Answers
Answer:
Step-by-step explanation:
10 students participated in a Mathematics quiz. If the number of girls is 4 more than the number of boys, find the number of boys and girls who took part in the quiz
Solution: Number of girls = x
Number of boys = y
x + y = 10 -------------------(I)
Number of girls is 4 more than the number of boys
x - y = 4 ----------------------(I)
x = 4 + y
Substitute x = 4 +y in equation (I)
4+ y + y = 10
4 + 2y = 10
2y = 10-4
2y= 6
y = 6/2
y = 3
Plug in y = 3 in eqution (I)
x + 3 = 10
x = 10 - 3
x = 7
Number of girls = 7
Number of boys = 3
Related Questions
1.) Determine if the coordinate points represent a function. (1.3). (2.6). (3.9). (4. 12). (5.15
O Function
O Not a Function
O both
Answers
Answer:
Function
Step-by-step explanation:
These coordinates do represent a function. For a relation to be a function every y-value must have an x-value, this means x's cannot repeat. In this relation x's never repeat, they simply increase by one every time. Therefore, this is a function.
Could use some help please
2x+y=-4
-3y=2x+12
Answers
Answer: 3y=12−2x 3 y = 12 - 2 x
Step-by-step explanation:
Answer:
Let
2x+y=-4——(1)
-3y=2x+12
2x+3y=-12—-(2)
Deduct eqt 1 from 2
(2x+3y=-12)
-(2x+y=-4)
2y=-8
y=-4
Put y=-4 into eqt 1
2x-4=-8
2x=-8+4
2x=-4
Divide both sides by 2
x=-2
:. x,y= -2,-4
Step-by-step explanation:
HELPPP NEED THIS IN THE NEXT 10 MINSS!!!!
Answers
Hahahahahahab
2x + 5 = 13
What is the answer and the steps for this equation
Answers
Subtract 5 from both sides
You end up with 8
Divide 2 by 8
You end up with x=4
2x + 5 = 13
2x = 13 - 5
2x = 8
*divide both sides by 2*
x = 4
Solve 7x - 9 = 28 + 4(x - 1).
A X = -11
B x = 11
C X = 3
D x=-3
Answers
Have a good day
Find the solution between - x - 3y = 6 and the equation of the line shown on the graph below.
Answers
Answer:
They are the same line.
Step-by-step explanation:
y = -1/3x - 2
-x - 3y = 6
First, we need both lines to follow the equation of y = mx + b so that we can graph them. We already have one equation in that form (the one from the graph given), so we can ignore that for now.
Next, we need to solve -x - 3y = 6. Let's first move the x to the other side of the equal sign.
-3y = x + 6
Now, since we have a similar equation to what we need, we just need to divide the y by the given number in front (or -3). But that also means that we must divide the other side by the same amount (or each variable).
-3y = x + 6. -> y = -1/3x - 2
So, your final equation for -x - 3y = 6 should be;
y = -1/3x -2
Bringing down the other equation, we get:
y = -1/3x - 2 and y = -1/3x - 2
Making both equal to each other (they cancel each other out).
Hope this helps!
(And sorry that this is a long explanation)
PLEASE HELP AND SHOW WORK
Answers
Answer:
38) Angle 2 = 32°; angle 1 = 32°; angle 3 = 110°
39) Angle 3 = 81°; Angle 2 = 28°; angle 1 = 71°
Step-by-step explanation:
38) angle 2 = 180 - (110 + 38)
This is because sum of angles in a triangle is equal to 180°. Thus;
Angle 2 = 32°
Angle 1 = 38° due to the postulate that alternate interior angles are equal
Angle 3 = 110° due to corresponding angles postulate
39) Angle 3 = 81° due to the postulate that alternate interior angles are equal
Angle 2 = 28° due to the postulate that alternate interior angles are equal
Angle 1 = 180 - (81 + 28) = 71° due to the fact that angles in a triangle sum up to 180°
PLZZZ, help I having a Test!!!
What is the length of AD? The picture is attach....
Answers
Answer:
kite
Step-by-step explanation:
it be kite
Find the LCM of 18e2x, e2t and y3.
In a class of 45 students, there are 12 girls. What percentage of the girls are in the class?
Please explain!
Answers
Answer:
12/45 = 0.26666666
0.26666666 X 100 = 26.6666666
27%
PLEASE HELP TIMED TEST!!!
Which interval below correctly describes the domain of the graph f ( x ) ? a.) (-∞,3} b.) [-3,5] c.) [-5,3] d.) (-∞,∞)
Answers
Answer:A
Step-by-step explanation:
If they both go down from 3 then it is 3 and then -infinity.
(this is my best answer without a picture, hope you get it right!)
I need help with this question from edulastic please.
Answers
-1 has more than one output.
hope this is correct,, have a nice day :))
Answer:
i think it is the one you c
Step-by-step explanation:
I
1. Eating at a nice restaurant, the waitress brings you a bill for $57.65. If
you want to leave 20%, what is the tip amount?
Answers
Answer:
I think 11 dollars but I don't know how many cents close to another dollar though so it would be somewhere around 11-12$
Please I dont wanna fail :( help me
Answers
Answer:
f = 132 degrees
Step-by-step explanation:
The total angle measure of this is 360 degrees. We know 2 of the angles, so subtract them from 360 to get 198. The sum of f and g must equal 198 degrees. Since we know that f = 2g, we can divide 198 by 3 to get 66. So, we know g = 66. To find f, multiply 66 by two to get 132. So, g = 66 and f = 132
on aleks, need help asap :(
Answers
How does the decimal point move when multiplying 79.816×103?
