2 years ago

20 POINTS!!!

Mathematics

1 answer:

kifflom [539]2 years ago

7 0

I want to say the answer is C

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One earns $11 per hour and works at most 30 hours per week identify the independent and dependent quantity in the situation and

morpeh [17]

30 hours = 11x30=330$.

8 0

2 years ago

7.8+ (x-18)=31 Please Help Asap ty

lidiya [134]

Answer:

x=41.2

Step-by-step explanation:

hope this helps

8 0

2 years ago

Read 2 more answers

Each of 50 guests at a banquet will be served an 8-ounce portion of prime rib. If prime rib has a yield percentage of 60%, how m

fiasKO [112]

Answer:

41.6 or 42

Step-by-step explanation:

AP = EP / YP 50 x 8 = 400 / .60 = 666.66 / 16 = 41.6 or 42

4 0

2 years ago

an isosceles triangle has congruent sides of 20cm. the base is 10cm. find the height of the triangle.

dolphi86 [110]

Answer:

$\large\boxed{A_\triangle=25\sqrt{15}\ cm^2}$

Step-by-step explanation:

Look at the picture.

The formula of an area of a triangle:

$A_\triangle=\dfrac{bh}{2}$

b - base

h - height

We need a length of a height.

Use the Pythagorean theorem:

$leg^2+leg^2=hypotenuse^2$

We have:

$leg=5,\ leg=h,\ hypotenuse=20$

Substitute:

$5^2+h^2=20^2$

$25+h^2=400$ subtract 25 from both sides

$h^2=375\to h=\sqrt{375}\\\\h=\sqrt{(25)(15)}\\\\h=\sqrt{25}\cdot\sqrt{15}\\\\h=5\sqrt{15}\ cm$

Calculate the area:

$A_\triangle=\dfrac{(10)(5\sqrt{15})}{2}=\dfrac{50\sqrt{15}}{2}=25\sqrt{15}\ cm^2$

8 0

2 years ago

I need the answer and work

ad-work [718]

A) 2x +3

Plug in the x

2(4.1) + 3

8.2+ 3= 11.2

A is 11.2

B) 16-5y

Plug in the y

16 - 5(2.3)

16- 11.5= 4.5

B is 4.5

C) x+y

Plug in x and y

4.1 + 2.3= 6.4

C is 6.4

7 0

2 years ago