Hi please help i am stuck with this question i will mark for brainliest
And 100. Point
Answers
Answer: 9
Step-by-step explanation:
First solve the system (using elimination):
x-y=7...(1)
3x+2y=26...(2)
Multiply equation 1 by -3
-3x+3y=-21
+ 3x+2y=26
-----------------
5y=5
y=1
Substitute y=1 into equation 1
x-y=7
x-(1)=7
x=8
Let a=8 (x=a) and y=1 (y=b)
a + b
= (8) + (1)
= 9
Information provided with us :
x is assumed as a y is assumed as bWhat we have to calculate :
Value of a + b ?Performing Calculations :
Here we have been given with two equations,
x - y = 7 (First equation) 3x + 2y = 26 (Second equation)From the first equation we would be getting a value of x and that value of x we would substitute in the second equation.
⇒ x - y = 7
⇒ x = 7 + y
Now, substituting it in the second equation :
⇒ 3x + 2y = 26
⇒ 3 (7 + y) + 2y = 26
⇒ 3 × (7 + y) + 2y = 26
⇒ 21 + 3y + 2y = 26
⇒ 21 + 5y = 26
⇒ 5y = 26 - 21
⇒ 5y = 5
⇒ y = 5 / 5
⇒ y = 1
★ Therefore, value of y is 1.
Now, substituting this value of y as 1 in the first equation.
⇒ x - y = 7
⇒ x - 1 = 7
⇒ x = 7 + 1
⇒ x = 8
★ Therefore, value of x is 8.
Value of a + b :-
⇒ x = a = 8
⇒ y = b = 1
Now,
⇒ a + b
⇒ 8 + 1
⇒ 9
Henceforth, value of a + b is 9.
Related Questions
An analogue clock is gaining three minutes every hour.If you set it to the correct time at 6 p.m. in Saturday,when will it show the correct time again?
Answers
Answer:
The correct time will be shown again at 6pm on Monday
Find the area and perimeter.
A^2 b 3a^2 a^2 4b
Answers
Answer: Area - 17a^2 b, Perimeter - 10a^2 + 10 b
Step-by-step explanation:
To find the area, we can divide the figure into 3 separate rectangles.
Then, we find the area of each separate rectangle and add them together.
Area = a^2b + a^2b + 15a^2b
Area = 17a^2 b
The perimeter is the sum of all sides
Perimeter = a^2 + b + 3a^2 + b + a^2 + 4b + 5a^2 + 4b
Perimeter = 10a^2 + 10 b
Plzzzzzz help meeeeee
Answers
Answer:
C
Step-by-step explanation:
The picture
**i would appreciate it if someone helped! ** Here is a number pyramid puzzle.
Fill in each blank with a number so that every number
is the product of the two numbers directly below it.
Answers
Answer:
*
Step-by-step explanation:
- 96
-8 12
- 4 2 6
4 -1 -2 -3
16 .25 -4 .5 -6
Each circle along with the number to be filled in it is mentioned below.
What is a Number Sequence?Number sequence is a progression or an ordered list of numbers governed by a pattern or rule.
Given is a pyramid puzzle.
The rule to be followed in order to complete this pyramid is as follows "Every number is the product of the two numbers directly below it".
Fill Circle [1] with the number 72.
Fill Circle [2] with the number 6.
Fill Circle [3] with the number 3.
Fill Circle [4] with the number 6.
Fill Circle [5] with the number 0.75.
Fill Circle [6] with the number -2.
Fill Circle [7] with the number 16.
Fill Circle [8] with the number 3.
Fill Circle [9] with the number -6.
Therefore, each circle along with the number to be filled in it is mentioned above.
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The graph of y = x2 – 4 is shown... What are the solutions to x2 – 4 = 0?
Answers
Solition for [tex]x^2-4=0[/tex] is [tex]\pm2[/tex]
Ans: x₁=-2; x₂=2
If I multiply my age in six years' time by three, the resulting age is my mother's age now. If my
mother is currently 48 years old, how old am I?
Answers
Answer:
I think 30
Step-by-step explanation:
I don't know I could be wrong
Answer:
10
Step-by-step explanation:
let your current age be x.
mother's age=48
3(x+6)=48
3x+18=48
3x=30
x=10
What is the domain of the function on the graph?
5
A. all real numbers
4+
3
B. all real numbers greater than or equal to -2
C. all real numbers greater than or equal to -5
all real numbers greater than or equal to 0
2+
i
1
5 4 3 2 11
1
2.
3
4 5
x
-2
-3
ov
-4
Answers
You can solve it by yourself only as no graphs attached.Steps provided below
First locate the starting pair of co-ordinates on function.Mark that
.If a. pair be (x,y) x is domain and y is range.Do same and find end points.Now unite both using interval notation
Darlene is making a quilt that has alternating stripes of regular quilting fabric and sateen fabric. She spends $76 on a total of 16 yards of the two fabrics at a fabric store. Sateen fabric costs $6 per yard and quilting fabric costs $4 per yard. Which system of equations can be used to find the amount x (in yards) of regular quilting fabric and the amount y (in yards) of sateen fabric she purchased?
