Mathematics High School

help ill give brainliest

Answers

Answer 1

sub= substitute, x=2, y= -3

Answer 2

Answer:

x = 2

y = -3

Step-by-step explanation:

6x+6y = -6

x = -5y-13

substitute for x

6(-5y-13) + 6y = -6

-30y-78+6y = -6

-24y-78 = -6

add 78m to each side

-24y = 72

divide each side by -24

y = -3

x =-5(-3)-13 = 2

Related Questions

please help, needed to graduate!!

Answers

Answer:

its b

Step-by-step explanation:

i just did that question last period

7. If AHBN - ALYR, find the value of x.
B
R
*+11
28
Y 21
L
N
H
3x-7

Answers

Answer:

x = 13

Step-by-step explanation:

I created a proportion from similar sides HB ≈ LY and NH ≈ RL

28/21 = (3x - 7)/(x + 11)

then cross-multiply to get

28(x + 11) = 21(3x - 7)

28x + 308 = 63x - 147

28x = 63x - 455

-35x = -455

x = 13

Can the sides of a triangle have lengths 6, 13, and 14?

Answers

Answer:

Step-by-step explanation:

No; . The sum of the lengths of any two sides of a triangle must be greater than the length of the third side.

Kay is going to do some work in her garden. Her garden is in the shape of a rectangle. Kay thinks she can buy enough paint to cover the decking for less than £65 Is Kay correct?

Answers

Answer:

Still not sep-by-step explanation:

A factory robot recently examined some bulbs, of which 4 were flawed and 26 were not. Considering this data, how many flawed bulbs would the robot be expected to find in a batch of 15 bulbs?

Answers

Answer:

Step-by-step explanation:

Given that:

Flawed bulbs = 4

Not flawed = 26

Total examined = (flawed + not flawed)

Total examined = (4 + 26) = 30

P(flawed) = flawed / total

P(flawed) = 4 / 30 = 0.1333333

If 15 is examined :

Expected number of flawed bulbs :

(4/30) * 15 = 2

In ΔMNO, n = 92 inches, ∠N=119° and ∠O=20°. Find the length of m, to the nearest 10th of an inch.

Answers

Answer:

Step-by-step explanation:

The length of the side of the triangle will be 69 inches.

What is the sine law?

The Law of Sines The law of trigonometric functions, sine law, sine formula, or sinusoidal rule is a trigonometric equation that relates the sizes of any triangle's edges to the sines of its orientations.

The sine law in the triangle ΔMNO is given as,

n / sin N = m / sin M = o / sin O

The third angle is calculated as,

∠M + ∠N + ∠O = 180°

∠M + 119° + 20° = 180°

∠M = 41°

The length m is calculated as,

n / sin N = m / sin M

92 / sin 119° = m / sin 41°

m = 69 inches

The length of the side of the triangle will be 69 inches.

More about the sine law link is given below.

https://brainly.com/question/17289163

#SPJ3

In the accompanying diagram of right triangle ACB, altitude CD is drawn to hypotenuse AB. If AB = 25 and CB = 10, what is the length of DB? (if you don’t know dont answer)

Answers

Answer:

The answer is 15

Step-by-step

if that didnt work sorry

=
Solve for x.
18+x=y
x = 0
?

Answers

18

have a nice day!!!

Answer:

The answer is 18

Step-by-step explanation:

18 + x really means 18 + 0, because x is equal to 0

and if 18 + x = y, it means 18 + 0 = y,

so y is equal to 18

hope this helped!

Which expression is equivalent to x-3x-(-5x)?

A. -9x B. -7x C. 2x D. 3x
HELP!!!! SHOW YOUR WORK WILL GIVE BRAINLIEST

Answers

Answer:

Step-by-step explanation:

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

Answer:

Step-by-step explanation:

[tex]x-3x-(-5x)[/tex]

it will be easier to solve the equation in sections:

[tex]x-3x[/tex]

[tex]-2x[/tex]

now deal with the other part

[tex]-(-5x)[/tex]

a negative multiplied by a negative equals a positive so:

[tex]+5x[/tex]

now putting the parts together:

[tex]-2x+5x[/tex]

[tex]3x[/tex], therefore the answer is d: [tex]3x[/tex]

what is the area of 17.3 feet , 13.4 feet and 10.7 feet

Answers

Answer:

2480.475

Step-by-step explanation:

just do the length times width times the height

A customer calls your landscaping business already knowing the total area of a circular garden they are going to have landscaped. The area of the garden is 33.26 yards². For the work they are asking you to do, you need to calculate the radius. Remember to work the Area formula backwards to solve for the radius.

