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1 year ago

Help please this makes no sense

Mathematics

1 answer:

Degger [83]1 year ago

5 0

Answer:

ST = 7.1 in

Step-by-step explanation:

we can use SOH-CAH-TOA because we've got a right triangle

side ST would be 'adjacent'

side TU would be the 'hypotenuse'

so we use Cosine because that's used when you're dealing with adjacent and hypotenuse:

cos 42° = ST/9.5

ST = cos 42° × 9.5

ST = 7.1

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In circle O, BC=14 and DC=25. What is the length of diameter BA? -58.6 -12.2 -44.6 -30.6

Savatey [412]

The picture in the attached figure

we know that
If a tangent segment and a secant segment are drawn to a circle from an exterior point, then the square of the measure of the tangent segment is equal to the product of the measures of the secant segment and its external secant segment
so
DC²=BC*CA-----> CA=DC²/BC
DC=25
BC=14
CA=25²/14-----> CA=44.64
CA=BC+BA----> BA=CA-BC----> BA=44.64-14----> BA=30.64

BA is the diameter
hence
the length of diameter BA is 30.64----> round to the nearest tenth---> 30.6

the answer is
the length of diameter BA is 30.6

7 0

3 years ago

Solve:4x+3y=20;4x+2y=10 by matrix method

laila [671]

Answer:

i don't know sorry . and study well to make your future good

8 0

3 years ago

Please help! it’s urgent

ycow [4]

Step-by-step explanation:

${9}^{ \frac{3}{2} } \times {27}^{ \frac{1}{2} } = {(3)}^{ \frac{3}{2} \times 2 } \times {(3)}^{ \frac{1}{2} \times 3} \\ = {3}^{3} \times {3}^{ \frac{3}{2} } \\ = {3}^{3 + \frac{3}{2} } \\ = {3}^{4\frac{1}{2} } \\ = {3}^{ \frac{9}{2} }$

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2 years ago

Which face has symmetry?

Setler79 [48]

Answer:

D last one

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Jason ran around his house 3 times which was a total of 274.5 feet. If the length of his house is 30.5 feet, what is the width o

creativ13 [48]

Answer:

Width of the house is 15.25 feet.

Step-by-step explanation:

Jason ran around his house = 3 times

In this run he covered total distance = 274.5 feet

Perimeter of the house = 2(length + width)

= 2(30.5 + width)

Perimeter of the house is the distance covered by Jason in one round.

So, distance covered in 3 rounds = 3[2(30.5 + width)]

274.5 = 6(30.5 + width)

45.75 = 30.5 + width

width = 45.75 - 30.5

width = 15.25 feet

Therefore, width of the house is 15.25 feet.

3 0

3 years ago