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3 years ago

To Solve each equation tell what you will do first to both sides 2x + 7 = 13

Mathematics

2 answers:

Digiron [165]3 years ago

6 0

Answer:

First subtract 7 from each side of the equation

Step-by-step explanation:

2x+7 = 13

First subtract 7 from each side of the equation

2x+7 -7 = 13-7

2x = 6

Next divide each side by 2

2x/2 = 6/2

x=3

ziro4ka [17]3 years ago

4 0

Answer:

X=3

The answer should have a positive sign.

Step-by-step explanation:

First, you subtract by 7 both sides of equation.

2x+7-7=13-7

Simplify.

13-7=6

2x=6

Then, divide by 2 both sides of equation.

2x/2=6/2

Simplify, to find the answer.

6/2=3

X=3 is the correct answer.

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Adrian exercised three days during the past week. He exercised 58 minutes and 45 seconds during the

aniked [119]

Answer:

2h 1' 1"

Step-by-step explanation:

1h = 1 hora

1' = 1 minute

1" = 1 secind

The sum of the three days is:

58' 45"

+ 40' 40"

20' 36"

= 118' 121"

118' 121" = 118' + 121"

1' = 60"

121" = 120" + 1" = (120/60) + 1 = 2' + 1"

Then:

118' + 121" = 118' + 2' ´+ 1" = 120' + 1"

1 h = 60'

(120/60) + 1 = 2h + 1'

then:

118' + 121" = 2h + 1' + 1"

= 2h 1' 1"

3 0

2 years ago

If the discriminant is positive there is exactly one real solution.

Len [333]

It is in form
0=ax^2+bx+c
0=-3x^2-2x+6
a=-3
b=-2
c=6

so
x=
x=
x=
x=
x=
x=
x= or

7 0

3 years ago

A forest covers 51,000 acres. A survey finds that 0.6% of the forest is old-growth trees. How many acres of old-growth trees

RSB [31]

306. A thank you or brainliest is always appreciated!

3 0

3 years ago

-5+x over 22=-1 solve for x

r-ruslan [8.4K]

-5 + x/22 = -1

+ 5 for both side

x
--- = 4
22

multiply by 4

x = 22(4)

x = 88

5 0

3 years ago

A boat traveled 37 miles in 2 hours. At this rate, how many miles will the boat travel in

Inessa [10]

Answer:

i. The boat will travel 18.5 miles in one hour

ii. The boat will travel 9.25 miles in half an hour

iii. The boat will travel 27.75 miles in one and a half hours

Explanation:

We are given that the boat travel 37 miles in 2 hours

To get the miles traveled, we can simply use cross multiplication

i. Miles traveled by the boat in one hour:

37 miles .....................> 2 hours

x miles ........................> 1 hour

$x = \frac{37*1}{2}=18.5$ miles

ii. Miles traveled in half an hour:

37 miles .....................> 2 hours

x miles ........................> 0.5 hour

$x = \frac{37*0.5}{2}=9.25$ miles

iii. Miles traveled in an hour and a half:

37 miles .....................> 2 hours

x miles ........................> 1.5 hour

$x = \frac{37*1.5}{2}=27.75$ miles

Hope this helps :)

8 0

4 years ago