help ill give brainliest

Help Ill Give Brainliest

Answers

Answer 1
Answer: Choice B

==========================================

Explanation:

Here's a slightly more detailed breakdown of what's going on

3x + 2y = 15 ... start with the first equation

3x + 2( y ) = 15 .... the parenthesis don't change the expression

3x + 2( 3x+5) = 15 ... replace y with 3x+5; since y = 3x+5

From here, you solve for x like you would any other single variable equation. Once you know x, you can determine y through y = 3x+5.


Related Questions

8 star fruit cost $16. How many star fruit can you buy for $8?

Answers

Answer:

you can buy 4  star fruit

Step-by-step explanation:

All it is , is subtraction half of 8 is 4 and half of 16 is 8

What is an equation of the line that passes through the points (-4, -1)(−4,−1) and (3, -8)(3,−8)? Put your answer in fully reduced form.

Answers

Zap tap nape kap sap
The answer is y= -x—5

A handbag contains seven coins and three
keys. Two items are taken out of the handbag
one after the other and not replaced. Find
the expected number of keys taken out of the
handbag

Answers

Answer:

0.59998

Step-by-step explanation:

Number of keys = 3

Number of coins = 7

Total = 10

Number of items taken out = 2

Expected number of keys taken out:

Let x = Number of keys taken out

X = 0

1st pick = 7/10

2nd pick = 6/9

7/10 * 6/9 = 0.46666

X = 1

(7/10 * 3/9) + (3/10 * 7/9) = 0.46666

X = 2

(3/10 * 2/9) = 0.066666

X : ____ 0 ______ 1 _______ 2

P(X): _0.46666__0.46666 _0.06666

Expected value :

(0*0.46666) + (1*0.46666) + (2*0.06666)

= 0.59998

The lines 2x=ky+2 and (k+1)x=6y-3 have same gradient. Find possible values of k
I need the answers ASAP please!

Answers

Answer:

k = 3 or k = -4

(Anyone can correct me if I'm wrong)

Step-by-step explanation:

[tex]2x=ky+2\to\ eq1\\(k+1)x=6y-3\to\ eq2\\$Change to this form: $y=mx+c\\ky=2x-2\\y=\frac{2x-2}{k}\\$gradient of eq1: $\frac{2}{k}\\6y=(k+1)x+3\\y=\frac{(k+1)x+3}{6}\\y=\frac{k+1}{6} x+\frac{3}{6}\\y= \frac{k+1}{6} x+\frac{1}{2}\\$gradient of eq1: $\frac{k+1}{6}\\$Since gradient, m, is the same for both lines,$\\\frac{2}{k}=\frac{k+1}{6}\\12=k^{2}+k\\k^{2}+k-12=0\\(k-3)(k+4)=0\\k=3 $ or $ k=-4[/tex]

hi hi hi hi hi help help help help

Answers

Answer:

rate

Step-by-step explanation:

r(t)=d

r=d/t

r=miles/hour=mph

r=12

Answer: I THINK it’s d

Step-by-step explanation:

6.
True or False:
Common logarithms are logarithms with a base of 10.

Answers

Answer:

true

Step-by-step explanation:

Is 0.3 greater than 0.09

Answers

Answer:

Yes, because 9 is in the hundreths place and 3 is in the tenths

Step-by-step explanation:

Answer:

Step-by-step explanation:

no because 0.3 is the same as 3/10 and 0.9 is the same as 9/10 wich is greater

Write in quadratic form
f(x)=(x+2)^2

Answers

The quadratic is f(x)=x^2+4x+4

Fill in the blank with the correct word(s) to complete the sentence.


A net is a two-dimensional ______ of a three-dimensional figure.


A.
pattern


B.
length


C.
congruent


D.
height

FREE BRAINLEST GIVEAWAY THE FIRST PERSON TO ANSWER FIRST GETS BRAINLEST! :P

Answers

A. Pattern
This is correct

Answer:

pattern

Step-by-step explanation:

hope it helps............:)

divide 600 in the ratio 2: 3: 4​

Answers

Answer:

133.33, 200, 266.66

Step-by-step explanation:

GIven data

This is a ratio problem, and we will use the part to all method to get the solution

The given ratio is

= 2: 3: 4​

the total ratio

=2+3+4

=9

Hence the first part is

2/9= x/600

cross multiply

9x= 1200

x= 1200/9

x= 133.33

The second part

3/9=x/600

1/3=x/600

3x=600

x=200

The third part

4/9=x/600

4/9=x/600

9x=600*4

9x=2400

x=2400/9

x=266.66

Therefore the figures are

133.33, 200, 266.66

In the number 15.42, how is the value of the digit "2" different from the value of the digit "2" in the number 12.54?

