Answer: 3y=12−2x 3 y = 12 - 2 x
Step-by-step explanation:
Answer:
Let
2x+y=-4——(1)
-3y=2x+12
2x+3y=-12—-(2)
Deduct eqt 1 from 2
(2x+3y=-12)
-(2x+y=-4)
2y=-8
y=-4
Put y=-4 into eqt 1
2x-4=-8
2x=-8+4
2x=-4
Divide both sides by 2
x=-2
:. x,y= -2,-4
Step-by-step explanation:
Solve x TN = 8 nV =x - 2?
Answer:
10
Step-by-step explanation:
STUV is a parallelogram.
TV and SU are its diagonals intersecting at point N.
Diagonals of a parallelogram bisects each other.
Therefore, TN = NV
8 = x - 2
8 + 2 = x
10 = x
x = 10
the value of y is four less than one-third of x. what is the equation of the relationship
Answer:
y=1/3x-4
Step-by-step explanation:
Answer:
y=1/3x-4
Step-by-step explanation:
4 is negative cause it says less than..
Using the sum of the angle measures of a triangle, m angleC=?
Answer:
m∠C = 66°
Step-by-step explanation:
Given
m∠ A = 33°
m∠ B = 81°
To determine
m∠C = ?
We know that sum of angles of a triangle is 180°.
so using the equation
m∠ A + m∠ B + m∠C = 180°
substituting m∠ A = 33°, and m∠ B = 81° in the equatio
33° + 81°+m∠C= 180°
114° + m∠C = 180°
m∠C = 180° - 114°
m∠C = 66°
Therefore,
m∠C = 66°Which of the following is not a rational number?A)22 B) ⅓ C)―16 D) 0.343
Asubmarine is only allowed to change its depth by rising toward the surface in 60-meter stages. It starts off at -340 meters.
1. At what depth is it after
1.1 stage
2. 2 stages
3.4 stages
2. How many stages will it take to return to the surface?
Answer:
stage 1 -280
stage 2 -220
stage 3 -160
stage 4 - 100
it takes 6 stages to return to the surface.
Step-by-step explanation:
PLEASE HELP me!!! can give brainliest!
Joyce would like to invest her money in a savings account. The function A (t) = 900(1.03)^t represents the amount of money joyce will have in her savings account after t years. How long will it take Joyce to have $1200 in her account? Around your answer to the nearest tenth of a year. ( use desmos )
Answer:
9 years ( approximately)
Step-by-step explanation:
900(1.03)^t = 1200
(1.03)^t= 1.33
( 1.03)^t= ( 1.03)^9
So, t= 9
Choose Yes or No to tell whether the symbol will be reversed when the variable is isolated in each inequality.
–10.5 9
–21/5 ≤ –5/2d
Answer:
No. ≤ means less than or equal to
Step-by-step explanation:
Find the sale price of the item. Round to two decimal places if necessary.
Original price: $210.29
Markdown: 78%
The sale price is $
Answer:
$46.27
Step-by-step explanation:
210.29×.78=164.02
210.29-164.02=46.27
Mr. Edwards purchased 3 bags of potatoes. He bought 36 potatoes in all. Each bag contains the same number of potatoes. How many potatoes are in each bag?
Answer:
12
Step-by-step explanation:
36 divided by 3 = 12
Hope This Helps
Answer:
39 or 12
Step-by-step explanation:
i got 39 by 36+3=39
i got 12 by 3 divided by 36= 12
Find the prime factorization of 120.
23 × 3 × 5
2 × 32 × 5
2 × 3 × 5
2 × 32 × 52
Answer:
(7/8 - 4/5)^2 = 9/
1600
= 0.005625
Step-by-step explanation:
Subtract: 7/
8
- 4/
5
= 7 · 5/
8 · 5
- 4 · 8/
5 · 8
= 35/
40
- 32/
40
= 35 - 32/
40
= 3/
40
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(8, 5) = 40. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 8 × 5 = 40. In the next intermediate step, the fraction result cannot be further simplified by canceling.
