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nata0808 [166]
3 years ago
9

Chong thinks of a Number adds 10 and then multiplies the number so obtained by 3, and get 42. If the number is n then write an e

quation for this
Mathematics
1 answer:
eimsori [14]3 years ago
6 0

Answer:

The equation for this is: 3(n+10) = 42

Step-by-step explanation:

We have that the number though is n.

Adds 10:

This means that now we have: n + 10

Multiplies by 3:

This means that now we have: 3(n+10)

Gets 42:

This means that: 3(n+10) = 42

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Timm drives at an average speed of 80km per hour for 3 hours and 45 minutes.
notka56 [123]

Answer:

300 km

Step-by-step explanation:

3 hours and 45 minutes = 3\frac{3}{4}

Speed = 80 km per hour.

80 × 3 = 240 km

80 × \frac{3}{4} = 60

240 + 60 = 300

3 0
4 years ago
Help !!!!!!!!!!!!!!!
Ostrovityanka [42]

Answer:

  x = 29

Step-by-step explanation:

Follow the directions: substitute 13 for y in the first equation.

  x + 13 = 42

Subtract 13 from both sides of the equation.

  x +13 -13 = 42 -13

  x = 29

4 0
3 years ago
What is a polynomial function
MAVERICK [17]
It's an expression that consists of variables and coefficients that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponents of variables.

example:

x2 − 4x + 7
6 0
3 years ago
Determine the approximate value of side A.<br>​
Sveta_85 [38]

Answer:

A should be 40 if not sorry

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
PLEASE HELP !!!!!!!!Solve the system of equations using the linear combination method.
vfiekz [6]

Answer:

The solution would be (5, -2)

Step-by-step explanation:

To use this method, start by multiplying the second equation by -1. Then add the two equations together.

9x + 5y = 35

-2x - 5y = 0

------------------

7x = 35

x = 5

Now that we have the value of x, use it to solve either equation for y.

2x + 5y = 0

2(5) + 5y = 0

10 + 5y = 0

5y = -10

y = -2

6 0
4 years ago
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