Answers

This I crazy
This is crazy

Please help and I please don't answer just for the points I'll report you

Answers

Am i supposed to look for intercepts?

Please help math sucks

Answers

Formula: is/of = %/100

A business analyst is investigating whether the mean amount of purchases made by customers at an online department store is greater than $100. The analyst obtained a random sample of 56 orders and calculated a sample mean of $102.30 and a sample standard deviation of $5.30.
Which of the following is an appropriate test for the investigation?

Answers

Answer:

B

Step-by-step explanation:

I don't know

An appropriate test for the investigation is, One sample t-test for sample mean. So option B is correct

What is a random sample ?

The process of selecting a sample of data from a population in order to draw conclusions about the population is known as random sampling. Additionally known as probability sampling. Non-probability sampling, often known as non-random sampling, is this sample's opposite. Simple random sampling, stratified sampling, cluster sampling, and multistage sampling are the main forms of this sampling. Convenience samples are often referred to as non-arbitrary samples in sampling methodologies.

Given that,

Population mean = $100

Sample = n = 56

Sample mean =  $102.30

sample standard deviation = $5.30

So, all the data mean, standard deviation is given

therefore, t-test used and one type of sample used as well

Hence, It is one-sample t-test for sample mean

To know more random sample check:

https://brainly.com/question/29852583

#SPJ6

If f(x) = 2x + 1 then f(3)=

Answers

Answer:

f(3)=7

Step-by-step explanation:

just plug in the number

f(3)=2×3+1

=7

If anyone could help me with this question that would be great

Answers

Answer:

5/3

Step-by-step explanation:

image/pre-image

15/9 simplified is equal to 5/3 which is the scale factor

Find the area of a triangle with a base of 10 inches and a height of 5 inches

Answers

Answer:

area = 25 in^2

Step-by-step explanation:

area = 1/2(10)(5) = 25 in^2

Answer:

The height is 4 inches.

For a triangle, we have Area = 1/2 base times height.

With a = area, b = base and h = height,

we have:

A=1/2bh

We are told that A=10 square inches and b=5 inches, so we need to solve (find h ) for:

10=1/2(5)h

We can get rid of the fraction by multiplying by 2 on both sides:

20=5h

Now divide noth sides by 5 (or multiply by 1/5 , to get

20/5=5h/5 so 4=h

The height is 4 inches.

Step-by-step explanation:

Hope it is helpful....


4. An expression is shown.
4x106
2x 102
Write an equivalent expression in scientific notation.
x 10

Answers

Answer:

Step-by-step explanation:

The simplest way to do this is to break in into parts

2 * 4 = 810^6 * 10^2 = 10^8 Notice that when you multiply base 10 powers, you add the powers. That's the  key to scientific notation.

When you combine these two you get 8 * 10^8

Chris says that the expression 4n - 2 can be written as 2(2n - 1). Do you agree? Explain your answer.

Answers

Answer:

Correct

Step-by-step explanation:

The given expression is : 4n - 2

Chris says that the expression (4n-2) can be written as 2(2n - 1).

Taking 2 common on the given expression.

(4n-2) = 2(2n-1)

Hence, he has wrote it in a correct way.

1/2x+4=20 solve for x.. Help?

Answers

Answer: 32

Step-by-step explanation: ok so here is what i do for those I grab a caculator (desmos online caculator i like to use but not required) then ill do (1/2×x)+4 but then once i write that i go back to the x delete the x and keep putting random numbers in higher and higher by one till the i get the answer (example: for this one i wrote that than i removed the x in it and did 1/2×5+4 then when that did not equal 20 i turned the 5 into a 6 then 6 was wrong so 7, then 8, then i just skipped to 20 then 20 was still wrong so skipped to 30, 30 was also wrong but CLOSE so then i tried 31 then 32 till the answer was 20 and when i did 32 it did say 20) hopes this helps

Answer: x=32

Step-by-step explanation:

1/2x+4=20

      -4   -4

1/2x=16

Multiply by 1/2 on each side

x=32

Rufus collected 100 pounds of aluminum cans to recycle. He plans to collect an additional 25 pounds per week. Write an equation for total pounds, y, of aluminum cans after x weeks. How many pounds of cans will Rufus have after 6 weeks?


