Answer:
50
Step-by-step explanation:
Lmk if this was the right way to do it or not lol
La suma de dos números es 81. La diferencia de los mismos dos números es 33. Escribe un sistema de ecuaciones para representar esta situación. Luego encuentra los números.
Answer:
a) Escribe un sistema de ecuaciones para representar esta situación.
x + y = 81 ...... Ecuación 1
x - y = 33 ....... Ecuación 2
b) Los dos números son: 57 y 24
Step-by-step explanation:
Estamos tratando con 2 números
Dejar
El primer número = x
El segundo número = y
La suma de dos números es 81.
x + y = 81 ...... Ecuación 1
La diferencia de los mismos dos números es 33.
x - y = 33 ....... Ecuación 2
Escribe un sistema de ecuaciones para representar esta situación.
x + y = 81 ...... Ecuación 1
x - y = 33 ....... Ecuación 2
Resolvemos estas ecuaciones usando el método de eliminación
Restamos la ecuación 2 de la ecuación 1 para eliminar
2y = 48
y = 48/2
y = 24
Resolver para x usando la Ecuación 1
x + y = 81 ...... Ecuación 1
x + 24 = 81
x = 81 - 24
x = 57
Por lo tanto, los dos números son: 57 y 24
If f(x)=-3x-2, find each value.
1. f(3)
Answer:
f(3)=-11
in other words
When x=3, y=-11
Step-by-step explanation:
f(x)=-3x-2
f(3)=-3(3)-2
f(3)=-9-2
f(3)=-11
A football team plays a total of 30 matches in the league. If we know that it has lost in 3 10 of the matches and has taken 3 draws to find out how many matches he's lost.
Answer:
The team lost 9 matches
Step-by-step explanation:
Given
[tex]Matches = 30[/tex]
[tex]Lost = \frac{3}{10}[/tex] of the matches
[tex]Draw = 3[/tex]
Required
Determine the number of matches lost
From the question, we have:
[tex]Lost = \frac{3}{10}[/tex] of the matches
Mathematically, this is:
[tex]Lost = \frac{3}{10} * Matches[/tex]
Substitute 30 for Matches
[tex]Lost = \frac{3}{10} * 30[/tex]
[tex]Lost = \frac{3* 30}{10}[/tex]
[tex]Lost = \frac{90}{10}[/tex]
[tex]Lost = 9[/tex]
The team lost 9 matches
I need help with Geometry
9514 1404 393
Answer:
(5, 1)
Step-by-step explanation:
Reflection across the x-axis negates the y-coordinate:
(x, y) ⇒ (x, -y) . . . . reflection across the x-axis
Rotation 90° CCW is the transformation ...
(x, y) ⇒ (-y, x) . . . . rotation 90° CCW
The two transformations together give ...
(x, y) ⇒ (y, x) . . . . reflection across the x-axis, then rotation 90° CCW
For point B, this gives ...
B(1, 5) ⇒ B'(5, 1)
Pls help and show workings
If x3 = 216, what is the value of x?
a. 6
b. 4
c. 9
d. 3
the answer is six
I'm sure
Solve the following equation : 4y - 7 = 5
Answer:
Y=3
Step-by-step explanation:
Multiply 4x3 to get 12. 12-7=5.
Hope it helps!
Answer:
3
Step-by-step explanation:
4y=5+7
4y=12
y=12/4
y=3
Find three solution's to the linear equation 4x+y=20 using a table
Answer:
(-2, 28)
(-1, 24)
(0, 20)
Step-by-step explanation:
You can plug any numbers in for x, and solve for y.
Example: 4(-2) + y =20 multiply 4 and -2
-8 + y = 20 add 8 to both sides
y = 28
You can then do this for the rest of the numbers. Here is a table below:
If the AREA of the rectangle at the right is 22 3/4 square inches, what is the width of the rectangle?
Answer:
3.25 or 3 1/4 inches
Step-by-step explanation:
A = lw
22.75 = 7w
w = 3.25 which is 3 1/4
Alicia borrowed $3,000 from the bank at a rate of 12% simple interest per year. How much interest did she pay in 2 years
Answer:
I think it is $720
Let me know if this is right.
Please help me with the correct answer
Answer:
[tex]0.00000013=1.3*10^{-7}[/tex]
Step-by-step explanation:
Example of how scientific notation works:
[tex]150=1.50*10^{2}[/tex]
How many zeros are there?
6
How many spaces to make it 1.3?
1
6+1=7
[tex]0.00000013=1.3*10^{-7}[/tex]
(3×10^2 )×(2×10^−4 )=
Answer:
Step-by-step explanation:
First, lets simplify everything in the parenthesis.
(3×10^2 )×(2×10^−4 )=
In the parenthesis, since exponents come before multiplication in the order of operations, we need to do the exponents first.
(3 • 100) • (2 • 1/10^4)
Now, we can just multiply everything from left to right to get:
6*10^-2
Or
.06
10.
A camera costs $210. If the sales tax rate is 8%, how much tax is charged? Round your answer to the nearest cent.
A
$18.90
B. $14.70
C. $16.80
D
$168.00
Answer: C. $16.80
Step-by-step explanation:
Answer:
C.) $16.80
Step-by-step explanation:
Find what 8% as a decimal is: move the decimal to the right 2 times.=.08
Multiply: .08 times 210
.08 times 210 = 16.8
16.8= 16.80
$16.80
Hope I helped!! :)
Brainliest?!?!
Stay safe and have a good night/day/afternoon!!!
PLEASE HELP GIVING BRAINLEST
Answer:
11.25cm
Step-by-step explanation:
1.5x3=4.5
4.5x2=9
1.5x1.5=2.25
9+2.25=11.25
what calculation can be used to find the value of p in the equation p^3 =8
Cube Root
[tex] {p}^{3} = 8 \\ p = \sqrt[3]{8} \\ p = \sqrt[3]{ 2\times 2 \times 2} \\ p = 2[/tex]
Formula
[tex] {p}^{3} - 8 = 0[/tex]
Use the following formula.
[tex] {x}^{3} - {y}^{3} = (x - y)( {x}^{2} + xy + {y}^{2} )[/tex]
[tex](p - 2)( {p}^{2} + 2p + 4)[/tex]
The expression p²+2p+4 has the discriminant less than 0 ( D < 0 ).
Thus, remove the expression and leave only p-2
[tex]p - 2 = 0 \\ p = 2[/tex]
Substitution
The most obvious number that multiplies itself three times and equal 8 is 2.
Substitute p = 2
[tex] {p}^{3} = 8 \\ {2}^{3} = 8 \\ 2 \times 2 \times 2 = 8 \\ 8 = 8[/tex]
The equation is true, thus 2 is the answer.
50 points and I’ll mark you brainiest if correct.
Answer:
The container can hold 18 gallons
Step-by-step explanation:
Assume the container can hold x gallons
∵ The container is [tex]\frac{2}{3}[/tex] full with water
∵ It can hold x gallons
→ Multiply [tex]\frac{2}{3}[/tex] by x to find the number of gallons in the container
∴ The number of gallons in the container = [tex]\frac{2}{3}[/tex] x
∵ 4 gallons of water pouring out
∵ It is [tex]\frac{4}{9}[/tex] full
→ Multiply [tex]\frac{4}{9}[/tex] by x to find the number of gallons left in it
∴ The number of gallons left in the container = [tex]\frac{4}{9}[/tex] x
→ The difference between the numbers of gallons is 4 gallons
∵ [tex]\frac{2}{3}[/tex] x - [tex]\frac{4}{9}[/tex] x = 4
→ Subtract the terms of the left side
∴ [tex]\frac{2}{9}[/tex] x = 4
→ Multiply both sides by 9
∴ 2x = 36
→ Divide both sides by 18
∴ x = 18
∵ x represents the full of the container
∴ The container can hold 18 gallons
The word part meaning hundred is.
a. octo-
b. penta-
c. milli-
d. centi-
Answer:
centi
Step-by-step explanation:
Hey there!
When you see/hear the word “octo-”
(or “-octa”) think of ‘octagon’ and how they have ‘EIGHT SIDES’. So this means that prefix means 8; when you see/hear the word “penta-” think of ‘pentagon’ because it ‘FIVE SIDES’. So means that prefix means 5; When you see/hear the word “milli-” think of ‘one thousandths’ (this comes in handy when you’re working with DECIMALS and SOME MEASUREMENTS); when you see/hear “centi-” think of
centigrade.. you’ll learn about that in measurements as well.. it equals 100
Now that we had to break down the meaning of the prefixes we reached our answer:
The one that has the meaning for hundred is “centi- (option D)” would most likely be your answer
Answer: D. Centi- ☑️
Good luck on your assignment and enjoy your day!
~LoveYourselfFirst:)
HELP! HOW DO I SOLVE THIS???
4y + y to 4y2
what is the answer to y=x-5 and y=-7x+11 solving with substitution ????
Answer:
(2, -3)
x = 2
y = -3
Step-by-step explanation:
Answer:
y=3,x=8
Step-by-step explanation:
y=x-5
y=-7x+11
x=y+5
y=-7(y+5)+11
y=-7y-35+11
8y=24
y=3
3=x-5
x=8
solve the quadratic equation
x2-10x+49=4x+1
Answer:
x=8 & x=6
Step-by-step explanation:
Answer:
X= X2+48/14
Step-by-step explanation:
Sam and Bethan share £54 in the ratio 5:4
Work out how much each person gets.
Answer:
Sam: $30; Bethan: $24
Step-by-step explanation:
Since the ratio is 5:4 Sam has to pay 5/9 of the total which is 54. To find how much he pays set up the equation like this.
[tex]\frac{x}{54} =\frac{5}{9}[/tex]
Cross Multiply
54(5)=9x
270=9x
Divide by 9
30=x
So Sam pays $30. To find out how much Bethan pays simply subtract 30 from 54
54-30=24
So Bethan pays $24
a bricklayer needs to order 6300kg of building sand
Answer:
[tex]9\times 10^7\ \text{grains of sand}[/tex]
Step-by-step explanation:
Given that,
A bricklayer needs to order 6300kg of building sand.
1 grain of this sand weighs [tex]7\times 10^{-5}\ kg[/tex].
We need to find how many grains of sand are there in 6300 kg.
It can be just calculated as follows :
1 grain of sand = [tex]7\times 10^{-5}\ kg[/tex]
[tex]6300\ kg=\dfrac{6300}{7\times 10^{-5}}\\\\=9\times 10^7\ \text{grains of sand}[/tex]
or
= 90000000 grans of sand
So, 6300 kg is equal to [tex]9\times 10^7\ \text{grains of sand}[/tex].
What is the image of (x,y) after a translation of 3 units left and 5 units up?
the answer is number 3
if f(x) = 6x+2 find the value of f(2)
Answer:
14
Step-by-step explanation:
Someone plz help me plz T^T
Graph the boundary line of x + 5y <20.
Answer:
its triangle shown in attached figure
Step-by-step explanation:
Graph is attached
Need help ASAP!! I'll give brainliest to the correct answer!!!
A.) 18 inches
B.) 9 inches
C.) 6 inches
D.) 12 inches
Will give brainliest to first right answer. Before a sale an items price was $28.00 then after being discounted the price was $14.60. What was the discount for the item? with a exact fraction
Answer:
48 percent decrease
Step-by-step explanation:
before=28 dollars
after=14.60
sorry, i cant be bothered to answer it all!!!!
What is the coefficient of the term 6/7 xy? A- 6xy. B-1/7. C-6. D--6/7
Nina spent $75.00 on music in September. She spent $96.00 on music in
October. By which percent did Nina's spending on music increase from
September to October?
A 78%
B 28%
22%
D 12%