Answer: 8 (I might have gotten it wrong tho) could be -8 too btw.
Step-by-step explanation:
42x9=378 and 9x4=36. 9x30=270 so that would make the equation 378-36=270-9(_). Simplified a bit more would be 342=270-9(_). Now subtract 270 from both sides you get 72=9(_) so it would be 8. Sorry if I’m wrong tho.
Answer:
9(42) - 9(4) = 9(30) - 9(-8)
Step-by-step explanation:
9(42 - 4) = 9(38)
9[30 - (-8)] = 9(38) because of rules of subtracting integers is:
Two like signs become a positive sign
Example:
3+(+2) = 3 + 2 = 5
6−(−3) = 6 + 3 = 9
Two unlike signs become a negative sign
Example:
7+(−2) = 7 − 2 = 5
8−(+2) = 8 − 2 = 6
find the midpoint between each pair
(4,8) and (-6,3)
Answer:
12,-1.5
Step-by-step explanation:
(4,8)
4+8
12
12/2
6
(-6,3)
-6+3
-3
-3/2
-1.5
Answer:
12,-1.5
Step-by-step explanation:
If a-b, a+b are the zeros of x^2-4x+3 then (a, b) =
A) (3, 1)
B) (-3,-1)
C) (2, 1)
D) (-2,-1)
α - β , α + β are the zeroes of x² - 4x + 3.
Find:The coordinates of (a,b)
Solution:(Let a = α & b = β).
On comparing with standard form of a quadratic equation i.e., ax² + bx + c = 0 ;
Let ;
a = 1
b = - 4
c = 3.
We know that,Sum of the zeroes = - b/a
⟹ α - β + α + β = - ( - 4)/1
⟹ 2α = 4
⟹ α = 4/2
⟹ α = 2
And,
Product of the zeroes = c/a
⟹ (α - β) * (α + β) = 3/1
(a + b) * (a - b) = a² - b².
⟹ α² - β² = 3
Putting the value of α we get,
⟹ (2)² - β² = 3
⟹ 4 - 3 = β²
⟹ 1 = β²
⟹ √1 = β
⟹ 1 = β
∴(a , b) = (α , β) = (2 , 1). (Option - C).
I hope it will help you.
Regards.
Answer:
Siso your answer refer in pic
Ronnie buys 2 pairs of shoes for $50. Write an equation relating the total cost y to the number of pairs of shoes x.
Answer
Step-by-step explanation:
Andrea needs to purchase 2.8 pounds of bananas that cost $0.60 per
pound and 3 pounds of apples that cost $0.77 per pound. If she gives
the cashier $10.00, how much change will she receive?
A $2.31
B. $3.99
c. $6.01
D. $7.99
What is the difference between
-30.7 and -8.5?
Answer:
-22.2
Step-by-step explanation:
-22.2
well, the system told me that i need a 20 words explanqtion so i'. just typing this down to put in more words but how i solved it, is i used a calculator
While sorting some change into piggy banks, Rachel put 5 coins in the first piggy bank, 6 coins in the second piggy bank, 8 coins in the third piggy bank, and 11 coins in the fourth piggy bank. If this pattern continues, how many coins will Rachel put in the fifth piggy bank? coins
Answer:
15 coins
Step-by-step explanation:
There is a pattern. She adds 1 coin, then 2, then 3. She will add four to the next piggy bank.
Which absolute value equation represents numbers with a distance of 5 from 0?
A 2 = -5
B 2 + 5 = 0
C 2 – 5 = 0
D 2 = 5
Answer:
A = -5 is the answer your welcome
Determine the graph that represents the equation 2x - 10y = -20. (1 point)
Answer:
look at the picture
Step-by-step explanation:
i need help pls
pls explain it if you can :)
Answer:
yea see when i learned this we had to subtract the input to the out put and then divide all the answers to get 1 single out come
Step-by-step explanation:
Question 2
Find the slope of a line that passes through the given points.
(-8, -11) and (17, 4)
Answer:
slope = 0.6
Step-by-step explanation:
help please............................................
Answer: C
Step-by-step explanation:
HELP ME PLEASE!!!!! ITS EASY 10 POINTS
Answer:
x=3
Step-by-step explanation:
Answer:
x = 3
Step-by-step explanation:
I did this on a quiz and I got it right :)
What is the value of x in the figure below?
