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3 years ago

Can someone help me with my homework

Mathematics

1 answer:

aniked [119]3 years ago

3 0

Cliff entered on the 10th floor
Up floors would be plus
Down floors would be minus

10+5=15
15-7=8
8+3=11
11-10=1

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the first term of a geometric progression is 12 and the second term is -6. Find the (i) the tenth term of the progression (ii) t

lesantik [10]

Step-by-step explanation:

a1=ar⁰=12 A2=ar¹=-6

a=12 ar=-6

12r=-6

r=-6/12

r=-1/2

a10=ar⁹

=12*(-1/2)⁹

=12*(-512)

=-3/128

S∞ = a1 / (1-r )

=12/(1-1/2)

=12*1/2

6 0

3 years ago

Help solving this problem, the second problem not the third

yawa3891 [41]

Given:

1 Van and 4 buses filled with 195 students.

1 Van and 5 buses filled with 241 students.

Let x and y be the number of students in Van and number of students in bus.

$\begin{gathered} x+4y=195\ldots\text{ (1)} \\ x+5y=241\ldots\text{ (2)} \end{gathered}$

Subtract equation (1) from equation (2)

$\begin{gathered} x+5y-x-4y=241-195 \\ y=46 \end{gathered}$

Substitute y=46 in equation (1)

$\begin{gathered} x+4(46)=195 \\ x+184=195 \\ x=195-184 \\ x=11 \end{gathered}$

Number of students that van can carry is 11.

Number of students that bus can carry is 46

7 0

1 year ago

Find the factors and zeros of 6x^2 +8x-28=2x^2 + 4

Mice21 [21]

Answer:

First solve the equation:

6x^2 + 8x -28 = 2x^2 + 4

=> 6x^2 - 2x^2 + 8x - 28 -4 = 0 => 4x^2 + 8x - 32 = 0

Extract common factor 4:

=> 4[x^2 + 2x - 8] = 0

Now factor the polynomial:

4(x + 4) (x - 2) = 0

=> the solutions are x + 4 = 0 => x = -4, and x - 2 = 0 => x = 2.

So the answer is the option B: 4(x + 4)(x - 2); {-4, 2}

HOPE THIS HELPS! :D

4 0

2 years ago

How many times do we have to multiply 3.25 to get 13?

yawa3891 [41]

Answer:

4 times

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Please help solve this

notsponge [240]

Answer:

1/6

Step-by-step explanation:

so what you want to do first to create a common denominator:

1. multiply 2/3 by 2 to get a denominator of 6

2. Now you have 4/6, to solve for x you subtract 4/6 from the total

$\frac{5}{6} - \frac{4}{6} = \frac{1}{6}$

thats how you get your answer!

Hope this helped :)

5 0

3 years ago

Read 2 more answers