Mathematics College

Find the slope of the line.
3x-10y=20

Answers

Answer 1

Answer:

slope is -3/10

Step-by-step explanation:

-10y=-3x+20

y= -3/10x+,20

Related Questions

express 75 as a product of three factors

Answers

15(5) , 25(3) , 75(1)
That said

factor 3a^5-18a^3+6a^2, I know the answer is 3a^2(a^3-6a+2) but I am so lost on how to get the factor of 3a^2..How in the world do you get the exponent for the factor

Answers

Answer:

[tex]\huge\boxed{3a^2(a^3-6a+2)}[/tex]

Step-by-step explanation:

[tex]\sf 3a^5-18a^3+6a^2\\\\HCF = 3a^2\\\\Take \ 3a^2 \ common\\\\= 3a^2(a^3-6a+2)\\\\\rule[225]{225}{2}[/tex]

Hope this helped!

~AH1807

Find m∠ABC in the picture. (it's not solving for x.)

Answers

Answer:

The answer would be 6º

Step-by-step explanation:

first we know that a straight lin is always 180º

so since we know that the angle outside of the triangle is 110º we can do 180º -110º

then we get the measuerment for angle C :70º

since we dont know the measurements of the other angles but know that a full triangle is equal to 180º we make this equation

2+6x+12x+70=180

then we solve

72+18x=180

-72 -72

18x=108

/18 /18

x=6

then we plug in the x value to find the angle measurement

2+6(6)

2+36

38º

your answer is m<CAB is 38º

Given the function f(x) = 4x + 1, EXPLAIN and show how to find the average rate of change between x = 1 and x = 3.

Answers

The average rate of change is calculated as the slope of the line between the two points on the graph. Since at x = 1, y = -3, and at x = 3, y = 1, these are the two points which we calculate the slope from. Using the formula

m = (y2 - y1)/(x2 - x1)

m = (1 - (-3))/(3 - 1)

m = 4/2

m = 2

Therefore the slope, or the average rate of change, between these points is 2.

Average rate of change is another word for the slope. The function you have is presented in slope-intercept form (y=mx+b), where m=your slope. This means that you already know the slope, which is 4.

Just in case you need to show why the slope = 4, I’ll leave how to find it here:

To find the slope, use the formula: y2-y1/x2-x1

First, you need to find the y-values at x=1 and x=3. To do this, plug the x-values into the equation. The value you end up with is your y-value.

f(1) = 4(1) + 1 = 5
f(3) = 4(3) + 1 = 13

So your two points are (1, 5) and (4, 13). Now plug these points into the slope formula

m = (13-5)/(3-1) = 8/2. 8 divided by two is 4, so your average rate of change is 4. You can double check this by graphing.

Original amount: 27
End amount: 38.61

Increase or decrease

Answers

Answer:

increase

Step-by-step explanation:

11.61 was added to 27

Oil costs $4 per gallon and diesel costs 5.24 per gallon. If the price of oil rises at 10% per month, how many months will it take before a gallon of oil costs more than a gallon of diesel?

Answers

Answer:

It would take 31 Months for oil to get the same price as diesel.

WALLAI HELP ME THIS IS HARD HELP ME PLEASE

Answers

Answer:

3,-1 I hope it is a right answers

Step-by-step explanation:

( 3,1 )

please mark as brilliant

write the number pattern by writing the next number of 100, 90, 80, 70

Answers

Answer:

Step-by-step explanation:

Goes down by ten everytime.

Answer: 60

Step-by-step explanation:

You are taking away 10 each time.

25. Which equation is not proportional? *
Oy=2x-3
Oy=150x
Oy=1/2x
YE 7

Answers

Hi there! Your answer is y = 2x-3

Please see an explanation for a better and clear understanding to your problem.

Any questions about my answer and explanation can be asked through comments! :)

Step-by-step explanation:

For an easy understanding to "proportional equation", It is basically an equation that is in form of y = mx + b where b = 0. Therefore, when b = 0 - Our new equation would be y = mx.

Other choices are in form of y = mx while the first choice isn't in the form of y = mx.

To be a proportional function or equation, the equation must be in the form of y = mx only.

The question asks which equation Is not proportional. Hence, the answer is the first choice.

Hope this helps!

If a day of the week is randomly selected, what's the probability that the day contains the letter "a" in its name?

Round your answer to four decimal places (if necessary).

Answers

Answer:

Step-by-step explanation:

monday, tuesday, wednesday, thursday, friday, saturday, and sunday all have "a" in it so it has a 100% probability

Answer:

There would be a 100% chance.

