Mathematics Middle School

I need help I plss
I don't get how to solve this

I Need Help I Plss I Don't Get How To Solve This

Answers

Answer 1

5.

x = -1

y = 3

Step-by-step explanation:

you'll want to cancel the y numbers

5.

-2x-9y=-25

-4x-9y=-23

multiply the bottom with -1 so that you have

positive or +9y

-2x-9y= -25

-1 times (-4x-9y= -23)

-2x-9y= -25

+4x+9y= +23

this equals

2x = -2

x = -1

put -1 where the x is in -2x-9y= -25 to get y

-2(-1) -9y = -25 =

+2 -9y = -25

-9y = -27

y = 3

6.

8x+ y= -16

-3x+ y= -5

multiply 8x+ y= -16 with +3 AND

multiply -3x+ y= -5 with -8

so you can cancel out the x's

+3 (8x+ y= -16)

-8 times (-3x+ y= -5)

8x+ y= -16

+3x -y= +5

equals

24x+ 3y= -48

-24x +8y= -40

11y = -88

y = -8

Answer 2

Answer: just answering so that super smart person can get brainliest :)

Step-by-step explanation:

Related Questions

will mark brainliest ONLY if you explain how it is the correct ;3

the largest number of four digits exactly divisble by 88 is:

a)9768

b)8888

c)9988

d)9944

Answers

Answer: D

Divide each number by 88

9768 ÷ 88 = 111

8888 ÷ 88 = 101

9988 ÷ 88 = 113.5

9944 ÷ 88 = 113

Since D is the largest whole number the answer is D

Answer: D
Divide each number by 88
9768 ÷ 88 = 111
8888 ÷ 88 = 101
9988 ÷ 88 = 113.5
9944 ÷ 88 = 113
Since D is the largest whole number the
answer is D

help if you answer correctly I will make you brainly!

help if you answer correctly I will make you brainly!

Answers

Answer: B

I devided each classes fund money and B was the highest each student gave $17

what is the value of this expression
5 (9/12 - 1/4) + 0.5

Answers

The answer to this is 3

__________________________________________________________

PEMDAS=  Parentheses, Exponents, Multiplication and Division (from left to right), Addition and Subtraction

__________________________________________________________

9/12 - 1/4 = 0.5  

0.5 x 5 = 2.5

2.5 + 0.5 =3

The answer is either three or 1. But I think it’s 1 .

Which statement compares the fractions two fourths and five twelfths correctly?

two fourths is less than five twelfths
two fourths is greater than five twelfths
five twelfths is equal to two fourths
five twelfths is greater than two fourths

Answers

Answer:

B. two fourths is greater than five twelfths

Step-by-step explanation:

B
2/4 is greater than 5/12

I like to ask myself this question: would i rather have 1/2 of a pizza or 5/12 of a pizza? that’s how you know which one is greater

in a survey of 3,100 people who owned a certain type of car, 2,015 said they would buy that type of car again. What percent of people of the people surveyed were satisfied with the car?

Answers

The percent of people of the people surveyed were satisfied with the car is  the percent of people of the people would buy that type of car again, so we have:  2015 ÷ 3100 × 100% = 65%

ANSWER: 65%

Ok done. Thank to me :3

Answer:

2015 / 3100%= 65%

Step-by-step explanation:

You could never tell how many people there are in this world. So that is why the 3100 should have a percentage which is divided by 2015, equals 65%.

Which scenario can be modeled by the linear function
y = -15x + 500?

A. The temperature on Jupiter is
15℉ and increases by 500℉ every day.

B. There is a population of 500 giraffes in Western Africa that decreases by 15 giraffes each year.

C. A carpet cleaning service charges $500 plus an additional $15 for every hour.

D. A membership fee for a movie streaming service is free, but each rental costs $15.

Answers

I think the answer is C
The answer is a because it is able to be modeled unlike the rest

A study found that 9% of dog owners brush their dog’s teeth. Of 578 dog owners, about how many would be expected to brush their dog’s teeth? Explain.
A.
50; 9% ≈ 10% and 578 should be rounded down to 500; 10% of 500 = 50

B.
60; 9% ≈ 10% and 578 ≈ 600; 10% of 600 = 60

C.
70; 9% ≈ 10% and 578 ≈ 700; 10% of 700 = 70
is it A. B. or C.

Answers

Answer: A

Step-by-step explanation:  578*0.09=52.02~ is 50

Answer A, 578x0.09= 52.02 which round to the nearest number of ten(s) is 50

What’s the measure of x?

( It’s on khan academy ) thanks :)

50 points!!! and will give brainlyiest

Whats the measure of x? ( Its on khan academy ) thanks :)50 points!!! and will give brainlyiest

Answers

Answer:

\(\huge\boxed{\sf x =28 \textdegree}\)

Step-by-step explanation:

Given that,

∠IAK = 62°

∠IAK + ∠IAD = 90° (Complementary angles)

62 + ∠IAD = 90°

Subtract 62 to both sides

∠IAD = 90 - 62

∠IAD = 28°

∠IAD = ∠ACB (Corresponding angles are equal)

So,

∠ACB = 28°

∠ACB = ∠GCJ (Vertically opposite angles are equal)

So,

28° = x°

OR

x° = 28°

\(\rule[225]{225}{2}\)

Answer:

28 degrees

Step-by-step explanation:

If two lines cross each other, it makes 4 angles, and 2 angles from opposite sides have the same length. Since line KL and line IJ crossed, angle KAI and angle LAJ will have the same angle.

--> Angle LAJ is 62 degrees

If we look closely, there is a triangle ABC, and since the question said that line KL and line FG is perpendicular, the angle ALG will be 90 degrees.

We know that in a triangle, there are three angles, and the angle measures combined equals 180.

Since we know two angles: 90 and 62, we take them away from 180 to find the last angle BCA.

--> 180 - 90 - 62 = 28

--> Angle BCA = 28 degrees

Like I said at the beginning, if two lines cross each other, opposite angles are the same size. So angle x will also be equal to angle BCA, which is 28 degrees.

Angle x = 28 degrees

A jewelry store recently sold 52 pieces of jewelry, and 22 of them were bracelets. What is the experimental probability that the next piece of jewelry sold will be a bracelet? Write your answer as a fraction or whole number.

Answers

the simplified answer is 11/26

pls I need help with my math

pls I need help with my math

Answers

Answer: not sure

Step-by-step explanation:

Answer:

1. False

2. y=5x+9

Step-by-step explanation:

ILL GIVE 50 + 25 POINTS AND BRAINLIEST TO CORRECT ANSWER!!
x is indirectly proportional to y, if x = 32 and y = -10, write the proportional constant and equation. Then if y = -51, find x.
TYVM!!

Answers

Answer: 10

Step-by-step explanation:

add subtract and add again

The correct answer is 10

Oswald told Sarah that 1240×5/6 > 12 for 40 which of the following explains why oswald is correct or incorrect
A Oswald is correct because multiplying always gives you bigger numbers
B Oswald is correct because 5/6 is bigger than one,so that makes it bigger than 1240
C os wald is incorrect because you really divide to work this out, which makes the result smaller
Doswald is incorrect because 5/6 is smaller than 1 and multiplying by less than one gives a smaller number

Answers

Answer:

A, but that isn't really the most mathmatical way to put it, and it might not apply to other equations.

Answer:

A

Step-by-step explanation:

If your smart and can do MATH!!!

If your smart and can do MATH!!!

Answers

Umm, I’m doing this right now as well, not 100% sure, don’t click links!

Answer:

Step-by-step explanation:

Well, first of all the two angles listed on the diagram are alternate exterior angles. Since they are alt exterior angles, they must be congruent to one another. Congruent means: equal or the same.

1. So first I am going to form an equation.

(9x - 5) = (7x - 25)

2. Then I am going to solve.

(9x - 5) = (7x - 25)

3.  First, I am going to add 5 from both sides and solve.

(9x - 5) = (7x - 25)

      +5           +5

--------------------------

     9x = 7x - 30

4. Now I am going to subtract 7x from both sides.

  9x = 7x - 30

  - 7x   -7x

---------------------

  2x = 30

5. I am going to divide 2 from both sides, thus making x = 15

2x - 30

÷ 2   ÷ 2

--------------

x = 15 ( This is x, now all you have to do is plug this into each identified angle.

So, the first identified angle is  130 degrees

The second one is  also 130 degrees.

Remember, they are congruent so they have the same number (degrees

At a recent football game of 8,450 in attendance, 150 people were asked what they prefer on a hot dog. The results are shown.


Ketchup Relish Chili
54 36 60


Based on the data in this sample, how many of the people in attendance would prefer ketchup on a hot dog?
4,225
3,380
3,127
3,042

Answers

By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042

Answer:

By proportion that is:(54/150) * 8450= 54 * 56 1/3= 3042

Step-by-step explanation:

i need to get this right please help

i need to get this right please help

Answers

Answer:

3 x 6

Step-by-step explanation:

Its asking, how did Koda get this answer.

Think about it, on the left u have 3 outside and on top you have 6 outside connect those 2 and you get 18 as your answer.

Don't get confused its just showing step by step on how you can do it and why.

3x 6. im good
at math

A rectangular pyramid and a rectangular prism have the same length, width, and height. If the volume of the rectangular pyramid is 75 cubic centimeters, what is the volume of the rectangular prism in cubic centimeters?

Answers

Answer:

225 cubic centimeters

Step-by-step explanation:

The formula for the volume of a rectangular pyramid is V = (1/3)Bh, where B is the area of the base and h is the height. The base of the rectangular pyramid is a rectangle with the same length and width as the rectangular prism. Let's call the length, width, and height of both shapes "l", "w", and "h", respectively. Then:

V_pyramid = (1/3)B_pyramid * h

75 = (1/3)(lw) * h

We also know that the rectangular prism has the same length, width, and height as the rectangular pyramid, so its volume can be calculated using the formula V_prism = lwh:

V_prism = lwh

V_prism = lwh = l * w * h

Since l = w = h in this case, we can simplify this to:

V_prism = l * w * h = l^3

We can use the equation for the volume of the rectangular pyramid to solve for h:

75 = (1/3)(lw) * h

225 = lw * h

h = 225/(lw)

Substituting this value for h into the equation for the volume of the rectangular prism gives:

V_prism = l^3 = l * w * (225/(lw))

V_prism = 225 cubic centimeters

Therefore, the volume of the rectangular prism is 225 cubic centimeters.

IWILLGIVEBRAINLIESTWHOEVERHELPSME

IWILLGIVEBRAINLIESTWHOEVERHELPSME

Answers

Step-by-step explanation:

1/5= 3/15

2/3= 8/12

5/6= 25/30

8/11= 56/77

3/7= 18/42

Answer:

Step-by-step explanation:

(i) = \(\frac{3}{15}\)
(ii) = \(\frac{8}{12}\)
(iii) = \(\frac{5}{6}\)
(iv) = \(\frac{56}{77}\)
(v) = \(\frac{18}{42}\)
hope this helps

Can someone help me with this problem?

Problem: 1. Use the following number to fill in the missing information in the the table below: 1,205.43

I'm really confused especially from not having school for 2 weeks! Help, please?

Can someone help me with this problem?Problem: 1. Use the following number to fill in the missing information

Answers

Answer:

I put the answer in a picture

Step-by-step explanation:

Can someone help me with this problem?Problem: 1. Use the following number to fill in the missing information

How is the domain of a function related to the numbers in the sequence?
How is the range of the function related to the numbers in the sequence?

How is the domain of a function related to the numbers in the sequence?How is the range of the function

Answers

Answer:

A sequence is a function whose domain is the set of natural numbers or a subset of the natural numbers. We usually use the symbol an to represent a sequence, where n is a natural number and an is the value of the function on n.

Insert images of the plant and the fish in the space provided to arrange the 24 fish and the 18 plants into sets so that each set has the same number of fish and the same number of plants and none are left over. (In each set, the number of plants does not have to be equal to the number of fish.) Write an expression for the total number of fish and plants in each set.

Then

Write an expression for the total number of fish and plants in all the sets using the expression you found in part A.

Answers

Answer:

4:3

Step-by-step explanation:

For every 24 fish there are 18 plants

Simplified: 4:3

Answer:

4:3

Step-by-step explanation:

i'm just guessing :p

Simplify by combining like terms 5/6a+4 1/4a

Answers

Answer:

61/12a

Step-by-step explanation:

convert the mixed number 4 1/4 into a improper fraction which turns into 17/4, you then add the sum of 5/6a + 17/4a which is 61/12a

61/12a should be the correct answer!

how can i mark somone as the BRAINLIEST
whoever answers will..............................................................................marked the BRANLIEST

Answers

On the right side of your screen, there is a table with a dropdown menu.  It says, Brainliest, with a crown above.  

You will see a crown
On the app it will say “mark as brainiest”
Website I think will just be a crown on the question probably a blue crown then yellow once marked as brainiest

help me, please thanks

help me, please thanks

Answers

Answer: 120 feet sqaured

Step-by-step explanation:

Surface area for square pyramid formula: 2bh + b^2

Base = 6  Height = 9

2*6*9+6^2 =

108+12 =

120

Answer:

120 feet squared

Step-by-step explanation:

9/100 =_____%
please answer and explain! Thanks!

Answers

Answer:

.09

Step-by-step explanation:

It is this because if you divide 9 by 100 it will equal .09.

Please Help me! I am clueless

Please Help me! I am clueless

Answers

Firstly, you have to find the area of the whole shape. After that, you subtract that from the area of the individual triangle to get your answer.

The whole shape is a rectangle, with a length of 6 and a width of 7.
To find the area, multiply 6 by 7=42yd^2

The area of the entire shape is 42yd^2

Now, the vertical 4yd side plus the height of the dotted triangle will equal 6yd.
So the height of the dotted triangle is 6-4=2yd.

The horizontal 4yd side plus the base of the dotted triangle will equal 7yd.
So the base of the dotted triangle is 7-4=3yd.

Formula for area of triangle: 1/2 x base x height
1/2 x 4 x 3= 6yd^2

The area of the dotted triangle is 6yd^2

Now subtract the area of the whole shape by the area of the dotted triangle to get the shaded region.

42-6= 36yd^2

Area of shaded region: 36yd^2 (i think)

(so sorry if i’m wrong!!!)

39 yds squared
make into trapezoid and rectangle
rectangle 4*6=24
trapezoid (4+6/2)3=15
15+24=39

The speed of the jet Alyssa flew on from Boston to London was 480 mph. On her return flight, the speed of the jet was 600 mph with a tail wind. What was Alyssa's average speed on the round trip? Round your answer to one decimal place.

P.S: The answer is not 540

Answers

Answer:

the ansere is -20

Step-by-step explana

The speed is given by the arithmetic mean. Then the jet Alyssa's average speed on the round trip is 540.

What is the average speed?

The total distance covered by the particle or the body in a total time is called average speed. It is a scalar quantity. It is the ratio of distance to time.

We know that the average speed formula

\(\rm v_{a} = \dfrac{v_1+ v_2}{2}\)

The speed of the jet Alyssa flew on from Boston to London was 480 mph.

On her return flight, the speed of the jet was 600 mph with a tailwind.

Then the average speed of the jet will be

\(\rm v_{a} = \dfrac{v_1+ v_2}{2}\\\\v_{a} = \dfrac{480 + 600}{2}\\\\v_{a} = 540\ mph\)

More about the average speed link is given below.

https://brainly.com/question/7359669

Tell whether each relation is a function. Explain how you know.
3. {(1, 5), (3, 7), (6, 5), (9, 8}

4. {(1, 2, (1, 8), (3, 6), (4, 8)}

Answers

Answer: None of them are a function

Step-by-step explanation: they don't relate

3.) This is a function because all of the x values are different

4.) This is not a function because their are two 1’s in the x value

There are two numbers. Their GCF is 5. Their LCM is 150. The first number is 25. What is the second number?

There are no choices

Answers

Answer:

6

Step-by-step explanation:

Answer:

if 150 is a multiple, then all of the factors of the second number must also be factors of 150 which are: 5 (twice), 2 and 3.

Since 150 is the LCM, all of those factors must be either in our number or 25. Since 25 has just 5 (twice) as a factor, both 2 and 3 must be factors.

The remaining question is how many 5s we have. Since the GCF with 25 is 5, our number must exactly one 5.

So the factors of our number are: 2, 3, and 5. There is one number with exactly these factors = 2*3*5 = 30.

Need answer as soon as possible or today please and thank you:)

Need answer as soon as possible or today please and thank you:)
Need answer as soon as possible or today please and thank you:)
Need answer as soon as possible or today please and thank you:)

Answers

Answer: 85

Step-by-step explanation: 85 DB is the closest approximation of 12 meters.

85.........................................

can you please tell me 33/55 as a decimal?

Answers

33/55 as a decimal is 0.6

33/55 as a decimal is 0.6.
Divide 33 by 55 to get 0.6
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