Solve for b

Solve for b : -3b+2.5=4

Solve For BSolve For B : -3b+2.5=4

Answers

Answer 1

Answer: -0.5

Step-by-step explanation:

-3b = 4-2.5

-3b = 1.5

(-3b)/-3 = 1.5/-3

b = -0.5

Answer 2

Answer:

should be - 0.5

Step-by-step explanation:

- 3b + 2.5 = 4

1.Turn the equation around

1. -3b = -2.5 + 4.

1. The reason why you turn the 2.5 into a negative is because you basically doing the oppisite if that makes sence.

2. Add -2.5 + 4

2. -2.5 + 4 = 1.5

2. I just added.

3. Plug 1.5 into the equation. Like so

3. -3b = 1.5

3. I just replaced -2.4 + 4 with the answer

4. Divied -3b = 1.5

4. -3b/-3b = 1.5/-3b = -0.5

4. What you do to one side you have to do to the other so -3b/-3b is 0 or it just is not there anymore next you take -3b and divide it by 1.5 and get - 0.5 BAM.  

5. Plug -0.5 in for b.

5. -3(-0.5) + 2.5 = 4  


Related Questions

d: 11
A food company is designing boxes for several products. Each box is a rectangular prism.
15
The company makes a single serving cereal box that contains 1.2 ounces of cereal. They plan to make an extra large box for school
cafeterias. The extra large box will be a dilation of the single serving box using a scale factor of 4. How many ounces of cereal will
the extra large box contain?
I need step by step

Answers

dude it keeps saying incorrect when i put the answer bro it says it again

How many ounces of cereal will the extra large box contain is 76.8 ounces.

Number of ounces of cereal?

Using this formula

Number of ounces of cereal=Number of ounces×Scale factor

Let plug in the formula

Number of ounces of cereal=1.2×4×4×4

Number of ounces of cereal=1.2×64

Number of ounces of cereal=76.8 ounces

Therefore how many ounces of cereal will the extra large box contain is 76.8 ounces.

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Explain how you would determine the slope and y-intercept of a line
when given a table, graph and an equation.
I KISS YOUR TOES IF YOU HELP ME

Answers

Answer:

slope is m= y_2-y_1/x_2-x_1 and the y-intercept is where the line crosses over the x-axis

Step-by-step explanation:

fill in the points and do the equation m= rise(y points)/ run(x points)

m=slope

(x_1, y_1) =coordinates of first point in the line

(x_2, y_2)=coordinates of second point in the line

Determine the mean, median, mode, and range for the data set:
5, 6, 12, 7, 8, 10, 8
Mean-
Median-
Mode-
Range-

That’s the question

Answers

Answer:

Step-by-step explanation:

Mean (Average): 8

Median (Middle): 8

Mode (Most Common): 8

Range (Biggest - Smallest): 7

–19w + 11 = –17w − 19
w=?

Answers

Answer:

W = 15. I hope this helped.

Step-by-step explanation:

Steps:

1.Add 19w to both sides.

11=−17w−19+19w

2.Simplify  -17w-19+19w to  2w-19

11=2w−19

3.Add 19 to both sides.

11+19=2w

4. Simplify  11+19  to  30.

30=2w

5.Divide both sides by 2.

30/2 = w

6.Simplify 30/2 to  15.

15=w

7.Switch sides.

w=15

The ratio of boys to girls in a class is 5:7 There are 36 students in the class. How many more girls than boys?

Answers

Answer:

The answer is 6.

Step-by-step explanation:

This is how I do it, there are other ways too but,

add up the ratio 5+7=12

36 (students total) divided by 12 = 3

find the difference between the ratio, which is 2.

multiply 2 by 3 and you get 6.

Use the regression calculator to compare the teams’ number of runs with their number of wins.

A 2-column table with 9 rows. Column 1 is labeled R with entries 808, 768, 655, 684, 637, 619, 613, 609, 563. Column 2 is labeled W with entries 93, 94, 66, 81, 86, 75, 61, 69, 55.

What is the y-intercept of the trend line, to the nearest hundredth?

Answers

Answer:

-23.21

there should be a two part for this and the answer would be D y= 0.15x - 23.21

Step-by-step explanation:

The line of best will be y = 0.15x - 23.21  and the y-intercept is -23.21 after applying the formula.

What is the line of best fit?

A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.

[tex]\rm m = \dfrac{n\sum xy-\sum x \sum y}{n\sum x^2 - (\sum x)^2} \\\\\\\\\\rm c = \dfrac{\sum y -m \sum x}{n}[/tex]

The data is given:

R(x)     W(y)

808     93

768     94

655     66

684     81

637     86

619     75

613     61

609     69

563     55

The line of best fit can be written as:

y = mx + c

Here m is the slope of the line best fit and c is the y-intercept

Putting the values in the formula we get:

m = 0.15

c = -23.21

The line of best fit is:

y = 0.15x - 23.21

Thus, the line of best will be y = 0.15x - 23.21  and the y-intercept is -23.21 after applying the formula.

