Answer:
the answer is 20
Step-by-step explanation:
let the number be "x"
1st part = 2/5of x
2nd part = 1/4 of x
=) 2/5 x - 1/4 x = 3
=) lcm of 4 ,5 is 20
=) ( 2x * 4 ) - ( 1x *5) by 20 =3
=) 8x - 5x / 20 =3
=) 3x / 20 =3
=) 3x = 3 *20
=) 3x = 60
=) x = 60 /3
=) x = 20
the number is 20
Answer: 20
Step-by-step explanation:
2/5x -1/4x = 60
Multiply by 20 on both sides,
8x - 5x = 60
3x = 60
x = 60/3 = 20
QUESTION 3 (3 points)
Convert the following quadratic into standard form. Show all work.
f(x) = 3(x - 5)² - 40
Answer:
3x^2- 30x+35=f(x)
Step-by-step explanation:
3(x^2+25-10x)-40
3x^2+75-30x-40
3x^2- 30x+35=f(x)
What is the product?
(5 r + 2)(3 r minus 4)
15 r squared + 8
15 r squared minus 8
15 r squared + 14 r minus 8
15 r squared minus 14 r minus 8
Answer:
The answer would be the last one
_________________________________
Solution
(5r+2)(3r-4)
=5r(3r-4)+2(3r-4)
=15r^2-20r+6r-8
=15r^2-14r-8
So the right answer is 15 r squared minus 14 r minus 8.
Hope it helps
Good luck on your assignment
______________________________
In ΔEFG, the measure of ∠G=90°, FG = 5.1 feet, and GE = 7.7 feet. Find the measure of ∠F to the nearest tenth of a degree.
Answer:
∠F=56.5⁰
Step-by-step explanation:
It forms a right angled triangle.
The base of the triangle is given as 7.7 feet
The perpendicular of the triangle is given as 5.1 feet.
Find ∠E where
tan∠E=perpendicular/base
tan∠E=7.7/5.1
∠E=33.518
Find ∠F by substracting ∠G and ∠E from 180,
∠F=180-90-33.518
∠F=56.482
Round off to nearest tenth
∠F=56.5
I need help with congruence and similarity problem. ( picture below)
Answer:
x = 9, y = 4 and z = 6.67
Step-by-step explanation:
Since both the polygons are similar, by the property of similarity corresponding sides of the polygons will be proportional.
Therefore, [tex]\frac{x}{6}=\frac{12}{8}[/tex]
x = [tex]\frac{12\times 6}{8}[/tex]
x = 9
Similarly, [tex]\frac{10}{z}=\frac{12}{8}[/tex]
z = [tex]\frac{10\times 8}{12}[/tex]
z = [tex]\frac{20}{3}[/tex] = 6.67
And [tex]\frac{6}{y}=\frac{12}{8}[/tex]
y = [tex]\frac{8\times 6}{12}[/tex]
y = 4
Therefore, x = 9, y = 4 and z = 6.67 will be the values.
The product of 7 × b is less than 7 but greater than 0.
b>____
b<____
Pleasee
Answer:
b<1 b>0
Step-by-step explanation:
7b<7
b<1
7b>0
b>0
Are my answers correct?
Answer:
Step-by-step explanation:
1. it is an equilateral triangle.
let base=2x
let h be the height from centre.
h/8=sin 30=1/2
h=1/2×8=4
so total height=8+4=12
again x/8=cos 60
x=(√3/2)×8=4√3
Base=2x=2×4√3=8√3
area of triangle=1/2×8√3×12=48√3 sq. units.
2.
one diagonal=3+8=11
second diagonal=5+5=10
area=1/2 d1d2=1/2×11×10=55 sq units
A horizontal line has points J, K, L. A line extends from point K up and to the right to point M. Angle J K M is (10 y + 6) degrees and angle M K L is (8 y minus 6) degrees
What is the value of y?
y =
Find the following angle measures.
mAngleJKM = °
mAngleMKL = °
Answer:
The found values are:
y = 10
<JKM = 106°
<MKL = 74°
Step-by-step explanation:
(See the diagram attached)
As JKL is a straight horizontal line, angle measure from JK to KL is 180°.
We can see in the diagram that line KM is dividing this angle of 180° into 2 unequal parts.
Which means that the sum of <JKM and <MKL is equals to 180°.
Mathematically, it can be written as:
[tex]<JKM+<MKL=180^\circ\\\\[/tex]
Substitute the values of both angle to solve the equation:
[tex](10y+6)+(8y-6) = 180\\18y=180\\y=\frac{180}{18}\\y=10[/tex]
Put in the formulas of both angle to find their values:
<JKM = 10y + 6
<JKM = 10(10)+6
<JKM = 106°
<MKL = 8y - 6
<MKL = 8(10)-6
<MKL = 74°
Answer:
y = 10
<JKM = 106°
<MKL = 74°
Step-by-step explanation:
True or false cause I honestly forgot
Answer:
false
Step-by-step explanation:
5 cant be put into 2
Answer:
not a function
Step-by-step explanation:
Since one input goes to two different outputs, this is not a one to one correspondence, then this is not a function
pls answer for brainliest!!! thank you
Answer:
$6 per week, $600 total
Step-by-step explanation:
$30 total divided equally by 5 weeks = $6 per week. She will rase $6 per week.
After she raises $30 more, her total will be $200. Since her father and mother will also match her total they will both give $200.
$200+$200+$200 (Father+mother+Jane)=$600 total by the family
have a nice day :)
Mr. Smith paid $36.36 for a carpet. This amount includes a tax of 10%. What was the cost of the carpet before tax?
Answer:
32.72
Step-by-step explanation:
36.36/100
0.3636
0.3636 times 90 (I use 90 because 100-10=90) 10% tax, so 90% original cost.
32.72
Identify a transformation of the function f(x) = sqrt(x) by observing the equation of the function g(x) = sqrt(x) + 1
Answer:
up 1
Step-by-step explanation:
The plus one is on the outside so it is up the number which is one
-3x-10=32 Icouldn't find the answer.
Answer:
x = -14
Step-by-step explanation:
-3x - 10 = 32
Add 10 on both sides
-3x = 42
divide both sides by -3 to isolate x
x = 42/-3
x = -14
Answer: -14
Step-by-step explanation:
-3x - 10 = 32
-3x = 32 + 10
x = -42/3 = -14
Name the types of angles shown.
Check all that apply.
Answer:
Here you go!
Step-by-step explanation:
There is a 90 degree angle,
An obtuse angle
And an acute angle
Right angle (EFH)
Acute angle(GFH)
Point O is the center of dilation. Triangle X Y Z is dilated to create triangle X prime Y prime Z prime. The length of O Z is 2 and the length of Z Z prime is 4. The length of side X prime Y prime is 9 and the length of side Y prime Z prime is 12. Triangle XYZ was transformed by DO,3. What is the length of side XY? 1.5 4.5 3 18
9514 1404 393
Answer:
3
Step-by-step explanation:
The image of line XY is 9 units after dilation by a factor of 3, so the original length of XY is 9/3 = 3.
Answer:
short answer middle picture :)
Step-by-step explanation:
Three shirts and two pairs of pants cost $40. Four shirts and one pair of pants cost $37.50. How much does one shirt cost?
A. $5.00
B. $9.50
C. $6.75
D. $7.00
Answer:
d, 700
Step-by-step explanation:
it's the only one that makes sense
Which statement can be represented by the equation 18+m-7.2?
A number, m, less than 18 is seven point two.
Eighteen decreased by a number, m, is seven point two.
A number, m, divided by 18 is seven point two.
Eighteen divided by a number, m, is seven point two.
Answer:
Eighteen decreased by a number, m, is seven point two.
Step-by-step explanation:
18+m=7.2
m=7.2-18
m= -10.8
18+(-10.8)
18-10.8=7.2
Eighteen decreased by a number m is seven point two
The statement that can be represented by the equation 18+m = 7.2 is eighteen decreased by a number, m, is seven point two.
HOW TO ANALYZE WORD PROBLEM?Word problem are used in mathematical solutions to create a word out of mathematical expressions and vice versa.
According to this question, the following expression is given: 18+m = 7.2
The mathematical expression can also be written as m = 7.2 - 18
Therefore, the statement that can be represented by the equation 18+m = 7.2 is eighteen decreased by a number, m, is seven point two.
Learn more about word problems at: https://brainly.com/question/468645
What are the values of a, b, and c in the quadratic equation –2x^2 + 4x – 3 = 0?
Answer:
a.-2
b.4
c.-3
Step-by-step explanation:
write a,b,c on top of each number to the left of the =0
Answer:
The values are: a ; (-2) b ; (4) c ; (-3)
Step-by-step explanation:
The quadratic equation is: ax^2+bx+c = 0
So, you can get your answers by using that.
what is the relationship between angles 6 and 7
Answer: D; vertical angles
Step-by-step explanation: We could conclude thee are vertical angles because of the same measurement of each we could also see that they correspond each other and are therefore similar angles.
Concluding, that the answer would be D; vertical angles
Hope this helps
<3
-Carrie
P.S. It would mean a lot if you marked brainliest
Need help AsAp WIll give brainlist!!!
Answer:
-5
Step-by-step explanation:
Score in first round = +15
Scores lost in second round = -30
Score in third round = 10
Total points = 15+-30+10= -5
plz do them both since ur here now
Answer:
19 is d 26 is c 27 is b
Step-by-step explanation:
an aircraft carrier made a trip to guam and back. the trip took three hours and the trip back took 4 hours. it averaged 6 km/h on the return trip. find the average speed of the trip there
Answer:
8 kilometers per hour.
