Answer:
30Step-by-step explanation:
to understand the stepsyou need to know about:system of linear equationword problemsPEMDASfirst step
let's create the equation word problem
my mother's current age is four times the sum of the ages of my two sisters. After 5 years, my mother's age will be double the sum of the ages of my two sisters. What is the current age of my mother? (imaginary problem)let's solve
let my mother's and sister's age be x and y respectively
according to the first condition,x=4y....(I)
according to the 2nd condition,x+5=2(y+5×2).....(ii)
so the system of linear equations is
x=4y
x+5=2(y+5×2)
gets from the second equation
x+5=2(y+10)
x+5=2y+20
4y+5=2y+20 (as x=4y)
2y=15
y=7.5
so the age of mother is
x=4.(7.5)
x=30
Please help it’s the last question I have left until I can turn this in please answer ASAP if possible
Answer:
i cant see
Step-by-step explanation:
1. w.w.w=
2. 2.2.y.y.y.y=
3. 45% of 325=??
4. -4+(-6)+(-10)+16=
Yeah, I know its alot u could say but I pretty much forgot how to solve theses problems specifically...
Answer:
w³ ; 4y⁴ ; 146.25 ; - 4
Step-by-step explanation:
Solve the following :
1. w.w.w ;
w * w = w² * w = w^3
2. 2.2.y.y.y.y ;
4 * y^4 = 4y^4
3. 45% of 325=??
0.45 * 325 = 146.25
4. -4+(-6)+(-10)+16=
Opeing the bracket :
-4 - 6 - 10 + 16
-20 + 16
= - 4
What is the distance between (-7, -2) and (13,-23)
Step-by-step explanation:
here,
x1=-7
x2=13
y1=-2
y2=-23
so
[tex]\boxed{\blue{ distance=\sqrt{(y2-y1)^2+(x2-x2)^2} }}[/tex] ⠀
=[tex]\tt{\sqrt{(-23-(-2))^2+(13-(-7))^2}}[/tex] ⠀
=[tex]\tt{\sqrt{(-21)^2+(20)^2} }[/tex] ⠀
=[tex]\tt{\sqrt{ 441+400} }[/tex] ⠀
=[tex]\tt{\sqrt{841} }[/tex] ⠀
=[tex]\tt{ 29 }[/tex] ⠀
So,
the distance between (-7, -2) and (13,-23)=29
Find the slope represented in the table below
please helelspnssbsb
Answer:
I haven't learn this yet but maybe try asking desmos that app helps me a lot!
A rowing club has 600 members. 60% of them are women. After 200 new members joined the club, the percentage of women was reduced to 50%. How many of the new members are women?
Point G (-2,-3) is reflected across the y-axis, what are the coordinates of new point?
PLEASE HELP ME PLZ PLZ PLZ
Answer:
4
Step-by-step explanation:
pythagoras theorem = a* + b* = c* ( by '*' i mean squared)
2* + b* = square root twenty
4 + b* = 20
b* = 16
b = 4
Pleaseeeee answer correctly !!!!!!!!!!!!!!!!! Will mark Brianliest !!!!!!!!!!!!!!!!!!
Answer:
A and B
Step-by-step explanation:
Jimmy is selling used books at a yard sale. A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill. Jimmy must determine c, the amount of change in dollars he should give the customer. Which equation represents c?
20 minus 0.75 c = 9
20 minus 0.75 = 9 c
0.75 (9) + c = 20
0.75 c + 9 = 20
Answer:
c
Step-by-step explanation:
Answer: immy is selling used books at a yard sale. A customer buys 9 books at a cost of $0.75 each and pays with a $20.00 bill. Jimmy must determine c, the amount of change in dollars he should give the customer. Which equation represents c?
20 minus 0.75 c = 9
20 minus 0.75 = 9 c
0.75 (9) + c = 20
0.75 c + 9 = 20
C / 0.75 (9) + c = 20
Step-by-step explanation:
To find your change, first you must determine how much the customer is paying. To find this, you must multiply the cost of one book by the number of books bought.
just number 15 please
Which of the following is a Pythagorean triple?
A. (3,4,6)
B. (5,8,10)
C. (5, 12, 13)
D. (1,1,2)
Answer:
C. 5,12,13
Step-by-step explanation:
5^2 + 12^2 = 13^2
25 + 144 = 169 this is a true equation therefore a triple
Please help. i need help.
