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3 years ago

What rule must be applied when evaluating an expression in which the

Mathematics

2 answers:

qaws [65]3 years ago

7 0

Answer:

see explanation

Step-by-step explanation:

When evaluating a expression in which operations have the same priority.

Then evaluate from left to right

zavuch27 [327]3 years ago

4 0

Answer:

They are calculated from left to right.

Step-by-step explanation:

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If tñ=2ñ+3, find S10

Allisa [31]

Answer:

$S_{10}=280$

Step-by-step explanation:

Given that,

$t_n=2n+3$ ...(1)

We need to find the value of $S_{10}$ .

Put n = 1 to find the first term.

$t_1=2(1)+3=5$

Put n = 2 to find the second term.

$t_2=2(2)+3=7$

Put n = 3 to find the third term.

$t_3=2(3)+3=9$

Put n = 10 to find the tenth term.

$t_{10}=2(10)+3=23$

It means we need to find the sum of 5,7,9,.....,23.

The formula for the sum of n terms is given by :

$S_=\dfrac{n}{2}(a+a_n)$

We have, n = 10, a = 5 and $a_n=23$

So,

$S=\dfrac{10}{2}(5+23)\\\\S_{10}=10\times 28\\\\=280$

So, the value of $S_{10}$ is equal to 280.

3 0

3 years ago

Tyler's bag of shells weighs 4.97 pounds. He finds 2 stones that weigh the same as each other and adds them to the bag. Tyler's

LUCKY_DIMON [66]

Answer:

it should be 0.7

Step-by-step explanation:

5 0

3 years ago

Use the multiplier method to decrease £262 by 39% You must show your working.

Oksanka [162]

Answer:

£159.82

Step-by-step explanation:

Decrease of 39% of £262

39/100 × £262

0.39×262

102.18

So the decrease will be

262-102.18

159.82

So the final answer is £159.82

6 0

3 years ago

Read 2 more answers

An architect is sketching a blueprint of a patio for a new fence. On the blueprint, C is the midpoint of segment AD. Point B is

Gre4nikov [31]

Answer:

The length of AD is 32 feet

Step-by-step explanation:

Proportional distances

When distances are proportions of others, we can express all of them as relative fractions until we reach some known distance and solve for the desired length

Let's call x the length of AD. Given C is the midpoint of AD, then

$\displaystyle AC=CD=\frac{x}{2}$

Given B is the midpoint of AC, then

$\displaystyle AB=BC=\frac{AC}{2}=\frac{x}{4}$

If we know BC=8 feet

$\displaystyle \frac{x}{4}=8\ feet$

$\displaystyle x=32\ feet$

The length of AD is 32 feet

4 0

3 years ago

Will give brainliest please help asap

ella [17]

What do you need help with?

4 0

2 years ago