Step-by-step explanation:
1-If you multiply the hours of the trip back (which is 4 hours) and the kilometer per hour (6 km/h) you will get 24.
2-Do the same thing with the trip there and you will get 3 hours multiplied by *blank* equals 24.
3-the blank is 8 kilometers per hour. And I wrote equal 24 to mean that the distance to Guam was 24 kilometers.
1. Trevor's fitness trainer recommends that Trevor drink 8 fluid ounces
of water 8 times a day. Trevor has a water bottle that holds 1 1/4 pints
of water when filled. Today, he has filled the water bottle three times
and drank all of the water each time. Trevor claims that he drank the
total amount of water recommended by his fitness trainer. Explain
why Trevor's claim is not true. (Remember 8 ounces = 1 cup; 2 cups
1 pint)
=
Answer: Trevor drinks 3 3/4 pints against his coach's 4 pints
Step-by-step explanation:
8 ounces per day x 8 times = 64 ounces = 8 cups = 4 pints
Water bottle holds 1 1/4 pints x 3 = 3 3/4 pints.
suppose that g(x) = f (x - 2). which statement best compares the graph of g(x) with the graph of f(x)?
Answer:
The graph of G (x) is the graph of f(x) shifted 2 units to the left.
The graph of G (x) is the graph of f(x) shifted 2 units to the left.
Graph:For any kind of the parent function f(x) the graph of the transformed function should be g(x) = f(x +a)
It is a shift of the parent function f(x) also it should be either to the left or the right based on the value of a.
In the case when a>0 so the shift is 'a' units to the left
and if a<0 so the shift is 'a' units to the right.
Therefore, we can conclude that The graph of G (x) is the graph of f(x) shifted 2 units to the left.
It is an incomplete question. Kindly find the options below.
A. the graph of G(x) is the graph of F(x) shifted 2 units to the right B thr graph of G(x) is the graph of F(x) shifted 2 units down C the graph of G(x) is the graph of F(x) shifted 2 units up D the graph of G (x) is the graph of f(x) shifted 2 units to the left
Learn more about graph here: https://brainly.com/question/19661552
Find the slope of the line that passes through the given points.
(9,1) and (9,5)
The answer is 4/0 or indefinite.
Please see the attached picture for full solution
Hope it helps
Good luck on your assignment
There are 8 students in our Math class left to give their presentations. Today
we will have time for 5 presentations. How many different ways can the
teacher choose the presenters?
OA) 56
OB) 112
OC) 168
OD) 336
Answer:
Option A. 56
Step-by-step explanation:
The question talks about chosing 5 presenters out of 8 presenter.
This can be achieved b using the following formula:
nCr = n! /r! (n–r)!
n = 8
r = 5
8C5 = 8! / 5! (8 – 5)!
8C5 = 8! / 5! 3!
8C5 = (8 x 7 x 6) / (3 x 2 x 1)
8C5 = 56
Therefore, there are 56 ways in which the teacher can chose the presenters.
Answer: Choice A
Step-by-step explanation:
Find last year's salary if, after a 4 % pay raise, this year's salary is $ 33,280.
Answer:
32000
Step-by-step explanation:
1.04x=33280
32000
using special right triangles, solve for x.
Answer:
6*sqrt(3)
Step-by-step explanation:
x, 2x, x*sqrt(3)
12is 2x
the x side is x*sqrt(3)
(12/2)*sqrt(3)=x side
x side = 6*sqrt(3)
ANSWERR ASAPP!!! I GIVE BRAINLIESTT!!
just tell me if I'm correct
Answer:
Yes you are correct for x AND y
Step-by-step explanation:
Yes, your answer is correct.
If the bill is $47.96 and you leave a 15% tip, what is the tip amount?
Answer:
7.19 is the tip
Step-by-step explanation:
Take the amount of the bill and multiply by the tip percentage
47.96 * 15%
Change to decimal form
47.96 * .15
7.194
Round to 2 decimal places
7.19
Answer: $7.19
Step-by-step explanation:
15/100 = 0.15
We only want the tip, not the total cost:
Do 0.15 * $47.96 to get about $7.19
Which system type is a linear system with infinitely many solutions?
A. Consistent dependent
B. Inconsistent
C. Consistent independent
D. Inconsistent dependent
Answer: C
Step by step explanation-
Answer:
A
Step-by-step explanation:
It is consistent dependent system , since:
inconsistent has no solutions
consistent independent has one solution,
while...
consistent dependent means that two linear functions are merged into a single line, and they always cross, giving an infinite number of solutions to the linear system
