The equation x² - 4 = 0 and 4x² = 16 have roots of x = -2 and 2 so option 1st and 4th are correct.
What are the roots of an equation?Roots of an equation are the solution of that equation, since an equation consists of hidden values of the variable so to determine them by different processes and then the resultant is called roots.
For example root of x -4 = 0 is x = 4 so 4 will be the only root of this linear equation.
The number of roots of an equation depends on the degree of the equation for example number of roots of quadratic equation are 2.
Given the roots
01)
x = -2
square both sides
x² = 4
x² - 4 = 0
02)
x = 2
Square both sides
x² = 4
Multiply by 4 on each side
4x² = 16
Hence "The equation x² - 4 = 0 and 4x² = 16 have roots of x = -2 and 2".
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Someone help and plz make sure it’s right? :)
Answer:
Right
Step-by-step explanation:
It is right because every angle with 90° degree or with these shapes are called right angled traingle.
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How many grams are 7.00 x 1022 molecules of NaOH?
Answer:
46.5
explanation
6.022*10^23 molecules=40g.
7.00*10^23=40*7.00*10^23/6.022*10^23 g =46.5 g
Mole measure the number of elementary entities of a given substance that are present in a given sample. Therefore, 4.65g are 7.00 x 10²² molecules of NaOH.
What is mole?The mole is used to measure the quantity of amount of substance. It measure the number of elementary entities of a given substance that are present in a given sample.
we know one mole of any element contains 6.022×10²³ atoms which is also called Avogadro number
mole =given number of atoms ÷ 6.022×10²³(Avogadro number)
given number of atoms of NaOH= 7.00 x 10²² atoms
Substituting the values
mole=7.00 x 10²²÷ 6.022×10²³
mole =0.116 moles of NaOH
mass of NaOH= Molar mass of NaOH× moles of NaOH
= 40 × 0.116
= 4.65g
Therefore, 4.65g are 7.00 x 10²² molecules of NaOH.
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I NEED HELP FAST!!!! WILL GIVE BRAINLIEST.
Answer:
Step-by-step explanation:
Ok what’s the problem
if i made 80 dollars every weekend for a year, how much would i have
Answer: You would have 4160$
Step-by-step explanation: there is 52 weeks in a year so 52 times 80
Jill earns $56
(y) for 1 hour of
babysitting
each day for
a week (x).
Answer:
In a week, Jill will earn $392 if she babysits for 1 hour per day.
Step-by-step explanation:
Mr. Crawford put $4500 into bank at an interest rate of 3%. How much money will she have in the back after 5 years?
Explain please. Brainlist if correct.
Answer:
He will have $5175.
Step-by-step explanation:
3% of 4500 is 135. 135x5=675. Add 675 to 4500 which equals 5175.
A traffic camera sits on top of a tower that has a height of 39 ft. The angles of depression of a car on a straight road at the same level as that of the base of the tower and on the same side of the tower are 31°. Calculate the the distance between the base of the poll and the car. Round to the nearest tenth of a foot. *
Answer:
48ft
Step-by-step explanation:
Distance of car A from the towerConsider ∆ACD tan25 = 50/AC AC = 50/tan25 = 50/0.4663 = 107.2 ft Distance of car B from the towerConsider ∆BCD tan40 = 50/BC AC = 50/tan40 = 50/0.8391 = 59.6 ftDistance from cars A and B AB = AC – BC = 107.2 – 59.6 = 48 ft The distance between the two cars is 48ftWhat’s another name for line qr
rq
The order of the letters does not matter when referring to just a line
(4,6) rotated 90 degree
Answer:
(6,-4)
Step-by-step explanation:
when you have (x,y) and you want to rotate it 90 degrees, you would switch the x and the y and then make the x negative. So (4,6) would switch to (6,4) and then the 4 would become negative.
A population of 6000 bacteria is growing at a rate of 6% each day. Write 2 an equation that expresses the number of bacteria at time x.
A. y = 6000(.06)×
B. y = 6000(1.06)×
C. y = 6000(.94)×
Halfway through the third quarter, how much of the game is left?
Write the answer as a proper fraction,
PLEASEEE HELP ASAPPPP!!!!
Answer:
(-15,3) (2,-11) (-3,-7) (12,4)
Step-by-step explanation:
tell me if im wrong
NEED HELP FAST! The problem should be attached!
