Answer:
25000(1-.14)^t
Step-by-step explanation:
it's just a simple decreasing equation it's your start number 1 minus your percentage because we're decreasing and to the power of t which equals time
Each classroom at a school has 24 desks. There are 18 classrooms in the school. How many desks are at the school?
A
444 desks
B
432 desks
C
424 desks
D
402 desks
Answer:
The answer is B. There are 432 desks in all 18 classes
Find the area of the shaded region
Answer:
4 cm
Step-by-step explanation:
Answer:
18pi cm^2
or 56.55 cm^2 to nearest hundredth.
Step-by-step explanation:
Area of the whole circle = pi r^2
= pi * 9^2
= 81pi
By proportion the area of the shaded region
= (80/360) * 81pi
= 18pi cm^2.
Henry gross pay is $4000 a month. If he saves $500 of his pay, what percent of his pay does he save?
Answer:
12.5%
Step-by-step explanation:
big brain
My brainy brother and sister added their ages together and got 15. When they multiplied their ages together, they got 54. How old is the older one between the two of them?
Given:
Sum of ages of brother and sister = 15
Product of their ages = 54
To find:
How old is the older one between the two of them?
Solution:
Let x be the age of brother and y be the age of sister.
Sum of ages of brother and sister = 15
[tex]x+y=15[/tex]
[tex]x=15-y[/tex] ...(i)
Product of their ages = 54
[tex]xy=54[/tex]
[tex](15-y)y=54[/tex] [Using (i)]
[tex]15y-y^2=54[/tex]
[tex]0=54-15y+y^2[/tex]
Splitting the middle term, we get
[tex]54-15y+y^2=0[/tex]
[tex]54-9y-6y+y^2=0[/tex]
[tex]9(6-y)-y(6-y)=0[/tex]
[tex](6-y)(9-y)=0[/tex]
Using zero product property, we get
[tex](6-y)=0\text{ and }(9-y)=0[/tex]
[tex]y=6\text{ and }y=9[/tex]
If [tex]y=6[/tex], then using (i), we get
[tex]x=15-6[/tex]
[tex]x=9[/tex]
If [tex]y=9[/tex], then using (i), we get
[tex]x=15-9[/tex]
[tex]x=6[/tex]
Therefore, the age of older one is 9, the age of younger one is 6 and the difference between their ages is 3.
The midpoint of chord AB is ( , ), and the slope of chord AB is
Answer:
See solution below
Step-by-step explanation:
Let the coordinate's of A and B be (1, 0) and (2,4) respectively
midpoint M (X, Y) = [(x1+x2/2, y1+y2/2)]
X = x1+x2/2
X = 1+2/2
X = 3/2
X = 1.5
Y = y1+y2/2
Y = 0+4/2
Y = 4/2
Y = 2
Hence the required midpoint (X, Y) is (1.5, 2)
Slope m = y2-y1/x2-x1
m = 4-0/2-1
m = 4/1
m = 4
Hence the slope is 4
Note that the coordinates are assumed but the same calculation can be employed for any other coordinates
A triangle has sides of lengths 12, 14, and 19. Is it a right triangle? Explain.
yes; 122 + 142 192
O no; 122 + 142
192
O no: 122 + 142 + 192
O yes: 122 + 142 =
+ 142 = 192
Answer:
It is C
Step-by-step explanation:
this is easy math for me
I need help cand someone help me find this answer
Answer:
725.7 m²
Step-by-step explanation:
A=2πrh
r=16 1/2 ÷ 2 = 8 1/4
A= 2π(8.25)(14)=725.7
is this correct? formula is displayed on image:
Answer:
no it should bee
[tex] \tan( \alpha ) = \frac{15}{8} [/tex]
Answer:
x = 15
Step-by-step explanation:
The angle between a tangent and a radius at the point of contact F is 90°
Then Δ GFE is a right triangle
Using Pythagoras identity in the right triangle
x² + 8² = 17²
x² + 64 = 289 ( subtract 64 from both sides )
x² = 225 ( take the square root of both sides )
x = [tex]\sqrt{225}[/tex] = 15
According to this diagram, what is tan 62°?
A 17/15
B 8/17
C 15/17
D 8/15
E 17/8
F 15/8
The plot shown below describes the relationship between the average income in a city and the average rent for a 111-bedroom apartment in that city.
What is the best description of this relationship?
Options :
Cities with higher incomes tended to have higher rents
Cities with higher incomes tended to have lower rents
There is no clear relationship between income and rent
Answer:
Cities with higher incomes tended to have higher rents
Step-by-step explanation:
The scatter plot showing the relationship between average income in different cities and the average rental fee for a 1 bedroom flat has a linear relationship with a positive slope, this depicts that there is a positive Correlation or relationship between the two variables, that is an increase in variable A leads to a corresponding increase in variable B. From the graph we can see that as the income in cities increase, the average rental price also increases. Hence, Cities with higher incomes tends to incur higher rents.
Options :
Cities with higher incomes tended to have higher rents
Cities with higher incomes tended to have lower rents
There is no clear relationship between income and rent
Answer:
Cities with higher incomes tended to have higher rents
Step-by-step explanation:
The scatter plot showing the relationship between average income in different cities and the average rental fee for a 1 bedroom flat has a linear relationship with a positive slope, this depicts that there is a positive Correlation or relationship between the two variables, that is an increase in variable A leads to a corresponding increase in variable B. From the graph we can see that as the income in cities increase, the average rental price also increases. Hence, Cities with higher incomes tends to incur higher rents.
In trapezoid ABCD, the measure of
Answer:
Step-by-step explanation:
HELP PLS!!!
Consider the function f(x). Select all of the following that include a horizontal compression of f(x).
A) 2f(x)
B) f(3x)
C) -f(x)+1
D) f(0.4x) - 1
E) f(6x) +9
F) -f(0.12x)
Answer: B, E
Step-by-step explanation:
Abdullah expands (x - 3)2 and gets the answer x2 - 9. Describe what he has
done wrong.
Answer:
He squared the numbers inside without following the appropriate rule
Step-by-step explanation:
what he should have done
[tex](x-3)^2\\= x^2 - 2 *x*3+3^2\\= x^2-6x+9[/tex]
If f(x)=x and g(x)=2, what is (f o g)(x)?
Answer:
= 2x
Step-by-step explanation:
Why is 3 x 1/10 less than 3 x 10?
Answer:
The value of 1 tenth is less than the value of 1 ten.
Step-by-step explanation:
Answer:
Because 3 x 1/10 = 3/10
whereas 3 x 10 = 30
and 3/10 < 30
Also b/c 1/10 < 10 and they are multiplied by the same value (3)
Step-by-step explanation:
Helppp pleaseeee I really need help
Answer:
Step-by-step explanation:
S
Step-by-step explanation:
[tex] = \frac{(2c {}^{2} + c - 2) }{(c + 1)} \\ rationalise \: the \: denominator \\ = \frac{(2 {c}^{2} + c - 2)(c - 1)}{(c + 1)(c - 1)} \\ = \frac{(2 {c}^{3} - 2 {c}^{2} + {c}^{2} - c - 2c + 2) }{( {c}^{2} - {1}^{2} )} \\ = \frac{(2 {c}^{3} - {c}^{2} - 3c + 2 )}{( {c}^{2} - 1) } [/tex]
2
A pack of 5 of board games costs $75.
If there is a direct proportion between the price (y) and number of board games (2), which equation represents the
situation?
y = 75.2
By = 52
C y = 2
Dy = 152
Answer:
one board game cost 15 dollars
75/5=15
15y
y = number of board games and 15= the price of each board game
so to calculate any number of board games bought just input the number of board games bought for y in the expression 15y and you will get the price.
Step-by-step explanation:
Solve.
a-5/a+4=5/4
a=0
a=-1
a=-9
a=-40
Answer:
-1
Step-by-step explanation:
hzhsuxbsjsisnduxidnwhdicjdbe
one square has an area of 81cm². Calculate its perimeter.
Answer:
Perimeter = 36cm
Step-by-step explanation:
The area of a square = l 2where l is the length of the square's side.
l 2 = 81 ⇒ l = √ 81 =9
hence Perimeter = 4 × 9 = 36 c m
[tex]\huge{ \mathfrak{ \underline{question : }}}[/tex]
One square has an area of 81cm². Calculate its perimeter.