Answer:
i think its 18 sowwy if this is wrong
Step-by-step explanation:
can someone solve this problem
9514 1404 393
Answer:
discriminant: -232 complex solutionsStep-by-step explanation:
Compare the equations ...
ax² +bx +c = 0
x² -x +6 = 0
and you can see that the values of a, b, c are ...
a = 1, b = -1, c = 6
Putting these values into the expression for the discriminant, ...
d = b² -4ac
we have ...
d = (-1)² -4(1)(6) = 1 -24 = -23
The discriminant is -23.
__
The interpretation of the discriminant is ...
negative -- 2 complex solutions
zero -- one real solution
positive -- 2 real solutions
Here, the discriminant is negative, so ...
The equation has 2 complex solutions.
Ut of a group of 145 students that were surveyed about sports, 31 said they play basketball and 59 said they play soccer. 18 of the students who said they play basketball said they also play soccer. If a student is chosen at random, find the probability.
Answer:
0.5806
Step-by-step explanation:
Out of a group of 145 students that were surveyed about sports, 31 said they play basketball and 59 said they play soccer. 18 of the students who said they play basketball said they also play soccer. If a student is chosen at random, find the probability. P (Soccer |Basketball).
Solution:
P(soccer) = number of students playing soccer/ total number of students.
P(soccer) = 59/145
P(basketball) = number of students playing basketball/ total number of students.
P(basketball) = 31/145
P(soccer and basketball) = number of students playing soccer and basketball/ total number of students.
P(soccer and basketball) = 18/145
From Bayes theorem:
P(A | B) = P(A ∩ B) / P(B)
Hence:
[tex]P(soccer|basketball)=\frac{P(soccer\cap baketball)}{P(basketball)}=\frac{\frac{18}{145} }{\frac{31}{145} } =0.5806[/tex]
In the multiplication table below, patterns of equivalent ratios can be found in
rows only
columns only
both rows and columns
neither does nor columns
Answer: the third option
Step-by-step explanation:
Javier buys 4 candy bars for $12. What is the constant of
proportionality, k? *
A k=0.75
Bk= 0.33
C k=3
D k=48
Answer:
Your answer would be C. K = 3
Step-by-step explanation:
Answer:
your answer should be three
Step-by-step explanation:
12 divided by 4 equals 3
I HAVE TO TURN THIS IN 5 MIN!!!
WILL MARK BRAINLIEST!!!
What is the slope of the image below?
Answer:
x= -2
Step-by-step explanation:
Which of the equations are true identities? A. (x-2y)^2=x^2-4xy+4y^2 B. (m+1)^2-m^2=1
Answer:
Only A
Step-by-step explanation:
please answer all im begging you
Answer:
b. 6.4
c. 1.2
d. 1.32
Step-by-step explanation:
Answer:
1. 6.4
2. 1.2
3. 1.32
Step-by-step explanation:
How to solve the addition of integers?
To add integers having the same sign, keep the same sign, and add the absolute value of each number. To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest. Subtract an integer by adding its opposite.
How to solve the subtraction of integers?
To subtract integers, change the sign on the integer that is to be subtracted. If both signs are positive, the answer will be positive. If both signs are negative, the answer will be negative. If the signs are different subtract the smaller absolute value from the larger absolute value.
Find mZT.
35
25°
R
T
Answer:
you have to post a pic with the problem
Step-by-step explanation:
there's a button that looks like a clip of you press that it'll give you a option to take a photo
Lsat month, harri drove 850 miles in his car. his car's fuel consumption is 45.6 miles per gallon. petrol cost £1.09 per litre. given that 8pints = 1gallon, work out how much Harri spent on fuel last month. You must show working out.
Answer:
£76.904
Step-by-step explanation:
Lsat month, harri drove 850 miles in his car. his car's fuel consumption is 45.6 miles per gallon. petrol cost £1.09 per litre. given that 8pints = 1gallon, work out how much Harri spent on fuel last month. You must show working out.
a) 45.6 miles per gallon
45.6 miles = 1 gallon
850 miles = x
Cross Multiply
x = 850/45.6
x = 18.640350877 gallons
b) 8pints = 1gallon,
8 pints = 3.785 litres
1 gallon = 3.785 litree
18.640350877 gallons = y
Cross Multiply
18.640350877 litres × 3.785
= 70.5537280694 gallons
c) 1 litres = £1.09
70.5537280694 litres = z
Cross Multiply
z = 70.5537280694 × £ 1.09
z = £76.9035635957
Approximately = £76.904
Answer:
Step-by-step explanation:
Lsat month, harri drove 850 miles in his car. his car's fuel consumption is 45.6 miles per gallon. petrol cost £1.09 per litre. given that 8pints = 1gallon, work out how much Harri spent on fuel last month. You must show working out.
a) 45.6 miles per gallon
45.6 miles = 1 gallon
850 miles = x
Cross Multiply
x = 850/45.6
x = 18.640350877 gallons
b) 8pints = 1gallon,
8 pints = 3.785 litres
1 gallon = 3.785 litree
18.640350877 gallons = y
Cross Multiply
18.640350877 litres × 3.785
= 70.5537280694 gallons
c) 1 litres = £1.09
70.5537280694 litres = z
Cross Multiply
z = 70.5537280694 × £ 1.09
z = £76.9035635957
Approximately = £76.904
the vaule of x is 5 2x+ 1 2x=9+ 9 2x
Answer:
I just know the answer hope this helps x= -9/28
One pipe can fill a tank in 8 minutes. A second can fill it in 12 minutes, and a third can fill it in 24 minutes. If the tank is empty, how long will it take the three pipes, operating together, to fill it?
Answer:
This is a trick answer but the answer is 24 minutes
Step-by-step explanation:
They have already added up the time and its 24 if you read 1 is 8 the second is 12 and 3 pipes are 24
Also lemme get brainlist
Answer:
4.8 min (4 min 48 seconds)
Step-by-step explanation:
In one minute:
Pipe A fills the tank 1/8th full
Pipe B fills the tank 1/12 full
Pipe C fills the tank 1/24th full
1/8 + 1/12 + 1/24 = 5/24
So the the at which they will fill the tank is 24/5,
or 4.8 minutes (4 minutes 48 seconds)
50 POINTS
What is the range of the function f(x) = (x-1)^2
when the domain is {-4,0,4}
A- {1,9,25}
B- {-10,-2,6}
C- {1, 15}
D- {1,17}
Answer:
The answer is A
Step-by-step explanation:
you can refer to the picture that i have given
2312.2+3.4 what is the value expression
Answer: 11578 /5 =2315.60000
Explaination: STEP 1: Simplify: 17/5
Equation at the end of step 1: 23122/10 + 17/5
STEP 2 : Simplify 11561/5
STEP 3: Adding fractions which have a common denominator. Adding fractions which have a common denominator
Combine the numerators together, put the sum or difference over the common denominator then reduce to lowest terms if possible:
11561+ 17/5= 11578/5
Final Answer: 11578/5 Brainliest pls
Answer:
2315.6 (Fraction= 2315 3/5)
Step-by-step explanation:
2312.2 (2312 1/5) + 3.4 (3 2/5) = 2315.6 (2315 3/5)
What is 7,260 divided by 83
Answer:
87.46987952
Step-by-step explanation:
7260/83=87.46987952
The play director 790 hours preparing for a plane that time include attending 35 rehearsals that took varying amount of time in spending 93 3/4 hours on the other responsibilities related to the play. What question does the equation 3/5 x + 93 3/4 equal 190 help answer? A. How much longer did the director spend on rehearsals and on other responsibilities? B. What was the average length of each rehearsal? C. How long was each rehearsal?
Complete question :
The play director 190 hours preparing for a plane that time include attending 35 rehearsals that took varying amount of time in spending 93 3/4 hours on the other responsibilities related to the play. What question does the equation 3/5 x + 93 3/4 equal 190 help answer? A. How much longer did the director spend on rehearsals and on other responsibilities? B. What was the average length of each rehearsal? C. How long was each rehearsal?
Answer: C. How long was each rehearsal?
Step-by-step explanation:
Total time spent preparing for play = 790 hours
Of the 190 hours :
Number of rehearsals = 35
Others = 93 3/4 hours
What question does the equation 35 x + 93 3/4 equal 190
35x + 93 3/4 = 190
(Number of rehearsals) * x + others = total time
x = time spent on each rehearsal
35x = 190 - 93 3/4
35x = 96.25
x = 96.25 / 35
x = 2.75 hours
Each rehearsal took 2.75 hours
(0,-4) , (8,4) writing equations in slope intercept form write an equation of each line that passes through the given points answers please
Answer:
y = x - 4
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (0, - 4) and (x₂, y₂ ) = (8, 4)
m = [tex]\frac{4+4}{8-0}[/tex] = [tex]\frac{8}{8}[/tex] = 1
The line crosses the y- axis at (0, - 4 ) ⇒ c = - 4
y = x - 4 ← equation of line
Which order pair could you remove to make this a function?
(1, 3) (5, 0), (5, 3), (4, 0), (3, 3)
Answer: (5,0)
Step-by-step explanation:
You could remove this one, because for each input (x) there can only be 1 output (y)
So by removing (5,0) this becomes a function. 5 only has one output now, (3)