2) y= 4x - 2
3х + 2y = 7
in subsitutuion
Answer:
x=1
Step-by-step explanation:
Substitute the y equation for the variable y in the second question
3x +2(4x-2)=7
3x+8x-4=7
11x-4=7
11x=11
x=1
I need help with solving these math problems please whoever answers them correctly I will mark brainliest!!!
(¡¡Please help!!)
Ronny can walk 4 miles in t minutes. At that rate, how long will it take her to walk 11 miles?
A. 11t/4
B. t + 7
C. 4t/11
D. t/11
E. 4/t
Answer:
Step-by-step explanation:
D is the answer
Answer:
C
Step-by-step explanation:
I RLY NEED HELP WITH THIS I WILL MARK BRAINLIEST!!!!
Answer:
20 is the total perimeter
Step-by-step explanation:
Answer:
6x + 2
Step-by-step explanation:
The area of a square is side length times itself.
In this problem, the area of one square is:
x², or x * x. So the side length of each square must be x.
In the rectangular shape, the area would be top * side. The side is equal to x because "side" is equal to the sides of the other squares (because a square's sides are all the same).
Plugging that into the equation, top * x = x, so the top must be 1.
There are 5 "full-length sides" on the two "full" squares on the left. Then, in the last skinny rectangle, there are two "tops", and one "full-length side".
Substitue the values of each side.
5x + 1 + 1 + x = 6x + 2
Hope this helps! If you have any questions, feel free to ask.
Round the fraction 2/9 to the nearest whole number.
Answer:
0
Step-by-step explanation:
first you need to know what is 2/9 as a decimal. to find that you need to do 2 ÷9 which equals to 0.2222222222222 . then you round this to a whole number which is 0.
hope this helps . please give me a brainliest.
If the length of the legs of a right triangle are 5 m and 7 m, what is the length of the hypotenuse?
Answer:
[tex]c = 8.60232526704263[/tex]
[tex]c \approx8.6[/tex]
Step-by-step explanation:
[tex] {c}^{2} = {a}^{2} + {b}^{2} [/tex]
[tex]c = \sqrt{ {a}^{2} + {b}^{2} } [/tex]
[tex]c = \sqrt{ {5}^{2} + {7}^{2} } [/tex]
[tex]c = \sqrt{25 + 49} [/tex]
[tex]c = \sqrt{74} [/tex]
[tex]c = 8.60232526704263[/tex]
[tex]c \approx8.6[/tex]
Solve for y
y - 2 = 2x
Answer:
y = 2x + 2
Step-by-step explanation:
Add two to both sides.
Find an answer to your question Using the triangle drawn below, determine the exact value of y. 45° trigonometry !
Step-by-step explanation:
hope this helps you
thank you
Hi you can answer this it is difficult for me
9514 1404 393
Answer:
see attachments
Step-by-step explanation:
a) A table lists the ordered pairs either by row or by column. In the attached, we have listed the x-values down a column, and the y-values the same way. (This way, we can use the same list for the map.) The table is the first attachment.
__
b) A graph is simply a plot of the given points. The graph is the second attachment.
__
c) A map is similar to a table, but with arrows pointing to the output value for a given input. The map is the third attachment.
Which triangle makes this statement true?
Answer:
D
Step-by-step explanation:
they need the same angle measures and side lengths to be congruent. also you need to line up the angles of the same measure in each triangle in the name
Answer: D
Step-by-step explanation:
HELP!!! Please I have a timer
Mary and Alice are playing a card game. Mary has 21 points. She has 9 points less than Alice.
How many points does Alice have?
Enter your answer in the box.
_______ points
Answer:
30
Step-by-step explanation:
I love math its my fav subject. Facts: P:21+9=30. The check, 30-9=21.
An airplane flies 1431 miles in 2 hours 15 minutes. What is its average speed in miles per hour?
Answer:
665.58 miles per hour
Step-by-step explanation:
1431/2.15=665.58
simplify 4(8x+3y) pls help
Answer:
32x+12y
Step-by-step explanation:
trust me
Answer:
32x+12y
Step-by-step explanation:
4*8x = 32x
4*3y= 12y
Alicia purchased H half-gallons of ice cream for $3.50 each and P packages of ice cream cones for
$2.50 each. She purchased 14 items and spent $43. Which system of equations could be used to
determine how many of each item Alicia purchased?
(1) 3.50H + 2.50P = 43 (3) 3.50H + 2.50P = 14
H+P = 14
H+ P = 43
(2) 3.50P+2.50H = 43
P+ H = 14
(4) 3.50P + 2.50H = 14
P+H = 43
Answer:
3.50H + 2.50P = 43
Step-by-step explanation:
Source: Trust me bro
Find the square root of 8281 using long division technique
What is true about the area of a circle given radius r, a rational number?
O Area of the circle is equal to its circumference.
O Area of the circle is irrational.
None of the above.
