please help quickly.
Answer:
x = 2, y = 5
Step-by-step explanation:
Given the 2 equations
y = - 2x + 9 → (1)
y = 4x - 3 → (2)
Substitute y = 4x - 3 into (1)
4x - 3 = - 2x + 9 ( add 2x to both sides )
6x - 3 = 9 ( add 3 to both sides )
6x = 12 ( divide both sides by 6 )x = 2
Substitute x = 2 into either of the 2 equations and evaluate for y
Substituting into (2)
y = 4(2) - 3 = 8 - 3 = 5
Then x = 2, y = 5
An expression is shown below.
35 + (-15) + (-7) + 10
Which of the following word problems could the expression represent? Select all that apply.
A.
Ichiro owed his friend Darlene $35. He paid her $15 on Monday, $7 on Wednesday, and $10 on Friday. How much money does Ichiro still owe Darlene?
B.
Marissa earned $35 babysitting. She bought a sweater for $15 and a book for $7. Her mom then gave her $10 for her allowance. How much money does Marissa now have?
C.
For his birthday, Steve got $35 from his mom, $15 from his grandma, and $7 from his brother. He spent $10 on tokens at the arcade. How much money does Steve have left?
D.
Queen earned $35 by walking the neighbors' dogs. At the mall, she spent $15 on a new book and $7 on some candy. She then gave $10 to her little sister. How much money does Queen have left?
E.
Emily had $35 to spend on her friend's birthday party. She bought a cake for $15 and soft drinks for $7. Her mom gave her $10 to buy her friend a gift. How much money does Emily have to buy her friend's gift?
Please I need your help ASAP
Answer:
5
Step-by-step explanation: y -5x so it will be five because you will add a 1 and it become 5
Answer:
5
Step-by-step explanation:
5 is next to the whole number next to the variable x making it a constant.
Add: a² + b² + c² – 3abc and a² – b² + c² + abc
2. Add: xy² + 4x²y – 7x²y - 3xy² + 3 and x²y + xy²
3. Add: 5x² + 7y - 6z² ; 4y + 3x² ; 9x² + 2z² - 9y and 2y - 2x².
4. From the sum of 3x - 2y + 4z and 3y – 2z, subtract x - y - z.
5. Subtract a – 2b – c from the sum of 3a – b + c and a + b – 3c.
6. The sum of two expressions is 3x2 + 2xy – y2. If one of them is 2x2 + 3y2, find the other.
7. From the sum of 4b2 + 5bc, -2b2 – 2bc – 2z2 and 2bc + 4c2, subtract the sum of 5b2 – c2 and -3b2 + 2bc + c2.
8. What should be subtracted from 3x + 5y + 9 to get - 2x + 3y + 15?
9. Subtract 2m – 5q + 7 from 4p + 2q and add your result to m2 – 3m3 + m - 1.
10. Subtract 2a2b – 3b2 from 3a2 – 5ab2 + 2b2 and subtract your result from the sum of the two expressions 3ab2 + 5b2 – 2a2b and a2b + 5a2 – 3ab2
Answer:
Here is your ans.
Step-by-step explanation:
I have few time Because I am too late to school.. So I had solved only up to q.no 5. . Hope you understand it. If you Like then Plz give a five star rating to my ans. And One thing sorry for rough handwriting and mistake
Help me out please.i will give brainly
Answer:
Hello! answer: 17
Step-by-step explanation:
Assuming this is the Pythagorean theorem our formula would be
a^2 + b^2 = c^2
meaning both of those sides multiplied by themselves added together will equal a number which is the result of c multiplied byitself sorry it sounds confused but...
15 × 15 = 225 8 × 8 = 64 225 + 64 = 289
the square root or the (number multiplied byitself that equals 289) is 17 because
17 × 17 = 289 so × = 17 I hope that helps!
Answer:
x = 17 cm
Step-by-step explanation:
Since it is a right triangle and you are trying to find x, you can use the pythagorean theorem. (a² + b² = c²)
First, plug the values into the equation: (a and b represent the legs and c represents the hypothenuse; otherwise known as the longest side.)
8² + 15² = c²
Square 8 and 15( or multiply them by themselves):
64 + 225 = c²
Add:
289 = c²
Take the square root of both sides:
√289 = √c²
Simplify:
17 = c
Therefore, x = 17 cm.
Hope this was helpful! Have a nice day! :)
need help with this question.
Answer:
8c-22
Step-by-step explanation:
I left the work in the photo
Answer: 8c-22
Step-by-step explanation:
First distribute into the parentheses
6(3c-4)-2(5c-1) -> 18c-24-10c+2
Now let’s simplify by adding or subtracting like terms
8c-22
That is your simplified answer
Hope this was helpful
Ana is graphing function F on a coordinate plane. What is the maximum number of different output
values of F for an input value of 2?
What is the answer to these? And how do you do them? Brainliest to best answer NO BOTS WILL BE ACCEPTABLE
Answer:
the submarine moves 17.5 feet every minute
Step-by-step explanation:
2100 / 120(minutes) = 17.5(minute)
and maybe you could divide 17.5m by 60 to get how many feet it moves every second, so
17.5m / 60 = 0.2916666
the submarine moves 0.2916666 feet below the surface every second
but this is coming from a 7th grader sooo
tell me if this isn’t right and I’ll try again!
Can someone help with this for brainliest?
Answer:
A: D
B: 20
Step-by-step explanation:
D is the correct answer because it can correctly determine what B will be.
We can calculate the problem and we get 20.
Answer:
0.4m = 8
20 minutes
Step-by-step explanation:
Equation
0.4m = 8
-----------------
Solve for m
Divide both sides by 0.4
m = 20 minutes
Simplify each exponential expression using the properties of exponents and match it to the correct answer.
Answer:
2: B, D1: A1/2: CStep-by-step explanation:
Here are the relevant rules of exponents:
[tex]a^{-b}=\dfrac{1}{a^b}\\\\a^0=1\\\\(a^b)(a^c)=a^{b+c}\\\\(a^b)^c=a^{bc}\\\\(ab)^c=(a^c)(b^c)[/tex]
ApplicationWe can use 4 = 2² and 6 = 2·3 to expand each of the given expressions into powers of 2 and 3.
[tex]\boxed{\dfrac{3^{-3}\cdot2^{-3}\cdot6^3}{(4^0)^2}}=\dfrac{3^{-3}\cdot2^{-3}\cdot(2\cdot3)^3}{((2^2)^0)^2}=2^{-3+3-0}\cdot3^{-3+3}=1\cdot1=\boxed{1}[/tex]
[tex]\boxed{\dfrac{3^2\cdot4^3\cdot2^{-1}}{(3\cdot4)^2}}=\dfrac{3^2\cdot(2^2)^3\cdot2^{-1}}{3^2\cdot(2^2)^2}=2^{6-1-4}\cdot3^{2-2}=2\cdot1=\boxed{2}[/tex]
[tex]\boxed{\dfrac{2^4\cdot3^5}{(2\cdot3)^5}}=\dfrac{2^4\cdot3^5}{2^5\cdot3^5}=2^{4-5}\cdot3^{5-5}=2^{-1}\cdot1=\boxed{\dfrac{1}{2}}[/tex]
[tex]\boxed{\dfrac{(3\cdot2)^4\cdot3^{-3}}{2^3\cdot3}}=2^{4-3}\cdot3^{4-3-1}=2\cdot1=\boxed{2}[/tex]
Tell me everything I need to know and please work out the problems
Answer:
10 sections
Step-by-step explanation:
Perform the following division to answer this question:
2 1/2 ft
-------------------
1/4 ft/section
Convert 2 1/2 into an improper fraction with denominator 4:
2 1/2 ft 5/2 ft 10/4 ft
-------------------- = -------------------- = --------------------
1/4 ft/section 1/4 ft/section 1/4 ft/section
This reduces to:
10 ft
---------------- = 10 sections
1 ft/section
Which equation models the statement shown? y varies directly with x and =25 y = 25 when =5 x = 5 .
Answer:
The value of y is 125 when x=25.
Step-by-step explanation:
It is given that y varies directly as x. It means y is proportional to x.
Where k is constant of proportionality.
It is given that y=25 when x=5. Put x=5 and y=25 in the above equation to find the value of k.
Divide both sides by 5.
The value of k is 5.
The relation between x and y is defined by the equation
Put x=25 in the above equation.
Therefore the value of y is 125 when x=25.
Please help
A mean ogre has locked the princess of Polygonia into a tower of a castle. She could escape through the window, but it is 50 feet above the ground, a long distance to jump! A 10 foot wide moat full of alligators surrounds the tower. Naturally, Prince Pythagoras wants to rescue her. The prince has some rope. His plan is to use an arrow to shoot one end of the rope up to her window. The princess can then slide down the rope to the other side of the moat, and off they will ride into the sunset Help the prince save the princess and demonstrate your work as you complete the story by solving the problem. Make sure to put some images in your presentation. So, if the prince needs an extra 2 feet of rope for tying it to the window frame and holding it on the ground, how long does his rope need to be?
Answer:
62 feet?
Step-by-step explanation:
uhhhhhhhhhhhhhhhhhh i added the witdth of the moat and the height while also adding the exra feet
A user car dealer brought a car for $12,000 and wants to sell it at a 15% profit. How much should he sell the car for?
Answer:
$13,800
Step-by-step explanation:
She sells the car for 115% of the value of the car, because she wants a 15% profit. 115% of 12000 is the same as 12000*1.15, since 115% is eqaul to 1.15. 12000*1.15 = 13800
help this is multiplying fractions
Find the volume of the triangular prism.
1.)90 m3
2.)9 m3
3.)5 m3
4.) 45 m3
Answer:
Бардык белгилүү авиация мыйзамдарына ылайык, аары учуу мүмкүнчүлүгү жок. Канаттары өтө эле кичинекей, семиз денесин чече албайт. Албетте, аары баары бир учат. Себеби аарылар адам мүмкүн эмес деп эсептеген нерсеге маани бербейт.