Answers

y= 100+25x After 6 weeks Rufus will have 250 pounds of cans.

Please help me
thank you!

Answers

Answer:

Is that your answer

Answer:

3

Step-by-step explanation:

1/6 of 18 is 3/18, and 2/3 of 18 is 12/18

So 3/18 + 12/18= 15/18

18-15=3

Hope this helps.

drawbridge at the entrance to an ancient castle is raised and lowered by a pair of chains. The figure represents the drawbridge when flat. Find the height of the suspension point of the chain, to the nearest tenth of a meter, and the measures of the acute angles the chain makes with the wall and the drawbridge, to the nearest degree.


Answers

Answer:

4.0 meters, ∠C = 39°, ∠A = 51°

Step-by-step explanation:

Firstly, our diagram shows us that the given triangle is actually a right triangle. So we can use the Pythagorean Theorem to solve for the height of the chain:

[tex]a^{2} +b^{2} =c^{2}[/tex]

[tex](3.3)^{2} +b^{2} =(5.2)^{2}[/tex]

[tex]b^{2} =(5.2)^{2}-(3.3)^{2}[/tex]

[tex]b =\sqrt{(5.2)^{2}-(3.3)^{2}}[/tex]

[tex]b=4.0187...[/tex]

[tex]b=4.0 m[/tex]

Now, we can use the Law of Cosines to figure out one of the acute angles:

[tex]c^{2} =a^{2} +b^{2} -2ab(cos(C))[/tex]

[tex](3.3)^{2} =(4.0)^{2} +(5.2)^{2} -2(4.0)(5.2)(cos(C))[/tex]

[tex]cos(C)=\frac{(3.3)^{2}-(4.0)^{2} -(5.2)^{2}}{-2(4.0)(5.2)}[/tex]

[tex]C=cos^{-1}( \frac{(3.3)^{2}-(4.0)^{2} -(5.2)^{2}}{-2(4.0)(5.2)})[/tex]

[tex]C=39.3915...[/tex]

∠C = 39°

And since we know that all angles in a triangle add up to 180°:

∠A + ∠B + ∠C = 180

∠A + 90 + 39 = 180

∠A = 180 - 90 - 39

∠A = 51°

However, you should always review any answers on the Internet and make sure they are correct! Check my work to see if I made any mistakes!

Jessica sold girl scout cokies she sold 26 boxes.How many cases of 12 plus extra boxes does she need.

Answers

Answer:

Jessica needs 2 cases of 12 girls scout cookies plus 2 extra boxes

Step-by-step explanation:

Number of boxes sold = 26

Cases of 12 plus extra boxes needed

Number of cases of 12 needed :

Number of boxes sold / 12

= 26 /12

= 2 remainder 2

Hence, Jessica needs 2 cases of 12 girls scout cookies plus 2 extra boxes

can someone help with this? ​

Answers

Answer:

-√(18)i, √(18)i

Step-by-step explanation:

3x^2+54 = 0

So first, no real solution, but...

x^2+18 = 0

x^2 = -18

==> x = -√(18)i, √(18)i

AOB and COD are two straight lines. Find ZBOD.
help

Answers

Bod is equal to 65.

simplify the following
a) 5(3a - 45
b) 4(a + 2b - 1

Answers

Step-by-step explanation:

I hope that is useful for you :)

HELP ME PLEASE!!! I NEED HELP!​

Answers

For the whole numbers:

24

26

23

25

21

46

63

57

75

91

1. 24 and 23.8

2. 26 and 25.7

3. 23 and 22.8

4. 25 and 24.8

5. 21 and 20.9

6. 46 and 46.3

7. 64 and 63.7

8. 56 and 56.5

9. 75 and 74.6

10. 91 and 90.7

When rounding, whether it's a whole number or a decimal, you would round up if the number next to it is 5 and up. You wouldn't change the number next to it if it's below 5.

