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frutty [35]
3 years ago
12

Sole the equation x^2=16

Mathematics
2 answers:
dlinn [17]3 years ago
6 0

Answer:

x = ± 4

Step-by-step explanation:

Given

x² = 16 ( take the square root of both sides )

x = ± \sqrt{16} = ± 4

That is x = - 4, x = 4

prohojiy [21]3 years ago
4 0

Answer:

4

Step-by-step explanation:

4^2 = 4x4 = 16

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A map is drawn to scale such that 1 inch equals 100 miles. To mark a distance of 500 miles, the length on the map must be_____ i
Degger [83]

Answer:

5 inches

Step-by-step explanation:

its simple

1in-100m

500m= 100m x 5

so multiply five to the other side

1in x 5=5 in

5in-500m

7 0
2 years ago
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The width of a rectangle is 6 less than half the length. If x represents the length, which equation could be used to find the wi
Shtirlitz [24]

Answer:

C. y=1/2x-6

Step-by-step explanation:

The correct answer is C. y=1/2x-6.

If we are finding 1/2 of the length, and the length is represented by x, than we would have 1/2x.

It also says 6 less than halve of the length, so we would represent that as 1/2x-6, and that shows us the proper equation to find the width.

Hope this helps!

5 0
3 years ago
A triangular pyramid is formed from three right triangles as shown below.
Lady bird [3.3K]

ΔADC is a right angle triangle, we will use the Pythagorus Theorem to find the length CD.

Formula of the Pythagorus Theorem :  

⇒ a² + b² = c²

⇒ AD² + CD² = AC²

The value of AD is 54 and the value of AC is 90:

54² + CD² = 90²

Solve for CD:

54² + CD² = 90²

CD² = 90² - 54²

CD² = 5184

CD = √5184

CD = 72

ΔADC is also a right angle triangle, we will use the Pythagorus Theorem to find the length BD.

Formula of the Pythagorus Theorem :  

⇒ a² + b² = c²

⇒ BD² + CD² = BC²

The value of CD is 72 and the value of BC is 97:

BD² + 72² = 97²

Solve for BD:

BD² = 97² - 72²

BD² = 4225

BD = √4225

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Answer: The length of BD is 65 units.

7 0
3 years ago
Quiz Normal Distribution
nadya68 [22]

Answer:

b

Step-by-step explanation:

cause its 7

i know also cause it what i do im a math teacher at k12 online school

7 0
2 years ago
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David is driving on the highway. He begins the trip with 14 gallons of gas in his car. The car uses up one gallon of gas every 2
ehidna [41]

Answer:

G = -D/20 + 14

Graph in the image attached.

Step-by-step explanation:

Using the model of a linear equation, we have:

G = aD + b

'b' is the y-intercept of the equation, that is, the inicial value of G, when D = 0.

So if David starts the trip with 14 gallons of gas, we have b = 14.

'a' is the slope of the line, that is, an increase of 1 in the value of D causes an increase of 'a' in the value of G.

So if the car uses one gallon every 20 miles, the value of a is -1/20 (an increase of 20 in D causes a decrease of 1 in G).]

So our equation is:

G = -D/20 + 14

The graph of this equation is in the image attached.

4 0
3 years ago
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