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3 years ago

I PROMISE BRAINLIST PLZZ HELLLPPPP ASAPPPP!!!!!!!!!!!!!!!!!

Mathematics

1 answer:

Black_prince [1.1K]3 years ago

6 0

I think the answer is a. -3x^2-x-5

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The price of a liter of milk increased 10% compared with last year . If the new price is $1.21 per liter , what was last years p

Alex Ar [27]

Answer:

$1.1

Step-by-step explanation:

First take if 110% is equals to $1.21 what about 100%

1.21×100=121÷110= $1.1

5 0

3 years ago

I need help with graphing

stiks02 [169]

Are you finding the x-intercept

7 0

2 years ago

(x-3)^(2)-(x+1)^(2) Remove the brackets and simplify

Alex

Answer:

The correct answer to your question is -8

8 0

2 years ago

Read 2 more answers

A radio tower is located 300 feet from a building. From a window in the building, a person determines that the angle of elevatio

DerKrebs [107]

Answer:

The tower is approximately 381 feet high.

Step-by-step explanation:

Refer to the sketch attached. The height of the tower can be found in two parts:

The part above the window, and
The part under the window.

Each part can be seen as a leg of a right triangle. The other leg is the distance between the building and the tower and is 300-feet long. The angle opposite to the leg is given.

The length of the upper part is $300\cdot \sin{42^{\circ}}$ feet.
The length of the lower part is $300\cdot \sin{37^{\circ}}$ .

The height of the tower is the sum of the two parts:

$300\cdot \sin{42^{\circ}} + 300\cdot \sin{37^{\circ}} = 300(\sin{42^{\circ}}+\sin{37^{\circ}}) = 381$ feet.

4 0

3 years ago

I need help how to do this. Please help

earnstyle [38]

The best method would be to cross-multiply. Multiply the figure on the top left with the bottom right. Then set it equal to the multiplication of the bottom left with the top right.
This would turn into:
-1(x-1)=2(x+3) Then distribute the multiplication through the parentheses.
-x+1=2x+6 Next, get all the variables on one side, and the integers on another.
2x+x=1-6
3x= -5
x= -5/3

8 0

3 years ago