Answer:
-2x-2y=-8
-4x-8y=-20
From the 1st eqn
Dividing through by 2
you have
-x-y=-4
Multiply through by -(minus)
x+y=4
x=4-y
Substitute into eqn 2
-4x-8y=-20
-4(4-y)-8y=-20
-16 + 4y - 8y = -20
-4y = -20 +16
-4y = -4
y= 1
Substitute into any of the other eqn's to get x
x= 4-y
x= 4-1
x=3
Can i plz get some help been stuck for while
What is the volume of the shape shown
Answer:
Yea sure its 102.5meters squared
CAN SOMEONE HELP ME WITH THIS PLEASE AND THANK YOU.
Answer:
7/20
Step-by-step explanation:
Take the time for history assignment and subtract the time for her English assignment
3/5 - 1/4
Get a common denominator of 20
3/5 *4/4 = 12/20
1/4 * 5/5 = 5/20
12/20- 5/20
7/20
This question doesn’t make sense to me
Answer:
2
Step-by-step explanation:
Average rate of change is
f(x2) - f(x1)
----------------
x2 -x1
We know x2 =2 and f(x2) = 5
x1 = 1 and f(x1) = 3
Using the formula
5-3
-----------
2-1
2/1
2
SOMEONE PLEASE PLEASE HELP ME!!!
9514 1404 393
Answer:
C
Step-by-step explanation:
We assume you want these in order by angle measure in some consistent units. Degrees is a reasonable unit to use here.
π radians = 180°
Substituting 180° where you see π, you find the angle values to be ...
2π = 2(180°) = 360°
7π/6 = 7/6(180°) = 210°
π/4 = (1/4)(180°) = 45°
Then the angles from least to greatest are ...
38°, 45°, 80°, 210°, 360°
or
38°, π/4, 80°, 7π/6, 2π . . . . matches the third choice
PLEASE HELP ME!!! WILL MARK BRAINLIEST
Answer:
The first one is correct
Step-by-step explanation:
a^2-1 + A+1
Since the -1 and +1 cancel out that leaves us with just a^2+a
Answer:
The answer is d
Step-by-step explanation:
[tex]a^{2} -1 + a + 1\\[/tex]
To add variables you count how many variables there are, and in this case, there are two a's
so it is going to be [tex]2a^{2}[/tex]
and 1 - 1 = 0
The answer would be [tex]2a^{2}[/tex]. Thank you
The difference of two positive numbers is 14. The larger is twice the smaller decreased by 4. Find the two numbers.
X (smaller value)
X (larger value)
Answer:
the answer is given on the picture
BRAINILEST PLZZZZZzzzzz
Answer:
Base:3
Height:5
Area= 15
Step-by-step explanation:
Formula=BxH
3x5=15
What is the value of x?
Answer:
x = [tex]29^{o}[/tex]
Step-by-step explanation:
Looking at the right triangle we see two congruent sides, which means that we can find the angles:
180 - 64 = 116° for both bottom angles of the right triangle, so 58° (116°/2).
Looking at the middle angle we know that left corner from the left triangle is 58° so the angle in the middle would be 180 - 58 = 122°.
Since the right triangle equals to 180° then we can find the missing values including x:
180 - 122 = 58° is the total angle for each corner of the right triangle. So x would be 58/ 2 = 29°.
Therefore x = 29°.
Three people build a wall in 10 days. How long would it take five people?
Answer:
6 days for 5 people
Step-by-step explanation:
3 x 10 = 3030/5 - 66 daysUn vehículo se mueve en línea recta a una velocidad de 144 km/h durante 45 minutos. ¿Qué distancia recorre? Dar la respuesta en metros.
Ayudaaaaaa
Answer:
I can't understand.
Step-by-step explanation:
Sorry
What specific measure of a geometric figure is shown in the image?
A. A 165 angle
B. A 15 angle
C. A 15mm side length
D. A 180 mm side length
Someone pls help me ill give out brainliest pls don’t answer if you don’t know
Answer:
A
Step-by-step explanation:
18 * 18 = 324
19 * 19 = 361
The area of the frame is 357 sq in. which is between 324 sq in. and 361 sq in., so the side is between 18 in. and 19 in.
Answer: A.
Answer:
Option A . Between 18 and 19
Step-by-step explanation:
Area = a²
357 = a²
[tex]\sqrt{357} = a\\\\a = 18.9 \ in[/tex]
find the number whose product with 2/211 gives 8/11
Answer:
1688/22
Step-by-step explanation:
keep, change, flip
Ciara is naking a new outfit she needs 2 1/2 yards of the fabric for the shawl and 1 3/4 yards of fabric for the dress. If she has 3 yards of fabric,how much more does she needs?If the dance outfit is charged at $16 per yard how much will the dance outfit cost
Answer:
1 1/4 yards
$20
Step-by-step explanation:
The amount of fabric more that she needs can be determined by subtracting the sum of the yards needed for the shawl and the dress from the fabric she has
sum of the yards needed for the shawl and the dress =
[tex]2\frac{1}{2} + 1\frac{3}{4}[/tex]
[tex]3\frac{2 + 3}{4}[/tex] = [tex]3\frac{5}{4}[/tex] = [tex]4\frac{1}{4}[/tex]
Yards needed
[tex]4\frac{1}{4} - 3[/tex] = [tex]1\frac{1}{4}[/tex]
cost of dance outfit = $16 x [tex]1\frac{1}{4}[/tex]
[tex]\frac{5}{4}[/tex] × $16 = $20
can someone please help me!!!!
Answer:
10 * 9 = 90
90/2 = 45
45 cm^2
PLS ANSWER FAST 60 PTS
Answer:
72 sqrt(3) ft^2
Step-by-step explanation:
Since this is a right triangle, we can use trig functions
We can find the height by
tan theta = opp /adj
tan 60 = h /12
12 tan 60 = h
12 sqrt(3) = h
Then we can find the area
A = 1/2 bh where b is the length of the base and h is the height
A = 1/2 ( 12) ( 12 sqrt(3))
A = 72 sqrt(3) ft^2
Jalen says that the height, radius, and diameter of a cone lie entirely on the base of the cone. What is Jalen’s error?
The height does not lie on the base because it is perpendicular to the base.
The radius does not lie on the base because it contains the center of the base.
The diameter does not lie on the base because it contains a radius of the circle.
The base does not contain the height, the radius, or the diameter because it is a circle.
Answer:
A, or "The height does not lie on the base because it's perpendicular to the base."
Step-by-step explanation:
EDGE 2021
Option A is correct, the height does not lie on the base because it is perpendicular to the base.
What is Three dimensional shape?a three dimensional shape can be defined as a solid figure or an object or shape that has three dimensions—length, width, and height.
Given that Jalen says that the height, radius, and diameter of a cone lie entirely on the base of the cone.
We have to find the Jalen’s error.
As we know that height does not lies on the base because it is perpendicular to the base.
The Jalens error is that height does not lie on the base because it is perpendicular to the base is a error statement.
Hence, option A is correct, the height does not lie on the base because it is perpendicular to the base.
To learn more on Three dimensional figure click:
https://brainly.com/question/2400003
#SPJ7
What is the solution to the system of equations below?
y = negative 3 x + 5 and y = 4 x minus 2
and there is no option choice of -2,-5
Step-by-step explanation:
please see my attachment
Suppose that 3 balls will be randomly put into 3 buckets, with each ball being equally likely to be put into each of the buckets, independently of which buckets are chosen for any of the other balls. (E.g., the first ball is equally likely to be put into any of the 3 buckets, and then regardless of which bucket the first ball is placed in, the second ball is equally likely to be put into any of the 3 buckets.) What is the probability that all of the balls will be put into the same bucket
Answer:
[tex]\frac{1}{27}[/tex]
Step-by-step explanation:
Since there are a total of three buckets and only one can be chosen at a time, this would mean that the probability of a ball being placed in a bucket is 1/3. Since each ball has the same probability of being placed into any bucket regardless of the where the previous ball landed, it means that each ball has the same 1/3 probability of a bucket. In order to find the probability that all three land in the same bucket, we need to multiply this probability together for each one of the balls like so...
[tex]\frac{1}{3} * \frac{1}{3} * \frac{1}{3} = \frac{1}{27}[/tex]
Finally, we see that the probability of all three balls landing in the same bucket is [tex]\frac{1}{27}[/tex]
Solve the following system using the elimination method.
3x+2y=1
2x-y=10
Answer:
Step 1 : Multiple both sides by 2
3x + 2y = 1
4x - 2y = 20
Step 2 : Eliminate 1 variable by adding the equations
7x = 21
Step 3 : Divide both sides by 7 to solve for x
x = 3
Step 4: Substitute the value of x into 3x + 2y = 1
3(3) + 2y = 1
Step 5: Solve for y
2y = 1 - 9
2y = -8
*divide by 2
y = - 4
Solution:
(x,y) = (3, -4)
Solve using the quadratic formula
2x^2+x+67=0
Answer:
[tex]\displaystyle x=\frac{-1 \pm i\sqrt{535}}{2}[/tex]
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightAlgebra I
Multiple RootsStandard Form: ax² + bx + c = 0Quadratic Formula: [tex]\displaystyle x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}[/tex]Algebra II
Imaginary Root i = √-1Step-by-step explanation:
Step 1: Define
Identify
2x² + x + 67 = 0
a = 2
b = 1
c = 67
Step 2: Solve for x
Substitute in variables [Quadratic Formula]: [tex]\displaystyle x=\frac{-1 \pm \sqrt{1^2-4(2)(67)}}{2(1)}[/tex]Multiply: [tex]\displaystyle x=\frac{-1 \pm \sqrt{1^2-4(2)(67)}}{2}[/tex][√Radical] Evaluate exponents: [tex]\displaystyle x=\frac{-1 \pm \sqrt{1-4(2)(67)}}{2}[/tex][√Radical] Multiply: [tex]\displaystyle x=\frac{-1 \pm \sqrt{1-536}}{2}[/tex][√Radical] Subtract: [tex]\displaystyle x=\frac{-1 \pm \sqrt{-535}}{2}[/tex][√Radical] Simplify: [tex]\displaystyle x=\frac{-1 \pm i\sqrt{535}}{2}[/tex]This one's not too difficult, giving Brainliest and 40 points to whoever has the best answer
Select all of the prime numbers.
15
2
8
31
1
13
Answer:
2 and 31 are prime
15 and 8 are composite
1 is neither prime nor composite
Step-by-step explanation:
Prime numbers are only divisible by one and themselves
15 = 5*3 composite
2 = prime
8 = 4*2 composite
31 = prime
1 neither prime nor composite
13= prime
A car can travel 76 miles on 4 gallons of gasoline. How far can it travel on 8
gallons?
Answer:
152 gallons
Step-by-step explanation:
76÷4=19
19x8=152
Answer:
152 miles
Step-by-step explanation:
76 x 2 = 152
If you apply the changes below to the cubic parent function, F(x)=x3, what is the equation of the new function if it reflects across the y-axis and vertically stretches by multiplying by 7
Answer:
g(x) = 7(-x)³
Step-by-step explanation:
The cubic parent function is given as; f(x) = x³
Now, we are told that it reflects across the y-axis. This means that the new function will take the form;
g(x) = f(-x)
Thus, the new function is;
g(x) = (-x)³
Now,we are told that this new function stretches by multiplying by 7. Thus, we now have;
g(x) = 7(-x)³
heyo, could you help me? thank you
Answer:
A system of linear equations can have no solution, a unique solution or infinitely many solutions. A system has no solution if the equations are inconsistent, they are contradictory. for example 2x+3y=10, 2x+3y=12 has no solution. is the rref form of the matrix for this system.
Step-by-step explanation:
Jacob buys 8 copies of a book for presents for friends. It costs her a total of $119.60. Write an equation that can be used to find out how much each book, b, was sold for.
Answer:
8b=119.60
Step-by-step explanation:
8b=119.60
B=14.95
pls check screenshot 50 points
Answer:
See below
Step-by-step explanation:
Part (a)f(x - 1) is the translation of f(x) one unit right.
So the graph is exactly same shape but shifted right one unit.
Part (b)f(x) has vertex (-1, 2)
The function y = f(-x) + 2 will have the vertex changed as per rule:
(x, y) → (-x, y + 2)So the new vertex is:
(-1, 2) → (-(-1), 2 + 2) = (1, 4)First, Diana scores 12 points in total with three arrows. On her second turn, she scores 15 points. How many points does she score on her third turn?
Answer:
Third turn point = 21 points
Step-by-step explanation:
Given:
First turn point = 12
Second turn point = 15
Find;
Third turn point
Computation:
First turn point = 12
Assume;
Point for outer circle = a
Point for inner circle = b
So,
3a = 12
Point for outer circle = 4 point
Second turn point = 15
So,
2a + b = 15
2(4) + b = 15
Point for inner circle = 7
Third turn point = 3 x 7
Third turn point = 21 points
Please hurry
Find the value of cos P rounded to the nearest hundredth, if necessary
Answer:
cosP = 4/5
Step-by-step explanation:
cosP= b/h = b/√(b²+p²) = 24(√(24²+18²)= 24/30= 4/5
not sure how to do this one! will mark brainliest
Answer:
[tex]\frac{1}{6}[/tex]
Step-by-step explanation:
[tex]-\frac{12}{16} + \frac{11}{12}[/tex]
take lcm of the denominator
lcm=48
[tex]\frac{-12*3 + 11*4}{48}[/tex]
[tex]\frac{-36 + 44}{48}[/tex]
[tex]\frac{8}{48}[/tex]
[tex]\frac{1}{6}[/tex]
Answer:
[tex]=\frac{1}{6}[/tex]
Step-by-step explanation:
[tex]-\frac{12}{16}+\frac{11}{12}[/tex]
the lcm of 16 and 12 is 48
[tex]-\frac{12}{16} =-\frac{36}{48}[/tex]
[tex]\frac{11}{12} =\frac{44}{48}[/tex]
[tex]-\frac{36}{48} +\frac{44}{48}=\frac{8}{48}[/tex]
[tex]=\frac{1}{6}[/tex]
Hope this helps