Answers

Answer:

Step-by-step explanation:

Area = πr²

πr² = 33.26

r = √(33.25/π) ≈ 3.25 yards

a plywood plank measures 1cm x 8cm x 90cm and it weighs 396g what is the volume

Answers

1 x 8 x 90 = 720cm^3

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Answers

Answer:

(1,2)

Step-by-step explanation:

Answer:

x=1

Explanation:

3x+4*2x=11

(We move all terms to the left)

3x+4*2x-(11)=0

( We multiply elements )

3x+8x-11=0

(We add all the numbers together, and all the variables )

11x-11=0

( We move all terms containing x to the left, all other terms to the right )

11x=11

x=11÷11

x=1

Do these ratios form a proportion? 34¢ for every 44 units 17¢ for every 22 units

Answers

Yes bc 22 times 2 = 44 and 17 times 2 =34

Find the volume of a cylinder with a diameter of 6 inches and a height that is three times the radius. Use 3.14 for pi and round your answer to the nearest hundredth. (Hint: You may only enter numerals, decimal points, and negative signs in the answer blank)

Answers

Answer:

volume = 254.34 cubic inches

Step-by-step explanation:

r = diameter /2 = 6/2 = 3 in

h = 3 × r = 3 × 3 = 9

volume = pi× r^2 × h

3.14 × 3 × 3 × 9254.34 cubic inches..

Pitágoras filósofo matemático griego biblio entre los años 500 8496 antes de Cristo A qué edad murió y cuántos años hace que murió

Answers

Answer:

if you can transfer to englis i may be able to help

Step-by-step explanation:

A -foot-long footbridge has two diagonal supports that meet in the center of the bridge. Each support makes a angle with a short vertical support.

Answers

Complete question :

A 25-foot-long footbridge has two diagonal supports that meet in the center of the bridge. Each support makes a 65∘ angle with a short vertical support.

What is the length x of a diagonal support, to the nearest tenth of a foot?

Answer:

13.80 feets

Step-by-step explanation:

Taking either of the triangles formed and attached to the picture, the length of diagonal, x can be obtained using Pythagoras rule :

To obtain x :

Sinθ = opposite / hypotenus

Opposite = 12.5 feets ; hypotenus = x ; θ = 65°

Sin 65 = 12.5 / x

0.9063077 * x = 12.5

x = 12.5 / 0.9063077

x = 13.792225

x = 13.80 feets

18
х
49°
A) 13.6
C) 23.9
B) 19.7
D) 8.9

Answers

Answer:

the answer is c 23.9

i hope it helps

Answer:

c 23.9

Step-by-step explanation:

What is the average rate of change of f(x) = 1/4x²-4 over the interval from 0 to 3?

Answers

Answer:

no answer there is no answer from the choice

Find the value of x in the triangle shown below 12 9 x
It’s x=15

Answers

the answer to this is x=15. this is because of the 3-4-5 properties

Answer: 15

Step-by-step explanation:

It’s the right answer

please help me with this question fast!!!!

Answers

reflection and translation

can someone please help me

Answers

I believe it is B from what I did

Answer:

3[tex]\sqrt{15\\}[/tex]

Step-by-step explanation:

Please help!! Help.

Answers

Step-by-step explanation:

1. Cosine

2. Relationship is Cos = adj/hyp

3. x is 14

4. The hypotenuse of the triangle is 14cm long

need help please and

Answers

Answer:

B. 16x^2 - 9

Step-by-step explanation:

(4x-3) x (4x+3) = 4x(4x) + 3(4x) - 3(4x) - 9 = 16x^2 - 9

Answer:

the answer is B

Step-by-step explanation:

good luck on your assignment

Enter a number.
The measure of angle 7 is ___°

Answers

Answer:

151 ig

Step-by-step explanation:

vertical angles are equall

Answer:

151

Step-by-step explanation:

Show the work.!!!!!!!!

Answers

Answer:

9. 5y

10. 6x^2 + 4x^2 + 4 * (-1) = 10x^2 - 4

11. 2a^5 + 4b + b = 2a^5 + 5b

12. 14- 12= 2

8m + 2 + 4n = 8m + 4n +2

Step-by-step explanation:

8m + 2 + 4n=8m + 4n + 2 Thad the answer

I need help solving an angle in right triangle

Answers

Answer:

X=41.8°

went setting this up we know we have to use the Sin trig function because the Hypotenuse and the opposite side are being used. This makes our equation Sin x= 4/6.

This answer was incorrect.

