Answer:
28, let me know if you got it right
Charles buys 10 drinks and 3 sandwiches for $34. Isabel buys 5 drinks and 4
sandwiches for $37. They want to determine the cost of each item.
Write a system of linear equations to model the problem. Let d equal the cost
of each drink and let s equal the cost of each sandwich. Solve the system
algebraically. How much does each item cost?
PLEASE ANSWER ASAP CAUSE THIS QUIZ IS DUE SOON
Line R is represented by the following equation: x + y = 2
Which equation completes the system that is satisfied by the solution (1, 1)?
2x + y = 2
4x - 2y = 2
2x - 2y = 2
x + y= 4
Answer:
4x-2y=2
Step-by-step explanation:
Line R is represented by the following equation:
x+y=2
We need to choose another system of equation of x+y=2
whose solution is (1,1)
The equation must be satisfy the point (1,1)
Option 1: 2x+y = 2
Put x=1 and y=1
2(1)+1 = 3
3 ≠ 2
False
Option 2: 4x-2y=2
Put x=1 and y=1
4(1) - 2(1) = 2
2 = 2
True
Option 3: 2x-2y=2
Put x=1 and y=1
2(1) - 2(1) = 0
0 ≠ 2
False
Option 4: x+y=4
Put x=1 and y=1
1+1 = 2
2 ≠ 4
False
Hence, The system of equation is 4x-2y=2
If x=6 and y=−2, evaluate the following expression:2xy
Step-by-step explanation:
[tex]2(6)( - 2) = \\ = 2( - 12) = \\ = - 24[/tex]
9x-12=3x show your work
Answer:
x=2
Step-by-step explanation:
given 9x-12=3x we want to solve for x
To do so we need to isolate the variable using inverse operations
to get rid of the 9x we subtract each side by 9x
9x - 9x cancels out
3x - 9x =-6x
now we have
-12=-6x
now we want to get rid of the -6
to do so we divide each side by -6
-6x/-6=x
-12/-6=2
we're left with x=2
Answer:
9x=3x+12
9x-3x=12
9x-3x=12
6x=12
x=2
solution
x=2
NEED THIS SOLVED ASAP PLS HELP ME!!!
Answer:
x= 1 ±√21/3
x= 2.52753
x= - 0.527525
Step-by-step explanation:
-(-6) ±√-6² - 4 (3) (-4) / 2(3)
6±√36 -(-48) / 6
6±√84/6
6±2√21/6
6/6 ±2√21/6
1±√21/3
1+ √21/3 = 2.52753
1-√21/3= - 0.527525
Step-by-step explanation:
[tex]3x ^{2} - 6x - 4 = 0[/tex]
[tex]by \: quadratic \: formula[/tex]
[tex](-b±√(b²-4ac))/(2a) [/tex]
[tex] - ( - 6)±√( - 6²-4(3)( - 4) /(2 \times 3) [/tex]
[tex](6±√(36 + 48)/(6) [/tex]
[tex](6±√(84)/(6) [/tex]
[tex](6±2√21)/6[/tex]
[tex]2(3±√21)/6 [/tex]
[tex]3±√21/3[/tex]
[tex]let \: \alpha \: and \: \beta \: be \: two \: roots \: .[/tex]
[tex]3 + \sqrt{21} /3[/tex]
[tex]3 + 4.58/3[/tex]
[tex]7.48/3[/tex]
[tex]2.52[/tex]
[tex]and \: second \: root \: = 3 - \sqrt{21} /3[/tex]
[tex]3 - 4.58/3[/tex]
[tex] - 1.58/3[/tex]
[tex] - 0.52[/tex]
[tex]so \ \: alpha = 2.52 \: and \: \beta = - 0.52[/tex]
GUYS I NEED HELP ASAP!!
I believe this is correct! Good luck :)
Theoretical Probability:
P(rolling a 2) = 16.7%
P(rolling a 5) = 16.7%
P(rolling 2 or 3) = 33.4%
P(greater than 4) = 33.4%
P(3 or less) = 50.1%
Experimental Probability:
P(rolling a 2) = 20%
P(rolling a 5) = 6%
P(rolling 2 or 3) = 36%
P(greater than 4) = 24%
P(3 or less) = 54%
Explanation:
Theoretical probability can be calculated based on the idea that each of the six numbers on the die has an equal chance of being rolled and all numbers' probabilities total to 100%. Experimental probability is based on the outcomes of your experiment (rolling the dice yourself).
When finding the probability of rolling a number or another number (for example, rolling a 2 or 3), just add the probabilities together (You rolled 2 ten times and 3 eight times, so the experimental probability of rolling a 2 or 3 is 18/50 = 36%)
Please help ASAP! I'll give brainliest!
Answer:
Step-by-step explanation:
Answer:
Hey, do you want to roleplay
Step-by-step explanation:
I can't solve, sorry.
Kara is sorting buttons by length for a craft project.The line plot shows of each button.If kara lines up all the 3/4 inch buttons What would be the total
Required picture attached below :
Answer:
2 1/4 inches
Step-by-step explanation:
From the line plot Given ;
The frequency or number of 3/4 inch button is 3
Therefore, lining up all the 3/4 inch button in the plot, we have :
3/4 + 3/4 + 3/4
(3 + 3 + 3) /4
9 /4
2 1/4 inch
pls helpppppppppqjhg
Answer:
Step-by-step explanation:
It is the 3rd or 1st one.
Ryan garden is 20 yards wide. there are about 0.914 meters in 1 yard. About how many meters wide is Ryan's garden? (Decimal number only)
Answer:
the answer would be 18.28
Step-by-step explanation:
if you times 0.914 x 20
which would make 20 yards
because 0.914 is only 1 yard
Simplify the expression using the distributive property. 2(3x -5) Can you show the work too please thank you!!!!
Answer:
6x-10
Step-by-step explanation:
2(3x-5)
2*3x 2*-5
6x-10
A square pyramid has a base length of 4 inches. The height of each triangular face is 12 inches. What is the surface area of the pyramid?
Answer:
The surface area of the given pyramid is 112 [tex]inches^{2}[/tex].
Step-by-step explanation:
Base length of the pyramid = 4 inches
Area of the base = [tex]length^{2}[/tex]
= [tex]4^{2}[/tex]
= 16
Area of its base = 16 [tex]inches^{2}[/tex]
Area of one of its triangular surface = [tex]\frac{1}{2}[/tex] x base x height
= [tex]\frac{1}{2}[/tex] x 4 x 12
= 2 x 12
= 24 [tex]inches^{2}[/tex]
Area of all its four triangular surfaces = 4 x 24
= 96 [tex]inches^{2}[/tex]
surface area of the pyramid = sum of areas of all its surfaces
= 16 + 96
= 112 [tex]inches^{2}[/tex]
The surface area of the given pyramid is 112 [tex]inches^{2}[/tex].
Deondra surveyed 240 of the students in her school about their favorite color.
Students could choose between purple and blue. 15% said their favorite color was
blue. How many students' favorite color was purple?
Answer:
the answer is 180 students.
Step-by-step explanation:
I got this by subtracting 15 by 100 and got 75. This means 75% chose purple. Then you take 75% of 240 and that's your answer
Answer:
204
Step-by-step explanation:
ok
help a b outttttttt please
Answer:
The two numbers are 9 and 11
Find the measure of ∠b. A. 61 B. 39 C. 54 D. 44
Answer:
39??
Step-by-step explanation:
Given the first term and common ratio: Find the 10th Term. The first term is equal to 1 and the common ratio is
equal to -2.
Answer:
-512
Step-by-step explanation:
The appropriate general formula for a geometric series is a(n) = a(1)*r^(n - 1).
In this problem the first term, a(1) = 1, and the common ratio is r = -2. The pertinent geometric series is thus:
a(n) = (-2)^(n - 1), and the 10th term is a(10) + (-2)^(10 - 1) = -512 = a(10)
What is the missing side length of the pyramid if the volume is 1,026 cubic inches
Answer:
18
Step-by-step explanation:
(b) If the median of the following data is 40, write down
the class where the median lies.
Answer:
maximum- median
80-50=30
5 is what percentage of 10 question: now do I divide 5 divided by 10 equals 0.5 then do I multiply 0.5 by 100 or divide 0.5 by 100?
Answer:
50%
Step-by-step explanation:
5 question is what percentage of 10 question
Step 1: Divide 5 by 10
5/10 = 0.5
Step 2: multiply 0.5 by 100
0.5 × 100
= 50%
Therefore, percentage of 5 questions out of 10 questions is 50%
Answer:
50%
Step-by-step explanation:
5 is half of 10
50 is half of 100
Determine whether y=9(−5)x represents an exponential function.
Sarah biked 13 miles south from her house to the library. Then she turned and biked 10 miles
east to the grocery store. Finally, she returned home using a straight path. What was the total
distance she traveled?
Answer:
16.40
Step-by-step explanation:
use Pythagorean theorem
find two numbers that have the given product and the given sum 12,8
Answer:
What?
Step-by-step explanation:
2 of 5
Given that a = 2.6 cm, and b = 10.8 cm, work out 2.
Give your answer rounded to 1 DP.
b
a
The diagram is not drawn accurately.
==
cm
What is 2?
the question is not clear
30 POINTS
what is the right answer
Answer:x≥−5
Step-by-step explanation:
Find the value of x in each triangle
Answer:
Step-by-step explanation:
The sum of a triangle’s angles is always 180 degrees so
x+x+25=180
2x+25=180
2x=155
x=77.5 degrees
Please help ASAP !!!!
Answer:
AB(12, -8)?
Step-by-step explanation:
I think that's it but I haven't done something like this in a hot minute. If it's wrong I'm sorry
What is the distance between points (5,2) and (1,-3) on the coordinate plane?
Answer:
6.403124
Step-by-step explanation:
Find the equation of the exponential function represented by the table below:
x у
0 0.01
1 0.02
2 0.04
3 0.08
Answer:
y = 0.01 * 2ˣ
Step-by-step explanation:
f(x) = xⁿ
0: 0.01 = 0.01 * 2⁰ = 0.01 * 1 = 0.01
1: 0.02 = 0.01 * 2¹ = 0.01 * 2¹ = 0.02
2: 0.04 = 0.01 * 2² = 0.01 * 2² = 0.04
What is the volume of a cylinder,in cubic feet,with a high of 5 feet in a base diameter of 10 feet?Round to the nearest tenth place
Answer:
390.7ft³ is the answer
(3x^4=2x+1)-(2x^4-3x+5)