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3 years ago

3x+4=25 please this will help alot

Mathematics

2 answers:

Aleks [24]3 years ago

7 0

Answer:

x = 7

Step-by-step explanation:

3x + 4 = 25

-4 -4

3x = 21

divide by 3

x = 7

Plz mark as brainliest if it helps! Have a good day!!!

-Lil G

Len [333]3 years ago

7 0

$\pink{\boxed{\rm Answer + Explain}}$

$\rm 3x + 4 = 25$

$\rm 3x = 25 - 4$

$\rm 3x = 21$

$\rm x = \frac{21}{3}$

$\blue{\boxed{ \rm x = 7}}$

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3 years ago

How do you write (-2,-4),(-3,-3) into slope intercept form

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Answer- $y=−3x+9$

Step-by-step explanation:

First, we will write and equation in point-slope form and then convert to slope-intercept form.

To use the point-slope form we must first determine the slope.

The slope can be found by using the formula : $m=y2−y1x2−x1$

Where $m$ is the slope and $(x1,y1) and (x2,y2$ ) are the two points on the line.

Substituting the values from the points in the problem gives: $m=3−−32−4m=3+32−4m=6−2=−3$

We can now use this calculated slope and either point to write the equation in point-slope form.

The point-slope formula states: $(y−y1)=m(x−x1)$

Where $m$ is the slope and $(x1y1)$ is a point the line passes through.

Again, substituting gives: $(y−−3)=−3(x−4) (y+3)=−3(x−4)$ We can now convert this to slope-intercept form.

The slope-intercept form of a linear equation is: $y=mx+b$

Where $m$ is the slope and $b$ is the y-intercept value.

We can solve our equation for $y:$

$(y+3)=−3(x−4) y+3=(−3×x)−(−3×4)y+3=−3x−(−12)y+3=−3x+12y+3−3=−3x+12−3y+0=−3x+9y=−3x+9$

This took me so long to type lol, hope this helps you and have a great day noon or night! <3 ❤️

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2 years ago

Tcecarenko [31]

Answer:

It is not possible for the student to receive an A grade in the class.

It is possible for the student to receive a B grade in the class.

Step-by-step explanation:

We are given that in the DBE 122 class, there are 350 possible points. These points come from 5 homework sets that are worth 10 points each and 3 exams that are worth 100 points each.

A student has received homework scores of 7, 8, 7, 5, and 8, and the first two exam scores are 81 and 80.

Firstly, we will calculate how many points have been scored by the student.

Number of possible points = 350

The points scored by the student in homework = 7 + 8 + 7 + 5 + 8 = 35 points.

The scores of the student on the two exams = 81 + 80 = 161 points

So, the total points scored by the students = 35 + 161 = 196 points.

As it is given in the question that if the grade percentage is 0.9 or higher then the student will get an A, i.e;

If the total possible points are 350 points; $90\% \text{ of } 350 = \frac{90}{100}\times 350 = 315 \text{ points}$

This means that the student must have to score 315 points to get an A grade.

Till the second exam, the total points scored by the students are 196 points. If the student scored full 100 marks in the third exam, then the total points scored by the student will be = 196 + 100 = 296 points.

Since 296 < 315, this means that it is not possible for the student to receive an A in the class.

Also, it is given in the question that if the grade percentage is between 0.8 and 0.9 the student will get a B, i.e, the student must obtain a minimum of 80% to get B grade.

If the total possible points are 350 points; $80\% \text{ of } 350 = \frac{80}{100}\times 350 = 280 \text{ points}$

This means that the student must have to score a minimum of 280 points to get a B grade.

Since 296 > 280, this means that it is possible for the student to receive a B grade in the class.

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3 years ago

A solid has 14 faces and 12 vertices. How many edges does the solid have? A. 18 edges B. 20 edges C. 22 edges D. 24 edges

sladkih [1.3K]

Answer: D 24

Step-by-step explanation:

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3 years ago

Anybody want to role play ???

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Answer:

Thats smarttt

Step-by-step explanation:

You phrased it so it would get pass the brainly bots system, kudos to you!

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3 years ago

3x+4=25 please this will help alot​

3x+4=25 please this will help alot