Answer:
y = 4 - 2x
Step-by-step explanation:
sorry dont have the steps
Find the axis of symmetry for the equation in vertex form. y=(x+2)^2+1
What is the slope of the line that passes through the points (6, -5) and (6, -8)?
I need help again, but I did it step by step and I want to make sure it is the correct answer. Please help, thxs!!
Answer:
13!
Step-by-step explanation:
I hope I'm right and I hope it helps! *If I'm wrong again that would be really embarrassing.*
Tamika finds a new pair of boots that she wants to buy. They originally cost $99, but
they are now on sale for 25% off. What is the discounted price?
Answer:
$74.25
Step-by-step explanation:
$99.00x75%
x^1/2 + 1 is it a poynomial? explain
Answer:
I think so!
Step-by-step explanation:
Because any Expression that has 1 or more terms is a polynomial
help me math problem
Answer:
A it is definitely A if not i am finna go bleach my eyes
Step-by-step explanation:
442 x 308 show your work please
I will give brainliest to best answer
Please find the value of b for 1, 2, and 3.
The area of a rectangle is 14 square units. It has side lengths a and b. Given the following values for a, find b.
1. a = 2 1/3 (two and one third)
2. a = 4 1/5 (four and one fifth)
3. a = 7/6 (seven sixths)
Answer:
1. B= 6
2. B= 3.333333333
3. B= 12
Step-by-step explanation:
1. 14/ 2 1/3 (two and one third)=6
2. 14/ 4 1/5(four and one fifth)= 3.333333333
3. 14/ 7/6 (seven sixth)= 12
Mr Willkinson invests £3000 at a compound interest of 2.2% per anum
he wants his investment to earn more than £800 interest
work out in the least time in years it will take
THANKS 30POINTS :)
Answer:
13 years which = to 858 in intrest
Step-by-step explanation:
Answer:
= 13 years
Step-by-step explanation:
Good luck guys!! Hope you get your answer correct!!
**THIS SHOULD GET YOU A FEW MARKS ANYWAYS (IF NOT FULL)
Solve: 35 dollars per day to dollars per week.
Answer:
35*7=$245
Step-by-step explanation:
Linear or nonlinear
Will mark brainliest hurry
Answer:
I can’t see the picture but I can help
Step-by-step explanation:
If the line is straight then its linear if not then nonlinear
what is 6/5 of 3792????????? PLEASE HELP ME
Answer:
4550.4 ?
Step-by-step explanation:
I'm not sure tho dddd
find the value of x.
Answer:
x = [tex]\sqrt{87}[/tex]
Step-by-step explanation:
if you draw a perpendicular segment from the vertex between sides 5 and 16 to the opposite side then you have a right triangle and can use the Pythagorean Theorem, a² + b² = c²
a = x
b = 13 (you get this from 18 - 5)
c = 16
x² + 13² = 16²
x² + 169 = 256
x² = 87
x = √87
90 kg in the ratio 2:3:7
Answer:
15:22.5:52.5
Step-by-step explanation:
2:3:7=2+3+7=12
90 divided by 12 is 7.5
multiply each factor by 7.5
2-15
3-22.5
7-52.5
please mark as brainliest!!<3
Answer:
15 : 22.5 : 52.5
Step-by-step explanation:
2+3+7 = 12units
To find how much kg one unit is.
90kg ÷ 12units = 7.5kg/unit
2units : 7.5 x 2 = 15kg
3units : 7.5 x 3 = 22.5kg OR 22/1/2 kg
7units : 7.5 x 7 = 52.5kg OR 52/1/2 kg
Therefore, the answer is
15 : 22.5 : 52.5
The curved surface area of a right circular cylinder of height 14 cm is 88 cm2. find the diameter of the base of the cylinder
Answer:
2 cm
Step-by-step explanation:
h = 14 cm
Curved surface area of a right circular cylinder = 88 cm²
2πrh = 88
[tex]2 * \frac{22}{7}*r*14=88\\\\r = \frac{88*7}{2*22*14}\\\\ r =1 \\\\r = 1 cm[/tex]
Diameter = 2 * r = 2 * 1 = 2 cm
The diagonal length of a rectangle is 25 inches, and the length of the rectangle is 9 inches.
Which measurement is closest to the width of this rectangle in inches?
PLS NEED HELP I WILL FAIL PLSSS ILL MARK BRAINLIEST!!!!
A) 15.8
B) 16
C) 23.3
D) 34
Answer:
i believe it is a or b i am more sure that it is b
Answer:
C
Step-by-step explanation:
the product of a number and nine
9x
Step-by-step explanation: