All categories

3 years ago

PLEASE HELP I REALLY NEED HELP

Mathematics

2 answers:

soldi70 [24.7K]3 years ago

4 0

Answer: An is n+1 and A10 is 4

Step-by-step explanation:

The question is very vague and hard to answer. so A1 is -5, count up by 1 ten times, including -5, so -5, -4, ..., 3, 4. An is a just the way it changes, so it adds by one every time.

Hope this helps, it is a very vague question tho.

Anvisha [2.4K]3 years ago

4 0

Step-by-step explanation:

a(n) = a +(n-1)d

d=-4--5=-4+5=1

°.° a(n) = a +(n–1)d

then

a(10) = -5 + (10–1)1

-5+10-1=4

Hope it will help

You might be interested in

Solve this problem: –282 – (+1,017) = ?

klio [65]

The answer is -1,299

4 0

3 years ago

Read 2 more answers

200-[(50-4)×3+5] <img src="https://tex.z-dn.net/?f=200%20-%20%28%2850%20-%204%29%20%5Ctimes%203%20%2B%205%29" id="TexFormula1

lbvjy [14]

200 - [ ( 50 - 4 ) × 3 + 5 ]
= 200 - [ 46 × 3 + 5 ]
<Put brackets around the 2 number that enclose the times sign as a reminder to do that first>
= 200 - [ ( 46 × 3 ) + 5 ]
= 200 - [ 138 + 5 ]
= 200 - (143)
= 57

Hope this helps!

3 0

3 years ago

6 to the power of 3=216. Using exponents, write three more expressions whose value is 216.

Paraphin [41]

Answer:

i think its (2 x 2^2) (3x3^2)

Step-by-step explanation:

4 0

2 years ago

HELP PLEASE!!! I am doing my math and I need someone to help me with this problem. I am very confused and my family is gone on a

yanalaym [24]

Answer:

1) 250 meters= 0.25 km

2) 12 meters= 0.012km

3) 1 meter= 0.001 km

The constant of proportionality is 1000 meters in 1km (1000 meters)

I think there’s a mistake on the second part because 1 meter does not equal to 1000km. but I did part 1 for you!

4 0

3 years ago

One variable examined is the survival rate 10 years after tagging. The scientists observed that 10 of the 50 metal tagged pengui

Oksana_A [137]

Answer: 90% confidence interval would be $(-0.2483,-0.0717)$

Step-by-step explanation:

Since we have given that

n₁ = 50

Number of metal tagged penguins survived = 10

So, $p_m=\dfrac{10}{50}=0.2$

n₂ = 50

Number of electronic tagged penguins = 18

So, $p_e=\dfrac{18}{50}=0.36$

So, at 90% confidence interval, z = 1.28

So, interval would be

$(p_m-p_e)\pm z\sqrt{\dfrac{p_m(1-p_m)}{n}+\dfrac{p_e(1-p_e)}{n}}\\\\=(0.2-0.36)\pm 1.28\sqrt{\dfrac{0.2\times 0.8}{50}+\dfrac{0.36\times 0.64}{50}}\\\\=-0.16\pm 0.0883\\\\=(-0.16-0.0883,-0.16+0.0883)\\\\=(-0.2483,-0.0717)$

Hence, 90% confidence interval would be

$(-0.2483,-0.0717)$

6 0

3 years ago