HELP ME PLEASE!!!!!!
Beth enlarged the triangle below by a scale of 5. She found the area of the enlarged triangle. Her work is shown below.
What was Beth’s error?
She should have divided One-half (4) (3.5) by 5.
She should have divided One-half (4) (3.5) by 5 squared.
She should have multiplied (4) (3.5) by 5.
She should have multiplied One-half (4) (3.5) by 5 squared.
Answers
Answer:
The possible error made by Beth is directly multiplying scale of 5 to area of original triangle and getting area of enlarged triangle, which is wrong.
Step-by-step explanation:
Originally Triangle has height =3.5cm and width=4cm
Beth enlarged the same triangle by scale of 5 and calculate area of triangle
The area of triangle as given as A= $$\frac{1}{2} \texrm{ (base) (height)}$$
Area of original triangle is A =$$\frac{1}{2}(3.5 \times 4)$$
Since, The triangle is enlarged by scale of 5
New height =3.5x5 = cm and new width=4x5cm
Area of new triangle is
A' = $$\frac{1}{2} (\textrm{new width} ) ( \textrm{new height})$$
A' = $$\frac{1}{2}(3.5 \times 5)(4\times 5)$$
A' = $$\frac{1}{2}(3.5 \times 4)(5^{2})$$
A' = $$A (5^{2})$$
Now, Looking what error beth made is:
Beth found Area of new triangle is A' = $$\frac{1}{2}(3.5)(4)(5)$$
The possible error made by Beth is directly multiplying scale of 5 to area of original triangle and getting area of enlarged triangle, which is wrong.
Answer:
b
Step-by-step explanation:
Related Questions
A quadrilateral has angle measures of 41 52 and 54 which is the measure of the last angle
Answers
Answer:
213 degrees
Step-by-step explanation:
A quadrilateral has an internal measurement of angles of 360 degrees. Given that we have 3 measures of the angles, we simply need to find the 4th. This can be accomplished with the following equation:
x + 52 + 54 + 41 = 360
x + 52 + 95 = 360
x + 147 = 360
x = 213
Hence, the measure of the final angle is 213 degrees.
Cheers.
simplify(1\2)^4 1\16 1\8 1\4
Answers
Step-by-step explanation:
(1\2)^4 x 1\16 x 1\8 x 1\4 [1/2^4=16]
1/16 x 1/512
=>1/2048
a table is on sale for 72% off. the price is $246.40. What is the regular price
Answers
Answer:
$68.99
Step-by-step explanation:
This is called percentage decrease:
(100 - 72)% = 28%
246.40 × 28/100
= $68.99
how can you find the value of the expression -5 + 12 + 10 - 7
Answers
Answer:
-5 +12+10-7
-5+12=7
7+10=17
17-7=10
Answer:
10
Step-by-step explanation:
-5+12+10-7
-12+22=
10
hope it helps!
Cynthia besch wants to buy a rug for a room that is 20 ft wide and 33 ft long. She wants to leave a uniform strip of floor around the rug. She can afford to buy 378 ft² of carpeting. What dimensions should the rug have?
Answers
Answer:
Length of rug = 14 ft
Width of rug = 27 ft
Step-by-step explanation:
Given:
Length of rug = 20 ft
Width of rug = 33 ft
Area she afford = 378 ft²
Find:
New sides
Computation:
Assume;
Uniform strip = x
So,
Length of rug = 20 - x ft
Width of rug = 33 - x ft
Ares = l × b
[20-x][33-x] = 378
660 - 20x - 33x + x² = 378
x² - 53x + 282
x² - 47x - 6x + 282
x(x-47) -6(x-47)
So,
x = 6 and x = 47
X = 47 not be taken, So x=6
Length of rug = 20 - 6 ft
Width of rug = 33 - 6 ft
Length of rug = 14 ft
Width of rug = 27 ft
this is true or false? and why.
Answers
Can someone help me with this
Answers
The definition of a triangle is a polynomial with 3 sides and interior angles adding up to 180.
Using the definition, we can create an equation.
[tex]180=42+31+x[/tex]
[tex]180=73+x[/tex]
[tex]x=107[/tex]
The measure of the third interior angle is 107 degrees.
Hope this helps.
頑張って!
Answer:
107
Step-by-step explanation:
triangle angles = 180
31 + 42 = 73
180 - 73 = 107
Is 4/15 and 0.26 equivalent and why
Answers
Answer:
no. because if you divide 4/15 you will get 0.266666.....
Russell runs 9/10 miles in 5 minutes. At this rate, how many miles can he run in one minute
Answers
Answer:
9/50 miles
Step-by-step explanation:
9/10 miles in 5 minutes
= 9/50 miles in 1 min
An actor gains 20 pounds for a part and then loses 15 pounds during the filming of the movie to go along with the story. How many pounds is the actor above or below his original weight?
