Answers
Answer:
±5 is your answer
Step-by-step explanation:
x²-25=0
comparing above equation with ax²+bx+c
we get
a=1
b=0
c=-25
by using quadratic equation
x=(-b±√(b²-4ac))/2a=(-0±√(0²-4×1×-25))/2×1
=±{√(100)}/2=±(√10²)/2=±10/2=±5
Answer:
5, - 5
Step-by-step explanation:
x^2 = 25
x = ± √25
= ± 5
x = 5, - 5
Related Questions
Solve the equation graphically :-
4x-3y = 0
2x + 3y -18 = 0
Answers
What is this number in standard form? (3×100)+(1×1/10)+(4×1/1,000) Enter your answer in the box. please help fast . im panicking . btw it has to be decimal form
Answers
Answer:
300.104
Step-by-step explanation:
I posted a photo what the difference between expanded and standard form.
Hope this helped
2. The length of Manny's pool is 7 times as the width increased by 4. What is the area, in
feet, of Manny's pool?
Answers
Answer:
L=7w+4
Step-by-step explanation:
we do not know a width to give an exact answer in numbers
Solve this equation:
-5(x - 2) - 3x = -80
Answers
Answer:
x=45/4
Decimal Form:
x=11.25
Mixed Number Form:
x=11 1/4
Step-by-step explanation: PLEASE MARK ME BRANLIST AND IF U CAN ANSWER MY QUESTION FROM MY PROFIL WOULD BE NICE.
HAVE A GREAT DAY! ❤️
Can somebody help me solve for x?
Answers
Answer:
x = 18
Step-by-step explanation:
80 / 48 = 30 / x
80x = 1440
x = 18
1.N% of 40 is 10. Solve for N. Just put the number.
2.Mia finished 60% of her homework in 45 minutes. how many minutes will it take her to complete all of her homework? Remember her total homework is 100%
Answers
Step-by-step explanation:
N% of 40=10N/100×40=10
N=10×100/40=25
2.
60%of homework=45min
1%of homework=45/60=3/4min
100%of homework =3/4 ×100=75 min
Which pairs of expressions below are equivalent? A9m+4m13m2 B2(3m−4n)6m−4n C7(2m−3n)14m−21n D5m+5n+5m+5n5(m+n)
Answers
Answer:
7(2m−3n)14m−21n
Step-by-step explanation:
The following pairs are equivalent
7(2m - 3n)
14m - 21n
If you solve 7(2m - 3n)
So
7(2m) - 7(3n)
14m - 21n
So according to the given options, the option c is correct as this pairs is to be considered as equivalent
Here is a trapezium, work out its area
Answers
So the overall area is 30 cm^2
pls help , will mark branliest
A
C
B
ZABC is a right angle which is bisected by
BD.
mZDBC = [?]°
Answers
The Measure of <DBC is 45 degree.
What is Line Bisector?When anything is divided into two equal or congruent portions, usually by a line, it is said to have been bisected in geometry. The line is then referred to as the bisector. Segment bisectors and angle bisectors are the sorts of bisectors that are most frequently taken into consideration.
Given:
<ABC = 90 degree
As, BD is bisector for < ABC.
Then, the bisector divides the angle <ABC in two equal parts.
So, <ABC = 2< ABD = 2<BDC
<DBC = 1/2 <ABC
<DBC= 45 degree
Learn more about Line Bisector here:
https://brainly.com/question/2425077
#SPJ2
What is (-3)^-9 times (-3)^5
Answers
Answer:
1/80 or 0.01234568
Step-by-step explanation:
Exponentiation: (-3) ^ (-9) = -5.08052634253E-5 = -1/
19683
Exponentiation: (-3) ^ 5 = -243
= -1/
19683
* (-243) = -1 · (-243)/
19683 · 1
= 243/
19683
= 1 · 243/
81 · 243
= 1/
81
The credit remaining on a phone card (in dollars) is a linear function of the total calling time made with the card (in minutes). The remaining credit after 38 minutes of calls is $ 25.06, and the remaining credit after 69 minutes of calls is $21.03. What is the remaining credit after 80 minutes of calls?
