Answer: c
Step-by-step explanation:
Solution by substitution method
-2x+y=-5
2x-y=5
and 3x-2y=12
Suppose,
2x-y=5→(1)
and 3x-2y=12→(2)
Taking equation (1), we have
2x-y=5
⇒y=2x-5→(3)
Putting y=2x-5 in equation (2), we get
3x-2y=12
3x-2(2x-5)=12
⇒3x-4x+10=12
⇒-x+10=12
⇒-x=12-10
⇒-x=2
⇒x=-2→(4)
Now, Putting x=-2 in equation (3), we get
y=2x-5
⇒y=2(-2)-5
⇒y=-4-5
⇒y= -9
∴y=-9andx=-2
PROBABILITY!! Please help huge part of my grade will give BRAINLIEST or venmo you (only need the last 2)
Answer:
a record of all the mail that a mailbox identifies as Junk
The volume of the cylinder is 235.6 cubic feet. Find the height. Round your answer to the nearest whole number.
5 ft
h
Answer:
3 ft
as
the exact ans is 2.99975236 ft but after rounding off it becomes 3ft
welcome
24 please and all of the parts if you can!
Answer:
it's a
Step-by-step explanation:
because I saw a first
A family went out to eat. Below is the number of coen dogs tbat each of the four people ate. Find the mean absolute deviation (mad) of the data set.
Answer:
1.25
Step-by-step explanation:
Give the data:
X : 1 1/2 ___ 0 _____ 4 ______ 2 1/2
Mean absolute deviation (MAD) :
Σ|x - xbar| ÷ n
xbar = Σx/ n
Σx = (1 1/2 + 0 + 4 + 2 1/2) = 8
xbar = 8/4 = 2
|x - xbar| :
|1 1/2 - 2|= 1/2
|0 - 2| = 2
|4 - 2| = 2
|2 1/2 - 2| = 1/2
Therefore,
MAD = (1/2 + 2 + 2 + 1/2) / n
MAD = 5/4
MAD = 1.25
During bowling practice, Oscar rolled 14 strikes out of 70 attempts, What
percent of Oscar's attempts were strikes?
Answer:
20% or 0.2
Step-by-step explanation:
u do 14÷70=0.2
to get the percent you move the decimal two places right
0.2⇒20.0⇒20%
determine the length of side y, to the nearest tenth, in each of the following triangles. Please show work
The third grade class collected coins for the week.Class one raised 34.00. Class two raised 45.00 .Class three raised 76.00.How much did all three classes raise?(rounnd to the nearest tens
Answer:
160 well it was 155 but u round up to 160
Step-by-step explanation:
Answer:
34+45+76=155 Rounded to the nearest tens, would be $160.00
Step-by-step explanation:
pls help with math !
Answer:
181 Square cm.
Step-by-step explanation:
here is a weather thermometer three numbers have been left off. What numbers go in the boxes?
Answer:
Ask the question again and make sure to upload the photo.
Step-by-step explanation:
Is it A. , B. , C. , D.
And show your work
Answer:
C
Step-by-step explanation:
-
X
-3
-2
- 1
1
0
0
-27
-8
-1
1
Function?
Answer:
SASHAAAA
-Connie
Step-by-step explanation:
Which statement explains how you can use a number line to determine the number that is 4 more than -9?
A Go to -9 on the number line and then move 4 units to the left.
B Go to -9 on the number line and then move 4 units to the right.
Go to 4 on the number line and then move 9 units to the right.
Go to 9 on the number line and then move 4 units to the right.
Find the value of each variable in the given parallelogram
Answer:
I cant see it
Step-by-step explanation:
PLEASE HELP!!!!
CLICK PHOTO TO BE MORE CLEAR!! THANK YOU!!!!
Answer:
C. y = - 0.5 (x - 6)² + 18
Step-by-step explanation:
Because it is "Correct Answer"
3 What is the slope of the line that contains the coordinate points (8,-3) and (-2, 7)?
A -1
B -9/11
C -5/3
D -2/5
Answer:
c
Step-by-step explanation:
Daniel rides his bicycle at a rate of 7 miles per hour. At that rate, how long would it take him to ride 28 miles?
Answer:
4 hours
Step-by-step explanation:
because if you areriding at 7 miles an hour 7 can go into 28 4 times sk the answer would be 4 hours for 28 miles
deShawn bought 10 shirts for a total of $95 tee shirts cost $8 and long sleeve shirts cost $11 how many of each type of shirts did he buy
Answer:
5 long sleeve, 5 tee shirtd.
can u give me the answer
A what is a positive whole number greater than 1 that has only one and itself as factors?
the answer is a "prime number"
help me please
i need x
Answer:
x=42
Step-by-step explanation:
Just do 24/32 on calculator to get .75
Then multiply .75 by 56, the side you are looking for to get 42
help asap please!!!!!!
Step-by-step explanation:
[(-3 × 2 × (-4)] ÷ [-6 × 12]
[3 × 2 × -4] ÷ [-6 × 12]
[6 × -4]/[-6 × 12]
-4/(-1 × 12]
-4/-12
⅓
Option A is wrong
Option B is wrong -9/-18 = ½ not ⅓
Option C is correct = -24/-72 = ⅓
Option D is wrong = 9/-18 = -½ not ⅓
Jim's parents keep a chart on the wall where they mark how much Jim grows each year. When Jim was 15, he grew 1/4 of an inch and when he was 16, he grew 1/2 of an inch. In total, how much did Jim grow in during those two years?
Answer: 3/4 inch
Step-by-step explanation:
When Jim was 15, he grew 1/4 of an inch and when he was 16, he grew 1/2 of an inch.
His growth during those two years will be:
= 1/4 + 1/2
= 1/4 + 2/4
= 3/4 inch
His growth increased by 3/4 inches.
Amanda is saving money to buy a game. The game costs $24 , and so far she has saved three-fourths of this cost. How much money has Amanda saved?
Answer:
18
Step-by-step explanation:
Select the correct statement about the function represented by the table. X y 1 9 2 36 WIN 144 4. 576 5 2304 O A. It is a linear function because the difference between each * and y value is constant O B. It is a linear function because the yvalues increase by an equal difference over equal intervals of x-values. O C. It is an exponential function because the yvalues increase by an equal factor over equal intervals of x-values. D. It is an exponential function because the factor between each - and y value is constant.
The function is an exponential function because the y values increase by an equal factor over equal intervals of x-values.
What is an equation?An equation is an expression that shows the relationship between two or more numbers and variables.
At point (1, 9):
9 = ab¹
At point (2, 36):
36 = ab²
b = 4, a = 2.25
y = 2.25(4)ˣ
The function is an exponential function because the y values increase by an equal factor over equal intervals of x-values.
Find out more on equation at: https://brainly.com/question/2972832
#SPJ1
Could someone help me with this? :)
Answer:
-1/4x^2 -4x - 1
g(x)=-4x² - 3 find g(-3)
Answer:
-39
Step-by-step explanation:
just plug -3 into x
-4(-3)^2-3=-4*9-3=-36-3=-39
so, g(-3)=-39
hope this helped
Find the monthly growth rate as a percentage given this exponential function: f(t)=5,400(1.021)^t
Answer:
The monthly growth rate is 2.1%
Step-by-step explanation:
To find the monthly growth rate, we have to consider what is inside the bracket
Mathematically, what we have in the bracket should be written as;
1 + r
Thus;
1 + r = 1.021
r = 1.021-1
r = 0.021
This is same as 2.1%
please help mee , i will marl the brainliest .
Answer:
n = - 6
Step-by-step explanation:
Given k(x) then k(x) + n is a vertical translation of k(x)
• If n > 0 then a shift up of n units
• If n < 0 then a shift down of n units
Here k(x) has been shifted from (0, 0 ) to (0, - 6 )
That is a shift down of 6 units, then
p(x) = k(x) - 6
That is n = - 6
1. A triangle has side lengths of 1, 2, and 3. Can these lengths form a triangle? Use the Triangle Inequality Theorem to prove whether these lengths form a triangle. Show all work. DUE IN 1 HOUR
Step-by-step explanation:
step 1. the 3rd side of a triangle must be less than the addition of the other two sides
step 2. 3 is not less than the addition of 1 and 2
step 3. no. this cannot be a triangle.
Are the expressions 3(j+2)-2 and 2(j+1)+j equivalent
Answer:
No
Step-by-step explanation:
Distributing the 1st expression, we get 3j + 4.
Distributing the 2nd expression, we get 3j + 2.
3j + 4 does not equal 3j + 2