Answers
Answer:
5 pounds above his original weight
Step-by-step explanation:
An actor gains 20 pounds for a role in a movie
He loses 15 pounds during the movie to blend with the story line of the movie
Since he gained 20 pounds and loses 15 pounds
20 pounds -15 pounds
= 5 pounds
Hence the actor is 5 pounds above his original weight
Is 1/2 rational or a not whole interger
Answers
Answer:
Every integer is a rational number, numbers like 1/2,and -3/7 are also rational, It is an Rational number
Step-by-step explanation:
The width of kevin's yard is three times the width of his garage, increased by 12 feet. What expression describes the width of kevin's yard if g represents the width of his garage?
Answers
Answer:
The expression that describes the width of Kevin’s yard is (3g + 12) feet
Step-by-step explanation:
This is an expression problem.
From the question, we are made to know that the width of the yard is 3 times the width of the garage increased by 12 feet.
Now, we are told that the width of the garage is g feet and we want to find the width of the yard.
The width of the yard will be g feet * 3 + 12
Mathematically that would be 3g + 12 feet
For a fundraiser, Jose sold a total of 111 Snickers and Twix bars.
He sold twice as many snicker bars as he sold Twix bars. How many candy bars did he sell of each?
Answers
Answer:
hello
Step-by-step explanation:
hello
Which of the expressions has a sum of 15.41? Select all that apply. A. 11 . 38 + 4 . 03 B. 10 + 5 . 41 C. 12 . 38 + 2 . 93 D. 9 . 2 + 6 . 21 E. 7 . 54 + 6 . 87
Answers
Answer: A. 11 . 38 + 4 . 03
B. 10 + 5 . 41
D. 9 . 2 + 6 . 21
Step-by-step explanation:
Step 1
Compute the sum of the given options
a) 11 . 38 + 4 . 03 = 15.41
b) 10 + 5 . 41= 15.41
c) 12 . 38 + 2 . 93= 15.31
d) 9 . 2 + 6 . 21 =15.41
e) 7 . 54 + 6 . 87=14.41
Step 2
Eliminate the expressions that do not give a sum of 15.41 , we have
a) 11 . 38 + 4 . 03 = 15.41
b) 10 + 5 . 41= 15.41
d) 9 . 2 + 6 . 21 =15.41
Therefore, the expressions with sum of 15.41 are A, B and D
7r-9s+2r
evaluate for the following expressions for r=7,s=-2 and t=5
Answers
Answer:
91
Step-by-step explanation:
7(7) - 9(-2)+2(7)
=142+49
=91
Answer:
81
Step-by-step explanation:
Simplify it first:
7r-9s+2r = 7(7)-9(-2)+2(7) = 49-(-18)+14
(Since you have 49-(-18) it automatically becomes addition/a positive.)
So you have 49+18=14 which equals 81.
Hope this helps :)
Graph the solution of this inequality:
3/7 (35x - 14) ≤ 21x/2 + 3
Answers
Answer:
I'm terrible at explain so here's a screenshot
- Ripper
Step-by-step explanation:
Answer:
Second line with filled in hole at the two going to the left.
Step-by-step explanation:
Trevor picked 5 ⅗ pounds of cherries. He distributed them evenly into 12 containers. How many pounds of cherries were in each container?
Answers
Answer:
7/15
Step-by-step explanation:
For me, it is easier to take the 3/5 and put it in decimal form which is .6 and add the 5 to it, making 5.6, and then in a calculator put in 5.6 divided by 12 and you should get a big decimal that's pretty big but if you have a graphing calculator and convert that to a fraction and you should get 7/15, This is a pretty lazy way of me doing it but that's how I did it.
classify each number below as an integer or not
1) 51
2) 3/4
3) 59
4) 0.96
5) -9/1
Answers
Answer:
Integers are whole numbers such as 1, 2, 3 , 4, 5
1) 51 —> will classify as a integer because it’s a whole number
2) 3/4 —> would not classify as an integer because it’s a fraction not a whole number
3) 59 —> will classify as a integer because it’s a whole number
4) 0.96 —> would not classify as an integer because it’s a decimal not a whole number
5) -9/1 —> would not classify as an integer because it’s a fraction not a whole number
- 5у - 25 - - 40
What is y
Answers
A petri dish contained 130,504 bacteria. A scientist let the bacteria grow until there were 75,062 more of them. How many bacteria are there now? bacteria
Answers
130,504 + 75,062 = 205,566
205,566 is your answer
A box of cornflakes has a mass of 350g.A new box is brought out which states "contains 15% extra".What is the mass of the new box?
CAN SOMEONE HELP ME PLEASE IAM STUCK
Answers
Out of 340 racers who started the marathon, 302 completed the race, 26 gave up, and 12 were disqualified. What percentage did not complete the marathon?
Answers
Answer:
11.18%
Step-by-step explanation:
Total = 340
Completed = 302
Not completed = 340 - 302 = 38
Not completed% = 38/340*100% = 11.18%
Which graph is generated by this table of values? x –5 –3 –1 4 y 2 4 1 0 On a coordinate plane, points are at (negative 5, 2), (negative 3, 4), (negative 1, 1), and (4, 0). On a coordinate plane, points are at (negative 5, negative 2), (negative 3, negative 4), (negative 1, negative 1), and (4, 0). On a coordinate plane, points are at (0, 4), (1, negative 1), (2, negative 5), and (4, negative 3). On a coordinate plane, points are at (1, negative 1), (3, negative 4), (4, 0), and (5, negative 2).
