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Rasek [7]
3 years ago
9

Tim has a box of 15Markers he gives three markers to four friends What exppresion can show the number of marker tim has left​

Mathematics
1 answer:
Elodia [21]3 years ago
7 0

Answer:

15 - 3 (expression)

15 - 3 = x (equation)

Step-by-step explanation:

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Which first step for solving the given system using substitution results in an equation without fractions? Solve for x in the fi
lianna [129]

Answer:

solve for x in the second equation is correct

Step-by-step explanation:

Here is the complete question

Which first step for solving the given system using substitution results in an equation without fractions?

(2x+6y=7

(6x + 18y = 24.... 2

Solve for x in the first equation,

Solve for y in the first equation,

Solve for x in the second equation

The best equation to she will be equation 2 since all the coefficients are end numbers

Let us make x t subject f the formula from equation 2;

From 2: 6x+18y = 24

Subtract 18y from both sides

6x+18y-18y = 24-18y

6x = 24-18y

Divide through by 6

6x/6 = 24/6 - 18y/6

x = 4-3y.

You can see that the resulting expression of x is not a fraction. Hence solve for x in the second equation is correct

5 0
3 years ago
Read 2 more answers
Sudhir bought an almirah for RS 13600 and spent RS 400 on its transportation . He sold it for RS 16800 . find the his gain perce
oee [108]

Answer:

His gain percent is 20%

Step-by-step explanation:

In this question, we want to find the percentage gain of the business.

We need the following parameters;

The cost price which is the sum of the amount she bought the goods + the amount spent on transport

Using the values we have in the question;

The cost price will be;

13,600 + 400 = Rs 14,000

The selling price = Rs 16,800

Mathematically the percentage gain will be;

% gain = (selling price- cost price)/selling price * 100%

% gain = (16,800-14,000)/14,000 * 100/1

% gain = 2800/14,000 * 100/1 = 1/5 * 100/1 = 20%

7 0
3 years ago
Answer this for 15 points and Brainliest
Alenkasestr [34]

Answer:

y=3x+18

Step-by-step explanation:

Since slope-intercept form is y=mx+b, we first need to find the slope.

m=y2-y1/x2-x1

m=0-(-9)/-6-(-9)

m=9/3=3

Next we need to find b, or the y-intercept

to do that we plug in numbers to what we already have.

y=3x+b

0=-18+b

b=18

Now we put it all together.

<h3>y=3x+18</h3>

4 0
3 years ago
What is the value of n in the equation –1/2(2n + 4) + 6 = –9 + 4(2n + 1)?
ioda

Answer:

<h2>n = 1</h2>

Step-by-step explanation:

-\dfrac{1}{2}(2n-4)+6=-9+4(2n+1)\qquad\text{use the distributive property}\\\\\left(-\dfrac{1}{2}\right)(2n)+\left(-\dfrac{1}{2}\right)(-4)+6=-9+(4)(2n)+(4)(1)\\\\-n-2+6=-9+8n+4\qquad\text{combine like terms}\\\\-n+(-2+6)=8n+(-9+4)\\\\-n+4=8n-5\qquad\text{subtract 4 from both sides}\\\\-n=8n-9\qquad\text{subtract}\ 8n\ \text{from both sides}\\\\-9n=-9\qquad\text{divide both sides by (-9)}\\\\n=1

7 0
3 years ago
A price for pineapples is $5 for two pineapples the price for pineapple is $8 for four pineapples which store is offering the lo
Butoxors [25]

Answer:

The first store

Step-by-step explanation:

Given data

Let us find the unit cost on each sale

A price for pineapples is $5 for two pineapples

Unit cost per pineapple

=5/2

=$2.5 per pineapple

price for pineapple is $8 for four pineapples

Unit cost

=8/4

=$2 per pineapple

Hence the first store offers the lowest price per pineapple $2.5

6 0
3 years ago
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