Step-by-step explanation:
Бардык белгилүү авиация мыйзамдарына ылайык, аары учуу мүмкүнчүлүгү жок. Канаттары өтө эле кичинекей, семиз денесин чече албайт. Албетте, аары баары бир учат.
You earn $5.25 per hour. How much will you earn in 25 hours? (multiple choice)
(A) $207.20 (B) $129.50 (C) $131.25 (D) none of these
Step-by-step explanation:
Look for keywords
when you see "per" that means theres a rate (something happens every unit of time)
To write a rate you divide whatever happens by whatever unit of time youre useing
In this example our rate is 15$ per hour which can be written as:
15$/1 hour (but we usually dont write it if theres a 1)
You can think of this as a regular fraction
[tex] \frac{15}{1 \: hour} \times 25 \: hour[/tex]
Here the hour will cancel and youre left with $
1) Explain how angles are measured.
Which phrase can be represented by an equation? twice as much as a number 12 less than a number half of a number is 15 the difference of 20 and a number
Answer:
Half of a number is 15
Step-by-step explanation:
First of all, add commas between each option so it's easier to read I had a hard time figuring out what the options were because of this.
An equation is a statement that the values of two mathematical expressions are equal. An expression is a collection of symbols that jointly express a quantity. This means there has to be an equal sign when the phrases are put into numerical form.
Twice as much as a number: 2X
12 less than a number: X - 12
Half of a number is 15: X/2 = 15
The difference of 20 and a number: 20 - X
As you can see, only one of these phrases is an equation by definition, and that is X/2 = 15, or half of a number is 15. That's because it's the only one that values two expressions as equal.
(This is 6th grade math)
Question: Half a number minus nineteen
Answer:1/2 - 19
Step-by-step explanation:
Solve.
8+ x/2= −12
Don't add spaces to your answer.
Answer:
x=-40
Step-by-step explanation:
Answer: x = - 40
Step-by-step explanation:
8+2=−12
8+x2=−128+ x/2=-128+2x=−12
8+2−8=−12−8
Help Me pls its due today pls
Answer:
= 2.75823202 quarts
Step-by-step explanation:
1.40513707 imperial quart = 64 US ounces
1.66534763 imperial quart = 8 cups
0.83267382 imperial quart = 2 US pints
1.40513707+1.66534763+ 0.83267382 = 3.90315852
conversion to gallons = 1.171875
2 - 1.171875 =0.828125
0.828125 gallons conversion x 3.33 = 2.75823202 quarts
2.75823202/0.828125 shows s the conversion rate from gallons to quarts
= 3.33
The answer is = 2.75823202 quarts
Five students observed the following temperatures.
2, -3, 0, -5, -1
Order them from coldest to warmest.
Group of answer choices
a. 0, -1, 2, -3, -5
b. -1, -3, -5 0, 2
c. -5, -3, -1, 0, 2
Answer:
-5 , -3 , -1 , 0, 2
C is the correct answer
...................................
Which one is correct? Please answer fast
Answer:
first one
Step-by-step explanation:
Answer:
The first one
Step-by-step explanation:
2x means you need to multiply x by 2, not add
can someone please solve these i need them in the next 2 hours
Answer:
no sry
Step-by-step explanation:
The price of an item has been reduced by 70%. The original price was $36.
A triangle has side lengths of (8b – 10c) centimeters, (8b – 4d) centimeters, and
(9d + 8c) centimeters. Which expression represents the perimeter, in centimeters,
of the triangle?
A. 25bd - 6cd
B. -c + 4d + 16b
C. 4bd - 2bc + 17cd
D. 16b + 5d - 2c
Will give brainliest if you explain! :)
can you please help me i will mark brainliest if its right AND NO LINKS
Answer:
;p
Step-by-step explanation:
1. 48 inches
2. 1.5 gallons
3. 5,000 meters
4. 2 kilograms
5. 20 cups
6. 6 meters
7. 5,280 feet
8. 700 meters
9. 36 inches: 3 feet and 1 yard
5 1/2 feet: 66 inches and 1.83 yards
(couldn't do the last one because it's covered)
nick works at a job that pays $6.00 per hour. if he works h hours and makes 192.00 dollars this week, how many hours did nick work this week?
Answer:Ok so he makes about 6.00 bucks an hour so if he works 30 hours how much will he need to make 192.00 bucks.
Step-by-step explanation: Multiply 6.00 by 30 hours= 180 and u need 192$
so 192-180=12 so add 2 more hours to your 30 hours which makes it 32 hours.
If nick works 30 hours plus 2 more hours a week, he will make a total of $192.
Pls help! I need to show work! Thanks!
Answer:
[tex] {4}^{0} + {2}^{2} \times 7 - 4(42 \div 7) - ( {4}^{1} - 1) \\ 1 + 4 \times 7 - 4 \times 6 - (4 - 1)[/tex]
1+28-24-3
1+4-3
5-3
2