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3 years ago

My son has this homework and I never have done this before can someone help What is 11-8=2+___

Mathematics

2 answers:

steposvetlana [31]3 years ago

4 0

Im thinking about 9 that's new stuff so im not sure

ruslelena [56]3 years ago

3 0

11-8=3 where as 2+1=3
I did something like this before but there are other teaching methods that his teacher might be using so I apologize if I am incorrect. :)

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I need help please and thanks

lakkis [162]

Answer:

the answer is associative

Step-by-step explanation:

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3 years ago

Q - 8 as a verbal expression

sertanlavr [38]

Answer:

Step-by-step explanation:

An unknown number minus 8.

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3 years ago

A company’s sales decreased 5% this year to $6,585. What were their sales last year?

Feliz [49]

Answer:

$6932

Step-by-step explanation:

Let last year's sales = x. Since there was a decrease of 5%, that means this year's sales are 95% of last year's sales.

So, .95x = 6585

x = 6932 to the nearest dollar

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2 years ago

Write an equation for the line of fit for this data in the form y=mx+b where x is latitude and y is temperature.

notka56 [123]

Answer:

$y = -x + 115$

Step-by-step explanation:

Given

See attachment for graph

Required

The equation of best fit

First, we pick two corresponding points on the graph,

We have:

$(x_1,y_1) =(55,60)$

$(x_2,y_2) =(45,70)$

Calculate slope (m)

$m = \frac{y_2 -y_1}{x_2 - x_1}$

This gives:

$m = \frac{70 - 60}{45 - 55}$

$m = \frac{10}{-10}$

$m = -1$

The equation is the calculated using:

$y = m(x - x_1) + y_1$

This gives

$y = -1(x - 55) + 60$

Open bracket

$y = -x + 55 + 60$

$y = -x + 115$

5 0

3 years ago

Find the length of each arc. Round your answers to the nearest tenth. r = 40 =24use 3.14 for π

liraira [26]

Answer:

1.7 units

Explanation:

The length of an arc is calculated using the formula below:

$l=\frac{\theta}{360\degree}\times2\pi r$

Substitute the given values of θ and r:

$\begin{gathered} l=\frac{24\degree}{360\degree}\times2\times3.14\times4 \\ =1.674 \\ \approx1.7\text{ units (to the nearest tenth)} \end{gathered}$

The length of the arc is 1.7 units.

6 0

1 year ago