Answers
Answer:
[tex]\left \{ {{6x+4y=76} \atop {x+y=16}} \right.[/tex]
Step-by-step explanation:
1) if (according to the condition) the amount of quilting is 'x' and the amount of sateen is 'y', then the price of the quilting fabric is 6*x and the price of then sateen fabric is 4*y;
2) the 76$ she spends can be written as 6x+4y=76;
3) total of 16 yards can be written as x+y=16;
4) finally, the required system is:
[tex]\left \{ {{6x+4y=76} \atop {x+y=16}} \right.[/tex]
A system of equations is a collection of two or more equations with a same set of unknowns. 4x+6y=76, x+y=16 are required system of equations.
What is system of Equations?A system of equations is a collection of two or more equations with a same set of unknowns.
According to the condition the amount of quilting is 'x' and the amount of sateen is 'y', then the price of the quilting fabric is 4x and the price of then sateen fabric is 6y;
the 76$ she spends can be written as 4x+6y=76;
Total of 16 yards can be written as x+y=16;
So the required system of Equations is:
4x+6y=76
x+y=16
Hence Option C is correct. 4x+6y=76, x+y=16.
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Just need help with the problems that have X’s next to them.
Answers
Answer:
Here's the ones I got so far
Step-by-step explanation:
38% of 250 = 95
7.5(3 * 7 + 4) = 187.5... x = 7
28 + x > 42... X can be 67, 96, 54
380 / 5 = 76 each hour
3 gallons of gas for 1 hour, 3 x 15 hours = 45 gallons
COP = 0.75, havent found rule, if i do ill comment
shaded triangle = 40..... 8 × 10 / 2= 40... explanation: a triangle (right in this case) would be divided by 2 because its half of a square / rectangle.
what is 3 times 34 divided by 2 plus 8 times 5
Answers
multiplied 3x34=102 divided by 2 is 51 plus 40 because 8x5 is 91
Answer: 91
Step-by-step explanation: 3 times 34 is equal to 102... let us work out the problem together.
3 x 34 = 102
now we must divided 102 by 2 which will equal 51
Now the final step is to do 8 times 5
8 times 5 = 40
51 plus 40 = 91
this is the correct way to do the equation.
so our final answer is 91
Benita buys 2 shirts for the same price s the taxe sale rate is 6.5%
Answers
Answer:
2s + 0.13s
2.13s
Step-by-step explanation:
One shirt costs s.
2 shirts cost 2s.
The tax rate is 6.5%, so the tax on 2s is 0.065 × 2s = 0.13s
The total cost with tax is 2s + 0.13s
You can also find the total cost by realizing that since the tax is 6.5%, the total price with tax is 1.065 times the cost, so you can write it as 1.065 × 2s = 2.13s
Answer:
2s + 0.13s
2.13s
Answer:
2.13s
and
2s+0.13s
Step-by-step explanation:
Because 2 shirts is s and 6.5 per cent would turn into 6.5 because of 2 times 1.065 is 0.13 which is the answer for part 2
Question shown in image. Worth 100 points
Answers
Answer:
75 degrees
Step-by-step explanation:
The corresponding angle is 75 degrees
Answer:
75 Degrees
Step-by-step explanation:
They are corresponding which would be 75 Degrees
Pls help thx
I WILL PICK THE BEST ONE
Answers
Answer:
a) 0.11
b) 60
Step-by-step explanation:
a)
Probability that a 3 will be rolled = frequency of 3 / total frequency
frequency of 3 = 11
total frequency = 100; 12 + 35 + 11 + 23 + 7 + 12 = 100
= 11/100
= 0.11
Answer: 0.11
b)
Probability of getting 6 = 12/100 = 0.12
Now, the dice is rolled over 500 times:
total times = 0.12 × 500
= 60 times
Answer: 60
10. 8 fewer than the sum of 14 and a number
Answers
Answer:
6 +x
Step-by-step explanation:
Let the number = x
Sum of 14 and a number = 14 +x
8 fewer than (14 + x )= 14 + x - 8 = 6 +x
Answer: 14 + x - 8 (can also be 6 + x)
Step-by-step explanation:
8 fewer means we're subtracting 8, which is -8
Sum of 14 and a number would be 14 + x
All of this combined would be 14 + x - 8 but if you want to simplify it, you can subtract 8 from 14 and get 6. This would be 6 + x.
A business assistant must leave more than $50 in the supply account. There is $200 in the account. The assistant needs to order x boxes of pens that cost $10. 50 each. What is the maximum number of boxes of pens the business assistant can buy? 10 boxes 14 boxes 15 boxes 23 boxes.
