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3 years ago

I NEED HELP WITH THEM ALL PLEASE

Mathematics

1 answer:

PilotLPTM [1.2K]3 years ago

8 0

Answer:

17. 11/20

18. 75cm^2

19. 45

20. a. 93 b. 93 c. 90,94

Step-by-step explanation:

I suggest putting more points for it next time that's 4 questions and saying please makes you sound desperate.

Hope this helped! Have a nice day!

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Solve: |2(x-5)|+11=17

Otrada [13]

Answer:

Step 1

Use the distributive property to multiply 22 by x-5x−5.

|2x-10|+11=17∣2x−10∣+11=17

Hint

Expand using distributive property.

Step 2

Subtract 1111 from both sides.

|2x-10|=17-11∣2x−10∣=17−11

Step 3

Subtract 1111 from 1717 to get 66.

|2x-10|=6∣2x−10∣=6

Hint

Subtract one term from another.

Step 4

Use the definition of absolute value.

2x-10=62x−10=6 2x-10=-62x−10=−6

Step 5

Add 1010 to both sides of the equation.

2x=162x=16 2x=42x=4

Step 6

Divide both sides by 22.

x=8x=8 x=2x=2

Solution

x=2x=2

x=8x=8

Step-by-step explanation:

pa brainliest

6 0

2 years ago

I need help :(( please please ease<br><br><br>triangle area ?

kvasek [131]

Answer:

$\frac{25\sqrt{3}}{2}$

Step-by-step explanation:

The area of a triangle is given by $A=\frac{1}{2}bh$ where $b$ is the base of the triangle and $h$ is the height of the triangle. In a right triangle, the two legs will represent the base and height, both interchangeable.

In a 30-60-90 triangle, the sides are in the proportion $x:x\sqrt{3}:2x$ , where $2x$ is the hypotenuse of the triangle and $x$ is the side opposite to the 30 degree angle. Since the hypotenuse of this triangle is given as 10, the leg opposite to the 30 degree angle is equal to $10\div 2=5$ and the leg adjacent to the 30 degree angle is equal to $5\sqrt{3}$ .

Thus, the area of this triangle is equal to:

$A=\frac{1}{2}\cdot 5\cdot 5\sqrt{3}=\boxed{\frac{25\sqrt{3}}{2}}$

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3 years ago

The population of a colony of mosquitoes obeys the law of uninhibited growth. If there are 1000 mosquitoes initially and there a

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Answer:

There are 2,500 misquitos after 3 days and it takes 158 days to reach 80,000 mosquitos.

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3 years ago

Solve the inequality.

Mars2501 [29]

To solve an inequality, get the variable you're solving for on one side of the inequality and everything else on the opposite side.

$\frac{2}{5} \geq x - \frac{4}{5}$

You get the x variable on it's own by undoing the operations done to it.

For example, if x is being multiplied by 5, you undo the multiplication operation by using the inverse of multiplication. Which is division.

We need to add $\frac{4}{5}$ to both sides of the inequality to undo the subtraction operation done to x.

$\frac{2}{5} + \frac{4}{5} \geq x - \frac{4}{5} + \frac{4}{5} \\ \\ \frac{6}{5} \geq x$

Convert the improper fraction into a mixed number.

$\frac{6}{5} = 1 \frac{1}{5}$

So, D 1 1/5 ≥ x is the answer.

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6. Mr. Walthour is building a storage shed in a conical shape. The base of the shed is 4 meters in diameter and the height of th

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I think it helps you..............

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