Answer:
25% of 80 is D. 20kg
Step-by-step explanation:
50% of 80 is 40 and we know that 25% is half of 50%, so half of 40 would be 20.
So, the answer is D. 20kg
Hope this helps! :)
How old am I if, eighty reduced by 2 times my age is fifty-six
Solve the system of equations using substitution. y = -7x 2x – y = -9
Answer:
x = -1
y = 7
Step-by-step explanation:
We have a system of equations and are asked to solve using substitution.
y = -7x
2x - y = -9
Since we have an equation for y by itself, we can plug the first equation into the second.
2x - (-7x) = -9
Distribute :
(-(-7x))
2x + 7x = -9
Add like terms :
9x = -9
Divide 9 by both sides to get x :
x = -1
Now that we know x, we can plug it into the first equation to find y :
y = -7(-1)
y = 7
-2x -x + 8 please answer
Answer:
=−3x+8
Step-by step explanation:
general sequence of 8,3-2,-7
Answer:
x - 5
Reason
8 - 5 = 3
3 - 5 = -2
-2 - 5 = -7
Which of the following word problems can be solved using the equation 4(x + 8) = 40?
O
A square has a side length of Xinches. Each side of the square will be increased by 8 inches to create a larger square. If the larger square has a perimeter of
40 inches, what is the side length, in inches, of the original square?
Four friends share a box of cookies. After each friend receives x cookies, there are still 8 cookies left in the box. If there were initially 40 cookies in the box, how
many cookies did each friend receive?
A student has four bags of marbles. Each bag originally has x marbles. After taking out 8 marbles from each bag, there is a total of 40 marbles in the bags.
How many marbles were originally in each bag?
Oscar has 8 stacks of trading cards. Each stack originally has x trading cards. He adds 4 cards to each stack giving him a total of 40 trading cards. How many
trading cards did Oscar originally have?
Answer:
4(x+8)=40
4x+ 32= 40
4x=40-32
4x=8
x=8/4
x=2/1
Marco has a bag of red, blue, and green tiles. Which set of events would be considered independent?
A) A tile is drawn and replaced, and then a second tile is drawn.
B) A tile is drawn and removed, and then a second tile is drawn.
C) A red or blue or green tile is drawn.
D) Two tiles are drawn at the same time.
Answer:
45
Step-by-step explanation:
Find the ratio of the following
Smita works in office for 6 hours and Kajal works for 8 hours in her office. Find the
ratio of their working hours.
Answer:
6:8 = 3:4
Step-by-step explanation:
Smita = 6
Kajal = 8
Ratio = 6:8
Simplified ratio = 3:4
I hope Im right!!
Answer:
the answer is 3:4 you put 6:8 and you check if you can simplify in this case you can so u simplify them by 2 and the final answer is 3:4
Can u do these for me plz fast
Answer:
nothing is there?
Step-by-step explanation:
Answer:
please there is no question
Step-by-step explanation:
where are the questions
There are 9 people in an office with 5 different phone lines. If all the lines begin to ring at once, how many groups of 5 people can answer these lines?
Answer:
1
Step-by-step explanation:
if it was 10 it would be 2, but it isnt. and it cant be a number with a decimal cause i would be surprised if a math problem has it where you cut people in half or portions
Which number rounds to 260 when rounded to the nearest 10?
Answer:5, 6, 7, 8, or 9.
Step-by-step explanation:
2. Which of the following ordered pairs (x,y) satisfies the system of equations below?
x + y = 0
3x – 2y = 10
(3,2)
b. (2,-2)
(-2, 2)
d. (-2,-2)
a.
C.
timotor the nrice of a inh, in dollars, using the expression 60+
Answer:
x=2, y=-2
(2, -2)
Step-by-step explanation:
x + y = 0
3x - 2y = 10
3x - 2(0 - x) = 10 ( 2(0 - x) = -2x )
3x - (-2x) = 10 ( y = -x )
3x + 2x = 10
5x = 10
x = 2
Hope i helped, feel free to ask questions :D
Have a good day!
Hello! I really need help!
“Mary has a container filled with 20 oz of cereal. Each day she eats 4.5 oz of cereal.”
A. Write an expression to represent the amount of cereal left after x days.
B. How many ounces of cereal will she have after 4 days
Answer:
yh
Step-by-step explanation:
what GCF of 22 and 30
Answer:
2
Step-by-step explanation:
2(2.25x+8) tell me pls :(
Answer:
9x+32
----------
2
Step-by-step explanation:
Item 8 What is 31.5632 rounded to the nearest tenth?
Answer:
31.6
Step-by-step explanation:
Help me with my math **50 pts** I mark brainliest**
Step-by-step explanation:
<1+<2=180
<2+<3=10
<1+<2=<2+<3=180
<2
<2
What are the multiples of 5 starting from 100?
Answer:
100;105;110;115;120;125;130;135;140;145;150;155;160....
Step-by-step explanation:
Answer:
100, 105, 110, 115, 120, 125, 130 135 140 145 150 155 160 165 170 175 180 185 190 195 200
Step-by-step explanation:
The triangles below are similar. By what ratio was triangle XYZ enlarged by to create triangle LMN? Use this information to calculate the length of the missing side. Show your work.
Answer:
Ratio: 3:2
LN = 18
Step-by-step explanation:
"similar" means that all the angles are the same and the sides were all increased by the same proportion.
Thus, we know that MN/YZ = LM/XY = NL/ZX
First, we need to find the ratio. To do this, we write MN/YZ as a fraction, and simplify.
MN/YZ = 15/10 = 3/2
(If you want, you can double check this using LM nd XY. 8 * 3/2 = 12, so this is correct)
To find the missing side, we simply multiply XZ by 3/2.
12 * 3/2 = 18, so LN = 18.
A doctor told a patient to drink 1.6 liters of water every day. About how many liters should the patient drink in 14 days?
Answer:
22.4
Step-by-step explanation:
hope it helps
Answer:
The correct answer is 22
Step-by-step explanation:
22.4 to the nearest whole number would be 22.
The
home team had 4 three-pointers,
10 two-pointers, and 6 free throws. The
visiting team scored 5 three-pointers,
8 two-pointers, and 5 free throws. Which
team scored more points?
Answer:
home team
.............................................................................................
If home team had 4 three-pointers, 10 two-pointers, and 6 free throws. The visiting team scored 5 three-pointers, 8 two-pointers, and 5 free throws. Then Home team scored more points.
What is Addition?Addition is a process of combining two or more numbers.
For Home team,
4 three-pointers,
10 two-pointers, and
6 free throws
4+10+6
Four plus ten plus six
20
For visiting team
5 three-pointers,
8 two-pointers, and
5 free throws
5+8+5
Five plus eight plus five
18
As we observe 20 is greater than 18, so home team scored more than Visiting team.
Hence Home team scored more points.
To learn more on Addition click:
https://brainly.com/question/29053821
#SPJ2
Pre algebra 45.3n = -181.2 what is n?
Answer:
N= -4
Step-by-step explanation:
Just divide both sides by 45.3 to isolate the variable (n).
Hope this helped :)
The answer is n=-4
If this answer helped you then please mark it as brainliest so I can get to the next rank
solve for x
2x+9≤27
(10 points worth)
Answer:
x = 9
Step-by-step explanation:
First, subtract 9 from both sides, and you are left with 2x < 18. Then, divide 18 by 2 to get 9. I hope this helps :)
The value of x is 9.
To find x
2x+9≤27Subtract 9 from both sides we get,
2x ≤18
Divide 2 from both sides,
x≤9.
Hence, the value of x is 9.
Learn more about find x here https://brainly.com/question/11979991
#SPJ2
-100 = -t/5 - 4
Find t please! (also explain)
Answer:
t = 480
Step-by-step explanation:
When we have equations with variables, we always want to isolate the variable, so lets get rid of 4 first.
Add 4 to both sides :
-96 = -t/5
Multiply both sides by the denominator :
-480 = -t
Divide both sides by negative 1 :
t = 480
Answer:
Step-by-step explanation:
-t/5 - 4 = -100
-t/5 = -96
t/5 = 96
t = 480
9 divided by what equals 18?
Answer:
0.5
planation:
9/18 = 0.5
If you write the problem out x will represent the missing number
9 ÷ x = 18
You can write it as 9 ÷ 18
which is 0.5
The problem is asking what is 9 divided by to get 18
162 . . . . . . . . . . . . . . . . . .
helo i have until tomorrow to finish it
Answer:
C
Step-by-step explanation:
Answer:
x = 13
Step-by-step explanation:
All you gotta do is make it so the diagram displays x being 13
You're planning on making 7 meatloafs for a party. You go to the store to buy breadcrumbs, and see they are sold by the canister. How many canisters do you need to buy?
How long will it take for $3000 to grow to $11,700 at an interest rate of 6.3% if the
interest is compounded continuously? Round the number of years to the nearest
hundredth.
A) 0.83
B) 2160.28
C) 21.60
D) 2.16
Answer:
Step-by-step explanation:
Using A=P(1+r/n)^nt
Where,
P = principal amount (the initial amount you borrow or deposit), in this case $3000
r = annual rate of interest (as a decimal), in this case 0.06
t = number of years the amount is deposited or borrowed for, in this case we don't know it
A = amount of money accumulated after n years, including interest, in this case $21000
n = number of times the interest is compounded per year, in this case 12
This gives us 21,000=3,000(1+0.06/12)^12t
After simplification, 7=(1.005)^12t
By taking the logarithm of both sides,
Log7=Log1.005^12t
12t = Log 7/Log 1.005
12t =390.1545
This gives us 32.5months
What is the area of the triangle?
10
8
12.8
The answer pls I need help
Answer:
to figure out x, divide 5x by 5
to figure out 5x, times x by 5,
to figure out 5x-1 take away 1 from the answer in the middle column
Penny is training for a race. First she ran 1/10 of a mile
4 times. Next she ran 1/5 of a mile 3 times. Then she ran 3/10 of a mile two times. How far did Penny run
during her training?
Show your work.