Answer:
y=5
x=-1
Step-by-step explanation:
5x-2y=-15
3x+8y=37
add 2y to both sides
5x=2y-15
divide both sides by 5
x=(2y-15)/5
x=2y/5-3
substitute for x
3(2y/5-3)+8y=37
6y/5-9+8y=37
add 9 to each side
6y/5+8y=46
subtract 8y from both sides
6y/5=46-8y
multiply both sides by 5
6y=5(46-8y)
6y=230-40y
46y=230
y=5
substitute for y
5x-2(5)=-15
5x-10=-15
5x=-5
x=-1
Streets in the city can be represented by the equations in the given table. Use the equations to find the type of quadrilateral that the streets form. Justify your answer.
Answer:
It is a rhombus.
Step-by-step explanation:
We have the four equations:
3x - y = -4
3y - x = 4
3y = x + 12
y = 3*x - 4
First, we need to write all of them in slope-intercept form, so they are easier to read.
We get:
y = 3*x+ 4
y = (1/3)*x + 4/3
y = (1/3)*x + 12/3
y = 3*x - 4
First, we can see that:
y = 3*x+ 4 and y = 3*x - 4
are parallel lines, because they have the same slope.
y = (1/3)*x + 4/3 and y = (1/3)*x + 12/3 also are parallel lines, because they have the same slope.
Then this is a parallelogram.
Now, here we have two slopes, 3 and 1/3.
Remember that for a line y = a*x + b
A perpendicular line would be written as:
y = -(1/a)*x + c
From this we can see that there are no perpendicular lines in our set of lines.
Then this can not be a square nor a rectangle.
It can not be a trapezoid, because we would need 3 different slopes to make a trapezoid, and here we have only two.
Then this can only be a rhombus.
Below you can see the graph of the four lines to see which quadrilateral they form.
Given f (x) = 9x– 15, find f (3).
Answer:
f(3)=12 should be the answer
Step-by-step explanation:
replace x with 3 and solve
Given that 3x – 8y = 39
Find y when x = 3
Give your answer as an improper fraction in its simplest form.
Answer:
- [tex]\frac{15}{4}[/tex]
Step-by-step explanation:
Given
3x - 8y = 39 ← substitute x = 3 into the equation
3(3) - 8y = 39
9 - 8y = 39 ( subtract 9 from both sides )
- 8y = 30 ( divide both sides by - 8 )
y = [tex]\frac{30}{-8}[/tex] = - [tex]\frac{15}{4}[/tex]
What is the domain of the function graphed?
Answer:
C lets look at were this line starts which is in between 7 and 8 right in the middle making it 7.5 it is negative because the point is on the negative side of our graph. Where the line ends in on positive 2 on the x-axis. -Your friend, Bill Cipher
Step-by-step explanation:
John and his 3 friends decide to order food. The cost of one box of food is $x. If each boy purchases one box of food, what is the total cost? *
Answer: Just times 3
For example
If a box cost 6$
Just do 6 times 3
which equals 18
Step-by-step explanation:
Answer
depends on how much each one cost you put $x so whatever that number is supposed to be times 3 then you get your answer
Step-by-step explanation:
comment what the number is and I'll let you now if you want
please help me asap, i wi give brainliest!! <3
Answer:
the answer would be 132
Step-by-step explanation:
180-48=132
please help due at 11 !! thank you so much
Answer:
13cm
Step-by-step explanation:
The pythagorean theorem states that, for right triangles, [tex]a^{2} +b^{2} =c^{2}[/tex]. Using this equation, we can solve for the hypotenuse.
a = 12cm
b = 5cm
c = hypotenuse
[tex]12^{2} +5^{2} =c^{2}[/tex]
[tex]144+25=c^{2}[/tex]
[tex]\sqrt{169} =c[/tex]
13 = c
Answer:
13
Step-by-step explanation:
a^2+b^2=c^2
12^2+5^2=c^2
144+25=c^2
169
square root of 169=13
13=c
Factor Completely 14bx^2-7x^3-4b+2x
Answer:
=14bx2−7x3−4b+2x
Step-by-step explanation:
Please help me I'm dying D: I'll mark brainliest :>
Answer:
6 2/3
Paul made $205
2/3+3 3/4 = 4 5/12
240 students in sixth grade
15 oz for $1.29
Step-by-step explanation:
5/(3/4) = 5/1x4/3 = 20/3 = 6 2/3
proof:
6 2/3 x 3/4 = 20/3 x 3/4 =60/12 = 5
Look at triangles TUV and T'U'V'.Which best explains the transformation of triangle TUV to form triangle T'U'V'?
