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joja [24]
3 years ago
9

Please help, thank you:)

Mathematics
1 answer:
lesya [120]3 years ago
8 0

Answer:

63.8

Step-by-step explanation:

a1 = -6.4 and d = 2.6

a(n) =  a1 + d(n - 1)

a(28) = -6.4 + 2.6(27)

a(28) = 63.8

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5 0
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2t+8 &gt; -4 (t+1)<br> THE &gt; HAS A LIL LINE UNDER IT :)<br> &gt; = ____<br> _
lara31 [8.8K]
2t + 8 ≥ -4(t+1)

PEMDAS

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7 0
3 years ago
An urn contains 12 balls, of which 4 are white.
wel

Answer:

a) \frac{1}{3}

b) \frac{4}{12}\,,\,\frac{4}{11}\,,\,\frac{4}{10}\,,...

Step-by-step explanation:

Number of balls in the urn = 12

Number of white balls in the urn = 4

So, number of balls which are not white = 12 - 4 = 8

We know that probability = No. of outcomes/Total number of outcomes

Let A_i\,,\,B_i\,,\,C_i denotes the event of getting white ball by A, B and C

a) each ball is replaced after being drawn.

Probability = Number of white balls/Total number of balls

Solution: P(A_i)=P(B_i)=P(C_i)=\frac{4}{12}=\frac{1}{3}

b)the balls that are withdrawn are not replaced.

Solution:

If A wins: P(A_1)=\frac{4}{12}=\frac{1}{3}

If A lost and B wins: P\left ( B_1|A_1^{c} \right )=\frac{4}{11}

If A and B lost and C wins: P\left ( C_1|A_1^{c}\,B_1^{c} \right )=\frac{4}{10}

and so on....

4 0
3 years ago
Vertex and axis of symmetry
Furkat [3]

Answer:

Vertex = (-3, -1)

Axis of Symmetry: x = -3

Step-by-step explanation:

The vertex is (-3, -1), the axis of symmetry is x = -3. The x-intercept is -2 and -4, the y intercept is 8, the domain is R, the range is [-1, inf.]

The function is increasing in {-3, inf.} and decreasing in {-inf., 3}

5 0
3 years ago
What is a coefficient? Give me an example.
aksik [14]

Answer:

A coefficient is the number next to a letter. It's used to multiply a variable. If there is just a variable then the coefficient is 1. For example 6x.

Step-by-step explanation:

7 0
3 years ago
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