Plz help me!!
I have no clue how to do this because my teacher moves to fast for me. If you can help out that would be really appreciated!!
Answers
Answer:
1. x = 65
2. x = 40
3. x = -7
4. x = -4
5. x = -7
6. x = 4
Step-by-step explanation:
Angles in a triangle always add up to 180 degrees.
Thus, for each triangle you can write an equation setting the sum of the three angles equal to 180, and solving for x.
1. 180 = 80 + 35 + x
180 - (80 + 35) = x
180 - 115 = x
65 = x
2. 180 = 70 + 70 + x
180 - (70 + 70) = x
180 - 140 = x
40 = x
3. 180 = 76 + 41 + (x+ 70)
180 - (76 + 41) = x + 70
180 - 117 = x + 70
63 = x + 70
63 - 70 = x
-7 = x
4. (the red square means its a right angle = 90 degrees)
180 = 90 + 25 + (x + 69)
180 - (90 + 25) = x + 69
180 - 115 = x + 69
65 = x + 69
65 - 69 = x
x = -4
5. 180 = 50 + (57 +x) + (x + 87)
180 - 50 = (57 +x) + (x + 87)
130 = (57 +x) + (x + 87)
combine like terms
130 = 144 + 2x
130 - 144 = 2x
-14 = 2x
-7 = x
6. 180 = 80 + (9x + 4) + (16x - 4)
180 - 80 = (9x + 4) + (16x - 4)
100 = (9x + 4) + (16x - 4)
combine like terms
100 = 25x + 0
100 = 25x
4 = x
Related Questions
Help! 4 √5 - √3 + 3√5
Answers
Answer:
1.47327392
Step-by-step explanation:
Answer:
7 √5 - √3
Step-by-step explanation:
collect like terms:
(4 √5 - √3 + 3√5)
This table shows the number of marbles in a bag by color. If one marble is randomly selected from the bag, what is the
probability that it will be a blue or a red marble?
Answers
Answer:
I would say it would be in the middle
Step-by-step explanation:
Answer: the answer would be 52% :)
Step-by-step explanation:
Explain the importance of using the square of the scale factor to calculate the area of a dilated figure
Answers
Answer:
2
Step-by-step explanation:
2+2=4 therefore 2x2 also equals 4, 4/2=2.
In mathematics and geometry, a dilation is an enlargement in size or a reduction in size of a mathematical object. We perform a dilation of a square by placing the shape on a coordinate plane and multiplying each of the coordinates of the vertices of the square by the same number, called the scale factor. This can also be achieved by multiplying the lengths of each of the sides of a square by the scale factor.
When we dilate a square by a scale factor of k, its sides increase by a factor of k, its area by [tex]k^{2}[/tex], and its volume by [tex]k^{3}[/tex].
So, this is the importance of using the square of the scale factor to calculate the area of a dilated figure.
What is Square?
Square, in geometry, a plane figure with four equal sides and four right (90°) angles. A square is a special kind of rectangle (an equilateral one) and a special kind of parallelogram (an equilateral and equiangular one).
What is scale factor?
The scale factor is a measure for similar figures, who look the same but have different scales or measures. Suppose, two circle looks similar but they could have varying radii. The scale factor states the scale by which a figure is bigger or smaller than the original figure.
What is dilation?
In mathematics and geometry, a dilation is an enlargement in size or a reduction in size of a mathematical object. We perform a dilation of a shape by placing the shape on a coordinate plane and multiplying each of the coordinates of the vertices of the shape by the same number, called the scale factor.
According to question, we have to explain the importance of using the square of the scale factor to calculate the area of a dilated figure.
When we dilate a square by a scale factor of k, its sides increase by a factor of k, its area by [tex]k^{2}[/tex], and its volume by [tex]k^{3}[/tex].
In mathematics and geometry, a dilation is an enlargement in size or a reduction in size of a mathematical object.
We perform a dilation of a square by placing the shape on a coordinate plane and multiplying each of the coordinates of the vertices of the square by the same number, called the scale factor.
This can also be achieved by multiplying the lengths of each of the sides of a square by the scale factor.
Hence, these are the importance of using the square of the scale factor to calculate the area of a dilated figure.
Learn more about dilation here:
https://brainly.com/question/13176891?referrer=searchResults
#SPJ2
In a marketplace, a box of peaches can be purchased for $77.95 per box. One box
contains 78 peaches. How much would you have to pay to buy 4 peaches?
(Hint: Convert 4 peaches into dollars.)
Round your answer to the nearest hundredth. Do not type the units ($) in the space
below.
Answers
Answer:
4
Step-by-step explanation:
This question can be solved by proportions, using rule of three.
We have that:
You buy 78 peaches for $77.95. How much you pay to buy 4 peaches?
78 peaches - $77.95
4 peaches - x
[tex]78x = 4*77.95[/tex]
[tex]x = \frac{4*77.95}{78}[/tex]
[tex]x = 4[/tex]
You pay $4 for 4 peaches.
Which graph represents x > 23
A. 23 To the right
B. 23 to the left
In a number line?
Answers
Answer:
eStep-by-step explanation:
O
14) What is the vertex form y = 3x2 - 12x + 17?
A) y = 3(x - 2)2 +5
B) y = 3(x - 2)2 + 17
C) y = 3(x - 2)2 + 11
D) y = 3(x + 2)2 + 5
I
Answers
Answer:
the vertex is 14yx
Step-by-step explanation:
Given an absolute value function f(x)=|x|, what is the effect of adding a constant k to the function?
Answers
Answer: the graph of the resulting function, |x| + k, is the graph of f (x) shifted k units up
Step-by-step explanation:
just took the test
EASY ANSWER PLEASE WANT BRAINLEIST SURE JUST ANSWER!
Answers
Answer:
can i have brainliest i answered in the question spot
Step-by-step explanation
A submarine descended 3/4 of a kilometer in 1/4 of an hour. What was the submarine's rate of descent?
Answers
What type of transformation transforms (a, b) to (-a, b)?
a reflection over the y-axis
a translation of 1 unit down
a reflection over the x-axis
a translation of 1 unit up
Answers
Answer:
A reflection over the y axis .
Step-by-step explanation:
Given : Transforms (a,b) to (-a,b).
To find : What type of transformation.
Solution : We have given
Parent function : (a,b) .
Transformed : (-a ,b).
Transformation rule of reflection over y axis : ( x, y) →→ ( -x ,y).
Then we can say in transformation (a,b) →→→→ (-a,b).
Therefore, A reflection over the y axis
Step-by-step explanation:
plz brain list
Answer:
hes right i took the test
Step-by-step explanation:
what is a scale? in math
Answers
Here, for instance, the scale of the graph is 1 interval being equal to 10 units
A line has a slope of -1/10
and includes the points (1, -6) and (t, -5). What is the value of t?
Answers
Answer:
-9
Step-by-step explanation:
Here we use the slope formula: m= y2-y1/x2-x1. We simply plug in the numbers we know: -1/10 = -5+6/t-1. Then we solve for t. Multiply both sides by (t-1) so -1/10 (t-1)= 1. Then multiply both sides by -1/10 so t-1= -10 and then add one to both sides so t=-9.
Explain answer !
( Will give brainlst)
Answers
1/4 = 0.25
Root 3 = 1.732...
So smallest to biggest: 1/4, root 3, Pi
so from least to greatest it would be ordered,
1/4, square root of 3, and pie.
−5.55−8.55c+4.35c answer please
Answers
Answer:
-5.55- 4.2c hope this helps
Step-by-step explanation:
What is the GCF of 48mn and 81m?n??
О Зmn
О Зmn
О. 48men
О 129m52
Answers
Answer:
3m2n is the answer this answer but I dotnsee its s an option
Pls help extra points and mark brainlist
Answers
Answer:
(12)3=36
Step-by-step explanation:
i don't know.. I think this is what the question is trying to say XD
Answer:
(12)3=36
Step-by-step explanation:
what wasbthe high temperature bon the 6th day of the trip
Answers
Choose the correct simplification of (7x^3 – 4x - 8) + (2x^3 + 3x + 2).
Answers
Answer:
9[tex]x^{3}[/tex]-x-6
Step-by-step explanation:
Answer:
=9x3−x−6
Step-by-step explanation:
7x3−4x−8+2x3+3x+2
What does |-7| equals ?
Answers
Answer:
7
Step-by-step explanation:
Answer:
the answer is 7
Step-by-step explanation:
when the lines are around it it means to find the value without a sign
If q is a rational number and r is a real number,
then q + r is
Answers
Answer:
(D)
Step-by-step explanation:
~a rational number....I hope it helps
5 tenths - 2 tenths = 3 tenths in standard form
Answers
Answer:
5×10-2×10=3×10
50-20=30i think
Please hurry; The number of bacteria in a culture grows exponentially. It can be modeled with the function f(x) = 20 (2^x).
How many more bacteria will there be after six hours?
a 12
b 32
c 960
d 1280
Answers
Answer:
D.
Step-by-step explanation:
20(2^6) = 1280
Questions are in the picture need ASAP 14 points :)
Answers
Answer:
x = k + 7
x = k + 3
Step-by-step explanation:
Answer:
Step-by-step explanation:
If we are solving for x here are the answers;
x=k+7
x=k+3
If we are solving for k here are the answers;
k=x-7
k=x+3
PLEASE HELP ITS URGENT
DONT GUESS
WILL MARK BRAINLIEST
Answers
Answer:
5ft
Step-by-step explanation:
13ft -8ft = 5ft
Two websites sell the same type of headphones.
Website A
Website B
Cost of headphones
£49.95
£47.68
Cost of postage
£4.39
£6.95
Including the cost of postage which website is cheaper and by how much
Answers
This recipe makes 18 shortbread fingers.
Rose follows this recipe, but only wants to make 3 fingers.
How much of each ingredient does she need?
Recipe: Makes 18
120 g butter
60 g sugar
180 g flour
Answers
(I don't know if this is the method you are supposed to use, but I believe you will still get the same answer!)
Answer: 20 g butter, 10 g sugar, 30 g flour
Step-by-step explanation: First off, if we look at 3 and 18, you notice that three is a factor or 18, going into the number 6 times.
So, if you are making 6 times less of the original amount, divide each measurement by six to give you your answer.
120/6 = 20
60/6 = 10
180/6 = 30
10g sugar
30g flour
Is the following statement true? Explain.
" For any two angles A and B, cos (A+B)=cos (A)+cos (B) "
Answers
Step-by-step explanation:
We can prove the statement is false by proof of contradiction:
We know that cos0° = 1 and cos90° = 0.
Let A = 0° and B = 90°.
Left-Hand Side:
cos(A + B) = cos(0° + 90°) = cos90° = 0.
Right-Hand Side:
cos(A) + cos(B) = cos(0°) + cos(90°)
= 1 + 0 = 1.
Since LHS =/= RHS, by proof of contradiction,
the statement is false.
In which region are the patient counts most similiar
Answers
HELP ASAP!!! Identify the interior angles and explain how you know. THANKS!!
Answers
Answer:
interior angles are /_3,/_4,/_5 and /_6
Helpppppp meeeeeeeeee
Answers
Answer:
The temperature needs to rise 1.5 degree C to reach 0 degree C.
Step-by-step explanation:
-1.5+1.5=0