Answer:
b= (2a+11)/5
Step-by-step explanation:
5x + 2y = 9
2y=9-5x
y= 9/2 - 5x/2
slope, m1= -5/2
for perpendicularity, m1 × m2 = -1
slope for QR= m2=
[tex] = - 1 \div \frac{ - 5}{2} = - 1 \times \frac{2}{ - 5} = \frac{ - 2}{ - 5} = \frac{2}{5} [/tex]
m2 is 2/5
[tex]qr = \frac{b - 3}{a - 2} [/tex]
[tex] \frac{2}{5} = \frac{b - 3}{a - 2} [/tex]
5(b-3)=2(a-2)
5b-15=2a-4
5b=2a-4+15
5b= 2a+11
[tex]b = \frac{2a + 11}{5} [/tex]
An expression for b in terms of a is b = (2a + 11)/5.
What are lines and their slopes?We know lines have various types of equations, the general type is
Ax + By + c = 0, and the equation of a line in slope-intercept form is
y = mx + b.
Where slope = m and b = y-intercept.
the slope is the rate of change of the y-axis with respect to the x-axis and the y-intercept is the (0,b) where the line intersects the y-axis at x = 0.
Given an equation of a line 5x + 2y = 9 ⇒ 2y = - 5x + 9 ⇒ y = (-5/2)x + 9/2.
So, the slope of the line parallel to QR is the slope negative reciprocal of (-5/2) which is (2/5).
We know slope m = (b - 3)/(a - 2).
∴ (2/5) = (b - 3).(a - 2).
2(a - 2) = 5(b - 3).
2a - 4 = 5b - 15.
2a + 11 = 5b.
b = (2a + 11)/5.
learn more about lines and slopes here :
https://brainly.com/question/3605446
#SPJ6
Sonia is older than her brother Eddie.The sums of their ages is 38.The differences is 14
Answer:
Sonia is 26
Eddie is 12
Step-by-step explanation:
HELP
HELP
ITS HARD
pls pls pls pls pls
4 + 6 (3) + 2(5 1/2 - 1)
It says Use the distributive property to write the following in expanded form.
4(x+y)
write the expression using the WIRIS editor button
Answer:
pretty sure it's 4x+4y however I'm not 100 percent sure
Help me please!
If you get it right, I’ll will brainliest u!!
Answer:
Angle S is a straight angle.
Step-by-step explanation:
180° is a straight line.
What is the value of p(b-c) when b=3,c=3 and p=-2
Answer:
0
Step-by-step explanation:
-2 (3 - 3)
distribute: -6 + 6
add: -6 + 6 = 0
Answer:
0
Step-by-step explanation:
p=-2,b=3,c=3
p(b-c)
-2(3-3)
-2(0)
0
or-2(3-3)
-6+6
0
hope it's helpful ❤❤❤❤
THANK YOU.
#
1. Which inequality represents this situation? At least 25 cats are on my
porch.
Answer:
Step-by-step explanation:
cats=c
at least it means that there are 25 minimum
c[tex]\geq[/tex]25
Factorise fully
10z -80
Answer:
10(z-8)
Step-by-step explanation:
if you have to factor you have to have something like
number *number or number* parenthesis
10z - 80 is number *number -number so change
10 *(z-8)
what is the area of the figure below?
what does 3x+8+9x^2 equal?
Answer:
Stays the same. OR Standard form: 9x^2+3x+8
Step-by-step explanation:
You can't factor it. When you add them it's the same bc, you can't combine anymore like terms. let me know if this helps at all? What is your objective? Tryna factor? Add polynomials? ???
Right answer gets brainlist
Answer:
2057
Step-by-step explanation:
ez pls just osmoene help
Which answer below represents the following mixed radical written as an entire radical?
3a2b3 18a7b113
Select one:
a. 486 a13b20 3
b. 45 a13b20 3
c. 54 a9b14 3
d. a 54 a3b14 3
A ceramic vase that cost an antique store $5 was marked $20. What is the percentage markup on the price of the ceramic vase?
15%
75%
300%
400%
What is 2 + 3/8?
Please helpp!!
Answer: 2 + 3/8 is 2 3/8, 19/8, or 2.375
Step-by-step explanation:
Factor.
y^2-12y+20
i need help
Answer:
(y−10)(y−2)
Step-by-step explanation:
Find the sequence and fill in the blanks
(2, 3), (4, 6), (6, 9), (8, 12) ....
The 8th group is (__, __)
Step-by-step explanation:
(8×2,8×3)
(16, 24)
............
Alonzo has completed 44 Deliveries so far this week he needs to make 55 deliveries for the week what percentage of his delivery has Alonzo completed?80%
Answer:
80%
Step-by-step explanation:
Find 44/55 and multiply the result by 100%: (0.8)(100%) = 80% (completed)
1. A jar contains 10 marbles, 6 marbles are red, and 4
marbles are blue. If 2 marbles are chosen one at a time
with replacement, what is the probability that the first
marble will be blue and the second marble will be red?
A 1/10
B.6/100
D. 1/25
Independent or Dependent?
Final Answer:
Answer:
1/20
Step-by-step explanation:
trust me............or not...jk its either 1/20 or 1/2 NO its 1/20
A shark can swim at an average speed of 25 miles per hour. At this rate, how far can a shark swim in 2.5 hours?
Answer:
62.5 miles in 2.5 hours
Hope this helped.
Hey I need help with this one question I don’t understand it brushed endnoteyrndjfnfjfjfiffj
Please help!!! Thank you!!!!!
Answer:
Its the third answer choice
Step-by-step explanation:
Hope this helps
I need answer ples ASAP
Answer:
g
Step-by-step explanation:
g
Which list orders the numbers from least to greatest?
Answer:
D)
Step-by-step explanation:
I hope this helps :)
simplify (4m+5n)^2+(5n+4n)^2
Answer:
16m^2+40mn+106n^2
Increase £16470.45 by 3.5%
SOMEONE PLEASE HELP ME T-T
Shania has 12 coins in her pocket. Of these coins, 5 are pennies and 7 are dimes. Shania randomly selects one coin from her pocket and, without replacing it, selects another coin from her pocket. What is the probability that both coins are dimes?
Answer:
10/12
Step-by-step explanation:
Answer:
10/12
Step-by-step explanation:
Maria sells a motorcycle for $5,000 and a car for $25,000. What is the total commission that she will earn on the sale of these two vehicles?
Maria will make 10% on 5,000 for the motorcycle and 15% on 25,000 for the car she sold
What is the area of this triangle?
A=bh2
17 m²
30 m²
60 m²
120 m²
Answer:
120
Step-by-step explanation:
alls you do is plug in the numbers its not hard sweetie
Answer:
120 m2
Step-by-step explanation:
I took the test hope this helps
Which of these cannot represent the lengths of the sides of a right triangle?
A.)3 ft, 4 ft, 5 ft
B.)6 in., 8 in., 10 in.
C.)16 cm, 63 cm, 65 cm
D.)8 m, 9 m, 10 m
Tammy jumped up 9 steps. Each step was
7/10 feet high.
How high up did she jump altogether?
Write your answer in simplest form.
Answer: 6 and 3/10 0r 63/10
Step-by-step explanation: