I need help with this problem please
order of operation 3×5+4×2-3
[tex]3\times 5 +4 \times 2- 3\\\\=15+8-3\\\\=12+8\\\\=20[/tex]
Solve this system of linear equations. Separate
the x- and y-values with a comma.
18x - 7y = -17
3x - 3y = -12
Enter the correct answer.
Answer:
-> (x,y) => (1,5)
x = 1y = 5Step-by-step explanation:
Let's solve your system by elimination.
18x−7y=−17;3x−3y=−12
Multiply the second equation by -6, then add the equations together.
(18x−7y=−17)
−6(3x−3y=−12)
Becomes:
18x−7y=−17
−18x+18y=72
Add these equations to eliminate x:
11y=55
Then solve 11y=55for y:
11y=55
11y/11 = 55/11
(Divide both sides by 11)
y=5
Now that we've found y let's plug it back in to solve for x.
Write down an original equation:
18x−7y=−17
Substitute5foryin18x−7y=−17:
18x−(7)(5)=−17
18x−35=−17(Simplify both sides of the equation)
18x−35+35=−17+35(Add 35 to both sides)
18x=18
18x/18 = 18/18
(Divide both sides by 18)
x=1
Consider the line – 2x - 5y= 2.
What is the slope of a line perpendicular to this line?
What is the slope of a line parallel to this line?
Slope of a perpendicular line:
Answer:
Step-by-step explanation:
a group of 10 people are ordering pizza. each person wants 2 slices and each pizza has 5 slices. how many pizzas should thay order
Answer:4
Step-by-step explanation:
2 slices each ten people times them together 20 slices .4 pizzas*5slices=20
need this answer ASAP 20 points as reward
A $299.99 grill was discounted 25% for a labor day sale. When the sale ended, the sale price increased 25%. How much is the grill now?
Find the slope and the equation for the line passing through the points: (-3,0) and (-1,2)
Answer:
slope: 1equation: y = x +3Step-by-step explanation:
The slope of the line between two points can be found using the slope formula:
m = (y2 -y1)/(x2 -x1)
m = (2 -0)/(-1 -(-3)) = 2/2
m = 1 . . . . . the slope of the line is 1
__
The value of the y-intercept can be found by solving the slope-intercept equation for b.
y = mx +b
b = y -mx
b = (0) -(1)(-3) = 3 . . . . . using point (x, y) = (-3, 0)
The equation of the line with slope 1 and y-intercept 3 can be written as ...
y = x +3
True or false? Based only on the given information, it is guaranteed that
AD = BD
A
D
Given: ADI AC
DBI CB
ACE BC
B
O A. True
B. False
Answer:
True
Step-by-step explanation:
The triangles are both right triangles, meaning they can be used with pythagorean theorem. If the triangles CAD and CBD share the same "hypotenuse" (CD), and they have a pair of congruent sides, they other pair of sides must be able to fit into the pythagorean theorem/
100 POINTS!!! Please help ^^ it’s urgent!!
Answer:
x=1 y=4
Step-by-step explanation:
5x+y=9
10x-7y=-18
-35x-7y=-63
-45x=-45
x=1
y=4
(10)-(28)=18
Brainliest would be appreciated
Answer:
x=1 y=4
Step-by-step explanation:
a
A total of 133 million square miles of the Earth's surface are covered in water. The ratio of the area covered in water to the area of land is 7/3. Find the area of land on Earth.
URGENT! Whoever gets first correct answer is brainliest
Answer:
57 million square milesStep-by-step explanation:
Let the area of water is w and area of land is l.
Their ratio is:
w/l = 7/3or
133 / l = 7/3Find the value of l
l = 133*3/7l = 57 million square milesLet that be x
133/x=7/37x=399x=399/7x=57M mi²or 22,4:58:53 AM
Watch help video
Cooper gave out a survey to some students in his school about their favorite color.
tudents could choose between red and blue. 129 of those surveyed said their favorite
color was red. 57% of the students surveyed said their favorite color was blue. How
many students were surveyed in total?
Answer:
300 students were surveyed.
Step-by-step explanation:
Well, we know that 57% of students like blue, so that leaves 43% who like red. By simply dividing 129 by 43, we get 3, so know we can conclude that 1% is equal to 3 students. Knowing this, we can multiply 3 by 57 to get 171. Adding these up, we get 300, and we can verify this, by simply finding the difference between 57 and 43, which is 14. Now that we also know that 1% is equal to 3 students, we can multiply 14 by 3, to get 42, which is also the difference between 171 and 129.
What is the value of k? G(x)=f(x+k)
Answer:
K=6
Step-by-step explanation:
I hope this answer is right
Find the missing measurement
A= 5
B=
C =11
Step-by-step explanation:
a^2 + b^2 = c^2
5^2 + b^2 =11^2
25 + b^2 = 121
b^2 = 121 - 25
b^2 = 96
b =9.8
I don't know if this what you need but I hope this helps
[tex]t ^{3} = \frac{64}{27} [/tex]
If t to the power of 3 = 64/27, what is the value of t? Give your answer as a fraction. Enter your answer in the boxes.
[tex] {t}^{3} = \frac{64}{27} \\ [/tex]
[tex]t = \sqrt[3]{ \frac{64}{27} } \\ [/tex]
[tex]t = \frac{ \sqrt[3]{64} }{ \sqrt[3]{27} } \\ [/tex]
[tex]t = \frac{4}{3} \\ [/tex]
20 characters or more
Answer:
2 (y-value increase as x-value also increase)
Step-by-step explanation:
Lets look at the graph! when x is 7, y is 4. and when x is 9, y is 5 which is proving that they BOTH increase
Express 0.10190 as a fraction.
An equation is shown below:
5(2x − 3) = 5
Part A: How many solutions does this equation have? (4 points)
Part B: What are the solutions to this equation? Show your work. (6 points)
Your answer:
Answer:
this equation has 1 answer
Step-by-step explanation:
x = 2
One angle of a rhombus measures 110, and the shorter diagonal is 4 inches long. How long is the side of the rhombus?
side of rhombus: 2.44 inch
Use the sine rule:
[tex]\sf \dfrac{sin(A)}{a} = \dfrac{sin(B)}{b}[/tex]
============= Let the side be "b"
[tex]\rightarrow \sf \dfrac{sin(110)}{4} = \dfrac{sin(35)}{b}[/tex]
[tex]\rightarrow \sf b = \dfrac{sin(35)*4}{sin(110)}[/tex]
[tex]\rightarrow \sf b = 2.441549178[/tex]
[tex]\rightarrow \sf b =2.44 \ in[/tex]
Answer:
3.5 in (nearest tenth)
Step-by-step explanation:
Properties of a rhombus:
Quadrilateral (four sides & four interior angles)Parallelogram (opposite sides are parallel)All sides are equal in lengthOpposite angles are equal in measureDiagonals bisect each other at right anglesInterior angles sum to 360°Adjacent angles are supplementary (sum to 180°)Diagonals bisect interior anglesTherefore, a rhombus is made up of 4 congruent right triangles.
** see attached diagram **
To find the side length of the rhombus, we need to calculate the hypotenuse of the right triangle.
As the shorter diagonal is 4 in, the base of the right triangle is 2 in
The angles that measure 110° are the angles by the shorter diagonal. Therefore, the base angle of the right triangle is 55°
Using cos trig ratio:
[tex]\sf \cos(\theta)=\dfrac{A}{H}[/tex]
where:
[tex]\theta[/tex] is the angleA is the side adjacent the angleH is the hypotenuseGiven:
[tex]\theta[/tex] = 55°A = 2H = x[tex]\implies \sf \cos(55^{\circ})=\dfrac{2}{x}[/tex]
[tex]\implies \sf x=\dfrac{2}{\cos(55^{\circ})}[/tex]
[tex]\implies \sf x=3.486893591...[/tex]
Therefore, the side of the rhombus is 3.5 in (nearest tenth)
solve x/9 + 1/3 = -4/3
The solution is x = ?
Answer:
x = - 15
Step-by-step explanation:
[tex]\frac{x}{9}[/tex] + [tex]\frac{1}{3}[/tex] = - [tex]\frac{4}{3}[/tex] ( multiply through by 9 to clear the fractions )
x + 3 = - 12 ( subtract 3 from both sides )
x = - 15
Answer:
Solve for x by simplifying both sides of the equation, then isolating the variable.
x=−15
Simplify. Write the answer with positive exponents only.
x3 x5
x3 x5 =
Answer:
1/x^2
Step-by-step explanation:
Reformatting the input :
Changes made to your input should not affect the solution:
(1): "x5" was replaced by "x^5". 1 more similar replacement(s).
Step 1:
Simplify x^3 / x^5
Dividing exponential expressions :
x^3 divided by x^5 = x ^ (3-5) = x^(-2) = 1/x^2
More help if you can! I desperately need to pass this one class
Answer:
volume of cuboid = lbh = 8.2 ft x 9.4 ft x 10.7 ft
= 824.8 ft^3
Gus bought 12 gallons of gas at $2.17
a gallon, a bottle of oil for $2.49 and
two jugs of anti-freeze for $7.98 each.
He paid $1.52 in tax for the oil and
anti-freeze. If he paid with a $50 bill,
how much change did he receive?
bro help lol
Answer:
$3.99
Step-by-step explanation:
a gallon of gas=2.17$
12 gallons of gas=2.17$×12 =26.04$
2 jugs of anti freeze =7.98$ × 2 = 15.96$
a bottle of oil = 2.49$
tax= 1.52$
total= 46.01$
he paid 50$
so the change could be 50$-46.01$ = 3.99$
the answer is 3.99$
simplify a^9xa^4
how i do this
Answer:
a13
Step-by-step explanation:
a^9 × a^4 = a(9 + 4)
= a13
18-3b for b=4
please help
Answer:
im sorry I don't know I didn't do stuff like this in school
A triangle has one angle that measures 56° and one angle that measures 63º.
The measure of the triangle's third angle is degrees.
The solution is
give the missing angle
Answer:
60°, 115°, 65°Step-by-step explanation:
Angles a and 60°, also c and 65° are alternate interior angles and therefore are equal:
a = 60°c = 65°Angles b and 65° form a linear pair, so they sum to 180°
b + 65° = 180°b = 180° - 65°b = 115°Answer:
a = 60°
b = 115°
c = 65°
Step-by-step explanation:
Alternate Interior Angles Theorem
If a line intersects a set of parallel lines in the same plane at two distinct points, the alternate interior angles that are formed are congruent (same).
Therefore, a = 60° and c = 65°
Angles on a straight line sum to 180°
⇒ b + 65° = 180°
Subtracting 65° from both sides:
⇒ b + 65° - 65° = 180° - 65°
⇒ b = 115°
Pls help me
Pls show your answer pls and thank you
Answer:
DWest I think
Step-by-step explanation:
I dont really know if this is right so pls forgive me if this is wrong.
12 times a number, x, minus 5 is ninety-one
x=8
Solution:First, multiply 12 times x, like so:12xNow, subtract 5:12x-5This expression is equivalent to 91:12x-5=91Now, add 5 to both sides:12x=91+512x+96x=8Hope it helps.
Do comment if you have any query.
[tex]12x-5 = 91\\\\\implies 12x = 91+5\\\\\implies 12x = 96 \\\\\implies x= \dfrac{96}{12}\\\\\implies x = 8[/tex]
can i have some super quick help? subject is stretching and reflecting quadratic functions
#1
Passes through
(-1,4)y=x² passes through (-1,1)
Stepped 4 times
y=4x²#2
First make a negative as parabola is opening downwards.
y=-x²Passes through (1,-2)
y=-x² passes through (1,-1)
So
final graph
y=-2x²Answer:
a) Stretched parallel to the y-axis by a scale factor of 5
b) Stretched parallel to the y-axis by a scale factor of 5/2 and reflected in the x-axis.
Step-by-step explanation:
Transformation
y = a f(x)
The graph of a f(x) is f(x) stretched parallel to the y-axis (vertically) by a factor of a.If a < 0, the graph is also reflected in the x-axisPart (a)[tex]\textsf{Parent function}:\quad y=x^2[/tex]
[tex]\textsf{Transformed function}:\quad y=5x^2[/tex]
Transformation: Stretched parallel to the y-axis by a scale factor of 5.
Part (b)
[tex]\textsf{Parent function}:\quad y=x^2[/tex]
[tex]\textsf{Transformed function}:\quad y=-\dfrac{5}{2}x^2[/tex]
Stretched parallel to the y-axis by a scale factor of 5/2 and reflected in the x-axis.