Answer:
(5,5) I think I'm not sure
Step-by-step explanation:
the volume of the cone is 25.12 the height is 6 what is the area of the base
Answer:
153.94
Step-by-step explanation:
AB=πr2=π·72≈153.93804
Answer:
The area of the base is 12.56 units squared.
Step-by-step explanation:
The volume formula of a cone is [tex]\pi r^{2} \frac{h}{3}[/tex]. To solve for the base area, just multiply the volume by 3 and divide by the height. 25.12 * [tex]\frac{3}{6}[/tex] = [tex]\frac{25.12}{2}[/tex] = 12.56 units squared.
125% of what number is 13
Answer:
udtdggufutrzdg kkhhx uttsjdiidi dgufigtxtx
Percentage' is obtained by multiplying 13 by 125%
125% of 13 is equivalent to multiplying them:
125% × 13 = ?
125% × 13 =
(125 ÷ 100) × 13 =
(125 × 13) ÷ 100 =
1,625 ÷ 100 =
16.25
p explanation:
The mean of a set of numbers is 8, and the mode is 9.
Which of the following sets of numbers do these values describe?
3, 7, 9, 9, 10, 14
1, 5, 8, 10, 11, 13
4, 6, 8, 9, 9, 12
3, 5, 7, 9, 12, 12
Answer:
C
Step-by-step explanation:
Help on this one to ??
Answer:
64
Step-by-step explanation:
I need the answers pls
ffggddaafvvcgghv de ryhvg
Please help!!:(( I’ll give the best answer the brainliest :)
(and of y’all can please stop with the links it’s not working)
The quadrilateral SMUG on the coordinate plane has the following characteristics.
SM can be represented by the equation x+4y = 7 where 3 <_ x< _ 7
UG can be represented by the equation why equals 1/4x - 5/2 where 2<_x <_ 6
Part A: graph the figure represented by the information given above
Answer:
Step-by-step explanation:
If y varies directly with x according to the relationship y = kx, and y = 7.5 when x = 2.5, determine the constant of variation k.
Answer:5
Step-by-step explanation:
Can someone please help me answer this question asap thank you . No links please and thank you .
A balloon has a circumference of 16 cm. Use the circumference to approximate the surface area of the balloon to the nearest square centimeter.
804 cm2
326 cm2
256 cm2
81 cm2
Answer:
The answer is 256 cm 2.....
Help
Please !!!,!,!,!,!!
Answer:
700cm
2450cm
40cm
6991cm
Step-by-step explanation:
Times ten for every one.
What is a characteristic of a rational number? A) it will always repeat B) it will always terminate C) it can be written in a fraction form D) it must be a while number
Answer:
I think its a bc I took ze test and its right
Step-by-step explanation:
Sorry if its wrong
Can someone help me with this pattern:
Sweet Time Bakery just opened and is increasing the number of items they bake. For example, the bakery made 1 carrot cake in January, 4 carrot cakes in February, 16 carrot cakes in March, and 64 carrot cakes in April. If this pattern continues, how many carrot cakes will the bakery make in May?
Answer:
256
Step-by-step explanation:
Rule:*4
1*4=4
4*4=16
16*4=64
64*4=256
I hope this helps!
The following list shows how many brothers and sisters some students have: 3, 4, 3, 5, 6, 2, 5, 4, 5, 4, 6, 5, 3 State the mode.
{y= -1-3x
{y + 3x = 3
Answer:
No Solution.
Step-by-step explanation:
y=-1-3x
y+3x=3
------------
-1-3x+3x=3
-1=3
no solution
someone help me with this plss
HELP DUE IN 60 MINS!
1. Slope of HE =??
2. Slope of GF =??
3. Slope of HG =??
4. Slope of EF =??
Answer:
Use coordinates of the vertices and the slope formula.
H(-3, 0), E(1, 4), F(3, 2), G(-1, -2)1. Slope of HE:
m = (4 - 0)/(1 + 3) = 12. Slope of GF:
m = (-2 - 2)/(-1 - 3) = 13. Slope of HG:
m = (-2 - 0)/(-1 + 3) = -14. Slope of EF:
m = (2 - 4)/(3 - 1) = -1An item on sale costs 55% of the original price. The original price was $35.
need asap
Answer:
$19.25
Step-by-step explanation:
55% of 35 is 19.25