Answer:
-30
Step-by-step explanation:
Note the rules of signs. If one negative sign is directly next to a positive sign, it becomes a negative.
Subtract:
(-21) + (-9) = -21 - 9 = -30
C) -30 is your answer.
~
who wants to play surviv.io with me ill post the code
Answer:
Sure but later
Step-by-step explanation:
Answer:
Ok then post it
Step-by-step explanation:
Which of these strategies would eliminate a variable in the system of equations?
2x + 3y = -5
2x – 3y = 10
Choose all answers that apply:
It’s A and C
Step-by-step explanation:
Subtract the bottom equation from the top equation/ and add the equations
The volume of a box is 1800 cubic Inches. If the length of the box is 10 inches and its width is 3 inches more than its height, find the width and
height of the box.
Answer:
The width of the box is 15 inches and its height is 12 inches
Step-by-step explanation:
Equations
The volume of a box of width W, height H, and length L is given by:
V=W*L*H
We know
L=10 inches
W=H+3
V=1800 cubic meters
Substituting:
1800=(H+3)*10*H
Operating and swapping sides:
[tex]10H^2+30H=1800[/tex]
Dividing by 10:
[tex]H^2+3H=180[/tex]
Rearranging:
[tex]H^2+3H-180=0[/tex]
Factoring:
(H-12)(H+15)=0
The only positive and valid result is:
H=12 inches
Thus,
W=H+3=12+3=15 inches
The width of the box is 15 inches and its height is 12 inches
help help asap I WILL MARK BRAINLESLT
Parallel lines r and s are cut by two transversals, parallel lines t and u.
Lines r and s are crossed by lines t and u to form 16 angles. Clockwise from top left, at the intersection of r and t, the angles are 1, 2, 3, 4; at the intersection of s and t, 5, 6, 7, 8; at the intersection of u and s, 9, 10, 11, 12; at the intersection of r and u, 13, 14, 15, 16.
How many angles are alternate interior angles with angle 9?
Answer:
C
Step-by-step explanation:
I did the quiz on Edg
PLEASE ANSWER ASAP
How many nitrogen (N) atoms are there on the reactant side? on the product side?
N2 + H2 --> NH3
1. 2; 3
2. 3; 2
3. 2; 1
4. 1; 2
Answer:
2;1 It shows 2 on the reactant side and it doesn't have a 2 next to it in the product side
Step-by-step explanation:
sorry if that didnt help you
Read and Answer
try ur best :)
Answer:
49
I looked it up
Farmer Jim keeps 12 hens in every coop. If Farmer Jim has 20 coops, how many hens does he have in all? If every hen lays 9 eggs on Monday, how many eggs will Farmer Jim collect on Monday? Explain your reasoning using words, numbers, or pictures
Answer:
87
Step-by-step explanation:
hopes this helps
Answer:
2160 eggs on Monday
Step-by-step explanation:
Jim keeps 12 hens in every coop but Jim has 20 coops
12x20=240 hens
Every hen lays 9 eggs = 12x9= 108 eggs for 1 coop
108x20 = 2160 for 20 coops on Monday
What might a robot in the nurse's office do in the future?
Answer:
its so simple
how do you not know
the answer is examine peoples injury what else would be
Help me out pleaseeeeee
Answer:
5 and 0
Step-by-step explanation:
The answer to x > -45, are all number that are larger than -45.
5: Is 50 larger than -45
-100: Is 55 smaller than -45
-50: Is 5 smaller than -45
0: Is 45 larger than 45
5 and 0 are correct because they are both larger than -45.
Answer:
Well from the question I can only confirm that X (-45, infinity) is the possible answer. The answer would be A and D because 5 is greater than -45, while 0 is also greater than -45.
How do I step by step solve a substitution equation?
Solve this equation by substitution:
3x-3y=4
-x+y=-4
Answer:
No solution
Step-by-step explanation:
Set -x+y=-4 to y
y=x-4
Substitute y into 3x-3y=4 and solve for x
3x-3(x-4)=4
3x-3x+12=4
12[tex]\neq[/tex]4
No solution
i really need help ok
Answer:
Jim ran 60 miles
Step-by-step explanation:
T (Toby) - 5 miles
K (Katie) - 4T , 4(5), 20
J (Jim) - 3K, 3(20), 60
Answer:
Jim ran 60 miles.
Step-by-step explanation:
First off I would take note of the information given.
Toby = t
Kate = k
Jim = j___________________________________________
j = 3k
t = 5
4t = k
Since we already know Tim ran 5 miles we multiply 5 x4 to get 20. So Kate ran 20 miles.
3 times Kate's amount is Jim's. So 20 x 3 = 60.
Hope that helps and have a great day!
Determine whether the equation 6x^2+y=4 is a linear
Answer:
No
Step-by-step explanation:
This equation is not linear because it has an exponent greater than 1.
HELP ASAP!!! I need help with 2 problems so please help me!! Don’t ask dumb questions to get points, be kind and help me!!
3a(a+1)-5=3a-2
PLEASE HELP
GOOD DETAIL PLEASE
Answer: 3a to the second power minus three/ 3a^2 - 3
Step-by-step explanation:
3a (a + 1) - 5 = 3a - 2 Given
3a^2 + 3a - 5 = 3a - 2 Distributive prop
+ 2 + 2 Addition property
3a^2 + 3a - 3 = 3a Simplify
- 3a - 3a Subtraction prop
3a^2 - 3 Simplify
The Moores paid $8 more for skate rentals than the Cotters did. Together, the two families paid $40 for skate rentals. The skate rentals are $4 each. How many pairs of skates did the Moores rent? Explain how you found your answer.
Answer:
the Cotters paid 16 dolars
Step-by-step explanation:
PLS HELP WITH these TWO QUESTIONS
Answer:
7. x = 28
8. x = 70
Step-by-step explanation:
7. 180 - 90 - 62 = 28
x = 28 (By i think the alternate interior angles theorem, haven't done geometry in a while so sorry if thats not the right theorem).
8.
180 - 110 = x
180 - 110 = 70
x = 70
Supplementary angles theorem.
A new hospital in Springfield starts out with 11 junior residents and 5 senior readings on its staff. Management plans to to hire additional personnel at a rate of 1 junior resident per month and 3 senior residents per month. Eventually there will be an equal number of each on the hospital staff. How long will that take? How many of each type will be there be?
Answer:
3 months
14 of each type of staff
Step-by-step explanation:
Starting employees
Junior residents = 11
Senior readings = 5
Additional personnel at a rate of 1 junior resident per month and 3 senior residents per month
Junior residents = 11 + m
Senior readings = 5 + 3m
Where,
m = number of months
How long will that take?
Equate both expression
11 + m = 5 + 3m
11 - 5 = 3m - m
6 = 2m
Divide both sides by 2
m = 6/2
= 3
m = 3 months
Junior residents = 11 + m
= 11 + 3
= 14
Senior readings = 5 + 3m
= 5 + 3(3)
= 5 + 9
= 14
WHAT PROPERTY IS 26•1=26
Answer: Identity Property of 1
Step-by-step explanation:
The Identity Property of 1 states that any number times 1 will be that number.
This is the Identity Property of 1.
Hope this helps!
Identity Property of 1
Step-by-step explanation: any number x 1 = same number
what is a square plus b square equal c square.
Answer:
I am trying to do this for points sorry
Step-by-step explanation:
And it equals E square
At a certain company, the monthly salary of project managers can be modeled by the function f(x)= x^4 -10x^2+10,000 where x is the number of years of employment. After how many years would a project manager be eligible for a $20,000 monthly salary?
Answer:
Given
Step-by-step explanation:
Given the monthly salary of project managers modeled by the function
f(x)= x^4 -10x^2+10,000
To know the number of years that a project manager be eligible for a $20,000 monthly salary, we will substitute f(x) = 20,000 and solve for x as shown:
20,000 = x^4 -10x^2+10,000
x^4 -10x^2 = 20000-10000
x^4 -10x^2 = 10,000
x^4 -10x^2 - 10,000 = 0
(x^2)^2-10x^2 - 10000 = 0
let P = x^2
P^2 - 10P -10000 = 0
P = 10±√10²-4(-10000)/2
P = 10 ±√100+(40000)/2
P = 10 ±√40100/2
P = 10 ±200.2/2
P = 210.2/2
P = 105.1
Since P = x^2
105.1 = x^2
x = √105.1
x = 10.25
Hence it will take like after 10 years for the manager to earn a $20,000 monthly salary
Answer:
10 1/4
Step-by-step explanation:
A lawnmower that regularly sells for $150 is on sale for $120. The price was decreased by percent.
Step 1:
Let us first find the decrease in amount.
Decrease in amount = 150 -120 = $30
Step 2:
Now let us find the ratio of decrease in price to original price.
So the ratio is 1/5 or in decimal its 0.2.
Step 3:
To find percentage decrease we change this decimal number 0.2 two places to the right side, so it becomes 20 %
The price decreased by 20%
If m<1 = 89', what is m<5?
A. 1
B. 89
C. 91
D. 179
Answer:
m∠5 = 91°
Cuz i just know
Is (-2,-4) a solution of the system y=2x and 3x+2y=1 ?
Answer:
No
Step-by-step explanation:
Hope This Helps!
Plz Mark Brainliest!
ASAP!!!!!!!!!!!! I NEED HELP
Answer:
ask your teacher for help
Step-by-step explanation:
Find The value of c so that the polynomial p(x) is divisible by (x+2)
Answer:8
Step-by-step explanation:
Define a variable, set up an equation, then solve.
A moving truck costs $18 per hour to use plus a $44 service fee. If the total bill was $152, how many hours was the truck rented?
An online movie streaming plan has no annual fee but charges $4.25 per movie watched. Another plan charges an annual fee of $36 plus $3.50 per movie watched. For how many movies is the cost of the plans the same?
EMERGENCY! Please give me the correct answer!
Answer:
12
Step-by-step explanation:
2²+2³means 2×2+2×2×2=4+8=12
A company makes steel rods shaped like cylinders. Each rod has a diameter of 6 centimeters and a height of 40 centimeters. The company uses, on average, 48,607cm^3 of steel each hour to make these rods. How many rods does the company make, on average, each hour?
Answer:
The number of rods used by the company is 43 rods/hour
Step-by-step explanation:
Given;
diameter of the cylinder, d = 6 cm
radius of cylinder, r = d/2 = 3 cm
height of the cylinder, h = 40 cm
Volume of the steel rod is given by;
V = πr²h
V = π(3)²(40)
V = 1131.12 cm³
The number of rods used by the company on average each hour is given by;
[tex]n = \frac{48,607 \ cm^3}{hour} *\frac{1}{1131.12 \ cm^3}\\\\ n = 43 \ rods/hour[/tex]
Therefore, the number of rods used by the company is 43 rods/hour
What is the equation of this line in slope-intercept form?
y=−3x+2
y=−13x+2
y = 3x + 2
y=3x−2
Number graph ranging from negative 5 to 5 on the x and y axes. A line is drawn on the graph that passes through the labeled points begin ordered pair negative 1 comma 5 end ordered pair and begin ordered pair 1 comma negative 1 end ordered pair
The correct answer would be "y = −3x + 2" aka option A