Answer:
Lesser r = - 7 - √11 or -10.32 to nearest hundredth.
greater r = - 7 + √11 or -3.68 to nearest hundredth.
Step-by-step explanation:
(x + 7)^2 – 11 = 0
(x + 7)^2 = 11
x + 7 = ±√11.
HELPPPP!!!! ASAPPPP!!!
Which number could be used as a counterexample to show that the conjecture “All even numbers are divisible by 4” is false?
12
10
8
24
Answer:
10
Step-by-step explanation:
10/4 = 2.5(fraction)
12/4 = 3
8/4 = 2
24/4 = 6
The numbers 2, 6, 10, and so on are not divisible by the 4 but they are even numbers. Then the correct option is B.
What is Algebra?The analysis of mathematical representations is algebra, and the handling of those symbols is logic.
The statement is given below.
“All even numbers are divisible by 4”
The statement “All even numbers are divisible by 4” is false.
Because the numbers 2, 6, 10, and so on are not divisible by the 4 but they are even numbers.
Not all even numbers are divisible by 4, but some numbers are divisible by 4.
Then the correct option is B.
More about the Algebra link is given below.
https://brainly.com/question/953809
#SPJ2
If there is one obtuse angle, how many angles are
acute?
a 2
b 3
C 1
d 6
Answer: a .2
Step-by-step explanation: A triangle is 180 degrees. If one angle is obtuse, it is more than 90 degrees. That leaves the two remaining angles having to add up to less than 90 degrees combined. So both have to be acute.
(3x+1)(3x^2-6x-8) in standard form
Answer:
3s3x2+6x+4.3x2+6x+4
Find a polynomial equation that has zeros at x = -2,2- 3 and a double root at x = 5
A)
y=(x + 2)(x - 3)(x - 5)
B)
y = (x-2)(x * 3)(x + 5)
C)
y = (x + 2)(x - 3)(x - 5)?
D)
y = (x - 2)(x + 3)(x + 5)2
Answer:
y = (x + 2)(x - 2)(x + 3)[tex](x - 5)^{2}[/tex]
Step-by-step explanation:
y = (x + 2)(x - 2)(x + 3)([tex]x - 5)^{2}[/tex]
I don't see any of the answers given as being correct.
The frequency, or pitch, of a musical note varies inversely with the wavelength. The speed of sound, 340.2 meters per second, is the constant of variation.
An “A” note in octave 5, has a frequency of 880 Hertz. What is the wavelength of the sound made by the tuner in meters?
Answer:
The wave length = 0.387 meters
Step-by-step explanation:
Remark
An inverse relationship is one of the variables is in the denominator of a fraction and the other is given on the other side of the equal sign. It sounds more complicated than it is. Here's that long sentence broken down to 3 letters.
f = k/w
Formula
f = k/w
f is the frequency
k is the speed of sound
w is the wavelength
Givens
f = 880 Hz
k = 340.2 m/s
w = ?
Solution
f = k/w
880 = 340.2/ w Multiply both sides by w
880*w = w* 340.2 /w
880*w = 340.2 Divide by 880
w = 340.2/880
w = 0.387 m
Someone please help me with this ASAP I have only 4 minutes!
Answer:
A
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
yw
A water tank fills as shown in the graph below.
What is the slope of the line?
A. 1/3
B. 2/3
C. 3/2
D. 3
Help please!!!!!!!!!!!!
Answer:
A
Step-by-step explanation:
Answer:
I believe the answer is A
Step-by-step explanation:
Since on B, Negative 2.47 is less than Negative 2.28 So thats wrong.
C is just plain wrong.
D is 3, 7.5, 7.6, .22
which equation is true ?
(1.) 4/-9 = -4/9
(2.) 4/-9 = 2/-3
(3.) 4/-9 = 4/9
(4.) 4/-9 = 2/3
Please please please help me I need a 80 to pass
Answer:
fb=7 units
Step-by-step explanation:
Answer:
If they’re both equal to each other in length and both pentagons, then I think the answer is 7 units.
what's the selling price if $42.50 was the original price and the markup is 6% with a discount of 5%
Answer:
51
Step-by-step explanation:
I did this by multiplying 42.50 by 0.06 and divide that answer with 0.05.
What is the measurement of arc BE?
PLEASE HELP ASAP!!!!!!! Why is it possible that globalization will have a negative effect on Africa's economy?
Answer:
This is your answer ☺️☺️☺️
is this a complementary, or supplementary or neither?
Answer: Two angles are called complementary when their measures add to 90 degrees. Two angles are called supplementary when their measures add up to 180 degrees.
ill mark brainlist plss help
Answer:
multiply 0.15 times 26.40 which is $3.96 which is C $4 since they say ESTIMATE A 15% TIP
Step-by-step explanation:
The difference of two numbers is 19. Their sum is 27. Find the numbers
Answer:
23 and 4
Step-by-step explanation:
x-y=19
x+y=27
x=19+y
(19+y)+y=27
19+2y=27
2y=8
y=4
x-4=19
x=23
23+4=27
23-4=19
I’m struggling hardcore and I’m an online student!! I need this done by tomorrow but I am so confused on everything
Answer:
I'm but ask a assistant
Step-by-step explanation:
ok
The two triangles are similar. What is the value for the ? ? Round to the nearest tenth if necessary.
L 28 35° K J ? R 42 35° P 33
Answer:
KJ = 22
Step-by-step explanation:
From the given diagram, since the figure are similar we can compare their sides.
So that,
[tex]\frac{JL}{PR}[/tex] = [tex]\frac{JK}{PQ}[/tex]
Let KJ be represented by x. But;
JL = 28, PR = 42 and PQ = 33
Thus,
[tex]\frac{28}{42}[/tex] = [tex]\frac{x}{33}[/tex]
x = [tex]\frac{28*33}{42}[/tex]
= [tex]\frac{924}{42}[/tex]
= 22
x = 22
The n,
KJ = 22
Given that x and y vary inversely and that y is 8 when x is 2, what is the constant of variation, k?
Answer:
16
Step-by-step explanation:
the equation is x = k / y
therefore k = x* y
k = 2*8
k= 16
what is y
27 y + 5 = -9
Answer:
y = [tex]\frac{-14}{27}[/tex]
Step-by-step explanation:
27y + 5 = -9 -> subtract -9 and 5
(-9) - 5 = -14
27y = -14 divide 27 and -14
(-14)/27
You are then left with
y = [tex]\frac{-14}{27}[/tex]
Find the value of c such that the expression is a perfect square trinomial.
x^2+12x+c
Answer:
c = 36
Step-by-step explanation:
If the coefficient of [tex]x^{2}[/tex] is one, then c = [tex](\frac{12}{2}) ^{2} = 6^{2} = 36[/tex]
Easton is saving up to buy a new bicycle. He already has $15 and can save an
additional $8 per week using money from his after school job. How much total
money would Easton have after 5 weeks of saving? Also, write an expression that
represents the amount of money Easton would have saved in w weeks. HELP .
Step-by-Step:
Easton(E) has $15 bucks.
E = 5w+15
w = 8
5(8)+15 = m
m = Money
Easton has $55.
What is 91% of 180
Show all work and round answer to the nearest tenth.
this is a picture from a question in a math class last year :>
For a party Gary buys cheese pizzas for $5 and pepperoni pizzas for $8 each. His bill comes to $75. Let x represent the number of cheese pizzas and y represent the number of pepperoni pizzas. Write an equation to represent the situation.
Answer:
The answer is the second answer from the image. Which is 5x-8y=$75
Step-by-step explanation:
It is that answer because it costs $5 for one cheese pizza and $8 for a pepperoni pizza, so the answer is 5x-8y=75
still confused?
Its that answer because the first one and the third one are the same, just both equations like in different ways like example 10+2 is 12 right? And 2 + 10 is still 12 so that means the second answer from the image is the answer.
Hope that helps.
Answer:
the answer for this question is the first choice.
Step-by-step explanation:
first, let's figure what number represents what. we know that cheese pizzas gary bought costed him $5 and pepperoni pizzas costed him $8. since x represents cheese pizzas and y represents pepperoni pizzas, 5x and 8y should be correct. this is also said in the problem which gives the correct addends. for the operation, it tells us the bill COMES to $75. since the pizzas are COMING to $75 in total, we know that this is addition.
The volume of the cylinder is 225π cm3. What is the height of the cylinder?
A. 6.25 cm
B. 25 cm
C. 37.5 cm
D. 75 cm
Answer:
25
Step-by-step explanation:
it is i promiseee
PLZZZZZZ HELPP MEE
TY
Answer:
i'm not sure if this all correct
Step-by-step explanation:
part A you start at 8 from the first participant then you take away one from the last one. you add up all the numbers up to get the answer. 8+7+6+5+4+3+2+1=36.
part B the first part is 1x1x1x1x1x1x1x1=1. the second part is 8x7x6x5x4x3x2x1= 40,320. the third part is 1/40320
I need help please!
Ap calculus
9514 1404 393
Answer:
(c) 1.649
Step-by-step explanation:
For a lot of these summation problems it is worthwhile to learn to use a calculator or spreadsheet to do the arithmetic. Here, the ends of the intervals are 1 unit apart, so we only need to evaluate the function for integer values of x.
Almost any of these numerical integration methods involve some sort of weighted sum. For trapezoidal integration, the weights of all of the middle function values are 1. The weights of the first and last function values are 1/2. The weighted sum is multiplied by the interval width, which is 1 for this problem.
The area by trapezoidal integration is about 1.649 square units.
__
In the attached, we have shown the calculation both by computing the area of each trapezoid (f1 does that), and by creating the weighted sum of function values.
30 + a = 40, a = ?
(please answer)
Your answer is gunna be 10
Answer:
The answer is 10
Step-by-step explanation:
Move all terms not containing a to the right side of the equation.
~Hoped this helped~
~Brainiliest?~
which describes the function on the graph-below?
Answer:
The first one
Step-by-step explanation:
PLEASE HELP ME!! ill give brainliest.
Answer:
d-7=3
Step-by-step explanation:
Answer:
3dx7
Step-by-step explanation:
I hope this helps!:) Can I get brianlest plz?
Keep up the good work!