Answer:
The answer is D or Triangle TUV is dilated by a scale factor of 9 and then translated 2 units right and 1 unit down to form triangle T"U"V" . I just took the test and I hope I helped : )
Step-by-step explanation:
A store sold 7 white chairs for $148.75. How much 10 white chairs cost at the same unit price?
Answer:
212.5
Step-by-step explanation:
7 chairs = 148.75
148.75 ÷ 7 = 21.25
21.25 x 3 = 63.75
148.75 + 63.75 = 212.5
ASAP Identify the measure of angle x.
Answer:
X is 5
Step-by-step explanation:
ok so im really confused i will give brainliest to who answers first!
Answer:
1) fraction
2)denominator
3)quotient
4)remainder
i hope this helps
A square with a side length of 2 units is dilated in a coordinate plane using the origin as the center of dilation. The resulting square has a side length of 16 units. Determine the scale factor used to create this dilation
Answer:
2.5
Step-by-step explanation:
It is correct trust me.
class 7th maths chapter 13 Exponents of Power This is Test question
Answer:
-11/7
Step-by-step explanation:
Which quadrant does the terminal side of a -145° angle lie in?
10p^(2)- 5pq - 180q^(2)
Solve (-5/2)x ‐ 5 = -55
Answer: 5
Step-by-step explanation: add 5 on each side and you get -50 then divide -5/2 with -50 and get 5
WHICH ONE !!
A. 3
B. -3/4
C. -1
D. 3/4
GMMMMMMM
put random things that don't make
I'm going to the strawberry patch to pick some pears because I forgot to turn off my tv
Answer:
vibe but hope u have a good day
Step-by-step explanation:
Answer:
Im very confused but sometimes when my parents arent home i go to my garden and bury myself in the ground and pretend imma carrot
Step-by-step explanation:
UnU
Point S is located at (-3,2) on the coordinate plane. Point S is reflected over the y-
axis to create point S'. What ordered pair describes the location of S'?
Answer:
(3,2)
Step-by-step explanation:
so how do you draw 2 degree angle
A sofa company offers two deals.
You can get 15% off the full price of £1300 or pay a deposit of £500 plus 6 monthly payments of £112
Show which is the better deal.
Answer:
The first deal is the better one.
Step-by-step explanation:
first deal: you have to play 1105£ in total.
second deal: you have to pay 1172£ in total.
Answer:
first offer : £1105
Step-by-step explanation:
1300÷0.15=195
so price will be £1105
second offer
£1300-500=800
112X6=£672
800+672=£1472
(Multiple choice/ Brainliest will be rewarded)
I’d like some help on this question.
(Zoom in if needed, the answer may be blurry )
Answer:
1. h=1.5d. 2. 30cm in 20 days
Step-by-step explanation:
2. 20×1.5
A major storm has winds speeds that are at least 110 miles per hour.Write and solve an inequality that describes how much greater these wind speeds are than the slowest hurricane
Answer:
x ≥ 36 miles per hour
Step-by-step explanation:
The speed of a major storm is at least 110 miles per hour while the speed of the slowest hurricane is at least 74 miles per hour.
Let x represent how much greater these wind speeds are than the slowest hurricane. Therefore:
x ≥ 110 miles per hour - 74 miles per hour
x ≥ 36 miles per hour
This means that the winds speed must be 36 miles per hour greater than the slowest hurricane.
what is y=2x+4 written in standard form
HELP ME PLEASE I DONT UNDERSTAND
Can someone help me out please??
Answer:
X < 4
Step-by-step explanation:
-7 > 13 - 5X
-7 = 13 - 5X
-7 -13 = -5X
-20 = -5X
-20 /-5 = -5X /-5
4 = X
4 > X
X < 4
Answer:
Step-by-step explanation:
The height of a mountain is 26,400 feet. What is the height of the mountain in miles?
Step-by-step explanation:
Height of Mountain in feet = 26400 feet
Height of Mountain in Miles = 5 miles
Hope it will help :)
Answer:
5 milesfollow meI need help QUICK!!!!!!!!!!!!!!!!!!!!!!!!!!!