7 times m help helpp

Answers

7*m = 7m i think this is right

Yes 7 x m is equal to 7m

. A recipe calls for 2/3 cup of sugar for every 1/2 teaspoon of vanilla.
What is the unit rate of cups per teaspoon?

Answers

X= 4/3 = 1 1/3 cups.

1 1/3 cups per 1 teaspoon of vanilla
To get to 1 tbs we multiply 1/2 by 2
If you do that to one side you have to do it to the next
2/3 x 2 is 4/e which simplifies to 1 1/3

yo does addiction "run in the family"? i really want to know because it does in mine and im kinda freakin out

Answers

Answer:

Indeed yes homie.

Step-by-step explanation:

Other Questions

4x = 44PLease help UNDEN Cave paintings are also known as __________________. mural art Chinese art silk painting parietal art Gabriel is at the grocery store, and wants to figure out his total cost before he gets to the register. He bought 2.5 pounds of apples that are x dollars a pound and 2 bags of lettuce for y dollars each. Gabriel remembers he has a coupon for $2 off his bill.Gabriel has $30 to pay for the groceries. What simplified expression would represent the amount of change he should receive A Flag for ReviewWhich statement expresses a theme from the excerpt?A.Winter is a cold and solemn time of year.B.Children bring joy and laughter into a home.lyC.Strong friendships are unaffected by age and time.D.Memories of old friends bring loneliness andlonging.it Can someone help me and Ill give you a Brainly promise i need help asap!!! I can give brainlist. PLZ I AM TIMED!!!!!!Describe how the poet's use of structural elements adds to the meaning of "A Tragic Story." Use at least two details from the passage to support your response. A 7-meter roll of white paper costs $1.65. What is the unit price, rounded to the nearest cent? Which expression is equivalent to (9x5y16/45x5y4)? for evaporation to take place it has to gain energy or loose energy pls helpppp The quality of sound that represents how long or short a sound lasts is called 29,30,32,35,39,\ Which is the next number in this pattern?A) 42B) 43C) 44D) 45E) 46 A radio transfers 270 j of energy electrically, 94.5 j is transferred by sound. Work out the efficiency of this radio. Give your answer as a decimal Explain answer !( Will give brainlst) evaluate -8y+x5 when x =2 and y= -3 Rearrange to make subject x 4(x-3)/a=y PLS HELP!!!!Can you describe a frogs metamorphosis, including whether it is complete or incomplete Plssss help meee I need help Which set of ordered pairs represents a function?O {(1, -2), (2, 4), (2,7), (-4, 7)}O {(-5,4),(-1,7),(-1,-6), (6, -9)}O {(-1,-2), (9,8),(-1,-6), (4,1)}O {(0,4), (7,0), (2,3), (5,0)} When a child says, I dont see why I have to know that; I cant remember it anyway, he is voicing a very reasonable protest. Of course, there are plenty of instances of wilful shirking, where a little effort can overcome the slackness of memory; but every teacher who is honest enough to reckon with himself knows he cannot give a sensible reason why things are to be taught which have so little to do with the childs life that to-morrow, or the day after examination, they will be forgotten; things which he himself could not remember were he not repeating them year in and year out, as a matter of his trade. And every teacher who has thought at all for himself about the essential nature of the young humanity he is dealing with, knows that six hours of daily herding and in-penning of young, active bodies and limbs, accompanied by the additional injunction that no feet are to be shuffled, no whispers exchanged, and no paper wads thrown, is a frightful violation of all the laws of young life. Any gardener who should attempt to raise healthy, beautiful, and fruitful plants by outraging all those plants instinctive wants and searchings, would meet as his rewardsickly plants, ugly plants, sterile plants, dead plants. He will not do it; he will watch very carefully to see whether they like much sunlight, or considerable shade, whether they thrive on much water or get drowned in it, whether they like sandy soil, or fat mucky soil; the plant itself will indicate to him when he is doing the right thing. And every gardener will watch for indications with great anxiety. If he finds the plant revolts against his experiments, he will desist at once, and try something else; if he finds it thrives, he will emphasize the particular treatment so long as it seems beneficial. But what he will surely not do, will be to prepare a certain area of ground all just alike, with equal chances of sun and amount of moisture in every part, and then plant everything together without discrimination,mighty close together!saying beforehand, If plants dont want to thrive on this, they ought to want to; and if they are stubborn about it, they must be made to.In the second sentence of this paragraph, the repetition of the word things primarily serves to:A) qualify a claim by acknowledging an exception to itB) portray contrasting viewpoints as equally legitimateC) clarify an argument by restating it in simpler termsD) illustrate a generalization with a particular caseE) strengthen an assertion by broadening its implications