contains 150 calories, and rememer that these numbers represent number of cookies, then the numbers of calories will be:
2*150 cal ≤ y ≤ 8*150 cal
300cal ≤ y ≤ 1200 cal.
Find the 82nd term of the arithmetic sequence -10,6,22
Answer:
a(82) =1286
Step-by-step explanation:
a(n) = a +(n-1)d
a=-10
d=6+10=22-6=16
°.° a(n) = -10 +(n–1)16
a(82) = -10 +(82–1)16
=-10+(81x16)
=1286
hope this helps
Scientists find a wooden spoon and they want to use Carbon dating to out how old it is. If the amount of carbon left is 85% of its original amount, how old this artifact? (Note here that we are actually finding the age of the wood from which the spoon was made
Answer:
1,336 year (Approx)
Step-by-step explanation:
Half life of carbon 14 = 5,700 year
Equation used for carbon dating:
t = [5,700/In2]ln[N]
t = [5,700/In2]ln[85%]
t = [5,700/In2]ln[0.85]
t = 1,336 year (Approx)
A metal manufacturing company reduces the length of a 12.5-inch cylindrical rod, after which the rod measures 7.8 inches. How many inches was the rod shortened by?
Answer:
4.7 inches
Step-by-step explanation:
The original is 12.5, and it was shortened to 7.8. So take the original, subtract the result, and you will get the answer.
12.5-7.8=4.7
Answer:
4.7 inches hope it helped
Evaluate 11 1/2 +(−4 2/3)x for x=6.
A. −17 1/2
B. −16 1/2
C. 36 1/6
D. 39 1/2
Answer:
C
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Please help!! answer choices and question below
Answer:
3 because 3 times 4 is 12 and 18 divided by 6 is 3
Step-by-step explanation:
Complete the steps to solve for x.
-0.51x + 0.21x = 6.3
-0.51x + 0.21x = 6.3
x= 6.3
what is 28r-9(2r+6) simplied?
Answer:
10r-54
Step-by-step explanation:
Answer:10r-54
28r-9(2r+6) bring -9(2r+6) that gives us -18r-54 then we bring back the 28r translating to 28r-18r-54 simply 28-18=10 so 10r-54.
i need help with the picture down below. asap if you could.
Answer:
3x - 5y = -55
Step-by-step explanation:
Find the slope-intercept equation of the line.
I need the equation not the answer
Help plz
Answer:
y=4/5x+4
Step-by-step explanation:
5th grade math. Correct answer will be marked brainliest.
Answer:
Leslie's answer shows 10 hundredths, which is the same as the 1 tenths in Paul's answer. So both answers are correct.
Step-by-step explanation:
A zero at the end of a decimal number is redundant, it makes no different to the value. It's kind of like how 010 is equal to 10. There is no point in the extra zero at the front. I hope this helps!
− ∣2x + 4∣ + 3 = -4
Confusion has entered my brain.
Answer:
[tex]x=\frac{3}{2}[/tex] or [tex]x=-\frac{11}{2}[/tex]
Step-by-step explanation:
Step-by-step on how to solve it is in the image below.
Hope this helps! :)
What is the value of a?
–31
–7
–5
–1
Answer:
i think its -31
Step-by-step explanation:
if im wrong im sorry
Answer:
D. -1
Step-by-step explanation:
Edge
is 9.22222 a irrational number
Answer:
No
Step-by-step explanation:
9.222222 is not a irrational number.
Hope this helps plz hit the crown :D
Answer:
yes it is
Step-by-step explanation:
what is the y-intercept of the graph of the function
Answer:
(0,-5)
Step-by-step explanation:
It is where the line meets the y axis
Carl Cornfield has been wondering whether he should plant white corn this year. He decides to sample 100 customers. 38% say they would purchase white corn. Carl wants to have a 95% confidence interval for this proportion.
The confidence interval is from 33% to 43% (to the nearest percent).
True
False
Answer:
true
Step-by-step explanation:
Which polynomial function could be represented by the graph below?
On a coordinate plane, a parabola opens up. It goes through (negative 2, 0), has a vertex at (negative 0.5, negative 4.5), and goes through (1, 0).
f(x) = x2 + x – 2
f(x) = 2x2 + 2x – 4
f(x) = x2 – x – 2
f(x) = 2x2 –2x – 4
Answer:
B! just took it!
Step-by-step explanation:
Answer:
B. f(x) = 2x2 + 2x – 4
Step-by-step explanation:
it's lit!!!
LINEAR EQUATIONS
2(x-1)=3(x+1)
Factor this -5x2 + 15x + 140
Answer: -5( x - 7) (x + 4)
Step-by-step explanation:
Factor the polynomial.
Answer: 5(3X+26)
Explanation: M a t h w a y
Which is the equation of a line that has a slope of -5 and passes through point (-3,-1)? O y=-3x+1 O y=-3x+3 O y=-x-1 O y=-x-3 3
Note: Your answer choices are not clear, thus I have solved the complete question which anyways should be able to clear your concept.
Answer:
The equation of a line that has a slope of -5 and passes through the point (-3,-1) will be:
y = -5x - 16Step-by-step explanation:
Given
slope = m = -5point = (-3, -1)We know that the slope-intercept form of the line equation is
[tex]y=mx+b[/tex]
Here:
m is the slopeb is the y-interceptNow, substituting m = -5 and (-3, -1) in the slope-intercept form of the line equation to determine the y-intercept 'b'
[tex]y=mx+b[/tex]
-1 = -5(-3) + b
switch sides
-5(-3) + b = -1
15 + b = -1
b = -1 - 15
b = -16
Now, substituting m = -5 and b = -16 in the slope-intercept form of the line equation to determine the equation of a line
[tex]y=mx+b[/tex]
y = -5x + (-16)
y = -5x - 16
Therefore, the equation of a line that has a slope of -5 and passes through the point (-3,-1) will be:
y = -5x - 16Note: Your answer choices are not clear, thus I have solved the complete question which anyways should be able to clear your concept.
2 - x = 13 what is the value x
Answer:
-11 because if you take a positive number and subtract a negative number you get a positive number and the two subtraction simboles (2- - 11 = 13) cancel eachother out and make the equation and addition instead of subtraction
(Does that help?)
Step-by-step explanation:
You and a friend decide to sell cookies to raise
money for a local fundraiser. After d days, you
have raised (5d + 6) dollars and your friend has
raised (6d + 2) dollars. Write an expression that
represents the total amount of money that you
raised together
square root of 7-?
.............................
Answer:
2.64575131106
Step-by-step explanation:
Answer:
Do you mean -7?
If so the answer is 2.64575131i
(The square root of just seven is the same answer but without the i, in other words 2.64575131 )
what would you do if u got hurt really bad and how would u deal with it???? 5 sentences
Answer:
I would call for help, calm myself down, and try not to cause a scene. once I get help I won't panic or the situation will get worse. I'll stay positive and let my self heal for however long I need to rest for. Then when i'm better i'll make sure not to make the same mistake again and be more careful.
Step-by-step explanation:
Please help i need this ASAP! C(x)=0.7x^2-210x+27,738
Do not round your answer
Answer:
27/x
Step-by-step explanation:
I already named the shape I just need help solving for x
Answer:
3 =x
Step-by-step explanation:
The sides are all equal length
x+5 = 3x-1
Subtract x from each side
x+5 -x = 3x-1 -x
5 = 2x-1
Add 1 to each side
5+1 = 2x-1+1
6 = 2x
Divide by 2
6/2 = 2x/2
3 =x
Solve this system of equations using elimination.
X-6=-17
-2x+12y=7
Answer:
Add the equations in order to solve for the first variable. Plug this value into the other equations in order to solve for the remaining variables.
Point Form:
(−11,−5/4)
Equation Form:
x=−11,y=−5/4
A circle passes through the point (2, 2) and has its center at (1, -3). The radius of the circle is how many units.
Step-by-step explanation:
radius
(2,2)-(1,-3)=(1,5)
radius= 5.09 units