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3 years ago

5

What does -2+2x=-x+2+x equal

1 answer:

larisa86 [58]3 years ago

7 0

The answer is x equals 2.

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n 2008, the Queen Sesheshet Pyramid was discovered in Egypt. Archeologists determined that the original height of this right squ

Solnce55 [7]

You need to make a draw of the problem to understand what to do.
The height of the pyramid, and half the original base side length make a rectangle triangle, whose hypothenuse is the height of the lateral area of one of the pyramids faces, so we have. So we use Pythagoras:
hyp^2 = 11^2 + 14^2 = 317
hyp = 17.8 m
that is the height of the lateral area triangle

Now to find the area of the lateral area triangle, we have:
a = base*height/2 = 22*17.8/2
a = 195.8 m^2
that is the lateral area of the pyramid, 196 m^2

8 0

2 years ago

5 apples and 6 bananas cost $9.55. 8 apples and 10 bananas cost $15.60. What is the cost of one apple?

uranmaximum [27]

Answer:

$5.75

Step-by-step explanation:

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2 years ago

Suppose a car has 4 gallons in its tank and the tank holds 14.5 gallons. How long does it take to fill the tank?

SashulF [63]

Answer: 1.75 minutes

Step-by-step explanation:

6 gallons per minute.

14.5-4=10.5

10.5/6=1.75 minutes

3 0

1 year ago

Solve for x ! problems attached please help!!

vampirchik [111]

Answer:

7. $x\le 8$

8. $x\le 1.7$

9. $-0.2\le x\le 2$

10. $3< x\le 4$

Step-by-step explanation:

7. Solve for x:

$4x+7-x\le 31$

Separate variable and numbers into different sides of inequality:

$4x-x\le 31-7\\ \\3x\le 24$

Divide the inequality by 3:

$x\le 8$

8. Solve for x:

$2(x-3)+8x\le 11$

Eliminate the brackets:

$2x-6+8x\le 11$

Separate variable and numbers into different sides of inequality:

$2x+8x\le 11+6\\ \\10x\le 17$

Divide the inequality by 10:

$x\le 1.7$

9. Solve for x:

$-7x\le 3x+2\le 8$

Solve two inequalities $-7x\le 3x+2$ and $3x+2\le 8$ separately:

$-7x\le 3x+2\\ \\3x+2\ge -7x\\ \\3x+7x\ge -2\\ \\10x\ge -2\\ \\x\ge -0.2$

and

$3x+2\le 8\\ \\3x\le 8-2\\ \\3x\le 6\\ \\x\le 2$

So,

$-0.2\le x\le 2$

10. Solve for x:

$8$

Add 1:

$8+1$

Divide by 3:

$3< x\le 4$

6 0

2 years ago

Read 2 more answers

Evaluate the function <br><br> f(x)=−4x^2+6x−4 <br><br> Find f(5)

Tamiku [17]

Hey there!

1. How to find f(5)?

To find f(5) - simply substitute x = 5 in the function. f(5) means the value of f(x) at x = 5.

2. Substitution and Evaluate

$\large{f(5) = - 4( {5})^{2} + 6(5) - 4}$

Remember to follow the PEMDAS/BODMAS rules! Exponent comes before multiplication.

$\large{f(5) = - 4(25) + 30 - 4} \\ \large{f(5) = - 100 + 30 - 4} \\ \large{f(5) = - 74}$

3. Final Answer

f(5) = -74

If you have any questions regarding the question or my answer, feel free to ask!

8 0

3 years ago