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Nataly_w [17]
3 years ago
12

Use △DEF, shown below, to answer the question that follows: Triangle DEF where angle E is a right angle. DE measures x. DF measu

res 55. Angle D measures 49 degrees. What is the value of x rounded to the nearest hundredth? Type the numeric answer only in the box below.
Mathematics
2 answers:
Hatshy [7]3 years ago
7 0

so is it 36.07 or 36.08

Nonamiya [84]3 years ago
4 0

Answer:

36.08

Step-by-step explanation:

Side DE is the side adjacent to ∠D.  Side DF is the hypotenuse of the triangle.  Adjacent/hypotenuse is the ratio for cosine; this gives us the equation

\cos{49}=\frac{x}{55}

To solve this, multiply both sides by 55:

55\times \cos{49}=\frac{x}{55}\times 55\\\\55\cos{49}=x\\\\36.07=x

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Please help I want to pass this semester
dusya [7]

Answer:

I think both angles are 95 degrees for question 14

Step-by-step explanation:

Because if you split the shape in half they make two triangles which is always the sum of 180 so all you do is add the two know angles together to get 128. Once you have that you would solve for your missing angles by subtracting 180 from 128 which gives you 95 degrees.

85+ m<b+ 43= 180 degrees goes for angle d to.

83+43=128

180-128=95

Now check work by plug in your answer.

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making this a true statement.

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3 years ago
(7x2 + 4x + 10) - (3x2 + 2x - 6)
Vedmedyk [2.9K]

Answer:

4x^2 +2x +16

Step-by-step explanation:

7x2 + 4x + 10) - (3x2 + 2x - 6)

Distribute the minus sign

7x2 + 4x + 10) - 3x2 - 2x + 6

Combine like terms

7x2 + 4x + 10)

- 3x2 - 2x + 6

-------------------------

4x^2 +2x +16

6 0
3 years ago
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100 points! PLEASE ANSWER!
german

Answer:

x + y = 36 (1)

7x + 4y = 216 (2)

Step-by-step explanation:

Quanrity of Holiday blend = 36 pounds

Cost per pound of the blend = $6.00

Cost of chocolate chips = $7.00 per pound

Cost of pretzels = $4.00 per pound

Let

Pounds of chocolate chips = x

Pounds of pretzels = y

x + y = 36 (1)

7x + 4y = 36 × $6.00

7x + 4y = 216 (2)

The system of equation is

x + y = 36 (1)

7x + 4y = 216 (2)

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3 years ago
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Step-by-step explanation:

_______________________

x 0 1 6 4.5 10.5

_______________________

y 0 2 12 9 21

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3 years ago
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