Answer:
-5a - 4
Step-by-step explanation:
Hey there! To evaluate [tex]\displaystyle \large{7a-8-12a+4}[/tex], we can do by adding up/subtracting like-terms.
Like-terms are terms that have same appearance. It must also have same degree, power and everything to be considered as like-terms.
From our expression, rearrange the terms.
[tex]\displaystyle \large{7a-12a-8+4}[/tex] , then we combine [tex]\displaystyle \large{7a-12a = -5a}[/tex] and [tex]\displaystyle \large{-8+4 = -4}[/tex]
That leaves us with [tex]\displaystyle \large{\bold{-5a-4}}[/tex]
If you have any questions regarding polynomial operation, you can always let me know in the comment!
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help me please ... :))
Answer:
See attached graphic
Step-by-step explanation:
Explained in attachment.
Can someone please help me with geometry? Thank you.
Answer:
X=10
Step-by-step explanation:
explanation is in the image above
hope this helps please mark me brainiest
3x - 8 - x greater than or equal to 2
Answer:
x ≤ 5
Step-by-step explanation:
3x - 8 - x ≤ 2 , that is
2x - 8 ≤ 2 ( add 8 to both sides )
2x ≤ 10 ( divide both sides by 2 )
x ≤ 5
2. All of the girls in Danielle’s cabin at camp are the same age. Their counselor is 3 times their age. Danielle’s age and her counselor’s ages add up to 28. Write and solve an equation that can be used to find the ages of Danielle and her counsel
Answer:
Danielle is 7 and her counselor is 21
Step-by-step explanation:
Let x be the age of Danielle and y be the age of her counselor then:
y=3x
x+y=28
We can solve this using substitution. In this case, substitute 3x for y since y=3x...
x+3x=28
4x=28
Divide both sides by 4 (division property of equality)
x=7
y=3x=3(7)=21
Danielle is 7 and her counselor is 21
In the figure shown, what is the measure of the indicated angle? °
What is the domain of the relation?
Answer:
-4 ≤ x ≤ 6
Step-by-step explanation:
left-most point is at (-4,-4) and right-most point is at (6,4)
domain is only concerned with the x-values
so the domain is between -4 and 6, inclusive
What is the measure of the
third angle of this triangle?
Answer:
20 degrees
Step-by-step explanation:
every triangle had 3 angles that all add up to 180
the problem gives you two angles which are 120+40 which is 160
180-160 is 20 degrees which is whi it is the answer
SOLVE THIS PROBLEM ASAP
Answer:
2.5
Step-by-step explanation:
Start by plugging in the given values into the equation:
v=u+at
v=3+(-2)(1/4)
Now we simplify and solve
v=3-1/2
v=2 1/2
v=2.5
(3x +20)
Find the value of x. (Hint: The sum of the angle measures of a quadrilateral is 360°)
Help pls
Answer:
x = 20°
Step-by-step explanation:
The angle opposite to 3x + 20 is also 3x + 20 (opposite interior angles)
The angle opposite to 5x is also 5x (opposite interior angles)
Solve:
Set up the equation by adding all the angles. The sum of these angles should equal 360.
(3x + 20) + (3x + 20) + (5x) + (5x) = 36016x + 40 = 36016x = 320x = 20x = 20°
-Chetan K
I WILL GIVE BRAINLES PLS ASAP Solve the rational equation x divided by 2 equals x squared divided by quantity x minus 2 end quantity, and check for extraneous solutions.
No solution
x = 0 and x = −2
x = −2; x = 0 is an extraneous solution
x = 0; x = −2 is an extraneous solution
Answer:
D) x = 0; x = −2 is an extraneous solutionStep-by-step explanation:
Given equation:
x / 2 = x² /(x - 2)We can see x = 0 is the solution as it makes both sides equal.
We have a fraction with the denominator of x - 2.
It can't equal to zero since we can't divide by zero:
x - 2 = 0x = 2 is an extraneous solutionCorrect choice is D
I need help asap please
Find the value of each variable in the parallelogram.
Step-by-step explanation:
diagonals bisect
5u-10= 2u+2
3u = 12
u=4
v/3 = 6
v=18
solve each problem:
given: mfind: ak, al, kl
Which equation would best help solve the following problem? Hideki throws a baseball ball upward with an initial velocity of 12 m/s. When he throws the ball, it is 2 m above the ground. How long will it take the ball to hit the ground? - 16t2 + 12+ + 2 = 0 -4.91? + 12+ + 2 = 0 2 -4.912 + 12t = 2 0 4.912 + 12t +2 = 0
For this case we have the following kinematic equation that models the problem:
h (t) = (1/2) * (- 9.8) * t ^ 2 + 12 * t + 2
Rewriting we have:
h (t) = -4.9 * t ^ 2 + 12 * t + 2
When the ball hits the ground we have:
-4.9 * t ^ 2 + 12 * t + 2 = 0
Solving the polynomial we have:
t1 = -0.16
t2 = 2.61
We ignore the negative root because it is time.
Answer: It will take the ball to hit the ground about:
t = 2.61 sec
Need it now! Correct answer step by step gets brainliest!
In the given figure, ray AZ bisects ∠BAD and ∠DCB. Prove the following and state reasons:
(a) ΔBAC is congruent to ΔDAC.
(b) AB=AD
(c) CD=CB
Answer:
a.)In ∆BAC AND ∆DAC
ANGLE DAC = ANGLE BAC(GIVEN)
ANGLE DCA = ANGLE BCA (Given)
AD IS A COMMON SIDE
SO, ∆BAC congruence ∆DAC (A.S.A)
b.)Yes AB=AD (C.P.C.T.)
c.)Yes CD=CB(C.P.C.T.)
Hope that helps
The answer I need a lot of helpppppppp
Answer:
h = d/60 - 1/3 = d-20/60
Step-by-step explanation
To simply put it let's say if you are able to make this trip by car without stopping. Nonstop drive: 501 miles or 806 km Driving time: 7 hours, 42 minutes.
write a system of linear inequalities represented by the graph.
Answer:
Inequality 1: y ≤ 5x + 1 Inequality 2: y > x -2
Explanation:
the first line is intersecting the y-axis at 1
coordinates = ( 0 , 1 ) , ( -1 , -4 )
slope of the first line = (y2-y1)/(x2-x1)
= (-4-1 )/(-1-0)
= -5/-1
= 5
so equation: y = mx + b ....where m is the slope and b is y-intercept.
→ y ≤ 5x + 1 .........as equals to and greater than
the second line is intersecting the y axis at -2
coordinates = ( 2 , 0 ) , ( 0 , -2 )
slope of second line = (y2-y1)/(x2-x1)
= (-2-0)/(0-2)
= 1
so equation: y = mx + b ....where m is the slope and b is y-intercept.
→ y > x -2 ..........as dotted represents not equals to.
You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. You can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. How long does it take you to ride around the neighborhood?
Evaluating Expressions
Answer: 13. -12 , 14. 40 , 15. 16 , 16. 4.5
Step-by-step explanation:
What are the smallest and greatest factors of 340?
Answer:
All Factors of 340: 1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170 and 340.
Prime Factors of 340: 2, 5, 17.
Prime Factorization of 340: 22 × 51 × 171
Sum of Factors of 340: 756.
Step-by-step explanation:
please help ASAP i really need help
ray is constructing a flower bed for the zoo and wants to know if he has enough edging. A sketch of flowerben is shown below. What is the perimeter of the triangle? round to the nearest whole number
The perimeter of the triangle will be 41ft
The perimeter of a triangleThe perimeter of a triangle is the sum of all the sides of the triangle
From the given triangle, we need to get the third sidee firse as shown:
h² = 12² + 12²
h² = 144 + 144
h² = 288
h = 17ft
Perimeter = 12 + 12 + 17
Perimeter = 41ft
Hence the perimeter of the triangle will be 41ft
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Answer: 41 ft
Step-by-step explanation:
CAN SOMEONE HELP ASAP ⚠️I WILL LITERALLY GIVE YOU ANY POINTS THANK YOU ITS DUE TOMORROW I WILL MARK YOU AS BRAINLIEST PIC BELOW COULD YOU EXPLAIN IT SO I KNOW WHAT DO ON THE OTHER QUESTIONS THANKS
Answer:
Area = 28 cm²
Step-by-step explanation:
The formula for trapezoids is (a + b)/2 · h
In this case, a = 6
b = 8
h = 4
Plug in the numbers into the formula.
A = (a + b)/2 · h
A = (6 + 8)/2 · 4
A = (14/2) · 4
A = 7 · 4
A = 28
**Another trapezoid formula you might know it by is also..
A = 1/2(b₁ + b₂)h
I suggest memorizing the formula. If you know the formula, you'll be set! All you will do is plug in the numbers. I'm not sure if this will help, but b₁ (or a) is the top measurement. In this case, it's 6 cm. And the b₂ (or b) is the bottom measurement, which is 8 cm in this case. The h or height is obviously 4 cm in this example.
help please and add an explanation thank youuu
All the students at the birthday party came with
presents. 1/4 of the students brought balloons,
1/8 of the students brought gift cards, and the
rest brought a wrapped gift. What fraction of
the students brought a wrapped gift?
Find the area and the circumference of a circle with radius 2ft .
Use the value 3.14 for , and do not round your answers. Be sure to include the correct units in your answers.
Answer:
Area & Circumference = 12.56ft
Step-by-step explanation:
The formula for area of a circle is πr^2
r = 2
π = 3.14
(3.14) x (2^2)
(3.14) x (4) = 12.56
The formula for circumference of a circle is 2πr
r = 2
π = 3.14
2 x (3.14) x 2
(3.14) x (4) = 12.56
what will be the nearest integer to
77.386
The nearest integer to 77.386 is 77
Hope this answer helps you
Answer:
THE NEAREST INTEGER TO 77.386 IS 77
Step-by-step explanation:
HOPE THIS HELPS
Which ratio is equal to 10:5?
Answer:
2:1
Step-by-step explanation:
Can you solve this? The subject is about solving equations using addition and subtraction.
Answer:
$5.25
Step-by-step explanation:
add all the prices up and subtract it from $15
bumper cars : 1.75
giant slide : 1.75 - .50 = 1.25
ferris wheel : 1.25 + 1.50 = 2.75
roller coaster : 2.75 + 1.25 = 4.00
1.75 + 1.25 + 2.75 + 4.00 = 9.75
15 - 9.75 = 5.25
F(x) = 8x2 – 2x 3 g(x) = 12x2 4x – 3 What is h(x) = f(x) – g(x)? h(x) = 20x2 2x h(x) = –4x2 – 6x h(x) = –4x2 – 6x 6 h(x) = –4x2 2x.
To add or subtract the two quadratic or polynomial equation, add or subtract the same power variables from each other.
The result of the difference of the given quadratic equation is,
[tex]h(x)=-4x^2-6x+6\\[/tex]
Hence option 3 is the correct option.
What is quadratic equation?A quadratic equation is the equation in which the unknown variable is one and the highest power of the unknown variable is two.
The standard form of the quadratic equation is,
[tex]ax^2+bx+c=0[/tex]
Here, [tex]a,b,c[/tex] is the real numbers and [tex]x[/tex] is the variable.
To add or subtract the two quadratic or polynomial equation, add or subtract the same power variables from each other.
Given information-
The given quadratic equations are,
[tex]f(x)=8x^2-2x+3[/tex]
[tex]g(x)=12x^2+4x-3[/tex]
The function [tex]h(x)[/tex] is the difference of the two given functions. Thus,
[tex]h(x)=f(x)-g(x)[/tex]
Put the values,
[tex]h(x)=(8x^2-2x+3)-(12x^2+4x-3)[/tex]
Open the brackets by multiplying with sign as,
[tex]h(x)=8x^2-2x+3-12x^2-4x+3[/tex]
Separate the terms with same power of variable as,
[tex]h(x)=8x^2-12x^2-2x-4x+3+3\\[/tex]
To add or subtract the two quadratic or polynomial equation, add or subtract the same power variables from each other.Thus,
[tex]h(x)=-4x^2-6x+6\\[/tex]
Thus the result of the difference of the given quadratic equation is,
[tex]h(x)=-4x^2-6x+6\\[/tex]
Hence option 3 is the correct option.
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Answer:
c
Step-by-step explanation:
magic