Step-by-step explanation:

All the days of the week end with -day. The word day has an 'a' in it.

Monday

Tuesday

Wednesday

Thursday

Friday

Saturday

Sunday

Therefore, it will be certain that you will pick a day that has an 'a' in it's name.

Hope this helps!

wn
he quantity
8. 25% of 32.4

Answers

Step-by-step explanation:

25 percent of 32.4 is 8.1

Answer:

8.1

Step-by-step explanation:

.25x32.4=8.1

I really need help with this. Can anyone help me please?

Write a polynomial function f of least degree that has rational coefficients, a leading coefficient of 1, and the given zeros.
3,-2+2i

Thank you!

Answers

Answer:

f(x) = x³ + x² - 4x - 24

Step-by-step explanation:

Since one of zero's is complex number, its conjugate should also be a zero of the given polynomial.

The conjugate of -2 + 2i is -2 - 2i

The polynomial is going to be:

f(x) = (x - a)(x - b)(x - c) with minimum of degree 3, with zero's a, b and c.

Substitute zero's:

f(x) = (x - 3)(x - (-2 + 2i))(x - (-2 - 2i)) = (x - 3)(x² - x (-2 + 2i -2 - 2i) + (-2 + 2i)(-2 - 2i)) = (x - 3)(x² + 4x + 8) = x³ + x² - 4x - 24

HEEEEEEEEEELLLLLLLLLLP

Answers

The answer is B, d=8.75h
It’s 8.75h because Michael earns 8.75 per hour the key word is “per hour”

Fruit-O-Rama sells dried pineapple for $0.25 per ounce. Mags spent a total of $2.65 on pineapple. How many ounces did she buy

Answers

Answer:

2.65/.25= 10.6oz

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

Answer:

10.6 Ounces

Step-by-step explanation:

Each ounce of dried pineapple costs $0.25

Divide $2.65 by $0.25

2.65/0.25=10.6

Mags bought 10.6 oz.

You can sell 60 pet chias per week if they are marked as $1 each, but only 50 per week if they are marked $2 per chia. Your chia supplier is prepared to sell you 10 chias per week if they are marked $1 per chia, and 20 per week if they are marked $2 per chia. At what price should the chias be marked so that there is neither surplus nor a shortage of chias

Answers

Answer:

$1 for 60

Step-by-step explanation:

60$ is a better deal.

Answer for brainliest

Answers

Answer:

Step-by-step explanation:

Answer:

Y = 2x. it is given

now , 2x + 2y = 30

now putting y = 2x ,. in ( 2x + 2y) = 30

hence ,.2x + 4x = 30

6x = 30

x= 5

now ,y= 2x

y = 10

Find the solution set to 2x-1<7 and 3x-5>16

Answers

Answer:

Step-by-step explanation:

I think it’s 2 as well

Find the area of the composite figure.

If you answer I'll give you branliest :)))(

Answers

Answer:

252cm²

Step-by-step explanation:

This figure consists of 2 trapeziums.

Area of a trapezium= (The sum of the parallel side/2)× height

Explanation:

[(16+20)÷2]×7

[36÷2]×7

18×7

126cm²

Since the 2 trapezium have the same value we will just multiply the answer by 2.

126×2

252cm²

Hope this helps:)

Simplify the expression:
6(20 + 1)
=

Answers

Answer:

120+6

Step-by-step explanation:

Using distributive property 6times 20 is 120 and 6 times 1 is 6 so 120+6

4) The measure of unknown angle x is.

Answers

The sum of the triangle is 180
180=110+2x
X=180-110 /2
X=70/2
X=35

[tex] \sqrt{x - 1} (x - 6) {}^{2} [/tex]
inflection points?

Answers

Answer:

1 and 6

Step-by-step explanation:

it is just like the roots of a polynomial, since [tex]\sqrt{x-1}[/tex](x-6)^2=0

we can separate the two pieces of the problem

\sqrt{x-1} =0

square both sides to get

x-1=0. x=1

(x-6)^2=0

square root both sides and get

x-6=0

x=6

so the two inflection points of the equation are 6 and 1

Hope that helps :)

Researchers interested in lead exposure due to car exhaust sampled the blood of 52 police officers subjected to constant inhalation of automobile exhaust fumes while working traffic enforcement in a primarily urban environment. The blood samples of these officers had an average lead concentration of 122.31 µg/l and a SD of 38.75 µg/l; a previous study of individuals from a nearby suburb, with no history of exposure, found an average blood level concentration of 35 µg/l.

