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3 years ago

Triangle ABC is similar to triangle DEF.

Mathematics

1 answer:

amid [387]3 years ago

8 0

Answer:

1.5

Step-by-step explanation:

12 / 8 = 1.5

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What are the input variable and the output variable? number of rowers in a rowboat and the speed of the rowboat?

Digiron [165]

More rowers in a rowboat will increase the speed of a rowboat.
Answer:
The input variable: number of rowers.
The output variable: the speed of a rowboat.

4 0

3 years ago

Read 2 more answers

How do you solve 7+3m=-29,-5x+7=27,31=4-9y,-52-3u=8,and 6-x=15. I know I'm asking for a lot.

lakkis [162]

Isolate the variable by putting numbers over the equal sign and multiplying/dividing. I'll do them for you
A. 7+3m=-29
3m=-29-7
3m=-36
M=-12
B. -5x+7=26
-5x=26-7
-5x=19
X=-3.8
C. 31=4-9y
31-4=-9y
27=-9y
-3=y
D. -52-3u=8
-3u=8+52
-3u=60
U=-20
E. 6-x=15
-x=15-6
-1x=9
X=-9
Hope this helps

4 0

3 years ago

How much TV do college students watch? A survey of 361 students recorded the number of hours of television they watched per week

Darina [25.2K]

Answer: 90% confidence interval would be (6.022,6.986).

Step-by-step explanation:

Since we have given that

Number of students = 361

Sample mean = 6.504

Sample standard deviation = 5.584

Standard error of the mean = 0.294

At 90% confidence level,

So, α = 0.01

So, z = 1.64

Margin of error is given by

$z\times \text{Standard error}\\\\=1.64\times 0.294\\\\=0.48216$

So, Lower limit would be

$\bar{x}-0.482\\\\=6.504-0.482\\\\=6.022$

Upper limit would be

$\bar{x}+0.482\\\\=6.504+0.482\\\\=6.986$

So, 90% confidence interval would be (6.022,6.986).

3 0

3 years ago

The surface area of sphere T is 452.16 units squared. The surface area of sphere X is 1808.64 units squared. how many times larg

Art [367]

Answer:

the radius of sphere X is 2 times larger than the radius of sphere T

Step-by-step explanation:

Given

Surface area of sphere, T =452.16

Surface area of sphere, X= 1808.64

how many times larger is the radius of sphere X than the radius of sphere T?

Finding radius of both spheres:

Surface area of sphere is given as

A=4πr^2

Now putting value of Ta=452.16 in above formula

452.16=4πrt^2

rt^2=452.16/4π

rt^2=35.98

Taking square root on both sides

rt=5.99

Now putting value of Xa=1808.64 in above formula

1808.64=4πrx^2

rx^2=1808.64/4π

rx^2=143.92

Taking square root on both sides

rx=11.99

Comparing radius of sphere X and the radius of sphere T

rx/rt=11.99/5.99

= 2.00

rx=2(rt)

Hence the radius of sphere X is 2 times larger than the radius of sphere T!

3 0

3 years ago

Read 2 more answers

2/3 + n + 6 = 3/4<br>what is n with an explanation

Talja [164]

Answer: -6

Step-by-step explanation:

2/3 + n + 6 = 3/4

-2/3 -2/3

n + 6 = 1/12

-6 -6

n = - 6

5 0

3 years ago