Answer:
- 4
Step-by-step explanation:
(2x + 4)² + 1 = 5 ← expand left side using FOIL and simplify
4x² + 16x + 16 + 1 = 5
4x² + 16x + 17 = 5 ( subtract 5 from both sides )
4x² + 16x + 12 = 0 ( divide terms by common factor 4 )
x² + 4x + 3 = 0 ← in standard form
(x + 3)(x + 1) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 3 = 0 ⇒ x = - 3
x + 1 = 0 ⇒ x = - 1
Summation of solutions = - 3 + (- 1) = - 3 - 1 = - 4
prove cos 2 theta - cos 4 theta + cos 6 theta - cos 12 theta = 4 sin 3 theta sin 5 theta cos 4 theta
Answer:
sorry need lng po
Step-by-step explanation:
pa brainlies
f(x)=-9/x, a=-11, I don't know how to do this and I really need help with this. Please help
Answer:
9/11
Step-by-step explanation:
f(X)=-9/X
f(a) =-9/-11
f(a)= 9/11
help me asap!!!!!!!!
Answer:
Answer A
Step-by-step explanation:
Alt Interior angles make two angles parallel
Which number line model represents the expression-1/2+5/4
Answer:
B
Step-by-step explanation:
simplify 4h^j^-5k^7
Answer:
Answer in picture below
can you find the lengths and area and type the correct code? Please remember to type in all caps with no space
Answer:
EGFB
Step-by-step explanation:
To find the lengths of PQ and RS, we can use the Pythagorean Theorem, becasue both triangles have right angles. Base x height equals the area of the rectangle, and base x height divided by 2 gets us the height of the triangle. Thus:
1. 233 meters
2. 21, 840 square meters
3. 241.87 meters
4. 12, 600 meters
Hope this helps.
 RST is a right triangle with RS = 12,
RT = 20, and ST = 16. What is sin R?
[tex]\\ \sf\longmapsto sin\Theta=\dfrac{Perpendicular}{Hypotenuse}[/tex]
[tex]\\ \sf\longmapsto sinR=\dfrac{ST}{RT}[/tex]
[tex]\\ \sf\longmapsto sinR=\dfrac{16}{20}[/tex]
Option B
Find a polynomial f(x) of degree 4 that has the following zeros. 7, −3, 0, −2
Answer:
x^4 - 2x^3 - 29x^2 - 42x
Step-by-step explanation:
Equal all the zeros to x then move them over.
x=7,x=-3,x=0,x=-2
x-7,x+3,x+0,x+2
Then multiply each factor
(x-7)(x+3)(x)(x+2)
x^4 - 2x^3 - 29x^2 - 42x
Maths Question - Topic Pythagoras
Please answer the question. Awarding 20 points
Answer:
h= 17.67 cm
Step-by-step explanation:
We have,
h=x
b=16 cm
p=7.5cm
Using Pythagoras Theorem,
h^2=p^2+b^2
h=√(7.5^2+16^2)
h=√(56.25+256)
h=√312.25
h=17.6705970471 cm
subtract 2 3/4 - 5/16
Answer:
2 7/16
Step-by-step explanation:
2 3/4 - 5/16 → 11/4 - 5/16 (convert 2 3/4 into an improper or top-heavy fraction)
11/4 - 5/16 → 44/16 - 5/16 (multiply 11/4 by 4/4 to make a common denominator)
44/16 - 5/16 = 39/16 (Subtract 44 - 5 = 39)
Simplify (convert back into mixed number)
39/16 = 2 7/16
Hope this helps!
Help please thank you
Maya is wrong, C is the correct answer
explanations:
92800000000 to scientific notation
= 9.28×10¹¹
Mercury is 6.08×10¹⁰
Now both of them combined,
9.28×10¹¹ + 6.08×10¹⁰
= 9.888×10¹¹
Helpppp plzzzzzzzzzzzzz
Answer:
x=90 possibly
Step-by-step explanation:
3x all at 30 degrees. but not posative so please check elsewhere.
Assume that the readings at freezing on a bundle of thermometers are normally distributed with a mean of
0°C and a standard deviation of 1.00°C. A single thermometer is randomly selected and tested. Find the
probability of obtaining a reading greater than 2.011'C.
P(Z > 2.011)
ery
Answer:
0 degree
Step-by-step explanation:
you know all the time the answer of the probality is 0 rarely any other dijit
and if someone could explain how they got this would be great-
are you sloving the x? or what are you sloving
help please! if correct i will give brainley
Answer:
The scale factor is 1.5! I hope this helps!
