Answer:
Randy is 48 years old
Sandy is 12 years old
Todd is 27 years old
Step-by-step explanation:
Given
Represent their ages with the first letters of their names:
[tex]R + S + T = 87[/tex]
[tex]R = 4 * S[/tex]
[tex]T = 15 + S[/tex]
Required
Determine their individual ages
We'll solve the above equations using substitution method of simultaneous equations
Substitute 15 + S for T and 4 * S for R in [tex]R + S + T = 87[/tex]
This gives:
[tex]4 * S + S + 15 + S = 87[/tex]
[tex]4 S + S + 15 + S = 87[/tex]
Collect Like Terms
[tex]4 S + S + S = 87 - 15[/tex]
[tex]6S = 72[/tex]
Divide through by 6
[tex]S = 72/6[/tex]
[tex]S = 12[/tex]
This implies that Sandy is 12 years old
Substitute 12 for S in [tex]R = 4 * S[/tex] and [tex]T = 15 + S[/tex]
[tex]R = 4 * 12[/tex]
[tex]R = 48[/tex]
[tex]T = 15 + 12[/tex]
[tex]T = 27[/tex]
This implies that Randy is 48 years old and Todd is 27
I need some help and fast
Solve this plz
Answer:
It could be or 70 or 78
Step-by-step explanation:
Answer:
there the same they are both 84
Step-by-step explanation:
PLEASEEEEE HELPPPPPP ASAPPPPP
The correct answer is 9 or option D:)
bro this is eazy if i get it right give me brainliest
Answer: 9
Describe the transformation that moved the Red-figure to the Blue figure.
A) Rotate 90 degrees clockwise about the origin
B) Rotate 90 degrees counterclockwise about the origin
C) Reflect over the x-axis
D) Translate 2 units up
Which ordered pairs in the form (x, y) are solutions to the equation 3x−4y=21?
Select each correct answer.
(−3, 3)
(7, 0)
(−1, −6)
(11, 3)
plz help what is 6 x 18 plz show work thank
Answer:
the answer is 108.
Step-by-step explanation:
6 x 18 = 108
i need help with this ASAP
Answer:
There are sixteen 15-cent stamps and eight 20-cent stamps.
Step-by-step explanation:
Stamp collector has:
15c stamps
20c stamps
Total value is $4
x($0.15) + y($0.20) = $4.00
The # of 15c stamps is 8 - than 3 * the # of 20c stamps; 15c = 8 - 3c
x = 3y - 8
(3y-8)(0.15)+y(0.20) = $4.00
0.45)y-1.20+(0.20)y = 4.00
(0.65)y-1.20 = 4.00
(0.65)y = 5.20
y = 8
x = 3(8)-8 = 16
There are sixteen 15-cent stamps and eight 20-cent stamps.
Check:
16($0.15)+8($0.20) = $2.40+$1.60 = $4.00
Which expression is represented by this model?
14×13=112
13×12=16
14×16=124
14×12=18
Answer:
the first one
Step-by-step explanation:
hope i helped
Answer:
a
Step-by-step explanation:
pls give brianleist
Need help with this
(I think it’s 49 but I’m not sure)
Answer:
Its 49
Step-by-step explanation:
Can i get brainliest
Justin reads
5/8 chapters in 4/5
hours.
What is the unit rate in chapters per hour?
Write your answer in simplest form.
20 points to person
The unit rate in chapters per hour is 1/2.
What is multiplication?In mathematics, multiplication is a method of finding the product of two or more numbers. It is one of the basic arithmetic operations, that we use in everyday life.
here, we have,
Justin reads 5/8 chapters in 4/5 hours.
the unit rate in chapters per hour is = 5/8÷4/5
=5/8×4/5
=1/2
Hence, the unit rate in chapters per hour is 1/2.
To learn more on multiplication click:
brainly.com/question/5992872
#SPJ2
What graph shows the linear equation y = 1?
Answer:
I don't see a picture; where are the graphs?
Madison is a high school basketball player. How many points would Madison score in a game if she made 8 free throws (worth one point each) and 6 three point shots?
How many points would Madison score in a game if she made x free throws and y
three point shots?
Answer:
26 and 1x+3y on Delta math
Step-by-step explanation:
Explanation:
Each free throw scores 1 point, so 8 free throws would score 1\times 81×8 or 8 points. Each three point shot scores 3 points, so 6 three point shots would score 3\times 63×6 or 18 points. Therefore, the total number of points Madison would score is 26.
Answer:
3?
Step-by-step explanation:
i need helpppp again
Answer:
2/7b + 10
Step-by-step explanation:
What is the binary number for 13
Step-by-step explanation:
[tex]13=8+4+1=2^3+2^2+2^0=\bold1\cdot2^3+\bold1\cdot2^2+\bold0\cdot2^1+\bold1\cdot2^0\\\\13_{10}=1101_2[/tex]
Answer:
♡ hola, madi here ♡
- 1101 is the answer.
hope your thanksgiving is amazing.
know your loved & make sure to
hug a loved one today.ʕ ꈍᴥꈍʔ
✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧
Step-by-step explanation:
What is the range of: 21, 35, 17, 27, 32, 12 and 30
Answer:
Please mark as brainliest!!
Step-by-step explanation:
range = maximum value -minimum value
35-12=23
Find the value of X
PLEASE
Answer:
x ≈ 18
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesTrigonometry
Law of Cosines: a^2 = b^2 + c^2 - 2(b)(c)cosA
a is a side lengthb is a side lengthc is a side lengthA is an angle corresponding with side aStep-by-step explanation:
Step 1: Define
a = x
A = 30°
b = 16
c = 30
Step 2: Solve for x
Substitute: x² = 16² + 30² - 2(16)(30)cos30°Exponents: x² = 256 + 900 -2(16)(30)cos30°Evaluate: x² = 256 + 900 -2(16)(30)(√3/2)Multiply: x² = 256 + 900 - 480√3Add: x² = 1156 - 480√3Subtract: x² = 324.616Isolate x: x = √324.616Evaluate: x = 18.0171Round: x ≈ 18He cafeteria at Midtown Middle School surveyed 575 students about their favorite food. If 8% of the students surveyed liked chicken, how many students said that chicken is their favorite food?
Answer:
46.08 students said that chicken is their favorite food.
Step-by-step explanation:
Let X denote the number of students who liked chicken.
The proportion of students who liked chicken is, p = 0.08.
About n = 576 students were surveyed about their favorite food.
Every student's answer was independent of the others.
Thus, the random variable X follows a binomial distribution with parameters n = 576 and p = 0.08.
The probability mass function of X is:
[tex]P(X=x)={576\choose x}(0.08)^{x}(1-0.08)^{576-x};\ x=0,1,2,3...576[/tex]
Then expected number of students who said that chicken is their favorite food is:
[tex]E(X)=np\\\\=576\times0.08\\\\=46.08[/tex]
Thus, 46.08 students said that chicken is their favorite food.
Darius sees a new store advertising 10 of the same packs of paper clips for $41.50. Which statement best describes the strategy Darius should use to get the best price for each pack?
Answer:
$4.150/packStep-by-step explanation:
Given the price of 10packs as $41.50, we can express it as;
10 packs = $41.50
To get the equivalent price of 1 pack, we will say;
1 pack = $x
Solving both equalities for x;
10 packs = $41.50
1 pack = $x
cross multiply
10 * x = 1 * 41.50
10x = 41.50
Divide both sides by 10
10x/10 = 41.50/10
x = 4.150
Hence the price for each pack is $4.150
Factor completely...I need help with my algebra 2 assignment!
median of 27,29,18,25,32,21,26
Answer:
arranging the data in ascending order :-
18, 21, 25, 26, 27, 29, 32
hence, the median is = 26
I need help, algebra is hard
Answer: C
Step-by-step explanation:
I think this one is it?
Answer:
c
Step-by-step explanation:
escribi los rsultados de cada cálculo como una exprecion decimal.
a)5+1/10+4/100=
b)1+5/10+7/100+5/1.000=
c)3/10+4/1.000=
POR FA NECESITO AYUDA ES PARA HOY
Answer:
a) 257/50 or 5.14
b) 657/100 or 6.57
c) 43/10 or 4.3
Step-by-step explanation:
Espero que esto ayude y que tengas un gran día! :). When 12 is subtracted from 4 times a number, the result is 24. Which equation can be used to find the number?
Answer:
12 + 24 divided by 4
Step-by-step explanation:
12 + 24 is 36, so divide that by 4, that gives you the answer, which is 9
The equation that represents the situation is 12 - 4x = 24. Then the solution of the equation will be negative 3.
What is the solution to the equation?The allocation of weights to the important variables that produce the calculation's optimum is referred to as a direct consequence.
When 12 is subtracted from 4 times a number, the result is 24.
Let the number be 'x'. Then the equation is given as,
12 - 4x = 24
Simplify the equation, then we have
12 - 4x = 24
- 4x = 24 - 12
- 4x = 12
4x = - 12
x = - 12 / 4
x = - 3
The equation that represents the situation is 12 - 4x = 24. Then the solution of the equation will be negative 3.
More about the solution of the equation link is given below.
https://brainly.com/question/545403
#SPJ6
The pair of points lies on the same line with the given slope. Find x.
(4,6). (x, 12); slope = 2
Answer:
x=7
Step-by-step explanation:
I got this because it is rise over run
[tex]\frac{rise}{run} =\frac{6}{?} =2[/tex]
The missing number would be 3, and if you add that three to 4 you get 7. which means that the answer is...
(7,12)
Hope this helps you!!!Find the value of x. *
Please help me.
Answer:
x=50
Step-by-step explanation
The two angles add up to 180, so 2x+4+76 = 180
2x+80=180
2x=100
x=50
Harry and Selma start driving from the same location. Harry drives 42 miles north and Selma drives 144 mies east. How far apart are Harry and Selma when they stop?
Answer:
150 miles
Step-by-step explanation:
use the pythagoerean theorem
42^2 + 144^2 = c^2
1764+20736=c^2
22500 = c^2
c= 150 miles
Question 8 of 10
If a point is on the bisector of an angle, then it is:
A. on one side of the angle.
B. the vertex of the angle.
C. equidistant from the two sides of the angle.
D. equidistant from the bisector and one side of the angle.
Pls and thank you
Answer:
yr point is A
Step-by-step explanation:
If a point is on the bisector of an Angle , then it is equidistant from two sides .
The Meaning of Bisector is to divide something or anything into two equal Halves.
The Meaning of Bisector of any Angle means to divide that Angle into two equal Parts.
Option A
equidistant from the two sides of the angle.
i jst taken the quiz
Answer:
equidistant from the two sides of the angle.
Step-by-step explanation:
E=RIGHT FOR AP-EX
bund to the nearest tenth
2. 84 is 60% of what number?
What is that answer
Answer:
140
Step-by-step explanation:
84/140 = 60/100
Mikaila collected 27 pounds of glass bottles to bring to the recycling center. she also collected 400 ounces of newspapers and 160 ounces of aluminum cans. what is the total weight of the items Mikaila brought to the recycling center? write your answer in ounces. think you❤!
Trigonometry ( help a girl out)
Resolving Vectors
Find the components of a car’s displacement if it travels 250 miles at an angle of 45 degrees north of west.
Answer:
4.587
Step-by-step explanation:
Write 178/48
as a percent.
Answer:
370.83%
Step-by-step explanation:
Divide them, and then multiply by a hundred.