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Can someone please answer these questions ASAP!!

Answers

1. 31 2. 56ft 3. 16 4. 7 5. 20ft

What is the chance you'll roll this FNC (fair # cube) and it will land on a number less than 5?
A. 4 in 6 chance
B. 3 in 6 chance
C. 1 in 6 chance
D. 5 in 6 chance

Answers

You’re answer is A because there are only 4 numbers below 5 so it’ll be 4/7

What is two thing you like about math

Answers

Answer:

1. Math encourages curiosity and questions.

2. Math can save you money. ...

A 12 foot ladder is leaning against a house. The bottom of the ladder is 3 ft from
the house. How high does the top of the ladder reach? Round to the nearest
tenth.

Answers

Answer:

h = 11.61 foot

Step-by-step explanation:

Given that,

The length of a ladder, l = 12 foot

The bottom of the ladder is 3 ft from  the house.

We need to find how high does the top of the ladder reach. Let it is h. The length of the ladder will be the hypotenuse. 3 ft will be the base. So,

[tex]12^2=3^2+h^2\\\\h^2=144-9\\\\h=11.61\ \text{foot}[/tex]

So, the top of the ladder is at a height of [tex]11.61\ \text{foot}[/tex].

Pls help me!!

A circular running track is
1/8
mile long. Elena runs on this track, completing each lap in
1/24
of an hour.
What is Elena's running speed, in miles per hour?

Answers

Answer:

It is 5mmxb3m

Step-by-step explanation:

It is what it is

hola please help i’ll give brainliest but please answer correctly

Answers

Answer:

Step-by-step explanation: 1) 14.5 bc

We have the equation:

43.5 ÷ 3 = 14.500

Calculated to 3 decimal places.

2) They are all the same because they are the same numbers but in different places.

i hope this helps! =3

I NEED HELP ASAP!!! 100 POINTS
If 0 < f ≤ 90 and cos(22f − 1) = sin(7f + 4), what is the value of f?
f=3
f=4
f=5
f=6

Answers

Answer:

A

Step-by-step explanation:

We are given:

[tex]\cos(22f-1)=\sin(7f+4)[/tex]

Recall the co-function identity:

[tex]\sin(\theta)=\cos(90-\theta)[/tex]

Let θ = 7f + 4. So:

[tex]\sin(7f+4)=\cos(90-(7f+4))[/tex]

Substitute:

[tex]\cos(22f-1)=\cos(90-(7f+4))[/tex]

Remove the cosine:

[tex]\displaystyle 22f-1=90-(7f+4)[/tex]

Distribute:

[tex]22f-1=90-7f-4[/tex]

Subtract:

[tex]22f-1=-7f+86[/tex]

Add 7f and 1 to both sides:

[tex]29f=87[/tex]

Therefore:

[tex]f=3[/tex]

HELP ASAP 40 POINTS

What is the equation for the nth term of the sequence
And what is the 52nd term of the sequence. -8,-12,-16

Answers

Given:

The sequence is -8, -12, -16.

To find:

The nth and 52th term  of the given sequence.

Solution:

We have,

-8, -12, -16

It is an AP because the difference between consecutive terms are equal. Here, first term is -8 and the common difference is

[tex]r=a_2-a_1[/tex]

[tex]r=-12-(-8)[/tex]

[tex]r=-12+8[/tex]

[tex]r=-4[/tex]

The nth term of an AP is

[tex]a_n=a+(n-1)d[/tex]

Where, a is first term and d is common difference.

Putting a=-8 and d=-4, we get

[tex]a_n=-8+(n-1)(-4)[/tex]

[tex]a_n=-8-4n+4[/tex]

[tex]a_n=-4-4n[/tex]

Putting n=52, we get

[tex]a_{52}=-4-4(52)[/tex]

[tex]a_{52}=-4-208[/tex]

[tex]a_{52}=-212[/tex]

Therefore, the equation for the nth term of the given sequence is [tex]a_n=-4-4n[/tex] and the 52nd term of the sequence is -212.

Please help I have 2 minutes!

Answers

Answer:

I think y= -3x+2 ? not sure

Step-by-step explanation:

Answer:

6 < 2+1= 3F

Step-by-step explanation:

First, we know that the x is going to the right

1 up, 2 down.

If you go down 6 and go back up 1 we will have the equation 6 < 2+1=3F

You can also use Desmos Graphing Chart to help you!

-6 = 1+3 < 4

Hope this helps!

Mark as Brainllest if it helped you!

I need help finding out the area of this shape plz help me.​

Answers

Answer:

hi

Step-by-step explanation:

glizzy

Answer:

Step-by-step explanation:

Area = l x w

i dont know if you are trying to find the area of the whole shape but the area of the shape all together is 25.6

n + 5 = n +7 Find a value of n that makes the equation true.

Answers

Answer:

This equation has no solution.

Step-by-step explanation:

n should equal some value that makes the statement true, and there is none. To prove this, solve for n and you'll get a nonsensical answer.

n + 5 = n + 7

n = n + 2

0 = 2 ?

In city W, the average cost for a gym membership is given by the equation y = 34.99x +49, where y is the total cost, in dollars, for x months of membership. What is the meaning of the y-value when x = 1? *

Answers

The fee at the beginning of the membership.
If x = 1,
34.99(1) + 49 = y
34.99 + 49 = y
83.99 = y

please I am struggling really bad help me

Answers

A I’m pretty sure that’s the answer

HELP “The vertical supports in this truss bridge are built so that
AABO=AOCD. Which of the following statements
is NOT true?”

Answers

Answer:

The statement that is not true is;

c) m∠ABO = m∠ODC

Step-by-step explanation:

With the assumption that the lengths AO, and OD are equal, we have that in ΔABO and ΔOCD, the following sides are corresponding sides;

Segment AO on ΔABO is a corresponding side to segment OD on ΔOCD

Vertices B and C on ΔABO and ΔOCD are corresponding vertices

Therefore;

Segments AB and OB on ΔABO are corresponding sides to segments OC and OD on ΔOCD respectively

Therefore, ∠ABO on ΔABO is the corresponding angle to ∠OCD on ΔOCD

Given that ΔABO ≅ ΔOCD, we have that ∠ABO ≅ ∠OCD

Therefore;

m∠ABO = m∠OCD by definition of congruency

Answer:

D

Step-by-step explanation:

A scientist is performing a study on mosquitoes. She collects water with mosquito larvae and places it in an enclosed container in her lab. The scientist uses data from the study to create the function, M(t)=-3t^2+57t-144, where t is the number of days in the study.

Part A: Which equivalent form of M(t) reveals when the mosquitoes first appeared in the container and when there were no more mosquitoes in the container?

Part B: How long were there mosquitoes in the container?
Please show the work love yaa.

Answers

Answer:

M(t) = -3 (t - 16) (t - 3)

Step-by-step explanation: Assuming you are working on the practice book - section 5: quadratic equations and functions than this is the correct answer to your question. Although there is another question below the on you have asked on in the actual textbook so if you need help on that just ask me in the comments below.

please help i’m sorry!!! 15 points again!

Answers

Answer:

Guess I'll agree with the other person.

Step-by-step explanation:

Sandra is thinking of two numbers.
Her two numbers have a negative sum, but a positive product.
Give an example of what her numbers could be.
and

Answers

Answer:

-2, -3

Step-by-step explanation:

Any 2 negative numbers would work

When 2 negative numbers are multiplied together, the product is always a positive number

Example: -2,-3

(-2)+(-3)=-5

(-2)(-3)=6

The example of her numbers could be -2 and -3.

What is a word problem?

A word problem is a verbal description of a problem situation. It consists of few sentences describing a 'real-life' scenario where a problem needs to be solved by way of a mathematical calculation.

For the given situation,

Let the two numbers be x and y.

Two numbers have a negative sum, but a positive product.

So, the two numbers are -x and -y.

Let us consider the two numbers be -2 and -3

Sum of two numbers = [tex]-2+(-3)[/tex]

⇒ [tex]-5[/tex]

Product of two numbers = [tex](-2)(-3)[/tex]

⇒ [tex]6[/tex]

Thus the sum have a negative number and the product is a positive product.

Hence we can conclude that the example of her numbers could be -2 and -3.

Learn more about word problem here

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Find the solution in the system of equations shown below

Answers

Answer:

no solution

Step-by-step explanation:

the lines are parallel, they never intersect.

.............

Answer fast!!!!!!!!!

Answers

Answer:

208?

Step-by-step explanation:

Answer:

Decimal- 2.08

Mixed Number- 52/25

Which community is more toxic

1 reddit

2 2b2t

3 dead by daylight

4 the entirety of 4chan

Answers

x^2+2=6
x^2=4
x=2
so 2

Suppose that IQ scores have a bell-shaped distribution with a mean of 104 and a standard deviation of 18. Using the empirical rule, what percentage of IQ scores are between 50 and 158?

Answers

Answer:

78

Step-by-step explanation:


Solve the system of linear equations by substitution.
y = -2x + 10
y = x +1

Answers

Step-by-step explanation:

y=14

y=1

thats the answer.

Choose all the numbers that 135 is divisible by.

Answers

Answer:

1, 3, 5, 9, 15, 27, 45, 135.

Step-by-step explanation:

Answer:

The factors of 135 are 1, 3, 5, 9, 15, 27, 45, 135

What is -1/6 as a decimal? a) -16 b) - 6 c) - 6 d) -1.6​

Answers

Answer:

-0.16666666666666

Step-by-step explanation:

-.16

Answer:

0.1667

Step-by-step explanation:

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