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2 years ago

Jana has a number cube numbered 1 to 6. She plans to roll the cube 78 times. Predict the number of times Jana will roll a 2.

Mathematics

1 answer:

Natali5045456 [20]2 years ago

7 0

78/6=13 theres not much to it just divide

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What is the slope of the line represented by the equation Y= -2/3-5x

Elina [12.6K]

Answer:

The slope is -5

Step-by-step explanation:

<u>Slope is the number attached to the x</u>

For this problem, y = -2/3 - 5x, the slope/number attached to the x is -5. So, the slope is -5.

Answer: The slope is -5

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2 years ago

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Use the quadratic formula to solve the equation <br> 25x^2-30x+25=0

Reika [66]

Answer: $x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}$

Step-by-step explanation:

$25x^2-30x+25=0$

$x_{1,\:2}=\frac{-\left(-30\right)\pm \sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}}{2\cdot \:25}$

$\sqrt{\left(-30\right)^2-4\cdot \:25\cdot \:25}$

$=\sqrt{30^2-4\cdot \:25\cdot \:25}$

$=\sqrt{30^2-2500}$

$=i\sqrt{2500-30^2}$

$=40i$

$x_{1,\:2}=\frac{-\left(-30\right)\pm \:40i}{2\cdot \:25}$

$x_1=\frac{-\left(-30\right)+40i}{2\cdot \:25},\:x_2=\frac{-\left(-30\right)-40i}{2\cdot \:25}$

$x=\frac{3}{5}+i\frac{4}{5},\:x=\frac{3}{5}-i\frac{4}{5}$

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2 years ago

Factor 1/8 out of 1/8x-49/8

svetoff [14.1K]

Answer:

1/8(x - 49)

Step-by-step explanation:

When we factor out something, we are basically finding common factors from multiple terms to take out. Example:

ab + ac; factored out: a(b + c)

If we want to factor out 1/8 from 1/8x - 49/8, we simply divide the two terms by 1/8.

$\frac{1/8}{1/8x}$ The 1/8 cancel out giving us x so:

1/8(x - __)

The next term,

$\frac{49/8}{1/8}$

When two fractions divide, you flip the bottom one and multiply them both,

$\frac{49}{8} *\frac{8}{1}$

giving us 49.

The answer is: 1/8(x - 49)

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2 years ago

Henry is making a recipe for biscuits. A recipe calls for 5/10 kilogram flour and 9/100 kilogram sugar.how much sugar and flour

Nonamiya [84]

So first find a common denominator which is 100 in this question. Then change 5/10 into a denominator of 100 which is 50/100 you don't have to change 9/100 because it has a denominator of 100. So then add the fractions and the answer is 59/100

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3 years ago

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yarga [219]

Answer:

3.5 feet.

Step-by-step explanation:

There are 12 inches in a foot.

So, 42 ÷ 12 = 3.5.

Hope this helped, have a blessed day and best of luck!

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2 years ago

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