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3 years ago

I need the answer to this question please 4(3 - 2x) = 15

Mathematics

1 answer:

Alecsey [184]3 years ago

3 0

The correct answer would be -3/8 or in decimal form -0.375 :)

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Margie wants to collect 3600 cans of food to donate to the community food bank.She plans to collect equal number of can for 4 mo

Alex777 [14]

Answer:

If its per month then its 900

Step-by-step explanation:

3600/4 = 900

900*4 = 3600

5 0

3 years ago

Which is a solution to the equation 6x + y = –4?

Stolb23 [73]

(x,y)
sub those for x and y and see if you get a true statement

(2,-8)
6(2)+-8=-4
12-8=-4
4=-4
fasle

(2,8)
6(2)+8=4
12+8=4
20=4
false

(1,2)
6(1)+2=4
4+2=4
6=4
false

(1,-10)
6(1)+-10=4
6-10=-4
-4=-4
true

ANSWER IS D

7 0

3 years ago

If S_1=1,S_2=8 and S_n=S_n-1+2S_n-2 whenever n≥2. Show that S_n=3⋅2n−1+2(−1)n for all n≥1.

Snezhnost [94]

You can try to show this by induction:

• According to the given closed form, we have $S_1=3\times2^{1-1}+2(-1)^1=3-2=1$ , which agrees with the initial value S₁ = 1.

• Assume the closed form is correct for all n up to n = k. In particular, we assume

$S_{k-1}=3\times2^{(k-1)-1}+2(-1)^{k-1}=3\times2^{k-2}+2(-1)^{k-1}$

and

$S_k=3\times2^{k-1}+2(-1)^k$

We want to then use this assumption to show the closed form is correct for n = k + 1, or

$S_{k+1}=3\times2^{(k+1)-1}+2(-1)^{k+1}=3\times2^k+2(-1)^{k+1}$

From the given recurrence, we know

$S_{k+1}=S_k+2S_{k-1}$

so that

$S_{k+1}=3\times2^{k-1}+2(-1)^k + 2\left(3\times2^{k-2}+2(-1)^{k-1}\right)$

$S_{k+1}=3\times2^{k-1}+2(-1)^k + 3\times2^{k-1}+4(-1)^{k-1}$

$S_{k+1}=2\times3\times2^{k-1}+(-1)^k\left(2+4(-1)^{-1}\right)$

$S_{k+1}=3\times2^k-2(-1)^k$

$S_{k+1}=3\times2^k+2(-1)(-1)^k$

$\boxed{S_{k+1}=3\times2^k+2(-1)^{k+1}}$

which is what we needed. QED

6 0

3 years ago

A ball is thrown into the air from a height of 4 feet at time t = 0. The function that models this situation is

Aleksandr-060686 [28]

Answer:

B, D, B, D

Step-by-step explanation:

4 0

3 years ago

I need answers for number 20 I need This done by Tuesday

nikdorinn [45]

One ticket costs $24.50 - $19 more for evening

Six tickets cost 6 ( $24.50 - $19 ) more

Answer: 6 ( $24.50 - $19 )

Problem 18 is D by the way

6 0

3 years ago