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Artemon [7]
2 years ago
10

What is the value of the expression below when z = 8 and w= = 8? 2z + 7w

Mathematics
2 answers:
timama [110]2 years ago
8 0
The answer to your question is 72.
ycow [4]2 years ago
7 0
2(8) + 7(8)
16 + 56
72
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Allen's hummingbird (Selasphorus sasin) has been studied by zoologist Bill Alther.† Suppose a small group of 10 Allen's hummingb
ruslelena [56]

Answer: provided in the explanation segment

Step-by-step explanation:

(a). from the question, we can see that since that б is known, we can use standard normal, z.

we are asked to find an 80% confidence interval for the average weights of Allen's hummingbirds in the study region. What is the margin of error?

⇒ 80% confidence interval for the average weight of Allen's hummingbirds is given thus;

x ± z * б / √m

which is

3.15 ± 1.28 * 0.32/√10

= 3.15 ± 0.1295 = 3.0205 or 3.2795

(b). normal distribution of weight (c) б is known

(c). option (a) and (e) are correct

(d).  from the question, let sample size be given as S

this gives';

1.28 * 0.32/√S = 0.15

√S = (1.28 * 0.32) / 0.15 = 2.73

S = 7.4529

cheers i hope this helps

6 0
3 years ago
A 20-sided regular polygon has an angle measure represented as 3gº.
Andre45 [30]

The value of g in the 20 sided regular polygon is 54.

<h3>How to find the angles of a regular polygon?</h3>

If all the polygon sides and interior angles are equal, then they are known as regular polygons.

The polygon given is a 20 sided regular polygon and the measure of each angle is 3g degrees.

Therefore, let's find g.

The sum of interior angles of a 20 sided polygon is as follows:

180(n - 2) = 180(20 - 2) = 180(18) = 3240

Therefore,

each angle = 3240 / 20 = 162

Hence,

162 = 3g

g = 162 / 3

Therefore,

g = 54

learn more on regular polygon here: brainly.com/question/16992545

#SPJ1

8 0
1 year ago
I’m confused on this one
Lisa [10]

The angle x is half the sum of the intercepted arcs, PQ and NO.

... (1/2)(65° + 45°) = 55° = x° = m∠PMQ

3 0
3 years ago
A chocolate thickshake costs $2 more than a fruit smoothie. jack pays $27 for 3 chocolate thick shakes and 4 fruit smoothies. Ho
KIM [24]

Chocolate thickshakes will cost $5 and fruit smoothies will cost $3. Let's say the cost of chocolate thickshakes are x and the cost of fruit smoothies are y.

3x + 4y = 27

3x + 3y = 24

4 0
3 years ago
Read 2 more answers
100% ☺
raketka [301]
Answer :

I believe it’s x = 8 and y = 9

Explanation: hope this helps (got this from somebody else on here)

7 0
2 years ago
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