If you have any further question, please reach out to me :)

PLEASE help, im trying to bring my grade up for this class.

Answers

Answer:

Yes, Nan pays $25 more

Step-by-step explanation:

144 hours /24 hours per day = 6 days exactly

$50 + (5 x $25) = $175

145 hours 24 hours per day = 6 days and one hour  (must pay for 7 days)

$50 + (6 x $25) = $200

$200 - $175 = $25 more

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

Answers

75 ft^2 mark brainly pls xo

Answer:

75 ft

Step-by-step explanation:

10 * 6 = 60

1/2 * 6 * 5 = 15

60 + 15 = 75 ft

Other Questions
HELP PLEASE!!! I NEED THIS DONE TODAY PLEASE. I did some already05.03 DIRECTIONSUse complete sentences to respond to each question about the novel or short story you read independently for this module. When providing quotes from your text, include page numbers in parentheses. Title of short story or novel: WonderAuthor: R.J. PalacioDescribe the setting of your novel/short story.Provide a "quotation" from the text to support your answer.Describe the protagonist of your novel or short story.Provide a "quotation" from the text to support your answer.Describe the antagonist from your novel or short story. Describe an important piece of information from the backstory Provide a "quotation" from the text to support your answer.Describe an early development in the plot and explain why it is important.Provide a "quotation" from the text to support your answer. Need help because i cant seem to figure it out If you play volleyball help! If X is the ball, which player should pass the ball?For the above diagram, what is the cueing to help guide whos ball is it? In hopes of encouraging healthier snacks at school, Janice brought in a tray 1 pointof carrot sticks and apple slices to share. She brought 76 snacks in all. 19 ofthe snacks were carrot sticks. What percentage of the snacks were carrotsticks? Segregation meant that black peopleA. were separated from white people in many areas.B. worked and played together with white people.C. were not allowed to become ministers.D. all moved away from Montgomery, Alabama. You want to order some T-shirts that cost $14 each. Shipping is $7 per order. If youbuy 11 T-shirts, what will the order cost?$231$154$161$91 What does w equal?pls help me What is 2,117 rounded to the nearest hundred? What are the benefits of publishing your writing online as opposed to on paper?Select all that apply.You can keep your writing private online more easily than you can on paper.You can share your work with others online more easily than you can on paper.You can update online information immediately, but you cannot do so on paper.You can organize your content online, but you cannot do so on paper. Me gusta mucho hablar de (1) familia. (2) abuelos son muy viejos. (3) padres son trabajadores y simpticos. (4) hermana pequea, Sara, es muy inteligente. Y, bueno, (5) hermano Ral es tonto. Y t, cmo es (6) familia? (7) escuela es muy grande. Yo vivo muy cerca de la escuela. (8) mejor (best) amiga se llama Filomena. A Filomena le gusta mucho estudiar qumica con (9) compaeros. Los sbados, ella visita a (10) abuelo natasha has a sales job and receieves $60,440 as her annual pay plus commission. her company pays her a commision of 12% on her total sales if she makes sales of $70,000 in the first 3 months how much will she be paid for those 3 months? Government sponsored health insurance for elderly Americans and Americans with disabilities. what happens to the boiling point of hydrocarbon compounds when the number of carbon atom increasesA. DecreasesB. IncreasesC. Remains the sameD. None of theseI NEED YOUR ANSWER RN GUYSS PLEASEE Which country is directly south of the island of Honshu?VietnamIndonesiaSouth KoreaChina Capital assets used by an enterprise fund should be accounted for in the:_________.a. Business-type activities journal but no depreciation on the capital assets should be recorded. b. Enterprise fund and depreciation on the capital assets should be recorded c. Governmental activities journal and depreciation on the capital assets should be recorded d. Enterprise fund but no depreciation on the capital assets should be recorded PLEASE HELP 20 POINTSSHOW ALL WORK Which choice is the best version of the underlined word in sentence 13? A NO CHANGE B shows C will have shown D was showingSentence 13: By writing this poem, Lee honors his family's homeland and showed the value he places upon the tradition of expressing memories through song .Underlined word: showed Please Help!!!!Muscles intended for large, powerful contractions contain llx muscle fibers. true or false HEY can You help me with this work pls i need help don't put random. if u don't know it pls guys. Can someone help meee