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katrin2010 [14]
2 years ago
11

Answer pleaseeee??? Thanks

Mathematics
2 answers:
inessss [21]2 years ago
5 0

Answer:

True!

Step-by-step explanation:

3(10) - 9

30 - 9

21

algol132 years ago
3 0

Answer: false becuase you would add 9 to both sides simply 3x=19 then 19/3 then if u want to check it just plug 19/3 in the equation then cancel 3 simply 19-9.

Step-by-step explanation: i'm not so sure but hope it helps .

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I need help ASAP. I'm not good with math.
bonufazy [111]

Given:

The increase in pressure P is the linear function of the depth d.

P(d)=0.445d+14.7

The cost of dinner is $300 and $10 per students.

To find:

The initial value and rate of change and their interpretation.

Find the cost function C where n is the number of students.

Solution:

The slope intercept form of a linear function is

f(x)=mx+b          ...(i)

where, m is rate of change and b is y-intercept or initial value.

We have,

P(d)=0.445d+14.7        ...(ii)

From (i) and (ii), we get

m=0.445,b=14.7

The initial value is 14.7. It means, the pressure at sea level is 14.7 pounds psi.

Rate of change is 0.445. It means, the pressure is increasing by 0.445 pounds psi for every feet.

The cost of dinner is $300 and $10 per students.

Let C(n) be the total cost for dinner and n be the number of students.

Fixed cost = $300

Additional cost for 1 student = $10

Additional cost for n student = $10n

Now,

Total cost = Fixed cost + Additional cost

C(n)=300+10n

Therefore, the required cost function is C(n)=300+10n.

8 0
2 years ago
On a map, 2 inches represents 300 miles. How many inches would there be between two cities that are 1,200 miles apart?
solniwko [45]

Answer:

8

Step-by-step Explanation:

Step 1. Divide 1200 by 300:

1200 ÷ 300 = 4

Step 2. Multiply 4 by 2:

4 * 2 = 8

6 0
3 years ago
YOOO YOOO BADDIES ANSWER THESE QUESTION NOWWW Anise wants to have longer hair than her sister. Her sister's hair is 2.25 feet lo
raketka [301]

Answer:

B

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Please someone help me out I don't understand ;-;
Nesterboy [21]

Answer:

Yes

Step-by-step explanation:

90 minutes each - 360 ÷ 4

7 0
3 years ago
Find the value of x. write your answer in simplest radical form
BartSMP [9]

Answer:

<h2>x = 4 \sqrt{2}</h2>

Step-by-step explanation:

To find the value of x we can use either sine or cosine

Using cosine we have

<h3>\cos(\theta)  =  \frac{adjacent}{hypotenuse}</h3>

From the question

x is the hypotenuse

4 is the adjacent

We have

<h3>\cos45=  \frac{4}{x}  \\ x \cos45 = 4 \\ x =  \frac{4}{ \cos(45) }</h3>

We have the final answer as

<h3>x = 4 \sqrt{2}</h3>

Hope this helps you

8 0
3 years ago
Read 2 more answers
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