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ZanzabumX [31]
3 years ago
14

QUICK PLEASE!!!

Mathematics
2 answers:
Delicious77 [7]3 years ago
8 0

Answer:

im just going to copy and paste the correct ones and their answers:

<u>Problem: The sum of twice a number and −6 is 9 more than the opposite of the number. Find the number.</u>

<u>Equation: 2n − 6 = 9 − n</u>

<em>n = 5</em>

<u>Problem: Anna drove 450 km in 6 hours. Find her rate of travel.</u>

<u>Equation: 450r = 6</u>

<em>r = 75</em>

<u>Problem: Three times a number increased by 44 is the same as the opposite of the number. Find the number.</u>

<u>Equation: 3n + 44 = −n</u>

<em>n = -11</em>

<em />

<u />

omeli [17]3 years ago
4 0

Answer:

a and c

Step-by-step explanation:

a.2n-6=9-n

2n+n=9+6

3n=15

n=\frac{15}{3}=5

b.Rate=\frac{distance}{time}

Distance=450 km

Time=6 hours

Rate=\frac{450}{6}=75 Km/h

But from given equation

450r=6

r=\frac{6}{450}

Hence, it is wrong.

c.3n+44=-n

3n+n=-44

4n=-44

n=\frac{-44}{4}=-11

d.Let number of quarter=x

Number of dimes=5 x

According to question

x+5x=$5.25

But given equation

x+10x=$5.25

This is wrong.

Hence, option a and c are true.

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5 0
3 years ago
Which number line shows the solution set for |a|= 6
lisabon 2012 [21]

Answer:

O the first number line

Step-by-step explanation:

|a| = 6

|?| = absolute value

to find absolute value of a number, it must be a opposite number from the origina number

|a| = 6

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6 = 6  

7 0
3 years ago
Read 2 more answers
a line segment of length 84cm has been divided into two parts in the ratio 4:3 find the length of each part​
Tanzania [10]

Answer:

48 and 36

Step-by-step explanation:

Let the two numbers be 4x and 3x

or4x+3x=84

or, 7x=84

or, x=84÷7

or, x=12

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4x=12×4

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3x=3×12

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5 0
3 years ago
What is the slope and the y-intercept.
storchak [24]

Answer:

slope = 1

y-intercept = 5

Step-by-step explanation:

change in y-values = 1

change in x-values = 1

slope = 1/1 or 1

to find the y-intercept ('b'), select an ordered pair:  (1, 6)

use the slope-intercept formula and solve for 'b':

6 = 1(1) + b

6 = 1 + b

5 = b

slope = 1

y-intercept = 5

5 0
2 years ago
Somebody please help me on this?! What is the correct postulate or theorem for this one..
IRINA_888 [86]

Answer:

Segment Addition Postulate

Step-by-step explanation:

In geometry, the Segment Addition Postulate states that given 2 points A and C(in this case S and O), a third point B(in this case R) lies on the line segment AC if and only if the distances between the points satisfy the equation AB + BC = AC.

Meaning for R to lie on the line SO;

SR + RO must be equal to SO

7 0
3 years ago
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