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Hunter-Best [27]
4 years ago
6

Kinda been stuck on this one, someone pls let me know

Mathematics
2 answers:
laila [671]4 years ago
7 0

Answer:

255

Step-by-step explanation:

∑ᵢ₌₁⁸ 2ⁱ⁻¹

Using brute force method:

S = 2⁰ + 2¹ + 2² + 2³ + 2⁴ + 2⁵ + 2⁶ + 2⁷

S = 1 + 2 + 4 + 8 + 16 + 32 + 64 + 128

S = 255

Using formula:

S = a₁ (1 − rⁿ) / (1 − r)

S = 1 (1 − 2⁸) / (1 − 2)

S = 255

yulyashka [42]4 years ago
5 0

Answer:

255

Step-by-step explanation:

use calculator

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Try this one please i will give you 50 points
dangina [55]

Answer:

18.50 ft

Step-by-step explanation:

<u>Add 1.25 to the length:</u>

3 + 1.25 = 4.25

The formula for the perimeter of a rectangle is: L + L + W + W.

To find the perimeter quicker, multiply the length and width by 2, then add.

5.00(2) = 10.00

4.25(2)= 8.50

10.00 + 8.50 = 18.50

6 0
3 years ago
Read 2 more answers
If a couple were planning to have three​ children, the sample space summarizing the gender outcomes would​ be: bbb,​ bbg, bgb,​
marusya05 [52]

Answer:

(a) The sample space is: S = {bb, bg, gb, gg}

(b) The probability that the couple has two girl children is 0.25.

(c) The probability that the couple has exactly 1 boy and 1 girl child is 0.50.

Step-by-step explanation:

A boy child is denoted by, <em>b</em>.

A girl child is denoted by, <em>g</em>.

(a)

A couple has two children.

The sample space for the possible gender of the two children are:

The couple can have two boys, two girls or 1 boy and 1 girl.

So the sample space is:

S = {bb, bg, gb, gg}

(b)

It is provided that the outcomes of the sample space <em>S</em> are equally likely, i.e. each outcome has the same probability of success.

Compute the probability that the couple has two girl children as follows:

P (2 Girls) = Favorable no. of outcomes ÷ Total no. of outcomes

                =\frac{1}{4} \\=0.25

Thus, the probability that the couple has two girl children is 0.25.

(c)

Compute the probability that the couple has exactly 1 boy and 1 girl child as follows:

P (1 boy & 1 girl) = Favorable no. of outcomes ÷ Total no. of outcomes

                          =\frac{2}{4} \\=0.50

Thus, the probability that the couple has exactly 1 boy and 1 girl child is 0.50.

7 0
3 years ago
What is the y-intercept of f(x) = 1 + log2(11x + 4)?
NISA [10]

Answer:

(0,3)

Step-by-step explanation:

Hope this helps :)

4 0
3 years ago
A statement that's known to be always true or always false is a <br>​
V125BC [204]

Answer:

The statement that's known to be always true is known as tautologies whereas the statement that's known to be always false is known as contradiction.

4 0
3 years ago
Just answer number 1 <br> M&lt;7=30 ,m&lt;2 ?
zubka84 [21]

Answer:

Step-by-step explanation:

1). ∠7 ≅ ∠ 2 (alternate exterior)

m∠7 = m∠2 = 30°

2). ∠4 and ∠1 are supplementary angles

m∠1 = 180° - 72° = 108°

3 0
3 years ago
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