Answers
Answer: $19.6
Step-by-step explanation:
Linear function: f(x)=mx+c
, where m= rate of change in f(x) with respect to x.
c = Initial value.
Let c = Initial value of card , m= Charge per minute
x= Number of minutes calling time.
Then, 25.06= 38m+c (i)
21.03=69m+c (ii)
Eliminate (ii) from (i)
[tex]4.03=-31m\\\\\Rightarrow\ m=\dfrac{4.03}{-31}\\\\\Rightarrow\ m=-0.13[/tex]
Put m in (i) , we get
[tex]25.06= 38(-0.13)+c\\\\\Rightarrow\ 25.06=-4.94+c\\\\\Rightarrow\ c=25.06+4.94\\\\\Rightarrow\ c=30[/tex]
i.e. f(x)=-0.13x+30
if x=80 then
f(80)= -0.13(80)+30
=-10.4+30
=19.6
Hence, the remaining credit after 80 minutes of calls = $19.6
In ΔXYZ, x = 24 inches, y = 43 inches and z=47 inches. Find the measure of ∠Y to the nearest 10th of a degree.
Answers
Answer:
29.2
Step-by-step explanation:
arctan=24/43
Answer:
The correct answer is 65.5
Step-by-step explanation:
Just took a test on DeltaMath.
help me please this is very important to me for rbainlist and explain
Answers
Answer:
Step-by-step explanation:
The probability of getting one even and one odd is the sum of probability of getting even and of getting odd and even. Since there are 3 even or odd on each die out of six numbers you have
P(EO)(3/6)(3/6)=1/4 and P(OE)=(3/6)(3/6)=1/4 so 1/4+1/4= 1/2
or you can find the probability of getting two odds or two evens and subtract that from 1
P(EE)=(3/6)(3/6)=1/4, P(OO)=(3/6)(3/6)=1/4
P(EO)=1-1/4-1/4=1/2
Suppose that y varies directly with x and inversely with z. If y = 63 when x =
27 and z = 3, find the constant of proportionality.
Answers
Answer:
constant of proportionality = 7
Step-by-step explanation:
Let k = constant of proportionality
If y varies directly with x and inversely with z, then [tex]\frac{yz}{x} = k[/tex]
Substitute the values given into the equation and you get [tex]\frac{(63)(3)}{27} = 7 = k[/tex]
B. Find the Least Common Multiple (LCM) of the following sets of numbers.
15. 12 and 5
11. 8 and 3
12. 9 and 15
13.
14.
6 and 4
10 and 12
Answers
24
45
12
60
Hope this helped
Answer:
11. LCM of 12 and 5 = 60
12.LCM of 8 and 3 = 24
13.LCM of 9 and 15 = 90
14.LCM of 6 and 4 = 12
15.LCM of 10 and 12 = 60
Please helpASP hurry please and ty
Answers
45+56+39 = 140
45/140 is about 1/3
in a standard deck of cards, what is the probability that you would draw an ace
Answers
Answer:
innate as an agent X or something else
Step-by-step explanation:
Answer:
8%
Step-by-step explanation:
Suppose you have a deck of 52 cards, 4 of which are aces. The chances of drawing an ace from this deck are 4/52≈8%.
Whoever receives this get's the brainliest crown all you have to say is 1st
Answers
Answer:
1st
Step-by-step explanation:
Suppose that a desk and a chair together weigh at most 55 pounds. The weight of the chair is 17 pounds. Which inequality correctly describes these conditions for the weigh of the desk, d?
Answers
Answer:
The answer will be C
Step-by-step explanation:
Rewrite the equation y – 4x = –9 in slope-intercept form. simple explanation and proof
Answers
Answer:
y=4x-9
Step-by-step explanation:
add 4x to both sides to isolate y
Answer:
The slope-intercept form of this equation would be y = 4x - 9.