Answers
Answer:
it moves 2 to the right
Mrs. Russell bought a computer for $250. The tax was 7%. What was the total cost of the computer with tax?
Answers
Answer:
$267.5
Step-by-step explanation:
7% of 250=17.5. 250+17.5=267.5
Answer:
267.5
Step-by-step explanation:
250+7%=267.5
Hope this helps :)
solve the following equation when x = 8
15x - 2 =
Answers
Answer:
118
Step-by-step explanation:
15(8)-2
120-2
118
Brainly plss?
Answer:
118
Step-by-step explanation:
you do 15 x 8 then subtract 2 from the product
this is for freckle which I hate can someone help?
Answers
Answer:
The answer is B. 26 miles per hour.
Step-by-step explanation:
13+13=26
X goes by an hour.
Hope this helps
Have a great day/night
Points A,B, and C are collinear. Point B is between A and C. Solve for x.
Find x if AB = 2x-14, BC = x+4 and AC =14
helpp will give brainliest
Answers
Answer:
Ac=14 is you answer i think
Step-by-step explanation:
Hope this helps
solve for 2x+2(x−5)=6
Answers
Answer:
x=4
Step-by-step explanation:
An expression is shown below:
the square root of 32 plus the square root of 2
Which statement is true about the expression?
the square root of 32 plus the square root of 2
It is rational and equal to 4 times the square root of 2.
It is irrational and equal to 4 times the square root of 2.
It is rational and equal to 5 times the square root of 2.
It is irrational and equal to 5 times the square root of 2.
Answers
Answer:
C or D...
im guessing
Answer:
√32=√(16*2)=4√2
4√2 + √2=5√2
That is why is irrational
Step-by-step explanation:
Solving a Real-World Problem
Mr. Martin is giving a math test next period. The test, which is worth 100 points, has 29 problems. Each problem is
worth either 5 points or 2 points. Write a system of equations that can be used to find how many problems of each
point value are on the test.
Let x be the number of questions worth 5 points and let y be the number of questions worth 2 points.
x + y = 29, 5x + 2y = 100
x + y = 100, 5x + 2y = 29
5x + y = 29, 2y + x = 100
2x + y = 100, 5y + x = 29
Answers
Answer:
x + y = 29
5x + 2y = 100
Step-by-step explanation:
Here, we want to set up equations
There are 29 problems, so adding up the number of individual problem types will give 29
x + y = 29 ••••••(i)
Let us work with points now;
x is worth 5 points, y is worth 2 points
Thus, mathematically;
5x + 2y = 100 ••••••••••(ii)
Answer: A. x + y = 29, 5x + 2y = 100 and the other one is B. 14 problems worth 5 points and 15 problems worth 2 points
1.008 +7.
2-5.92 +2.34
Answers
4.628
Hope that helps <3
Answer: 4.628
Step-by-step explanation:
PLEASE HELP IM NOT GOOD AT MATH!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Jimmy was walking to get the mail; at which time he fell into a hole and broke his ankle. He has a PPO insurance plan. His total bill was $2,000. If Jimmy has a $1,000 deductible with an 80/20% co-insurance, how much total will Jimmy have to pay out of pocket? Show your work.
Answers
Answer: $200
Step-by-step explanation:
Since there is a deductible here, you deduct it from the total bill first:
= 2,000 - 1,000
= $1,000
With an 80/20% coinsurance plan, you will pay for 20% of this bill and your insurance company will pay 80%.
You will therefore pay:
= 1,000 * 20%
= $200
I REALLYYYYY NEED HELP PLSSSS NO DUM ANSWERS I SERIOUSLY NEED HELP
Answers
Answer:
First blank: 869x
Second blank: 17,575
D
Step-by-step explanation:
Men (f): 389x + 7500
Women (g): 480x + 10075
Equation: (f + g)
Equation: 389x + 7500 + 480x + 10075
Combine like terms
869x + 17575
Equation: 869x + 17,575
200-123+289-2/2=????
Answers
Answer:
365
Step-by-step explanation:
200-123+289-2/2
77+289−2/2
366−2/2
366−1
= 365
HELP ASAP
6+ x - y + 10=
Answers
Answer:
x-y+16
Step-by-step explanation:
add the like terms, 6 and 10 which is 16. since the variables are not like terms, thats your final answer. hope it helped :)
Yoo 9th grade math please help me out My grade is slowly slipping
Answers
Answer: I'm pretty sure it would be no
Step-by-step explanation:
Answer:
No
Step-by-step explanation:
y_<_2x
4_<_2(3)
4_<_6
true
y > x + 4
4 > 3 + 4
4 > 7
false
20 POINTS!!!
Which day and time represents the best predicted time during this week to explore the tide pools in Point Loma?
What is the difference between the highest tide predicted on this table and the lowest tide predicted on this table?
What is the difference between the highest and lowest tides predicted on Friday, January 31?
Ryan and his dad plan to go tide pooling on Saturday morning around 11:30am. Did they pick a good time to go? Is there a better time on Saturday that they should go instead? Explain your reasoning using complete sentences.
Answers
Answer:
I'm doing this project rn I'll help you as soon as I'm done! Did you do the other sections already?
Step-by-step explanation:
find the value of the expression below x=2 3x
Answers
So that would mean
3(2)=6
Hope this helps have a good day! :)