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3 years ago

Can someone explain how im meant to do this please? :)

Mathematics

1 answer:

valina [46]3 years ago

7 0

Answer:

you have to do

92×98=9016

then 9016=10(here we roud to 1 signification figure)

49×138=6762

6762=6

216×876=189216

189216=1

i think it’s the answers

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The manufacturer of a certain engine treatment claims that if you add their product to your engine, it will be protected from e

Oksana_A [137]

Answer: $H_0:\mu\geq33$

$H_a:\mu$

Step-by-step explanation:

Let $\mu$ be the average number of hours a person drive without adding the product.

Given claim : An infomercial claims that a woman drove 33 hours without oil.

i.e. $\mu\geq33$

It is known that the null hypothesis always contains equal sign and alternative hypothesis is just opposite of the null hypothesis.

Thus the null and alternative hypothesis for the given situation will be :-

$H_0:\mu\geq33$

$H_a:\mu$

3 0

3 years ago

Read 2 more answers

1 \ 3 ( 24p - 66) = 3p + 43

NeTakaya

1/3(24p-66) = 3p + 43= 1/3*24p-1/3*66=3p + 43= 8p-22=3p + 43=8p - 3p=43+22=5p=65=p=65/5=13 hope this helped!

6 0

3 years ago

A geometric sequence is defined by the equation an = (3)3 − n.

Delvig [45]

PART A

The geometric sequence is defined by the equation

$a_{n}=3^{3-n}$

To find the first three terms, we put n=1,2,3

When n=1,

$a_{1}=3^{3-1}$

$a_{1}=3^{2}$

$a_{1}=9$
When n=2,

$a_{2}=3^{3-2}$
$a_{2}=3^{1}$

$a_{2}=3$

When n=3

$a_{3}=3^{3-3}$

$a_{3}=3^{0}$
$a_{1}=1$
The first three terms are,

$9,3,1$

PART B

The common ratio can be found using any two consecutive terms.

The common ratio is given by,
$r= \frac{a_{2}}{a_{1}}$
$r = \frac{3}{9}$

$r = \frac{1}{3}$

PART C

To find
$a_{11}$

We substitute n=11 into the equation of the geometric sequence.

$a_{11} = {3}^{3 - 11}$

This implies that,

$a_{11} = {3}^{ - 8}$

$a_{11} = \frac{1}{ {3}^{8} }$

$a_{11}=\frac{1}{6561}$

4 0

3 years ago

The circulation of a newsletter decreased from 5300 to 3630. Find the percent of decrease in circulation to the nearest percent.

Rainbow [258]

((3,630−5,300)÷5,300)×100=−31.5%

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3 years ago

The line joining (4, 2) to (6, b) has a gradient of 3. Find the value of b

MrRa [10]

Answer:

-0.5

Step-by-step explanation: