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3 years ago

10(6m + 7n - 4) I'm not good at these at all PLEASEE HELP!

Mathematics

2 answers:

Alja [10]3 years ago

5 0

Answer:

60m + 70n + 40

marshall27 [118]3 years ago

5 0

The answer is 60m + 70n - 40
For the questions you just multiply all of the numbers in the parentheses: () by the number on the outside

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Over what interval is the function differentiable? Y=3/2(x-1)

jolli1 [7]

Answer-

The interval where the function is diffrentiable is

$[-\infty,1)\ \bigcup\ (1,\infty]$

Solution-

The given expression is,

$y=\dfrac{3}{2(x-1)}$

The function will be differentiable where it is continuous and it will not be differentiable, where the function is not continuous.

The function continuous everywhere except at x = 1, because

$\Rightarrow 2(x-1)=0\\\\\Rightarrow x-1=0\\\\\Rightarrow x=1$

at x = 1, its limit does not exist.

Therefore, apart from x=1, this function is differentiable everywhere. The interval will be

$[-\infty,1)\ \bigcup\ (1,\infty]$

3 0

3 years ago

Steve and Elizabeth decide to become partners in a children’s cooking school. They need $80,000 for the franchise. They invest i

PilotLPTM [1.2K]

Answer:

The share of Steve is $34,285 .71

The share of Elizabeth is $45,714.28

Step-by-step explanation:

The total investment of Steve and Elizabeth in cooking school = $80, 000

The ratio of investment of Steve and Elizabeth = 3: 4

Let us assume the common factor in the ratio is m.

So, the ratio of Steve = 3 m

and the ratio of Steve = 4 m

So, according to the question:

⇒ 3 m + 4 m = 80,000

or, 7 m = 80,000

⇒ m = 80,000 / 7 = 11,428.57

or, m = 11,428.57

⇒ The share of Steve = 3 m = 3 x (11,428.57) = 34,285 .71

⇒ The share of Elizabeth = 4 m = 4 x (11,428.57) = 45,714.28

4 0

3 years ago

A student's cost for last semester at her community college was $2700. She spent $297 of that on books. What percent of las

aniked [119]

Answer:

Answer- 12%

Step-by-step explanation:

5 0

4 years ago

What is are the 2 square roots of 121/49

expeople1 [14]

If you are asking what the square roots of 121 are and what the square roots of 49 are it is:

11^2=121 and
7^2=49

if, however you're asking what the square roots of 121 divided by 49, I don't know. (this sign '/' is commonly used as a division sign so I'd just want to clarify).

7 0

3 years ago

Read 2 more answers

I really need help w this question I WILL GIVE BRAINLIEST

Taya2010 [7]

Answer:

x > -35

Step-by-step explanation:

When Janet got rid of the 4, she added it to -3 instead of subtracting 4.

So, the next step should look like this:

$\frac{x}{5}$ > -7