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dmitriy555 [2]
3 years ago
8

Please help me with this question!!

Mathematics
1 answer:
KonstantinChe [14]3 years ago
3 0

Answer:

y=8(0.5)^x

Step-by-step explanation:

We can find the value of b, which is the rate. The rate is 0.5 because the y value is consistently going down by 2. A is the first value, which is 8. y=8(0.5)^x

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An experienced teacher writes an exam so that, on average, about 5% of students will earn an A grade. If she has 50 students in
guapka [62]

Answer:

P(x\geq 1)     = 0.923

Step-by-step explanation:

From the question we are told that:

Percentage of student to get A P(A)=\%5=0.05

Sample size n=50

Generally Number of student to get A is

N_a=n*P(A)

N_a=50*0.05

N_a=2.5

Therefore

Probability that one student gets an A grade is mathematically by

  ^nPC_xP^x(1-P)^{n-x}

 P(x\geq 1)=1-P(x

 P(x\geq 1)  =1-P(x=0)

 P(x\geq 1)   =^50C_0(0.05)^0(0.95)^50

 P(x\geq 1)     = 0.923

3 0
3 years ago
Evaluate the expression.
gizmo_the_mogwai [7]

Answer:

40

Step-by-step explanation:

To solve this question you will need to use BEDMAS which is the order of which numbers you have to solve first. In this case you need to solve the brackets first, then the exponent, and then lastly the addition.

 3^3 + 3(4 + 1/3)

= 3^3 + 3(13/3)

= 27 + 3 x 13/3

= 27 + 13

= 40

4 0
3 years ago
Please help asap! 10 points given if correct!!
lapo4ka [179]

Answer:

mr

Step-by-step explanation:

because if m/n = p/r then pn must be = mr like in this expression

2/3 = 4/6 if you multiply 2×6 = 3×4

8 0
3 years ago
hawick is 15 miles south of abbostford and kelso is 17 miles east of abbotsford. what is the distance from Hawwick to kelsi?
Alexus [3.1K]

Answer:

22.7 miles

Step-by-step explanation:

You are gonna use a^2 + b^2 = c^2 because the cities make a right triangle and you are trying to find the hypotenuse (c). C^2 ends up being 517 and the square root.

6 0
3 years ago
Consider the enlarged triangle.
adelina 88 [10]

Find the scale factor: StartFraction enlarged over original EndFraction = StartFraction 6 over 3 EndFraction = 2

Calculate the perimeter of the original figure.

Multiply the perimeter of the original figure by the scale factor.

Step-by-step explanation:

A, C, D

5 0
3 years ago
Read 2 more answers
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