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2 years ago

Estimate the range of the product 43 x 77. Enter a hyphen (-) between the two numbers. (I will give brainliest if correct!!)

Mathematics

1 answer:

nignag [31]2 years ago

7 0

Answer:

2800 - 4000

Step-by-step explanation:

40 × 70 = 2800

50 × 80 = 4000

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A scuba diver starts at 79.5 meters below the surface and descends until he reaches 108.3 meters below sea level. How many meter

nata0808 [166]

Answer:

28.8

Step-by-step explanation:

You are looking for the number between 108.3 and 79.5, so you have to do this 108.3-79.5

8 0

2 years ago

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In the matrix shown, which element is A1,2?

anyanavicka [17]

Answer:

B. 2

Step-by-step explanation:

a1,1=1

a1,2=2

a1,3=3

a2,1=4

a2,2=5

a2,3=6

a3,1=7

a3,2=8

a3,3=9

8 0

2 years ago

Solve for x, given the equation Square root of x plus 9 − 4 = 1.

finlep [7]

Remember that an extraneous solution of an equation is a solution that emerges from the algebraic process of solving the equation but is not a valid solution of the equation.

First, we are going to solve our equation algebraically:

Step 1 simplify the equation:

$\sqrt{x} +9-4=1$

$\sqrt{x}+ 5=1$

Step 2 subtract 5 from both sides of the equation:

$\sqrt{x} +5-5=1-5$

$\sqrt{x} =-4$

Step 3 square both sides of the equation:

$\sqrt{x} ^2=(-4)^2$

$x=16$

Next, we are going to replace our solution in our original equation and check if it is a valid solution:

$\sqrt{x} +9-4=1$

$\sqrt{16} +5=1$

$4+5=1$

$9\neq 1$

Since 9 is not equal to 1, $x=16$ is not valid solution of the equation; therefor it is an extraneous solution.

We can conclude that the correct answer is: x = 16, solution is extraneous

8 0

2 years ago

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Moira borrowed $4,500 from her grandfather to pay for her first year of college. Three years later, she repaid the $4,500 along

Nataly [62]

Answer: 1.8%

Step-by-step explanation:

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2 years ago

Triangles A B C and X Y Z are shown. Which would prove that ΔABC ~ ΔXYZ? Select two options. StartFraction B A Over Y X = StartF

sergejj [24]

Answer: Answer is 3

BC 6

------ = ------

XY 3

Step-by-step explanation:

The statements below can be used to prove that the triangles are similar.

On a coordinate plane, right triangles A B C and X Y Z are shown. Y Z is 3 units long and B C is 6 units long.

A B Over X Y = 4 Over 2

A C Over X Z = 52 Over 13

△ABC ~ △XYZ by the SSS similarity theorem.

Which mathematical statement is missing?

1. Y Z Over B C = 6 Over 3

2. ∠B ≅ ∠Y

3. B C Over Y Z = 6 Over 3

4. ∠B ≅ ∠Z

5 0

2 years ago

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