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3 years ago

What is the solution to this equation? 2x + 3 = x − 4

Mathematics

2 answers:

aivan3 [116]3 years ago

6 0

Answer:

x = −7

Step-by-step explanation:

2x + 3 = x − 4

Subtract 3 from both sides of the equation

2x = x −7

Subtract x from both sides of the equation

x = −7

kondaur [170]3 years ago

6 0

Answer:

X=7

Step-by-step explanation:

Step 1

Having all the

terms on one side of =

Subtract

2 x

from both sides

2 x − 2 x + 3 = 3 x − 2 x − 4

0 + 3 = x − 4

Swap round

x − 4 = 3

Step 2

Have just

on the left of =

Add

to both sides

x − 4 + 4 = 3 + 4

x = 7

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Solve for x. 35x+5=45 Enter your answer in the box.

Serga [27]

35x+5= 45

Subtract 5 on both sides.

35x=40

Divide both sides by 35.

x= 8/7 (simplified)

I hope this helps!
~kaikers

3 0

3 years ago

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A study is under way in Yosemite National Forest to determine that adult height of American pine trees. Specifically, the study

SVETLANKA909090 [29]

Answer:

The 25,000 adult American pine trees in the forest.

Step-by-step explanation:

Consider the provided information.

It is given that the forest contains 25,000 adult American pines. The study involves collecting heights from 250 randomly selected adult American pine trees and analyzing the results.

A population is the set of data which includes all of the elements. If one or more observations are drawn form the population then it called a sample.

Here the population is 25,000 adult American pines.

Thus, the required answer is: The 25,000 adult American pine trees in the forest.

8 0

3 years ago

A godown is 40m long,30m wide and 9m high. How many cuboidal boxes can be stored in it, if the dimension of each box is 2mx1.2x4

sergiy2304 [10]

Answer: There are 10000 cuboidal boxes can be stored in the godown.

Step-by-step explanation:

Since we have given that

Dimensions of godown will be

40 m, 30 m, 9 m .

Dimensions of cuboidal boxes will be

2 m, 1.2 m, 45 cm

As we know Number of cuboidal boxes is given by

$\frac{\text{ Volume of godown }}{\text{ Volume of cuboidal box}}\\\\=\frac{40\times 30\times 9}{2\times 1.2\times 0.45}\\\\=10000$

Hence, there are 10000 cuboidal boxes can be stored in the godown.

4 0

3 years ago

Plz help.....................

scoray [572]

X^2 - 7x + 12
factors of 12 sum of the factors
1 * 12 13
2 * 6 8
3 * 4 7
-1 * -12 -13
-2 * -6 -8
-3 * -4 -7
(x - 3)(x - 4)
The second option

4 0

4 years ago

Help please!! i don’t understand this one!

12345 [234]

Answer:

C, D

Step-by-step explanation:

This equation can be solved any of several ways. One that doesn't require much thought is using the quadratic formula.

For ax² +bx +c = 0, the solutions are ...

$x=\dfrac{-b\pm\sqrt{b^2-4ac}}{2a}$

In the given equation, a=2, b=11, c=5, so this becomes ...

$x=\dfrac{-11\pm\sqrt{11^2-4\cdot2\cdot5}}{2\cdot2}=\dfrac{-11\pm\sqrt{81}}{4}\\\\x=\dfrac{-11\pm9}{4}=\left\{-\dfrac{20}{4},-\dfrac{2}{4}\right\}=\{-5,-\frac{1}{2}\}$

The solutions are ...

C. x = -5

D. x = -1/2

_____

My personal favorite is using a graphing calculator. The solutions are the x-intercepts of the expression on the left. That is, where its value is zero, as the equation says.

5 0

3 years ago