Required:
a. Write down the hypotheses that would be appropriate for testing if the police officers appear to have been exposed to a higher concentration of lead.
b. Explicitly state and check all conditions necessary for inference on these data.
c. Test the hypothesis that the downtown police officers have a higher lead exposure than the group in the previous study. Interpret your results in context.
d. Based on your preceding result, without performing a calculation, would a 99% confidence interval for the average blood concentration level of police officers contain 35 ug/l?

Answers

Step-by-step explanation:

n = 52

x bar = 122.31

standard deviation sd = 38.75

1. the hypothesis:

null hypothesis

h0: μ ≤ 35

alternative hypothesis

h1: μ > 35

we have been given the sd of the sample but not that of the population. so what we are supposed to use here is the t test and not the z test. the following conditions have to be met.

population has to be normalsample size has to be more than 30. we have sample size = 52 in this question.

= [tex]\frac{122.31-35}{38.75/\sqrt{52} }[/tex]

= 87.31/5.37

= 16.26

using the T distribution function in excel, the p value was calculated and found to be approximately equal to 0.

TDIST(16.26, 51, 1)

since p value is very small we reject the null and accept the alternate hypothesis.

4. from the result above the answer to this question is yes

Please help! It’s super easy and I’ll reward you brainiest

Answers

Use 30 as a common denominator.
30/30+20/30 = 50/30
1/2 of 50 is 25
25/30
Simplified to 5/6.

what is the value of a?

Answers

Answer:

9\sqrt{2}

Step-by-step explanation:

this is a 30-60-90 triangle so

the side opposite of 30 is x and the opposite side of 60 is x[tex]\sqrt{2}[/tex]. then the side opposite 90 is 2x.

so if 9=x then a=x\sqrt{2}

9\sqrt{2} is the side length of a

Hope that helps :)

Select all of the values for x that would make the inequality 2 x > 10 true.

a 1
b 3
c 5
d 8
e30

Answers

Answer:

d 8

e 30

Step-by-step explanation:

x must be greater than 5

Answer: D E

Step-by-step explanation:

2(8) > 10

2(30) > 10

Both greater than

pls help the teacher said it’s not 14 I don’t know

Answers

Answer:

let no be x

by the question

2x-5=9

2x=9+5

x=14/2=7

the secret no is 7.

Solve the problem:
Kiram has 5 ziploc bags. He puts an equal number of marbles (X).Then he realized that he
needed to add 2 more marbles for each bag. If the total number of marbles is 30 how many
marbles in each bag?

Answers

Answer:

Step-by-step explanation:

I guessed dont trust the answer

Solve. Remember to insert units when writing your answer. A carpenter needs to cut a board into fourths. If the board is 32 ft 8 in. long originally, how long will each cut be?

Answers

Answer:

[tex]Each\ cut = 8ft\ 2in[/tex]

Step-by-step explanation:

Given

[tex]Length = 32ft\ 8in[/tex]

[tex]Cuts = 4[/tex]

Required

Determine the length of each cut

This is calculated by dividing the total length by the number of cuts.

So, we have:

[tex]Each\ cut = \frac{Length}{Cuts}[/tex]

[tex]Each\ cut = \frac{32ft\ 8in}{4}[/tex]

Split:

[tex]Each\ cut = \frac{32ft}{4} + \frac{8in}{4}[/tex]

[tex]Each\ cut = 8ft+ 2in[/tex]

[tex]Each\ cut = 8ft\ 2in[/tex]

As a farmer, one of your responsibilities is to plow the field to prepare it for planting. On day 1, you plowed of the field. On day 2, you plowed of the field.

How much more of the field did you plow on day 1 than on day 2?
a.1/16
b.1/12
c.5/24
d.13/24

Answers

Answer:

you plowed more of the field on day 2 than on day one because minus equals

Step-by-step explanation:

the farmer has a field of 300m.he want to fence it with 4 rounded barbed wire . what is the total length of wire he requires

Answers

Answer:

1,200 meters.

Step-by-step explanation:

Given that the farmer has a field of 300 meters and he wants to fence it with 4 rounded barbed wire, to determine what is the total length of wire he requires, the following calculation must be performed:

300 x 4 = X

1,200 = X

Thus, the farmer needs 1,200 meters of barbed wire to be able to fence his entire field.

Other Questions

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Find the slope of the line. 3x-10y=20​

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Find the slope of the line.
3x-10y=20