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sergij07 [2.7K]
3 years ago
9

MrsEHolt Help [GEOMETRY!] [EASY PEASY LEMON SQUEEZY]

Mathematics
2 answers:
Afina-wow [57]3 years ago
4 0

AC is the adjacent leg to C and BC is the hypotenuse.  So we're talking about the cosine:

\cos C = \dfrac{AC}{BC}

For part 2, the co in cosine means "complementary" so cos x equals the sine of the complementary angle, that's going to be

\sin y
fgiga [73]3 years ago
4 0

The other person is right so I am not going to try and act like I got the answer before her or copied her

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Find the area of this circle. Use 3 for 7.<br> A = ar2<br> 7 cm<br> [?] cm2
Bond [772]

Answer:

147

Step-by-step explanation:

Since it says need to use 3 to represent pi

well show the formula.

The radius is 7 so we square it, and do the formula.

A=3r²

A=3*49

A=147

7 0
3 years ago
The hypotenuse of a 45°-45°-90° triangle measures 128 cm. A right triangle is shown. The length of the hypotenuse is 128 centime
Aleks [24]

Answer:

64√2 or 64 StartRoot 2 EndRoot

Step-by-step explanation:

A 45-45-90 traingle is a special traingle.  Let's say one of the leg of the triangle is x. The other one is also x because of the isosocles triangle theorem.  Therefore, using the pytagorean theorem, you find that x^2+x^2=c^2.  2(x)^2=c^2.  You then square root both sides and get c= x√2.  

Therefore, the two legs are x and the hypotenuse is x√2.  x√2=128 because the question says that the hypotenuse is 128.  Solve for x by dividing both sides by √2.  X=128/√2.  You rationalize it by multiplying the numberator and denominator of the fraction by √2.  √2*√2= 2.

X=(128√2)/2= 64√2 cm.

Since X is the leg, the answer would be 64√2

3 0
2 years ago
Read 2 more answers
in a small school, there are 60 boys and 80 girls. write down the ratio of the number of boys to the number of girls. give your
tester [92]
60:80
Simplest form = 3:4

3 0
3 years ago
204, 200,196,... find the 31st term
rewona [7]

Answer:

31st term = 84

Step-by-step explanation:

Given:

204, 200,196,...

Find:

31st term

Computation:

204, 200,196,...

First term a = 204

Difference d = a3 - a2

Difference d = 196 - 200

Difference d = -4

An = a + (n-1)d

A31 = 204 + (31-1)(-4)

A31 = 204 - 120

A31 = 84

6 0
3 years ago
Read 2 more answers
2. A random sample of adults are asked about their preferences for a first dinner date with
Ira Lisetskai [31]

All the attatchments include the directions below:

Prepare a two-way table as shown below.

Enter the number 50 in the two-way table

Prepare a column total and enter 68 for the total number of people who split the check.

The total number of people who do not eat desert are 56, and the total number of people who took the survey are 122. Enter both values.

The remaining values can be found out as shown below.

6 0
3 years ago
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