(For explanation look down below)
Step-by-step explanation:
Slope-intercept form would be an equation that would look like...
y = mx + b
Where m is the slope and b is the intercept. From this form, we can understand that all we need to do is rearange the formula in a way that positive y would be on its left side. And so we get...
y - 4x = - 9
y - 4x + 4x = - 9 + 4x
y = 4x - 9
Write an equation of the line that passes through the points (0, −2) and (3, −5) .
Answers
Answer:
i might be wrong but i think it is
Step-by-step explanation:
y
=
−
x
−
2
y=-x-2
Please help due today
Answers
PLZ HELP ITS DUEEE RNNNNN!!!!
Answers
Answer:
left: all three attributescenter: not a rectangleright: not a rectangleStep-by-step explanation:
Some relevant characteristics of different quadrilaterals are ...
trapezoid: one pair of parallel sidesparallelogram: opposite angles are congruent, diagonals bisect each otherrectangle: a parallelogram; and all angles are congruent, diagonals are the same length__
a.There are two angles marked as right angles, and the remaining two angles are marked as congruent. The sum of angles in a quadrilateral is 360°, and each right angle is 90°. The only way the remaining angles can be congruent is for them to be (360° -180°)/2 = 90° each. That is, all of the angles in this figure must be congruent. It is ...
quadrilateralparallelogramrectangle__
b.Opposite angles are marked congruent. There is nothing to indicate any angle is a right angle. The figure is ...
quadrilateralparallelogram__
c.The diagonals are marked as bisecting each other. There is nothing to indicate the diagonals are the same length, or that any angle is a right angle. The figure is ...
quadrilateralparallelogram
The local grocery store sets a bag of dog food for $22. The store pays $13 for the dog food. Which oquation can be used to find the markup on the dog food? Options: A. X+9=13 B. X+13=22 c. X-9=22 d. X-22=13
Answers
Answer: The answer is b
Step-by-step explanation:
11,900 divided by 34
Answers
Have a nice day!!
Deandria spent $22 on 11 song downloads. How much did each song cost?
Answers
Answer:
2 dollars on each
Step-by-step explanation:
2 times 11 equals 22
Answer:
Each song costed $2.00
Step-by-step explanation:
If all song downloads cost the same, then each song download costs...
22 / 11 = 2
There the cost per 1 download is $2.00
The radius of a circle is 13 meters. What is the circle's area?
Answers
Answer:
530.66 m²
Step-by-step explanation:
The equation to find a circle's area is [tex]\pi[/tex][tex]r^{2}[/tex]. We just need to plug in the radius.
[tex]\pi[/tex][tex]13^{2}[/tex]
= 3.14*169
= 530.66
Hope this helps you and have a great day! o(*^v^*)o
ANSWER FOR BRAINIEST
Answers
to find a line that is perpendicular, invert the slope and multiply by -1
so the original slope is -2/3,
invert it to get -3/2 then multiply by -1 to get 3/2
put the given point (-2,-2) and the new slope into point intercept form: y+2=3/2(x+2)
rewrite in standard form to get y=3/2x+1
Which of the following ordered pairs is not in the solution set of y < 2x − 5
Answers
Answer:
(4,3)
Step-by-step explanation:
Solve the equation:
3<2(4)-5
3<8-5
❌3<3 ❌
3 is not less than three, hence this is the phony
i hope this helps!
if m1=2x° and m3=3x° what is m1
Answers
Answer:
36
Step-by-step explanation:
Using the angle addition postulate
angle 1+angle 2+angle 3=180
Angle 2 is 90 degrees,
Angle 1 is 2x degrees
Angle 3 is 3x degrees
Plug this into equation
[tex]2x + 90 + 3x = 180[/tex]
[tex]5x + 90 = 180[/tex]
[tex]5x = 90[/tex]
[tex]x = 18[/tex]
Plug 18 into 2x
[tex]2(18) = 36[/tex]