What is the algebraic expression for "the difference between seven times a number and three times that number"?

Mathematics

2 answers:

inna [77]3 years ago

8 0

Answer:

7x-3x = 4x?

I think

Bess [88]3 years ago

3 0

7x-3x

i dont really know

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Find the value of the variable and MN if N is between M and Q. Round to the nearest hundredth if necessary.

Rudiy27

Answer:
MN = 4 units

Explanation:
1- getting the value of m:
We are given that:
NQ = 4m and NQ = 12
This means that:
12 = 4m
$\frac{4m}{4} = \frac{12}{4}$
m = 3

2- getting MQ:
We are given that:
MQ = 5m + 1
We have calculated that:
m = 3
Therefore:
MQ = 5(3) + 1 = 15 + 1 = 16 units

3- getting MN:
We are given that point N is located somewhere between points M and Q.
This means that:
line MQ can be divided into two portions: MN and NQ
This also means that:
length of MQ = length of MN + length of NQ

We have calculated that:
MQ = 16 units
We are given that:
NQ = 12 units
Therefore:
16 = length of MN + 12
length of MN = 16 - 12
length of MN = 4 units

Hope this helps :)

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3 years ago

Two planes that have a line in common are called

natima [27]

Answer:

they would be intersecting lines

Step-by-step explanation:

brainly crown apricated if I'm right

7 0

3 years ago

How to justify a/b x b/c = a/c?

jeyben [28]

A/b times b/c is = ab/bc
which can be written as a/c times b/b
anything over itself is 1 so b/b is one
a/b times b/c = a/c

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3 years ago

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Find the real solutions of the equation by graphing. x^2 + 2x + 2 = 0

Furkat [3]

for example, (1;5)
-----------------------------

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3 years ago

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20 points and brainlist if correct!

weeeeeb [17]

Answer:

The Commutative property states that numbers can be multiplied in any order

Step-by-step explanation:

look at the equation 4x2.36x.25. If you write the equation differently as 4x.25x2.36, the equation becomes easier to solve. Why? As you can see 4 and .25 (aka 1/4) 4 and 1?4 are reciprocals and anything multiplied by the reciprocal is 1. so 1x 2.36 is 2.36. The Communicative Property just helps to see those patterns and connections

hope this helps ;)

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2 years ago