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3 years ago

What is two plus two

Mathematics

2 answers:

MaRussiya [10]3 years ago

7 0

Answer:2+2=4 that is smart math

Step-by-step explanation:)

ExtremeBDS [4]3 years ago

3 0

Answer:4

Step-by-step explanation:

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A tennis ball bounces based on this equation y = x2 - x+2. A dog jumps based on this equation y=2x.

valentina_108 [34]

Answer: when the equations are equal, that is when x = 1 or x = 2

Step-by-step explanation:

The dog will receive the ball , when both equations intercept , that is , when both equations are equal. This implies :

$x^{2}$ - x + 2 = 2x

$x^{2}$ - x - 2x + 2 = 0

x(x-1) - 2 (x - 1 ) = 0

(x - 1 ) ( x - 2 ) =0

Therefore , x = 1 or x = 2

5 0

3 years ago

Write and solve a proportion to find the height of the building.

slavikrds [6]

Write and solve an equation of ratios:

9 ft 22 ft

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

h 99 ft

This is appropriate because h is greater than 9 ft.

cross-multiplying, we get

9(99) ft^2 = 22*h*ft

Then h =40.5 ft (which is the height of the building)

7 0

3 years ago

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The weights of steers in a herd are distributed normally. The variance is 40,00040,000 and the mean steer weight is 1400lbs1400

Alex777 [14]

Answer:

$P(1739$

(Correct to 4 decimal places)

Step-by-step explanation:

The probability of a continuous normal variable X found in a particular interval [a, b] is the area under the curve bounded by x=a and x=b and is given by:

$P(a$

where

$f(X)=\frac{1}{\sigma \sqrt{2 \pi} }e^{-\frac{1}{2} (\frac{x-u}{ \sigma} )^2}$

$f(X)=\frac{1}{200 \sqrt{2 \pi} }e^{-\frac{1}{2} (\frac{x-1400}{ 200} )^2}\\=\frac{1}{200 \sqrt{2 \pi} }e^{- \frac{(x-1400)^2}{ 80000}\\$

$P(1739$

Using a calculator,

$P(1739$

5 0

3 years ago

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X+58=6 what is the value of x

bulgar [2K]

The answer would be negative fifty two
-52

X+58=6
58-6=52
So the answer would be negative 52

5 0

3 years ago

Solve. 10x^2 = 6 + 9x10x 2 =6+9x10, x, start superscript, 2, end superscript, equals, 6, plus, 9, x Choose 1 answer: Choose 1 an

yulyashka [42]

Answer:

Option B.

Step-by-step explanation:

If a quadratic equation is defined as

$ax^2+bx+c=0$ .... (1)

then the quadratic formula is

$x=\dfrac{-b\pm \sqrt{b^2-4ac}}{2a}$

The given equation is

$10x^2=6+9x$

It can rewritten as

$10x^2-9x-6=0$ .... (2)

On comparing (1) and (2) we get

$a=10,b=-9,c=-6$

Using quadratic formula we get

$x=\dfrac{-(-9)\pm \sqrt{(-9)^2-4(10)(-6)}}{2(10)}$

$x=\dfrac{9\pm \sqrt{81+240}}{20}$

$x=\dfrac{9\pm \sqrt{321}}{20}$

Therefore, the correct option is B.

6 0

3 years ago

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What is two plus two​

What is two plus two