Solve the following expression: (9 x 10) - (30 + 30). Show all steps taken.

Answers

Answer 1
Answer:

Answer:

First multiply each brackets

90-60

30

Step-by-step explanation:

Answer 2
Answer:

Answer:

9 x 3= 27 and 30 + 30=  60.. so 60- 27= 33, but if you want to do 27- 30.. it would be -33.

Step-by-step explanation:

Hope that answers your question!


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Write the expanded form 0.45 in this way using fractions and using decimals

Answers

Using fractions, 0.45 can be written as (3)/(10)+ (3)/(20). Using decimals, 0.45 can be written in the form as 0.30 + 0.15.

What is Decimal Numbers?

Decimal number system is applicable for both integers as well as non integers. Decimal number include a whole number part and a decimal part separated using decimal point.

Fractions are the numbers which are part of a whole.

All decimal numbers can be written as fractions and fractions can be written in the form of decimal numbers.

The given number is 0.45.

0.45 can be written as (45)/(100).

(45)/(100) can be expanded in various ways like (40 + 5)/100, (42 + 3)/100 and so on.

(45)/(100) can be written in one of the form as (30)/(100) + (15)/(100).

When simplified, (30)/(100)simplified to (3)/(10)and (15)/(100) simplified to (3)/(20).

So 0.45 = (3)/(10)+ (3)/(20).

Now, in the decimal form, (3)/(10)= 0.3 and (3)/(20)= 0.15

So, 0.45 = 0.3 + 0.15

Hence 0.45 can be expanded in the fractional form as  (3)/(10)+ (3)/(20)and in the decimal form as 0.3 + 0.15.

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Answer:

0.4 + 0.05= 0.45

FRACTION FORM:

4/10+ 5/100= 0.45

Step-by-step explanation:

Hope this helps!! Tell me if I'm wrong! :)

Verify the linear approximation at (0, 0) forf(x, y) = 7x + 4
5y + 1
â 4 + 7x â 20y

Let f(x, y) = 7x + 4 5y + 1 . Then fx(x, y) = ________

Answers

You need to plug in the (0,0) that’s it

Find the (f+g)(x) of f(x)=2x+3 g(x)=x2+x2-7.

Answers

Answer:

2x^2+2x-4

Step-by-step explanation:

thats assuming x2 is x squared

I travelled at 60km/hour and took 2hours for a certain journey.How long would it have taken me if I had travelled at 50km/hour?​

Answers

Answer:

if you would travel 50km/h then the time will be 2.4hours

Step-by-step explanation:

speed=v1=60km/h

time=t1=2h

speed=v2=50km/h

time=t2=?

as we know that

v1×t1=v2×t2

evaluating the expression

(v1×t1)/v2=t2

putting values

(60km/h*2h)/(50km/h)=t2

(120km/h^2)/(50km/h)=t2

2.4hours=t2

i hope this will help you :)

Can you show me how to solve this problem: a. ) 16=4 to the 3rd power x -7

Answers

We assume you mean
\ \ \display{16=4^(3x-7)}
This is solved by writing 16 as a power of 4 and equating exponents.
\ 4^(2)=4^(3x-7)
  2 = 3x - 7 . . . . . equate exponents
  9 = 3x . . . . . add 7
  3 = x . . . . . divide by 3

The solution is x = 3.

In art class students are mixing blue and red paint to make purple paint. Cai mixes 5 cups of blue paint and 6 cups of red paint. Casho mixes 2 cups of blue paint and 3 cups of red paint. Use Cai and Casho’s percent of blue paint to determine whose purple paint will be bluer.

Answers

Answer:

Cai's Would Be Bluer

Step-by-step explanation:

Since 2/5 is 40% and 5/11 is 45% Cai's would be bluer!

Final answer:

Cai's paint will be bluer because she used a higher percentage of blue paint (45.45%) in her mix compared to Casho who used 40% blue paint.

Explanation:

In order to determine whose paint mix will be bluer, we must compare the ratio of blue to red paint in each student's mix. Cai mixes 5 cups of blue and 6 cups of red paint. Casho mixes 2 cups of blue and 3 cups of red paint. We find the percentage of blue paint by dividing the amount of blue paint by the total amount of paint and then multiplying by 100. For Cai, it would be (5 / (5 + 6)) * 100 = 45.45% blue. For Casho, it would be (2 / (2 + 3)) * 100 = 40% blue. Thus, Cai's purple paint will be bluer because it has a higher percentage of blue paint.

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