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Neporo4naja [7]
3 years ago
11

Plssss help in need of answers soon

Mathematics
2 answers:
vfiekz [6]3 years ago
5 0
My guess is that you're doing the Law of Cosines? You have everything you need for that except the angle theta, which is the thing you need to find.  It's set up like this: (8)^2 = (10)^2 + (5)^2 -[2(10)(5)cos A]  I used A instead of theta. Doing that math, you have: 64 = 100 + 25 -[ 100 cos A]; 64 = 125 - 100 cos A;
-61 = - 100 cos A; -61 / -100 = cos A; .61 = cos A. Now use your inverse function on your calculator to find cos^-1(.61) and that equals 52.4
telo118 [61]3 years ago
4 0
You have to apply the law of cosine
In a triangle ABC

The square of a side is equal to the sum of the square of the 2 other sides minus twice the cos of the angle opposed to the side AB

AB = 10.  BC = 5 AND AC = 8
Let C the angle facing AB,  B, facing AC  and A facing BC

AB² = BC² + AC² - 2.BC.AC.cos² C. Now plug
10² = 8² + 5² - 2(8)(5).cos C
100 = 64 + 25 - 80 cos C
80cos C = -11;  cos C  =-11/80 = - 0.1375
cos C = - 0.1375 . To find the angle C, let's use the inverse function
coc C = -0.1375 and cos⁻¹ (-0.1375) = So C = 98°
Follow the same procedure for the other angle. And when you have got 2 angles, you will find the 3rd one
If you need further explanation, I will be on line for about 15 min max

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Tom planted 1/2 of an 8-ft by 9-ft garden with vegetables. He planted tomatoes in 1/3 of the vegetable garden and corn in the re
ser-zykov [4K]

Answer:

Corn was planted in 24 sq.ft. of the vegetable garden.

Step-by-step explanation:

Length of garden = 9 ft

width of garden = 8 ft

Hence we will first find the total area of garden.

Total area of garden = length × width = 8 \times 9 = 72ft^2

He planted 1/2 of the garden with vegetables.

Hence.

Area of Vegetables garden = \frac{1}{2}\times \textrm{Total Area of Garden} = \frac{1}{2}\times 72 = 36ft^2

He planted tomatoes in 1/3 of the vegetable garden and corn in the rest

Area in which tomatoes was planted = \frac{1}{3}\times \textrm{Area of Vegetables Garden} = \frac{1}{3}\times 36 = 12ft^2

Hence Area in which corn were planted = Area of Vegetables garden - Area in which tomatoes was planted = 36ft^2-12ft^2=24ft^2

Hence Area of vegetable garden in which corn was planted is 24 sq.ft.

7 0
3 years ago
What is the partial product of 4.6 x 3.5
PIT_PIT [208]
The partial product of 4.6×3.5 is 16.1
7 0
2 years ago
Read 2 more answers
Describe the difference between slope and y-intercept​
Zinaida [17]

Answer:

The difference between slope and y-intercept, is y-intercept is a specific point. Y-intercept is when the line crosses the y-axis, or when x = 0. Slope is how much the y value changes when the x has changed +1, or -1, if that makes sense.

I was gonna do an example, but I got lazy, hehe.

5 0
3 years ago
Please please help me with question 6,, I can’t figure it out.
Norma-Jean [14]

Answer:

The answer is D.) 27

Step-by-step explanation:

This problem forms a right triangle and with the 90ft wire being the hypotenuse, you subtract 63 from 90 and you get 27.

Hope I helped! :)

7 0
3 years ago
If a,b, and c are prime numbers, do (a+b)(a+b) and cc have a common factor that is greater than 1?
Tanya [424]

Answer:

1. Information is not sufficient

2. Information is not sufficient

Step-by-step explanation:

Question Modified

If a,b, and c are prime numbers, do (a+b) and c have a common factor that is greater than 1?

(1) a,b, and c are all different prime numbers

(2) c≠2

Explanation

1. Let's assume values of 1,3 and 5 to a, b, and c respectively

a + b = 1+3 = 4

4 and 5 do not have any common factor aside 1

Let's assume values of 1,3 and 2 to a,b and c respectively

a + b = 1+3 = 4

4 and 2 have a common factor of 2

So, the available information is not sufficient

2.

Let's assume values of 2,7 and 3 to a b and c response

a + b = 2 + 7 = 9

9 and 3 have a common factor of 3

Also, let's assume values of 2,7 and 5 to a, b and c

a + b = 2 + 7 = 9

9 and 5 do not have a common factor

So, the available information is also not sufficient to answer the question.

3 0
3 years ago
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