Answer:
k = 2 √ 19 , − 2 √ 19
Step-by-step explanation:
Take the root of both sides and solve.
Answer:
± 8.7178 or ± the square root of 19
Step-by-step explanation:
Solve : k2-76 = 0
Add 76 to both sides of the equation :
k2 = 76
When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:
k = ± √ 76
Can √ 76 be simplified ?
Yes! The prime factorization of 76 is
2•2•19
To be able to remove something from under the radical, there have to be 2 instances of it (because we are taking a square i.e. second root).
√ 76 = √ 2•2•19 =
± 2 • √ 19
The equation has two real solutions
These solutions are k = 2 • ± √19 = ± 8.7178
A train traveled at 62 miles per hour for 7.5 hours. How far did the train travel in 7.5 hours? Use the formula D = r x t
d=distance
r=rate
t=time
Answer:
465 miles
Step-by-step explanation:
D = r * t
D = 62 * 7.5 = 465 miles
Answer:
465
Step-by-step explanation:
We know that the rate is 62 mph. The time is 7.5 h.
Plug it into the existing equation:
D = r × t becomes D = 62 × 7.5
Just stick that into a calculator to get 465.
In induction you can form an educate guess or ____ about a pattern you have found
A. Congruence
B. conjuctuion
C. conjugation
D. conjucter
Answer:
A
Step-by-step explanation:
Answer:
The answer is C - conjugation
Hope this helps!
The number of girls in a classroom is greater than the number of boys. There are more than 2 girls. Write a system of inequalities to model this situation. Use x to represent the number of boys and y to represent the number of girls.
Answer:
x < y > 2
Step-by-step explanation:
Girls is more than boys, so:
y > x
Girls is more than 2, so:
y > 2
So:
x < y > 2
I hope this helps you :)
Does anyone know know the correct answer?! Please help! If the answer is correct ill mark you as the best!
Answer:
D)
Step-by-step explanation:
In slope-intercept form in order to find the perpendicular equation you change the sign and find its reciprocal.
So in the equation y= -3x+1, the opposite sign of - is + and the opposite of 3 is 1/3
How to solve y=2x-10 and 6x+7y=10 using substitution
Answer:
x=4
Step-by-step explanation:
y=2x-10 and 6x+7y=10
6x+7(2x-10)=10
6x+14x-70=10
20x=80
x=4
HELP QUICK PLEASE !!
Given: AABC with vertices A(5, -2), B(5, -7), and C(1, -2). Which set of
coordinates best repositions the triangle to make a coordinate proof easier?
Answer:(0,0),(0,4) and (5,0)
Step-by-step explanation:
It is easy to find lengths of horizontal and vertical segments and distances from (0,0) so always place one vertex at the origin and one or more sides on an axis.
So this answer has a y intercept and an x intercept.
Which piecewise function is shown in the graph?
Answer:
A
Step-by-step explanation:
why would i lie to you
ILL MARK BRAINLIEST IF FAST
Select the correct answer.
Which table represents a linear function that has a greater unit rate than that of the function y = 200x + 50?
Answer:
D
Step-by-step explanation:
A unit rate is basically which one increases more as time goes on. Now. to make it easier let me explain visual.
You have 50 apples at the start and every hour you get 200 more apples, sweet!
Now let's look at the chart.
The first one is 200x+100, this is wrong since this has a better start but you don't get as much apples.
Same goes for the B and C. The only one that would make sense is D since you're also adding 10 more apples for each one you increase.
why am i smart
esfcobqagd
Answer:
Because you pay attention in school. Thank you for the points!!
Step-by-step explanation:
Is “12.95 x 10^4” a Scientific Notation? Yes or No? Explain.
Answer:
Yes
Step-by-step explanation:
Scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8. and that is something Very similar.
Hope this helps!
Have a nice day!
If you find my answer helpful
Pls consider marking my answer as Brainliest! It would mean a lot!
help me please it's due at 2:30
Answer:
i have the same doubt
Step-by-step explanation:
explain how multiplying 4/10 and 3/10 is similar to multiplying 0.4 and 0.3 (please only answer if you for sure know the answer!!)
Jay wants to buy a book for $8.00. The sales tax is 6%. How much will Jay pay for the book including tax?
Answer: $8.48
Step-by-step explanation: 8x.06 = .48 +8 = $8.48
I WILL MARK BRAINLIEST!!!
The product of a number and negative three is twenty-seven. Which of the following could represent this statement?
-3n + 27
-3(27) = n
-3n = 27
-3 = 27n
Answer:
-3n=27
Step-by-step explanation:
The value of n is -9.
