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3 years ago

Please help answer number 6 click image. Nice

Mathematics

1 answer:

madam [21]3 years ago

7 0

A total of 1369 students enrolled this year

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A washing machine manufacturer says that 85% of its washers last five years before repairs are necessary. A random sample of 100

Tresset [83]

Step-by-step explanation:

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7 0

3 years ago

Please help on how to get last few marks

Strike441 [17]

Answer:

K = 12

Step-by-step explanation:

10 Cos 30° – 3 Tan 60°

The above expression can be simplified as follow:

10 Cos 30° – 3 Tan 60°

Recall:

Cos 30° = √3/2

Tan 60° = √3

Therefore,

10 Cos 30° – 3 Tan 60°

10 (√3/2) – 3(√3)

5√3 – 3√3

(5 – 3) √3

2√3

To write the above expression 2√3 in the form √K, we simply do the following:

2√3

Find a number, such that the square root of the number will result to 2. The number is 4 as shown below

√4 = 2

Next, replace 2 with √4 in the expression above

2√3

= √4 × √3

= √(4 × 3)

= √12

Therefore,

2√3 = √12

Comparing √12 with √K,

√12 = √K

K = 12

3 0

3 years ago

A sequence of numbers follows the rule: multiply the previous number by -2 and add 3. The fourth term in the sequence is -7. Giv

nevsk [136]

Answer:

Next 3 terms: 17, -31, 65

3 terms before -7: 2, -1, 5

Step-by-step explanation:

Fourth term in the sequence = -7

Rule for finding the next term:

$a_n=-2\times a_{n-1}+3$

Therefore, the fifth term:

$a_5=-2\times a_4+3\\\Rightarrow a_5=-2\times -7+3\\\Rightarrow \bold{a_5=17}$

Sixth term:

$a_6=-2\times a_5+3\\\Rightarrow a_6=-2\times 17+3\\\Rightarrow \bold{a_6=-31}$

Seventh term:

$a_7=-2\times a_6+3\\\Rightarrow a_7=-2\times -31+3\\\Rightarrow \bold{a_7=65}$

Let the three terms that came before -7 be: $x, y, z$

As per question statement:

$a_n=-2\times a_{n-1}+3$

$-7 = -2\times z+3\\\Rightarrow -2z=-10\\\Rightarrow z=5$

Again applying the given rule:

$5 = -2\times y+3\\\Rightarrow y =-1$

Again applying the given rule:

$-1 = -2\times x+3\\\Rightarrow x =2$

Therefore the 3 terms before -7 are:

2, -1, 5

5 0

3 years ago

Inverse of y=log(x+1)

atroni [7]

$f(x) = log(x + 1)$
$y = log(x + 1)$
$x = log(y + 1)$
$10^{x} = y + 1$
$10^{x} - 1 = y$
$10^{x} - 1 = f^{-1}(x)$

3 0

3 years ago

Read 2 more answers

UNIT 1 LESSON 5

vesna_86 [32]

Answer:

yes I do the first answer is Angle Y=Angle H , the second is SAS, the third is 100 degrees, and the last one is triangle QRP is congruent to triangle SRT by ASA. Let me know is this is the right one or not.

3 0

3 years ago

Read 2 more answers