O Area of the circle is rational,
Answer:
b
Step-by-step explanation:
escribe el número que corresponda a la escritura polinomica 8x10³+4x10²+0x10¹+9x10⁰
Answer:
8409 es 8×10³ es 8 4×10² es 4 0×10¹ es 4 9×10⁰ es 9
The library started the yoar with 14,341 books. At the end of the first week
1456 books had been checked out. At the end of the second week 3,298
books had been checked out and 2,192 books had been returned. How many
books were in the library at the end of the second week?
Answer:
the answer is 11788 :) your welcome
A number is being multiplied by a power of 10. Find the number.
Enter your answers in the boxes.
Can you guys help me :D ty
Answer: a:7 b:36 c:4
Step-by-step explanation:
the exponents are the amount of 0s you put behind the number.
ex: 10 to the power of 4: 10,000, 4 zeroes.
How are 3/6 and 4/8 equivalent? Just the fractions.
Answer:
Step-by-step explanation:
3/6 = 1/2 and 4/8 = 1/2 so they are equal because 1/2 = 1/2
Evaluate:
5x2 – 2 (y + 1) + 9 when x = 2 and y = 1.
Answer:
25
Step-by-step explanation:
[tex]5x^{2} - 2 ( y + 1)+9 = 5*2^{2} - 2(1 + 1) + 9 = 5 *4 - 4 +9 = 20 - 4 + 9 = 20 + 5 =25[/tex]
The function f(x) = 350 - 125x represents how
many miles f(x) the helicopter is from its destination
after x hours.
a. f(1) = 225, interpret this value in terms of context.
Answer:
The helicopter is 225 miles from its destination and will reach the destination in 1 hr.
Step-by-step explanation:
describe what is happening in figures 1-3
Answer:
Step-by-step explanation: 1 you see white mice and grey mice 2 the bird goes for the white mice 3 the bird mainly ate the white mice ( i hope this helps you a little bit)
The event happening in figures 1-3 is that the bird is catching all the white mouse one by one.
What is image description?Image description or picture discription is to figure out and express the image in the word form. In image description, one anlaze each point of the picture to identify that what is happning in it.
The given image has three part. Lets understands all the parts one by one.
In the figure number 1 there are 8 mouse in which 4 are white and 4 are black. In the figure number 2 the bird caught one white mouce and there are 7 mouse left on the land.In the figure number 3, ther are 2 more white mouse are missing. This concludes that bird is catching white mouse one by one.Thus, the event happening in figures 1-3 is that the bird is catching all the white mouse one by one.
Learn more about the image description here;
https://brainly.com/question/561273
what's 200 - 300 ..
.....
Answer:
200-300= -100
Step-by-step explanation:
hope u get it
Answer:
1. How are you in high school if you don't know how to solve simple equations like 200-300?
2. 200-300= -100
Step-by-step explanation:
Hope that this helps! :)
A rectangular garden is 45 ft wide and 70 ft long. In a drawing, the width is 9 in. Identify the length on the drawing.
Answer: the length in the drawing is 1.166666...ft or 14 inches.
Step-by-step explanation:
there are 0.75 ft in 9 inches, and 45/0.75=60. So, to find x you need to divide 70 by 60. :))
If you needed to answer in inches, I found my answer by dividing 45/9 which equals 5, so x=70/5. x=14 inches.
Answer:the other answer will explain all and the answer is 14in I had a quiz on it
Step-by-step explanation:
I’ll love u forever if u can help me with this ASAP PLZZZZ ;)
Answer:
the answer is A
Step-by-step explanation:
Because
Multiply the first equation by 2
6x-y=18
Both side multiply 2
12x-2y=36
And then subtract the second equation form the result,
12x-2y=36
4x+2y=26
16x=62
x=3.8
The variable in the term 7m⁴ is raised to the power of
Answer:
Raised to the power of 4
Step-by-step explanation:
Hooppee heelps
Write a sum of four numbers that equals 0, none of which are opposites.
The four numbers whose sum equals 0, none of which are opposites are
-2, 4, -9, 7.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
Four numbers:
-2, 4, -9, 7
We see that,
The sum of the four numbers is 0.
-2 + 4 + (-9) + 7
= -11 + 11
= 0
None of the numbers are opposite.
Thus,
The four numbers are -2, 4, -9, and 7.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ2
Help. Please open powerpoint and help me!
Answer:
30.4%
1000 at £1.10
1000 x 1.10 = £1100
35% of 1000 is given away
1000 - 35% = 1000 - 350 = 650 left
35% of £1100 = £385, subtract to get £715 pounds worth of pins left
650 are left, with 385 pounds lost
60% of 650 = 390 pins sold at £3 each
40% of 650 = 260 sold at £5 for 2
3 x 390 = £1170 made from the first lot
260/2 = 130 x 5 = £650 made from the second lot
£1170 + £650 = £1820 from sales
Sales - cost to make - losses (giveaways) = profit value
1820 - 1100 - 385 = 335 pounds of profit
To find the gross profit margin, we take the profit, and find what percentage of the production cost it is.
335 is about 30.45% of 1100
30.45%, which is 30.4% to 1 decimal place.
The user is not responsible for any errors and all care should be taken to validate answer by self before submission.