So we can represent this in an equation. We won't get that as a result if we multiply the following
-3n=27 Divide -3 by both sides.
n=-9
Answer:
The product of a number and negative three is twenty-seven.
-3n=27
pls help 10 minutes left to submit everything is on the image below
Answer:
a. 5
b. 1
c. 132
d. -2
Step-by-step explanation:
a. The square root of 4 is 2, the absolute value of -3 is 3. 2 + 3 = 5
b. 4 - (-3) / -7 = 7/ -7 = 1
c. 2 * 4^3 = 128 + (-3) - (-7) = 132
d. 2 (-7 + 3) = -8, square root to the third power of -8 is -2
I hope this helped, please mark Brainliest, thank you!!
Find the value of X while a⊥B and b║c
6x + 21y = 103
-6x + 23y = 51
Serena paid $24.60 for 7 and 1/2 gallons of gasoline. What is the cost per gallon of gasoline?
Answer:
The cost would be $3.28 for each gallon.
equivalent ratio to 2:5
Answer:
4:10
8:20
16:40
1:2.5
Step-by-step explanation:
Which statements about angles and geometric figures are true? Check all that apply.
An acute angle and an obtuse angle always form a straight angle.
An obtuse angle has a measure less than 90 degrees.
The sum of the interior angles of a quadrilateral is 360°.
The sum of the interior angles of a triangle is 180°.
A right angle has a measure of 90°.
A triangle can have two right angles.
Answer:
c,d,e
Step-by-step explanation:
Just took it and edge
Answer:
C, D, E.
Step-by-step explanation:
I got the answer on edge
Determine whether the lines with the given slopes are parallel, perpendicular, or neither.
m1= 1/2 & m2= 0.5
Answer:
The given lines are parallel.
we already know that for parallel condition we apply;
m1=m2
1/2=0.5
0.5=0.5
Find the percent change from 200 to 192.
Answer:
4% change
Step-by-step explanation:
find the area of the regular hexagon PQRSTU of sides 8 cm as shown in the figure
Answer:
Area = 245m^2
Step-by-step explanation:
We can split this figure into 2 parts, a rectangle and a trapezoid.
Rectangle Sides = 10m and 20m
Area = 10m x 20m = 200m
Trapezoid formula = a+b/2(h)
a and b are the 2 bases and h is the height
Using a little deductive reasoning we get the following, 5+10/2(6)
This simplifies to 15/2(6) -->
7.5(6) = 45
Thus, our area is 200 + 45, or 245m^2
7) The height of a box is represented by the expression
(x.- 2) centimeters. The volume of the same box is
represented by the expression (x3 - 8 ) cubic centimeters.
Which expression below represents the area of the base of the
box?
A. x2 – 2x + 4
B. x2 + 2x + 4
C. X? + 6x - 4
D. x2 - 6x + 4
Given:
Height of box = (x-2)
Volume of box = [tex](x^3-8)[/tex]
To find:
The expression for the base area.
Solution:
We know that,
Volume of a box(V) = Base area(B) × Height(h)
[tex]V=Bh[/tex]
[tex]\dfrac{V}{h}=B[/tex]
On substituting the given values, we get
[tex]B=\dfrac{x^3-8}{x-2}[/tex]
[tex]B=\dfrac{x^3-2^3}{x-2}[/tex]
[tex]B=\dfrac{(x-2)(x^2+2x+2^2)}{x-2}[/tex] [tex][\because a^3-b^3=(a-b)(a^2+ab+b^2)][/tex]
[tex]B=x^2+2x+4[/tex]
So, the base area is [tex]x^2+2x+4[/tex].
Therefore, the correct option is B.
Given the equation x^2=16, which statement below describes the solution(s)?
Answer:
4
Step-by-step explanation:
x²=16
x=√16
x=4
Answer:
x^2=16
^ stands for power or exponent
so, the equation is: x square= 16
for this x should be equal to 4
now,
4^2=16
Step-by-step explanation:
Can someone please actually help me with my math assignments
Ratio number 1.50:1.38
How to do this question plz
Answer:
Aproximately 25 days
Step-by-step explanation:
so he goes 15.12 mph and rides for 8 hours so 15.12*8=120.96
3069.25/120.69
=25.374091 round it to nearest whole number so its 25days
pls try and show work due today
Answer:
Step-by-step explanation:
you start from 2 on the y axis and then go up 4 and right 3 so it will take you to coordinate point (6,3) then you start from 2 on the y axis again and go down 4 and left 3
Linear pairs definition?
Answer:
A linear pair is two adjacent angles whose sides that are not common form a straight line.
Step-by-step explanation:
