Mathematics College

An artist wants to scale down the surface area of an image by 20%. The image initially has a length of 22 ft. and a width of 22 ft. What is the width of the scaled down image? Round to the nearest hundredth.

17.08 ft.
17.89 ft.
18.78 ft.
19.68 ft.

Answers

Answer 1

Answer:

17.89 ft if I'm correct.....

Answer 2

Answer:

D. 19.68 ft

Step-by-step explanation:

Area is the product of two dimensions.

If the scale factor is k, the ratio of areas is k².

20% down means 0.8 times:

k² = 0.8k = √0.8 = 0.8944

Now the width of the image is:

22*0.8944 = 19.68 ft (rounded)

Correct choice is D

Related Questions

Factorise as fully as possible:

[tex]8x^{2} -4x[/tex]


Please help me! Got a big test tomorrow and I really want to make sure I have every skill under my belt.

Answers

Answer:

[tex]4x(2x−1)[/tex]

Step-by-step explanation:

[tex] {8x}^{2} - 4x[/tex]

[tex]4x(2x) - 4x[/tex]

[tex]4x(2x)+4x(−1)[/tex]

[tex]4x(2x−1)[/tex]

Hope it is helpful....

Find the value of y in the equation. 3/y-2=8

Answers

Answer: 19/8 or 2 and 3/8

Step-by-step explanation:

According to the Centers for Disease control and prevention, 20.8 of high school students currently use electronic cigarettes. A high school counselor is concerned that the use of e-cigs at her school is higher.
(a) Determine the null and alternative hypotheses.
(b) If the sample data indicate that the null hypothesis should not be rejected, state the conclusion of the school counselor.
(c) Suppose, in fact, that the proportion of students at the counselor's high school who use electronic cigarettes is 0.034. Was a Type I or Type II error committed?

Answers

Answer:

H0 : p = 0.028

H1: p > 0.028

We conclude that there is not enough evidence to support the school counselor's claim they the use of electronic cigarettes in high school is higher Than 2.8%

Type 11 error

Step-by-step explanation:

H0 : p = 0.028

H1: p > 0.028

If null should not be rejected then;

We conclude that there is not enough evidence to support the school counselor's claim they the use of electronic cigarettes in high school is higher Than 2.8%

3.)

If the actual proportion is 0.034, which means 3.4%, this means it is actually higher. For failing to reject a false Null, then a type 11 error has been committed

hiii please help

a- each person who takes a drink from the cooler drinks approximately ately 24 oz of water

b- the water cooler started off with 648 oz of drink in it

c- there are 24 people who take a drink from the cooler

d- each of the 24 who take a drinks from the cooler drinks 1oz

Answers

i think the answer is C

composite figure help omg

Answers

Answer:

188 sq m

Step-by-step explanation:

for the top square its just 6 x 6 which is 36

then for the bottom you add 6 + 13 for the width (which is 19) and we've already been given 8 for the height so then you multiply 19 x 8 and get 152

you then add 152 and 36 to get 188 (and the unit is sq m or m^2)

I need awnser asap im giving brainlist in this one

8/1 x 8

Answers

Answer:

64

hope this helps

have a good day :)

Step-by-step explanation:

64
Have a great day !

Sonya has a collection of gold and silver coins.
65% of her collection consists of gold coins.
70 of her coins are silver.
What is the total number of coins in Sonya's collection?
Enter your answer in the space provided.
HELP PLEASE

Answers

Answer:

10.5

Step-by-step explanation:

65% of 70 is 45.5

So gold is 45.5 and silver is 54.5

so but45.5 + 54.5 = 100% but divide by 2

which is 50% but now we find 10% and 5%

10% = 7

5% = 3.5

now add 7 and 3.5 together

7+3.5 = 10.5

Find the equation of the linear relationship.

Answers

Answer:

y = -3x + 150

Step-by-step explanation:

2 points on the graph:

(30, 60) and (40, 30)

Slope:

m=(y2-y1)/(x2-x1)

m=(30 - 60)/(40 - 30)

m= (-30)/10

m= -3

Slope-intercept:

y - y1 = m(x - x1)

y - 60 = -3(x - 30)

y - 60 = -3x + 90

y = -3x + 150

Find the value of x.
71
O
(16x-2)
x=

Answers

Answer:

x = 9

Step-by-step explanation:

m<K = 71°

arc JL = 16x - 2

m<k = ½(arc JL) => inscribed angles theorem

Substitute

71 = ½(16x - 2)

Multiply both sides by 2

71*2 = 16x - 2

142 = 16x - 2

Add 2 to both sides

142 + 2 = 16x - 2 + 2

144 = 16x

Divide both sides by 16

144/16 = 16x/16

9 = x

x = 9

Which congruence statement correctly compares the two triangles shown?
A) AABD - ABDC
B) AABD - ACDB
C) ADBA - ADBC
OD) AADB - ABCD

Answers

Answer:

B) ABD=CDB

Step-by-step explanation:

Answer: B

Explanation: Because i am correct bestie

Estimate the sum of the decimals below by rounding to the nearest whole number.


6.802
6 1844
+ 6.318​

Answers

Answer:

19

Step-by-step explanation:

6.802 = 7

6.1844 = 6

6.318 = 6

7 + 6 + 6 = 19

I hope this helps!

