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3 years ago

A number increased by 9 is 13

Mathematics

1 answer:

Alborosie3 years ago

6 0

Answer:

Step-by-step explanation:

To find the number you have to reverse the equation

Let us call the number "x"

x + 9 = 13

So to find x we flip the equation

13 - 9 = x

Solve it

4 = x

So the missing number is 4

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You are given the dollar value of a product in 2015 and the rate at which the value of the product is expected to change during

Charra [1.4K]

Answer:

V = $3.50t + $90.5....

Step-by-step explanation:

V(t) is a function of t that expresses the value in year 2000+t.

We know that the increase is $3.50 times t.

So,

V(t) = $3.50t + c

where c is the constant.

V(15) = $3.50 (15) + c = $143 [t=15 as mentioned in the question]

and therefore

c = $143 - $3.50 (15)

c= $143 - $52.50

c= $90.5

Now we got the value of c. We can write the equation as

V = $3.50t + $90.5....

4 0

3 years ago

Jeff writes comic strips for a local newspaper. The number of comic strips he creates is represented by the function f(x) = 3x,

Andrei [34K]

If he does three hours, its 9 strips, for four, its 12, six is 18, seven is 21, and nine is 27

7 0

3 years ago

Suppose a sample of 256 was taken from a population with a standard deviation of 64 centimeters. What is the margin of error for

Ganezh [65]

I think the answer is b

8 0

3 years ago

Read 2 more answers

The weekly salary of a store manager includes a $30 bonus plus the number of hours the manager works multiplied by the managers

gizmo_the_mogwai [7]

Yes. The situation is defined by a linear function.

<u>Solution:</u>

Given, The weekly salary of a store manager includes a $30 bonus plus the number of hours the manager works multiplied by the managers earnings per hour.

Is this situation defined by a linear function?

Yes, the above given situation is defined by a linear function.

Now, let us see the linear equation for above situation

Let the number of hours worked by manager be "x", and cost per hour be "c" and total salary be "y"

Then, total salary is given as,

Total salary = $ 30 bonus + number of hours worked $\times$ cost per hour

$\rightarrow \mathrm{y}=30+\mathrm{x} \times \mathrm{c}\\\\ \rightarrow \mathrm{y}=\mathrm{c} \mathrm{x}+30$

Above equation is a linear equation as "c" is constant ( cost per hour )

Hence, the given situation can be defined by linear function.

5 0

3 years ago

Okay now using distributive property write 2(4x-9) without parenthesis

riadik2000 [5.3K]

2(4x - 9) =
2 * 4x - 2 * 9 =
8x - 18

Hope this helps!!
~Kiwi

6 0

3 years ago