Answer: 1.5
Each measurement:
12/8 = 1.5
9/6 = 1.5
15/10 = 1.5
Simplify 11y^2+10y-9y^2-8y+5y^0
Answer:
2y^2 + 2y + 5
Step-by-step explanation:
Hope this helps :)
Which is an equation of the line through the origin and (3,4)? Please help
A. y = 4/3x
B. y = 3/4x
C. y = 4x
D. y = 3x
Solve equation for 3(2x - 5) - (2x - 5) = 6(4x + 5)
Answer:
the answer is negative two / x= -2
_________
[tex] \: [/tex]
[tex] \rm3(2x - 5) - (2x - 5 ) = 6(4x + 5)[/tex]
[tex] \rm6x - 15 - 2x - 5 = 24x + 30[/tex]
[tex] \rm4x - 20 = 24x + 30[/tex]
[tex] \rm4x - 24x = 30 + 20[/tex]
[tex] \rm - 20x = 50[/tex]
[tex] \rm \: x = \frac{50}{ - 20} [/tex]
[tex] \rm \: x = \boxed{ - 2 \frac{1}{2} }[/tex]
elise says if u subtract 12 from my number and multiply the difference by -7 the result is -133 what is Elise's number
Answer:
40
Step-by-step explanation:
Need help with this one please explain how you got it
Answer:
B) 40 feet
Step-by-step explanation:
Essentially, there are two similar right triangles in the given problem.
base_L = Base [larger triangle] = 60 ft
base_S = Base [smaller triangle] = 6 ft
x = leg (larger triangle)
y = leg (smaller triangle) = 4 ft
Using the given proportion to solve for the value of x:
[tex]\frac{x}{base_{_L} } = \frac{y}{base_{_S} }[/tex]
[tex]\frac{x}{60ft} = \frac{4 ft}{6 ft}[/tex]
6x = 240
Divide both sides by 6:
6x/6 = 240/6
x = 40
A wire 18 cm long is cut into two pieces. The longer piece is 6 cm longer than the shorter piece. Find the length of the shorter piece of wire
Answer:
shorter piece = 6. longer piece = 12
Step-by-step explanation:
short piece = s
long piece = l
l+s= 18
l= 6+s , substitute
6+s+s = 18
6+2s= 18
2s= 18-6
2s= 12
s=12/2
s= 6= shorter piece
l= 6+s
l= 6+6= 12 = longer piece
Heyyy , help maybe please and thanks
Answer:
brian drink 7 cups of milk
Step-by-step explanation:
Pls help I’ll brainlest
The cat is not hungry, or doesn't like the can of tuna food, which is why they refused to eat it when it was given to them.
Try to give the cat the food again and see their reaction, if that fails, try to give the cat other foods and note the reaction to determine if the cat just doesn't like the tuna in a can or just wasn't hungry at the moment.
Ed bought cupcakes for his sister's birthday party.42 cupcakes had sprinkles on top. The other 33 cupcakes did not have sprinkles. What percentage of the cupcakes had sprinkles?
Answer:50000000000000000000000000000000000000000000000000000
f(x)=2(x-5)(x+7) What is f(-7)
Answer:
f(- 7) = 0
Step-by-step explanation:
Substitute x = - 7 into f(x) , that is
f(- 7) = 2(- 7 - 5)(- 7 + 7)
= 2 × - 12 × 0
= - 24 × 0
= 0
At a recent meeting at the American College of Asthma, Allergy, and Immunology, researchers reported that allergy vaccinations are effective in treating sinusitis (inflammation of the membrane lining the facial sinuses) in individuals predisposed to allergies. Specifically, the researchers reported that of individuals predisposed to allergies find relief from their sinusitis after allergy vaccinations. Suppose that this number is accurate and that individuals predisposed to allergies are chosen at random and given allergy vaccinations.
a. Estimate the number of individuals in the random sample who do not find relief from their sinusitis by giving the mean of the relevant distribution (that is, the expectation of the relevant random variable).
b. Quantify the uncertainty of your estimate by giving the standard deviation of the distribution.
59+2=?
help i need somebody help not just anybody
Answer:
59+2=61
Step-by-step explanation:
The price of an item has dropped to $81 today. Yesterday it was $135. Find the percentage decrease.
Answer: 60%
Step-by-step explanation:
81/135= 60/100
need an answer, please need an answer, please.
Answer:
Step-by-step explanation:
1) c
x² = 1
x² - 1 = 0
Degree of quadratic equation should be 2.
2) 'a'- coefficient of x² cannot be 0
option a
3) option c
Standard form: ax² + bx +c = 0
4) c = 5
3x² + 8x = -5
3x² + 8x + 5 = 0
option c
5) b= 0
option a
I dont understand Analyze and solve percent problems
Answer:
okay, well, is there any link u wanna post for us to help u? maybe we can explain it?
Step-by-step explanation:
