Answer:
-3
Step-by-step explanation:
The additive inverse of a number means that the sum of the number, and it's additive inverse will always be zero. The additive inverse is found by simply negating a number or making it opposite.
Therefore, 3 + x = 0, 3 - 3 + x = 0 - 3, x = -3. (x represents it's additive inverse)
Just keep in mind that finding it's additive inverse is usually the best way to do it.
Here are some ways to negate a number:
Zero subtracted by the number. (0 - n) not (n - 0).Multiplying or dividing the number by negative one. (n / -1 or n × -1)Subtracting a number by the second multiple of itself. (n - 2n) not (2n - n).________________________________
3(a+3)+6=30 Solve for a.
Answer:
a = 5
Step-by-step explanation:
3 (a + 3) + 6 = 30
Use the distibutive property to multiply 3 by a + 3
3a + 9 + 6 = 30
Add 9 and 6 to get 15
3a + 15 = 30
Subtract 15 from both sides
3a = 30 - 15
Subtract 15 from 30 to get 15.
3a = 15
Divide both sides by 3.
a = 15/3
Divide 15 by 3 to get 5
a = 5
Mr. Santos wanted to know the height of the tree. He observed from a point A that the angle of elevation of the top of the tree is 36 degrees. He then moved backwards 50 ft away from the initial point A, the angle of elevation of the top of the tree was 22 degrees. Find the height of the tree.
Answer:
The height of the tree is approximately 45.51 ft.
Step-by-step explanation:
The given information are;
The angle of elevation of the top of tree is 36 degrees
The distance backwards Mr. Santos moved = 50 ft.
The new angle of elevation of the top of the tree = 22 degrees
Therefore, we have;
The angle opposite to the 50 ft. side = 180 - (180 - 36) - 22° = 14°
Therefore, we have, by sine rule;
50/(sin(14)) = X/(sin(22))
X = (sin(22)) × 50/(sin(14)) ≈ 77.42 ft.
The height of the tree, T = X × sin(36°)
T = 77.42 ft. × sin(36°) ≈ 45.51 ft.
The height of the tree is approximately 45.51 ft
3(5x+2)=2(3x-6)
help i need to show work and I have no idea how to do this
Answer: its −2
Step-by-step explanation:
3*(5*x+2)-(2*(3*x-6))=0
Step by step solution :
STEP
1
:
STEP
2
:
Pulling out like terms
2.1 Pull out like factors :
3x - 6 = 3 • (x - 2)
Equation at the end of step
2
:
(3 • (5x + 2)) - 6 • (x - 2) = 0
STEP
3
:
Equation at the end of step 3
3 • (5x + 2) - 6 • (x - 2) = 0
STEP
4
:
STEP
5
:
Pulling out like terms
5.1 Pull out like factors :
9x + 18 = 9 • (x + 2)
Equation at the end of step
5
:
9 • (x + 2) = 0
STEP
6
:
Equations which are never true
6.1 Solve : 9 = 0
This equation has no solution.
A a non-zero constant never equals zero.
Solving a Single Variable Equation:
6.2 Solve : x+2 = 0
Subtract 2 from both sides of the equation :
x = -2
One solution was found :
x = -2
Solving Inequalities
-4x/5 < 20
(Show your work)
Answer:
x > -25
Step-by-step explanation:
Write it out: [tex]-\frac{4x}{5} < 20[/tex] Multiply each side by 5 to cancel out the 5 under -4x. It should now look like this: -4x < 100Divide each side by -4 to cancel out the -4 next to x. It should now look like this: x > -25I hope this helps!
what is the additive inverse of x+3
Answer:
-x-3
Step-by-step explanation:
(x+3) + the additive inverse = 0
the additive inverse = -(x+3)
Find the next three term of this sequence 3.2,4.3,5.4,
Answer:
6.5, 7.6, 8.7
Step-by-step explanation:
It increases by 1.1 each time.
What is the midpoint of a segment with endpoints at (3,5) and (7,7)
Answer:
5,6
Step-by-step explanation:
its a guesssssssssssssssssssssss
PLEASE HELP MEEEEEEEEE
Q7) ) Match each rectangular sequence with the oval nth term expression card. ( write the number of the formula against the letter of the sequence, eg: card F- card vi) *
PLEASE HELP WILL GIVE BRANI FOR ANY RIGHT ANSWER
Answer:
the bottom left one error is on step 3
Step-by-step explanation:
Answer:
poines
Step-by-step explanation:
I need help with this question.
Answer:
B!
Step-by-step explanation:
A contractor purchases ceramic tile to remodel a kitchen floor. Each tile costs $4.00, and the adhesive and grouting material needed for the whole job costs $15.82. The contractor is charged a total of $655.82, how many ceramic tiles did the contractor purchase?
Answer:
160 tiles.
Step-by-step explanation:
First let's make an equation.
Each tile costs $4, let's make t=number of tiles.
+$15.82, and the total cost being $655.82
So ideally our equation would look like
4t+15.82=655.82
Now solve.
First, subtract 15.82 on both sides.
4t=640
Second, divide 4 on both sides to make the variable t by itself.
t=160
So, the contractor purchased 160 tiles.
Number 4. I need help finding the value please help
Answer:
Step-by-step explanation:
which of the following best describes this graph?
Answer:
B. y=x^2 +7x +10
Step-by-step explanation:
This year Ana’s mother is 2 years more than 3 times Ana’s age.
Answer:
m= 3a + 2
Ana's mother is "m"
Ana is "a"
The cost of a layer cake is $17 plus $5 per layer. If Paul has only $30 to spend on a cake, what is the most number of layers he can afford?
(Show how to solve it)
Answer:
The most number of layers he can afford is 2
Step-by-step explanation:
We automatically have a fee of 17 so we know we have 13 dollars remaining. Using this information, we know that one layer is 5 dollars which means we can get 2 layers which is equal to 10 dollars which turns our total fee to $27. Hope this helps!
what is the slope and y intercept of y= -3x + 2
Answer:
The slope: -3
Y-intercept: 2
Step-by-step explanation:
Answer: The slope is -3 and the y intercept is 2.
Step-by-step explanation:
The slope is the number acting as the coefficient, which is being multiplied by the variable x and the y intercept is the constant value which never changes.
Multiply:
2 × (–21) × 7
Answer: 294
Step-by-step explanation: multiplying 2 x -21 = 42 42 x 7 = 294
Kaylee is selling candles to raise money for her lacrosse team. The large candles sell for $25 each and the
small candles sell for $10 each. She needs to raise $600. Write a function to represent how many of each type of candle Kaylee needs to sell. Let x represent the number of large candles, and let y represent the number of
small candles
Answer:25(20)+10(10)=600
X Y
Step-by-step explanation: sell 20 (X) Large candles and sell 10 (Y) small candles
In a recent year, about 20,700,000 passengers traveled by train in the United States. What is this number
written in scientific notation?
A
2.07 x 108 passengers
B
2.07 x 104 passengers
C
2.07 x 107 passengers
D
2.07 x 10
passengers
[tex] - 5 {u}^{4} \times ( {u}^{4} )[/tex]
PLEASE HELP ME
help please! I am doing multivariable equations.
Answer:
(c+3b)/8 = a
Step-by-step explanation:
c = 8a -3b
Add 3b to each side
c +3b = 8a-3b+3b
c +3b = 8a
Divide each side by 8
(c+3b)/8 = 8a/8
(c+3b)/8 = a
Triangle congruence
Answer:
Please provide more details.
Step-by-step explanation:
11. Given h(x) = 3x + 7, what is the value of h(-2.5) ?
Answer: It's -0.5 when substitute the value of x into the right side and solve
Note this answer is from someone else.. I came here for the same question lol
30 POINTS!!
HELP ME PLZZ THIS IS DUE TOMRROW !!!
Answer:
Commutative property
Step-by-step explanation:
Solve for g
-3+5+6g=11-3g−3+5+6g=11−3g
Answer:
ok the number you have you mulitiply it then you add the number you multipled then you will get you answer
Step-by-step explanation:
hope this works
Answer:
g = 1
Step-by-step explanation:
How do I round up this number 86,088
Answer:
86,000
Step-by-step explanation:
You look at the 88 and 88 would round up to one, but since 1 is less than four the number becomes 86,000
Which of the following quadratic equations has no real solutions?
A 3x2 + 12x + 12 = 0
B 3x2 – 3x - 18 = 0
3x2 + 2x + 1 = 0
D
3x2 – 3 = 0
Answer:
C. 3x^2 + 2x + 1
Step-by-step explanation:
A. 12^2 - (4*3*12) = 0 (there's one solution.)
B. (-3)^2 - (4*3*-18) = 255 (there're 2 real solutions.)
D. 3^2 - (4*0*-3) = 9 (there're 2 real solutions.)
C. 2^2 - (4*3*1) = -18 ✅✅
if b^2 - 4ac = negative then we can say that there isn't any real solution for the equation.
how can i get 6 from four 6s . 6?6?6?= 6 we have to use -,+, division or multiplication
Answer:
ur wegfew
Step-by-step explanation:
Answer:
6?6?6?6?=6 can be 6+(-6)+*6+6which is equal to 6
I MADE ONE OF THE SIXS NEGATIVE SO, IT CAME AS 6+ NEGATIVE 6=0 AND THEN MULTIPLIED ONE SIX SO, 0*6=0 AND THEN FOR THE LAST SIX I MADE IT ADDITION SO, 0+6=6
AND THUS, FINAL ANSWER BECAME 6 ITSELF
freeZ Pointz!!!!!!!!!
Answer:
thankk youu
Step-by-step explanation:
6/x + 8/x+5 = 3
What is x
Answer:
x = -7
Step-by-step explanation:
6/x + 8/x + 5 =3
5x + 14 /x =3
Step 1: Multiply both sides by x.
5x+14=3x
5x+14−3x=3x−3x(Subtract 3x from both sides)
2x+14=0
2x+14−14=0−14(Subtract 14 from both sides)
2x=−14
2x
2
=
−14
2
(Divide both sides by 2)
x=−7
Check answers. (Plug them in to make sure they work.)
x=−7(Works in original equation)
Answer:
-7
Step-by-step explanation:
Solve for
x
by cross multiplying.
x
=
29