In words - seven eighths minus four-fifths = three fortieths.
Exponentiation: the result of step No. 1 ^ 2 = 3/
40
^ 2 = 32/
402
= 9/
1600
In words - three-fortieths squared = nine one-thousand six-hundredths.
Please help me
Solve five ninths plus four sixths
sixty six fifty fourths
ten fifteenths
nine tenths
thirty ninths
Answer:
11/9
Step-by-step explanation:
5/9 + 4/6 = 11/9
Answer: sixty six fifty fourths
30/54 + 36/54 = 66/54
Step-by-step explanation: Find a common denominator
Here, it looks like we can multiply the 9 × 6 to get 54
Then we divide the original denominator into the common denominator, then multiply the numerator by the quotient to get an equivalent fraction to add.
Starting with the 5/9 54÷9 = 6 The quotient, 6 multiplies by the numerator 5
6 × 5 = 30 That is the new numerator.
30/54 is the equivalent fraction for 5/9
Now 4/6 54÷6 = 9 Multiply this quotient, 9 times the numerator 4
9 × 4 = 36 That is the new numerator
36/54 is the equivalent fraction for 4/6
Add the numerators of the equivalent fractions keep the denominator the same:
30/54 + 36/54 = 66/54
It is possible to simplify this process. 4/6 is equivalent to 2/3 or 6/9
We could add 5/9 + 6/9 to get 11/9
66 and 54 are both divisible by 6, so 66/54 can be simplified to 11/9 or the mixed number 1²/₉
Write the equation of the line in slope-intercept that has passes through the points and (4, -8). (-3, 27)
Answer:
It's y = -5x + 12 and/or 5x + y = 12
Step-by-step explanation:
(x,y) is really helpful
*I believe that I'm correct, but I would recommend a quick double-check (just like any other math-related question)
Alison bought 5 boxes of erasers,
Each box had 212 erasers. How
many erasers did she buy in all?
Answer:
1,060
Step-by-step explanation:
Each- Means multiplication.
You can add 212 - 5 times
212x5
Answer:
1060
Step-by-step explanation:
212 x 5 = 1060
212
x5
5x200=1000
5x10=50
5x2=10
1000+50+10=1060
The Perimeter of the scalene triangle is 54.6cm
Which equation can be
used to find the value of b if side a measures 8.7 cm?
a 8.7+b=54.6
b 17.4+ b = 54.6
c 26.1 + b = 54.6
d 34.8+b =54.6
Answer: B. 17.4+b=54.6
Step-by-step explanation:
Edgen 2023
The equation can be used to find the value of b is 54.6 = 34.8 + b.
We have,
The border of the triangle is54.6 cm
and side a = 8.7 cm,
So, Perimeter = sum of the lengths of the three sides
54.6 = a + 3a + b
54.6 = 4a + b
We know a= 8.7 then
54.6 = 4(8.7) + b
54.6 = 34.8 + b
Therefore, the needed equation is54.6 = 34.8b.
Learn more about Perimeter here:
https://brainly.com/question/7486523
#SPJ6
What is the final amount if 588 is decreased by 3% followed by a 6% increase?
Give your answer rounded to 2 DP.
Answer:
604.58
Step-by-step explanation:
because hegarty says its 604.58
Please solve
16 > -8 + x
Answer:
3
Step-by-step explanation:
3x18>=3=3
Answer:
x < 24?
Step-by-step explanation:
13
y у
3
Х
4
What is y?
On Monday, Aisha spent 5 over 6 of an hour practicing the violin. On Tuesday, she practiced for 2 over 3 of an hour. Which equation shows correctly how much longer she practiced on Monday than on Tuesday?
Answer: 1/6
Step-by-step explanation:
5/6 - 4/6 = 1/6
Answer:
1
-
6
Step-by-step explanation:
How do you find the slope when you are only given an equation or a table?
