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3 years ago

The expression 2sq.+2*2/2 equals 7. Copy the expression and insert one pair of parentheses to make the expression equal 11.

Mathematics

1 answer:

Roman55 [17]3 years ago

5 0

Around 2*2/2 because if you do 2 times 2 2/2 it equals 11

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A biased coin has a probability of 0.4 of coming up heads. What is the probability that when flipped one hundred times it comes

inn [45]

Using the binomial probability relation ; the probability that an head is obtained at least 50 times is 0.0271

Using the binomial probability relation :

P(x = x) = nCx * p^x * q^(n-x)
p = probability of success = 0.4
q = 1 - p = 0.6
n = number of trials = 100

P(x ≥ 50) = p(x = 50) + p(x = 51) + ...+ p(x = 100)

Using a binomial probability calculator :

P(x ≥ 100) = 0.0271

Therefore, the probability that atleast 50 heads are obtained in the trial is 0.0271

Learn more :brainly.com/question/12474772

5 0

3 years ago

The line which passes through -2,5 and 6,8

babunello [35]

Answer:

y=(3/8)x+5.75

Step-by-step explanation:

y=mx+b

m=slope

b=y-intercept

m=(8-5)/(6+2)=3/8

y=mx+b

5=3/8(-2)+b

5=-3/4+b

b=5.75

y=mx+b

y=(3/8)x+5.75

3 0

3 years ago

PLEASE HELPPP kahsjahsjad I need help

Klio2033 [76]

Answer:

$166\frac{2}{3} *x=y$

Step-by-step explanation:

$\frac{500}{3} =166\frac{2}{3}$

Therefore, $166\frac{2}{3} *x=y$

7 0

2 years ago

39. Find the length of each arc shown in red. Leave your answer in simplified radical form.

andre [41]

Answer:

The length of the arc shown in red is $\frac{22}{9}\pi\ in$

Step-by-step explanation:

step 1

Find the circumference of the circle

The circumference is equal to

$C=2\pi r$

we have

$r=4\ in$

substitute

$C=2\pi (4)$

$C=8\pi\ in$

step 2

Find the length of the arc in red

Remember that the length of the circumference subtends a central angle of 360 degrees

by proportion find the length of the arc by a central angle of 110 degrees

$\frac{8\pi}{360}=\frac{x}{110}\\ \\x=8\pi*110/360\\ \\x=\frac{880}{360}\pi\ in$

Simplify

$\frac{880}{360}\pi=\frac{22}{9}\pi\ in$

6 0

3 years ago

Which steps can be used to solve for the value of y? (2013 (y +57) = 178

tigry1 [53]

Answer: $y = 121$

$(y+57) = 178$

$y+57= 178$

$y = 178 -57$

$y = 121$

6 0

3 years ago