Solve the proportion: 144/a = 9/4
a=?
​

Answers

Step-by-step explanation:

eieueskhdbdjsikskskskjswhwjw

What is the volume of the triangle prism? ( HELP PLEASE )

Answers

Answer:

270 km³

Step-by-step explanation:

the volume = ½×9×6×10 = 270 km³

Write the log equation as an exponential equation. You do not need to solve for x.
log, (2) = 2x - 1

Answers

Answer:

2 = 10^(2x-1)

Step-by-step explanation:

Imma assume the "," is 10,

So basically, it's just 2 = 10^(2x-1) I think, sorry if I'm wrong tho

Please answer this question for me

Answers

I think the answer is par

how do you solve the problem 2p = 60 ​

Answers

you have to separate the 2 and p so divide 60 by 2 which will leave p=30 and now if you plug it in you see 2 times 30 equals 60 :)

Plz help me well mark brainliest if correct...?????

Answers

Answer:

Option B, Shows change over time

Step-by-step explanation:

Since the slope of a line graph could be found out by the formula;

Change y / Change in x...

This represents change over time

Hope this helps!

Right triangles 1, 2,
and 3 are given with all their angle measures and approximate side lengths.
35
8.2
120
10
9.4
10
2
70
55
5.7
3.4
6.4
7.7
3
50
40
10

Answers

Answer:

2.2

Step-by-step explanation:

I did it on khan

Right triangles have the measure of one of its angles to be 90 degrees

The ratio WY/WX is 0.36

From the triangle (see attachment), one of the angles of triangle WXY is 70 degrees.

This means that, the triangle is similar to triangle 1.

Similar triangles may or may not have congruent side lengthsSimilar triangles have equivalent ratios

So, by comparing the side lengths, we have:

[tex]WY = 3.4[/tex]

[tex]WX = 9.4[/tex]

The ratio is then calculated as:

[tex]\frac{WY}{WX}= \frac{3.4}{9.4}[/tex]

[tex]\frac{WY}{WX}= 0.36[/tex]

Hence, the ratio WY/WX is 0.36

Read more about similar triangles at:

https://brainly.com/question/14285697

I’m back again :( Please anybody help me

Answers

Welcome back....♡

Surface area = 2( 4 × 2 ) + ( 3 × 4 )

+ 2( 4 × 4 ) + 3( 10 × 4 )

+ 3( 4 × 7 )

Surface area = 16 + 12 + 32 + 120 + 84

Surface area = 264 in^2

Jeff and Eric roommates and enjoy talking about sports. They mainly discuss their favorite professional soccer teams. Jeff enjoys European soccer whereas Eric prefers American teams. Outside soccer they do not discuss much. Their lack of range of talking to it fall into which category?​

Answers

Answer:

0°

EXPLANATION:

In each figure below find m∠1 and m∠2, if a||b. Show your work with statements.

====================================

If you have any questions feel free to ask me^^

Have a nice and great day!

Cayler

#PilipinasAngBayanKo

Answer:

0°

Sana Maka help ako tnx

Hello I need this quickly pls

Answers

Answer:

Area = x² + 10x + 21

Step-by-step explanation:

Area = L * W

Length = (x + 7)

Width = (x + 3)

=> Area = (x + 7) * (x + 3)

=> Area = x² + 3x + 7x + 21

Combining like terms would result in;

=> Area = x² + 10x + 21

Hope this helps!

the answer is 60 haha

What does burning fossil fuels release into the air?

Answers

When fossil fuels are burned, they release nitrogen oxides into the atmosphere, which donate to the formation of smog and acid rain. Major sources of nitrogen oxide emissions include: Cars and trucks. Coal-fired power plants.

Step-by-step explanation:

Answer:

carbon dioxide

Step-by-step explanation:

took the test

What is the value x² + 3y / xy, if x=4 and y=2?

Answers

Answer:

Step-by-step explanation:

x^2+3y/xy

4^2+3*2/4*2

16+6/8

22/8

yard
April buys 14 yards of ribbon to make bows for her dance team. If she uses 11
of ribbon for the bows, how much ribbon, in yards, does April have now?
You may use the fraction model to help you.

Answers

Answer:

31

Step-by-step explanation:

PLEASE HELP IM BEING TIMES

Answers

Answer:

Part A.  linear

Part B. you would shade the solutions (2,0) (3,2) (4,4) (5,6) (6,8)... right side

Step-by-step explanation:

Hope this helps

Solve the Exponential Equation:
[tex]5 { }^{66} = {3}^{42} [/tex]
​

Answers

Answer:
.........

Work:

Find the volume of the cone. Round your answer to the nearest hundredth.

Answers

Answer:

I believe the answer is 1.36

(3)^4 times (3)^3 simplified version using exponents

Answers

Answer:

I'm pretty sure your answer is [tex]3^1^1[/tex]

Step-by-step explanation:

in. in What is the area of this trapezoid? b2 = 5 in. h = 4 in. 3 in. 2 in. b1 = 10 in.​

Answers

Answer:

30 square inches

Step-by-step explanation:

The equation for the area of a trapezoid is: (b1 + b2) x h) / 2

(10 + 5) x 4) /2

15 x 4 = 60

60/2 = 30

30 square inches

a. Find the slope of the line going through the points (-7, 7) and (3.-5).​

Answers

Answer:

-1.2

Step-by-step explanation:

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