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3 years ago

Evaluate 2x + 1 when x = 7.

Mathematics

2 answers:

Tatiana [17]3 years ago

8 0

Answer:

Step-by-step explanation:

Leya [2.2K]3 years ago

4 0

Step-by-step explanation:

When x = 7

2x + 1

= 2 * 7 + 1

= 14 + 1

= 15

Hope it will help :)

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If i work in a week 2 days cleaning and i will work 4 hours in a day and in 1 hour is 8$ how much will it be in a year

bagirrra123 [75]

Answer:

$3072

Step-by-step explanation:

It is given that :

I work for 4 hours everyday, working 2 days a week.

And in 1 hour , I get $8.

Therefore,

1 hour = $8

4 hours = 4 x 8

= $32

So, in 1 day working for 4 hours, I get $32.

∴ Working 2 days = 32 x 2

= $64

In 1 month, there are 4 weeks

So, in 4 weeks (or 1 month), I work for = 4 x 2

= 8 days

Therefore, in 8 days, I get = 8 x 32

= $256

Now there are 12 months in a year.

So, in 12 months , I will get = 12 x 256

= $3072

Therefore, in 1 year , I will get $3072.

6 0

3 years ago

The volume of one can is 300 cubic centimeters. What is the radius of this can? Round to the nearest hundredth.

Sav [38]

Volume of cylinder

$\pi {r}^{2} h$

Volume of the can = 300

$300 = \pi {r}^{2} h$

$300 = \frac{22}{7} {r}^{2} h$

$300 \times \frac{7}{22} = {r}^{2} h$

$150 \times \frac{7}{11} = {r}^{2} h$

$95.45 = { r}^{2} h$

$\frac{95.45}{h} = {r}^{2}$

$\sqrt{ \frac{95.45}{h} } = r$

$\frac{ \sqrt{95.45} }{ \sqrt{h} } = r$

3 0

3 years ago

8. Identify the mapping diagram that represents the relation and determine whether the relation is

Over [174]

Answer:

Well, you didn't give a picture of the available mapping diagrams, so I can't tell you that. However, I CAN tell you that the relation is not a function.

Step-by-step explanation:

A function occurs when each input only has one output. For example if the input is 5, it can only give 1 y-value out. It cannot give 2,3,4...etc values. This relation is not a function because -5 maps to both -4 and 3. That's one input to two outputs, which breaks the rules of a function.

3 0

3 years ago

Evaluate each expression. Enter the correct answers in the boxes. (60−6)×(13)3+27÷3= ( 60 − 6 ) × ( 1 3 ) 3 + 27 ÷ 3 = 82÷4×(2+3

11Alexandr11 [23.1K]

Answer:

2115

Explanation:

To evaluate the expression (60−6)×(13)3+27÷3 we use BODMAS

BODMAS is an acronym/rule in mathematics that dictates the order we should solve mathematical operations such as the above.

BODMAS stands for bracket first, order or of, division, multiplication, addition and then lastly subtraction

To solve the expression using BODMAS, we solve the brackets first

(60−6)×(13)3+27÷3 =54×39+27/3