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3 years ago

12

Sally rolled a 6-sided number cube 40 times and it landed on 4 eight times. What is the experimental probability of Sally gettin

g a 4?

1 answer:

Sedbober [7]3 years ago

5 0

P(roll a 4) = 8/40. It is 8/40 because you rolled the a 4 eight times out of the forty tries. Hope this helps!

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Why is 4 + (−3) equal to 1?

vladimir2022 [97]

Answer:

2nd option

Step-by-step explanation:

4 + (-3) = 1 because the signs mismatch, something cannot be both positive or negative. When the signs are the same, whether it be both positive or both negative, the answer will always be positive, while if the signs are mismatching the answer will always be negative.

Hope I helped!

7 0

3 years ago

ohaa [14]

Answer:

$(2,2)~ \text{and}~ (-2,-2)$

Step by step explanation:

$x^2 +y^2 =8~~~~~~...(i)\\\\x-y=0~~~~~~~~~...(ii)\\\\\text{From (ii):}\\\\x-y = 0 \implies x = y\\\\\text{Substitute x = y in eq (i):}\\\\~~~~~~y^2 +y^2 =8\\\\\implies 2y^2 = 8\\ \\\implies y^2 = \dfrac 82\\\\\implies y^2 = 4\\\\\implies y = \pm\sqrt 4\\\\\implies y = \pm 2\\\\\text{Substitute y = x in equation (i):}\\ \\~~~~~~x^2 +x^2 = 8\\ \\\implies 2x^2 = 8\\\\\implies x^2 = \dfrac 82\\\\\implies x^2 = 4\\\\\implies x = \pm\sqrt 4\\\\\implies x = \pm2\\\\$

$\text{Hence,}~ (x,y) = (\pm2, \pm 2)$

3 0

2 years ago

Can someone help me!

victus00 [196]

Answer:

m∠A = 48.81°

Step-by-step explanation:

Given triangle is a right triangle and we have to measure ∠A.

Since, opposite side and adjacent sides of angle A has been given

So we will apply tangent rule to get the measure of angle A.

tan(∠A) = $\frac{\text{Opposite side}}{\text{Adjacent side}}$

tan(∠A) = $\frac{8}{7}$

∠A = $\text{tan}^{-1}(\frac{8}{7})$

∠A = 48.814

≈ 48.81°

8 0

3 years ago

Write an expression that sho how to use the halving and doubling strategy to find 28×50

swat32

28x50
14x100
7x200=14,000

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4 years ago

How to write two and sixty three Hundredths in decimal form

Y_Kistochka [10]

2.063 or 2.63 I think

7 0

3 years ago