Answers
Answer:
The answer is A
Step-by-step explanation:
All you must do is find the correct values in the graph.
The graph which is generated by the table of values x -5,-3,-1,4 and y=2,4,1,0 is on coordinate plane points are at (-5,2) ,(-3,4) ,(-1,1) ,(4,0).
What is function?A function is a relationship between two or more variables having each value of x corresponding to y values. Values of x are known as domain and values of y are known as codomain.
How to graph function?We have been given the following table as under:
x y
-5 -3
-3 4
-1 1
4 0
We have to plot the points -5 ,-3,-1,4 on x axis and corresponding-3,4,1,0 on y-axis.
Hence the graph of given table of values is that on coordinate plane points are at (-5,2) (-3,4)(-1,1)(4,0).
Learn more about function at https://brainly.com/question/10439235
#SPJ2
If segment BD is congruent to segment BC, BD=5x-26, BC=2x+1, and AC=43, find AB
Answers
Answer:Thats a tough one
Step-by-step explanation: Do you need this answer urgently?
Please, can you do this step-by-step.... 2 1/3 + 6 3/5
Answers
Answer:
8 14/15
Step-by-step explanation:
Step 1:
2 1/3 + 6 3/5
Step 2:
2 5/15 + 6 9/15
Answer:
8 14/15
Hope This Helps :)
Answer:8 14/15
Step-by-step explanation:
convert to lcd, 2 5/15 6 9/15
add them and you get that
x+6/4 + x-3/5 = 5x-4/8
Answers
Answer:
x = 7/15
Step-by-step explanation:
x + 6/4 + x - 3/5 = 5x - 4/8
x + x - 5x = -4/8 - 6/4 + 3/5
-3x = -2/4 - 6/4 + 3/5
-3x = -8/4 + 3/5
-3x = -2 + 3/5
-3x = -10/5 + 3/5
-3x = -7/5
x = (-7/5)/-3
x = -7/(5*-3)
x = -7/-15
x = 7/15
Check:
7/15 + 6/4 + 7/15 - 3/5 = 5(7/15) - 4/8
14/15 + 6/4 - 3/5 = 35/15 - 2/4
56/60 + 90/60 - 36/60 = 140/60 - 30/60
146/60 - 36/60 = 110/60
Tommy used a straightedge and a compass to construct a square inside circle C, as shown.
Which of the following steps did Tommy take to construct the inscribed square? Select all steps in the construction.
A Construct a perpendicular bisector of the diameter AB.
B. Construct a perpendicular bisector of the diameter DE.
C. Construct a bisector of ADB to find the location of point E.
D. Use the compass to draw a circle centered at point c.
O E Use the compass to draw two arcs of the same radius centered at point C.
OF Use the straightedge to draw diameter AB of the circle.
OG Use the straightedge to draw lines connecting the endpoints of the two diameters.
Answers
Answer:
The correct options are;
A. Construct a perpendicular bisector of the diameter AB
D. Use the compass to draw a circle centered at point C
E. Use the compass to draw two arcs of the same radius centered at point C
F. Use the straightedge to draw diameter AB of the circle
G. Use the straightedge to draw lines connecting the endpoints of the two diameters
Step-by-step explanation:
To draw an inscribed square of a circle, the circle is first constructed. The diameter of the circle is drawn with a straight edge to find the first two vertices of the intended inscribed square. The perpendicular bisector of the diameter is then drawn intersecting the circumference to provide the other two vertices of the square.
The straightedge is then used to draw lines that connect the endpoints of the two diameters to form the inscribed square of the circle.
Suppose f(x) = 2x-1 and g (x) = x + 1/a. Which value(s) of a would make the composite functions commutative? A. 0 B. 2 C. any value of a D. no value of a
Answers
Answer:
2
Step-by-step explanation:
A commutative function means that when you insert one function in space of x in the other function, they will equal x. The equation is f(g(x)) = g(f(x)) = x
So, 2([tex]\frac{x+1}{a}[/tex]) - 1 = [tex]\frac{(2x-1)+1}{a}[/tex]
If you multiply both sides by a, you get 2a([tex]\frac{x+1}{a}[/tex]) - a = (2x-1)+1
Simplify it 2a([tex]\frac{x+1}{a}[/tex]) - a = 2x
Add a to both sides 2a([tex]\frac{x+1}{a}[/tex]) = 2x +a
The two as on the left cancel out 2(x+1)=2x+a
Distribute the 2 2x+2=2x+a
Then subtract 2x from both sides 2 = a
Therefore, a = 2
Hope this helps!
Answer:2
Step-by-step explanation:
Graph equation y=|x-2|-4
Answers
Answer:
Step-by-step explanation:
.8787... as a fraction
Answers
Step-by-step explanation:
Write 0.8787 as
0.8787/1
Multiply both numerator and denominator by 10 for every number after the decimal point
0.8787 × 10000
1 × 10000
=
8787/10000
Reducing the fraction gives
8787/10000