Answers
Answer:
14 Boxes Of Pens
Step-by-step explanation:
Hope This Helps :)
The base of an isosceles triangle is 30” and the altitude to that base is 8”. Find the length of one of
the two equal sides of the triangle.
please help!
Answers
Answer:
17"
Step-by-step explanation:
Isosceles means there are two equal sides in this triangle.
So the height not only is perpendicular to the base, but also cuts the base in half.
Each half is 15 inches. (30÷2=15) See image.
These half triangles formed by the height, are right triangles. You can use Pythagorean theorem or if you're familiar with the pythagorean triple 8, 15, 17, you will find the length of the side is 17 inches. See image.
what percent is 700 paise of 7 rupees
Answers
To find :-
What percent is 700 paise of 7 rupees .Solution :-
As we know that,
→ ₹1 = 100 p
So ,
→ 700p = ₹ 700/100
→ 700p = ₹ 7
Now let's calculate % , as ;
→ 700p / ₹7 * 100 %
→ ₹7/₹7 *100 %
→ 1 *100%
→ 100%
Hence 700p is 100% of ₹7 .
I hope this helps.
Step-by-step explanation:
We know that ,
1rupees = 100 paise
so , 7 rupees = 700 paise
We have to find the percentage of 700 paise of 7 rupees
Calculating Percentage ,
700paise/7rupees×100
7/7 × 100%
= 100%
Mins bought 4 1/2 pounds of cheddar cheese she used 1 1/3 pounds to make sandwiches how much cheese does she have left
Answers
Oscar bought a circular cover for his backyard spa with an area of 48 square feet. How can Oscar best determine the radius of the spa cover? A Divide 48 by , then take the square root of the quotient. B Take the square root of 48, then divide the quotient by T. C Multiply 48 byt, then multiply the product by itself. D Take the square root of 48.
Answers
Answer:
it is very hard questions but i give answer
I need help! really help!
Answers
Answer:
B and I
Step-by-step explanation:
1 x 3 = 3
2 x 3 = 6
3 x 3 = 9
etc.
12 x 3 = 36
1) If 13cos theta =5 then tan theta =?
Answers
Answer:
here sin theta = 5/13, and cos theta = 12/13
Step-by-step explanation:
so here tan theta = 5/12 [ as given ] tan=opposite/adjacent so sin=opposite/hypo and cos = adjacent/hypo
Brainliest?!
Solve for x. I’ll give points!
Answers
Answer:
x = 5explanation:
solving similarities:
bigger triangle is double of the smaller triangle.
balancing them:
→ x + 9 = 2(2x - 3)
→ x + 9 = 4x - 6
→ 4x - x = 9 + 6
→ 3x = 15
→ x = 5
[tex]→x + 9 = 2(2x - 3)[/tex]
[tex]→x + 9 = 4x - 6[/tex]
[tex]→ 4x - x = 9 +6[/tex]
[tex]→ 3x = 15[/tex]
[tex]→ x = 5[/tex]
Write the equation of a line parallel to the line y = 3x+5 and passes through the point (-7, 2)
Answers
Answer:
y=3x+23
Step-by-step explanation:
Parallel lines have the same slope, so we basically keep the same equation, but we find the new y-intercept so it accounts for (-7,2):
y = 3x + b
2 = 3(-7) + b
2 = -21 + b
23 = b
Therefore, your equation would be y=3x+23
Evaluate for M = 10, N = -5, and P = -2 .
Answers
Answer:
10/-5 =2/-1 = -2
Step-by-step explanation:
If this does not help, just ignore it honestly.
what is 8x =72 please help me know tank you
Answers
Answer:
x = 9
Step-by-step explanation:
this is because 8 times 9 = 72
You buy a bicycle helmet for $22.26, which includes 6% sales tax. The helmet is discounted 30% off the selling price. What is the original price?
Answers
Answer:
The original price of the helmet is 30$
Step-by-step explanation:
Please help I attached a photo.
Answers
Answer:
55w + 145
Step-by-step explanation:
Total = all accounts, so you have to add 10w to 45w, and 120 to 25
10w + 45w = 55w
120 + 25 = 145
So the answer is 55w + 145
Is this a proportion? show your work is please!
8/24 = 21/63
Answers
Answer:
1/3
Step-by-step explanation:
yes, this is a proportion ie 8 is equal to 21 then 24 is 24 ×21 ÷8 = 63.
A bridge has 45, -45, -90 right trangular supports. If the hypotenuse of each support is 16 ft, find the length of each leg of a support. PLS HELP ASAP
Answers
Answer:
16, 11.314, 11.314
Step-by-step explanation:
You can get this answer because we know that a 45, 45, 90 triangles formula (aka The Pythagorean Theorem) is:
a^2+b^2=c^2
Hope this helps :D
help for brainiest asap pleaseeeeee
Answers
Answer:
angle A = 45°
angle B = 110°
angle C = 25°
Answer:
i hope this will help uh.