[tex]\huge{ \mathfrak{ \underline{ Answer \: \: ✓ }}}[/tex]
For a Square,
[tex] \longrightarrow \: area = side {}^{2} [/tex]
[tex]side {}^{2} = 81[/tex][tex]side = \sqrt{81} [/tex][tex]side = 9[/tex]So, The measure of each side of the square is 9 cm
[tex]\#TeeNForeveR [/tex]
Please help anwser these. i hate math.
Answer:
2 is the answer to your question
PLEASE HELP ASAP
WILL MARK BRAINLIEST
Answer:
The price of the shirt is $7.50
The price of the pants is $18.50
Step-by-step explanation:
If you want to write something for your proof of work:
4x + 3x = 85.50
3 (4x + 3y ) = 3 (85.50)
12x + 9y = 256.50
12 × 7.50 = 90
9 × 18.50 = 166.50
ALSO for the last question:
12 × 7.50 = 90
20 × 18.50 = 370
370 + 90 = $460.00
Choose values for A and B and use them to verify the product shown
(5a+b)(a-6b) = 5a^2 - 29ab -6b^2
Answer:
let A and B be 2 and 3
Step-by-step explanation:
then substitute:
(5a+b)(a-6b) = 5a^2 - 29ab - 6b^2
(5×2+3)(2-6×3) = 5×2^2 - 29×2×3 - 6×3^2
13 × (-16) =20-174-54
-208 = -208
Triangle ABC has vertices A(-2,0), B(2,5), C(3, 1). The reflection of the image of triangle ABC is triangle A'B'C' with vertices A(-2,0), B12, -5), C73.
-1). What is a rule that describes the reflection?
Answer: Reflection about x-axis
Step-by-step explanation:
Given
Initially, vertices are [tex]A(-2,0), B(2,5),C(3,1)[/tex]
After reflection they become [tex]A(-2,0),B(2,-5),C(3,-1)[/tex]
It is clear that the x coordinate remains unchanged and the y coordinate changes its sign. It occurs when reflection is done about the x-axis.
For example, when (a,b) is reflected about the x-axis, it becomes (a,-b).
So, here reflection is being done about the x-axis.
A man bought some story books for 5 Ghana Cedis each from a bookshop
15 of the books got missing. He then sold the rest at 8 Ghana cedis each and made a profit of 90 Ghana cedis. How many books did he buy?
Answer:
70
Step-by-step explanation:
Let the no of books bought be x
The cost price of 1 book is 5x
No of the missing book is 15
The remaining book is x-15
The selling price of 1 book is 87
Selling price of (x-15) book is 87
Hence the number of books can be calculated as follows
8(x-15)-5x= 90
8x-120-5x= 90
8x-5x= 90+120
3x= 210
x= 210/3
= 70
Hence the number of books bought is 70
Read this scenario and answer the question that follows it.
Sample scenario:
A factory produces blue and green widgets, both at equal production costs. In one day, the factory can make 20 widgets of either color. The factory has been making 10 blue and 10 green widgets per day because they both sell for $5.00. Recently, the price of blue widgets has increased from $5.00 each to $8.00 each.
How does the law of supply say the factory will respond to the increase in the price of blue widgets?
by increasing the number of green widgets supplied
by not changing the number of blue widgets produced
by increasing the number of blue widgets supplied
by decreasing the number of blue widgets supplied
Answer
B
Step-by-step explanation:
How would you solve y=3/4x+9
Answer: i took a screen shot of the answer hope this helped
plz make brainly
Step-by-step explanation:
Insert commas suitably and write the names according to International system of numeration: a) 40050017 b) 251400
Answer:
a) 40050017 = 40,050,017
Forty million fifty thousand and seventeen
b) 251400 = 251,400
Two hundred fifty one thousand and four hundred
Step-by-step explanation:
In international system commas are placed after three digits starting from the unit's place.
a) 40050017 = 40,050,017
Forty million fifty thousand and seventeen
b) 251400 = 251,400
Two hundred fifty one thousand and four hundred
It can be placed as shown below.
TM, M, HTh , TTh, Th, H, T, O
4 0 0 5 0 0 1 7
2 5 1 4 0 0
PLEAASE HEELP! Will mark brainly!!!
I need help on this ASAP
Answer:
That other person was such a troll but it by 43! Could you please mark me branllest? Only if you want to :)
Step-by-step explanation:
I need help on math plz no bots