Answer:
All you need to do is to calculate the difference in the y coordinates of the 2 points and divide that by the difference of the x coordinates of the points(rise over run). That will give you the slope.
Step-by-step explanation:
Answer:
Step-by-step explanation:
slope in an equation is the number before the x
in a table it is y2-y1/x2-x1
15 pointsss
The wholesale price of a dress at Macy's is $250 before they markup the product by 3/4. Sally, a customer, purchases the dress using a coupon giving her 1/5 off of the dress. How much does she pay after markup and discount is applied?
A. $200
B. $87.50
C. $250
D. $350
Who can help with this question please?
Answer:
Let the sum be x.
Using formula,
I=
100
PRT
=
100
x×
12
15
×
2
15
−
100
x×
12
8
×
2
25
=32.50
⇒
2400
25x
=32.50
⇒x=
25
32.50×2400
=3120
∴ Required sum =Rs.3120
Step-by-step explanation:
Use the Distributive Property to expand this expression.
z(–6.4 – 3.5x)
Answer:
[tex]z\left(-6.4\:-3.5x\right)=-6.4z-3.5zx[/tex]
Hence, Option 'C' is true.
Step-by-step explanation:
Given the expression
[tex]z\left(-6.4\:-3.5x\right)[/tex]
Apply distributive law: [tex]a\left(b-c\right)=ab-ac[/tex]
Here: [tex]a=z,\:b=-6.4,\:c=3.5x[/tex]
so the expression becomes
[tex]z\left(-6.4\:-3.5x\right)=z\left(-6.4\right)-z\cdot \:\:3.5x[/tex]
[tex]=-6.4z-3.5zx[/tex] ∵ [tex]+\left(-a\right)=-a[/tex]
Therefore,
[tex]z\left(-6.4\:-3.5x\right)=-6.4z-3.5zx[/tex]
Hence, option 'C' is true.
please help ill give 20 points!!!
Answer:
H
Step-by-step explanation:
As you can see the more shirt's that were bought the lower the price becomes per shirt.
A macaroni and cheese dish had 250 g of macaroni and 45 g of cheese.
What percent of the dish was cheese?
Answer:
15.25%
Step-by-step explanation:
total 45+250= 295
so percentage (45/295)×100
= 15.25%
please help i will mark branliest
Answer:
A. S=3w
Step-by-step explanation:
Hope it helps
2. You and 5 friends went out to eat at Little Italy.
The bill was split equally and each person paid
$13.26. Write and solve an equation to find the
amount of the total bill.
Answer:
13.26 * 6 =79.56
Step-by-step explanation:
$56,990 with a interest rate of %50 with a extra 4,000 comes into Dolan’s account every 2 weeks, how much will he have if he waits 3 years?
for the function h(x) = 4x2 -5x what is the value of (-3)
Answer:
h(-3) = 51
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Function NotationStep-by-step explanation:
Step 1: Define
h(x) = 4x² - 5x
h(-3) is x = -3
Step 2: Evaluate
Substitute in x: h(-3) = 4(-3)² - 5(-3)Exponents: h(-3) = 4(9) - 5(-3)Multiply: h(-3) = 36 + 15Add: h(-3) = 51Answer:
f(-3) = 51
Step-by-step explanation:
f(x) = 4x^2 - 5x
f(-3) = 4(-3)^2 - 5(-3)
f(-3) = 4*9 - (-15)
f(-3) = 36 + 15
f(-3) = 51
Which of the following coordinate points is a solution to the inequality y>= -3x+6
A (-2,4)
B (3,-4)
C (4,3)
D (-5,-3)
Answer:
I need help ok so this is correct it is c
Step-by-step explanation: First
A. Reflection
B. Rotation
C. Translation
D. No Transformation
Answer:D I think might be wrong
Step-by-step explanation: