Mathematics High School


Tell which equation you would choose to solve for one of the variables. Explain.
x+ 4y = 30
x – 2y = 0

Answers

Answer 1

Answer:

i would choose to solve x+2y=0 because it is simple and ez

Step-by-step explanation:

i took test and got 100 % brainliest plz

Related Questions

Can someone help me with this? There's multiple images btw.

Answers

Answer:

part a- c dollars saved per month

part b y=10x

Step-by-step explanation:

i pretty sure this is the answer, anyone else let me know if i did this wrong

Find the x intercept for 3x - y = 6​

Answers

3x - y = 6

X= 2

Hopefully this is correctly :)

Answer: 3x+0=6

3x=6

3x/3=6/3

cancel the common factor of 3

3x/3=6/3

divide x by 1

x=6/3

x=2

(2,0)

Step-by-step explanation:

4. If the area of a semi-circle is 100.48 square inches, what is the radius
of the circle ? *
A) 16 inches
B) 8 inches
C) 4 inches
D) 2 inches

Answers

If we take the area which is 100.48, and multiply it by 2 because it’s obviously a semi-circle and we’re looking for the radius, we will get 200.96. Then we divide it by 3.14 to get 64. Then square root 64 to get 8. So it’s B.

PLEASE HELP!!!! ANSWER FAST

Answers

Step-by-step explanation:

[tex] {d}^{2} = {5}^{2} + {5}^{2} \\ {d}^{2} = 50 \\ d = 5 \sqrt{2} \\ [/tex]

[tex] \tan(60) = \frac{4}{c} \\ c = \frac{4}{ \tan(60) } = 2.3[/tex]

Melinda is trying to balance her checkbook. The latest statement from the bank reports that the balance in her account is $763.53. However, the balance in Melinda's checkbook is $985.21. Round each number to the nearest hundred and choose the best estimate of the difference between these two dollar amounts.

Answers

Answer:

$200

Step-by-step explanation:

I just took away the tens and ones from the 2 numbers, so you have 900 and 700, subtract both of those and you get 200, BAM! hope this helped it's my first time doin thiS :)

A sport bag used to cost $40, then the store decides to change the cost to $52. What is the mark up? Write your answer like this 00% but instead of zeros, put the percent you found.

Answers

Answer: increased by 30%

Step-by-step explanation:

40*0.3=12 and 40+12= $52

What is the value of x in the equation 2.5x = 100?
A. 4
B. 5
C. 40
D. 80

Answers

The value of x in the equation is 40.
c) 40 the value of x = 40

3/5b + (-1/2) = 1/4
solve for the variable.

Answers

Answer:

Step-by-step explanation:

(3b)/5-1/2=1/4

(3b)/5=1/4+1/2

(3b)/5=1/4+(1/2)(2/2)

(3b)/5=1/4+2/4

(3b)/5=3/4

3b=15/4

b=5/4

b=1.25

pls help need it ASAP

Answers

Answer:

X=3 Y=10

Step-by-step explanation:

Answer:

x=6 and y=-4

Step-by-step explanation:

4x+y=20

x-y=10

5x=30

x=30/5

x=6

4x+y=20

4(6)+y=20

24+y=20

y=20-24

y=-4

what is the probability of rolling a dice twice and getting a six?

Answers

[tex] \huge \boxed{ \fcolorbox{black}{aqua}{Answer}}[/tex]

There are a total of 6 x 6 = 36 possible outcomes when a fair die is rolled twice. Of the 36 possible outcomes, there are 6 doubles: 1-1, 2-2, 3-3, 4-4, 5-5, and 6-6. Thus, the probability of getting a double is 6/36 = 1/6.

1/6 if you are looking for it in fraction form. Because there are 6 side on a dice, and every one of them count as one sixth of the dice. So 1/6 would be your final answer.

The following are the winning times, in seconds, for the Kentucky Derby from 1997 to 2016. Select the boxplot that
represents the data.
122.4, 124.2, 123.2, 121, 119.97, 121.1, 121.19, 124.06, 122.75, 121.36, 122.17, 121.82, 122.66, 124.04, 122.04,
121.83, 122.89, 123.66, 123.02, 121.31
HIH
H+
118
122
126
Time (sec)
HT
118 122 126
Time (sec)
118
122 126
Time (sec)

Answers

Answer:

The answer is A

Step-by-step explanation:

Just did the problem.

Answer:

The answer A is correct.

The first plot.

In the given right triangle, find the missing length to the nearest tenth.

a. 6.1 ft

b.21.1 ft

c.7.1 ft

d.21.4 ft

Answers

Answer:

C

Step-by-step explanation:

I think

what is the volume PLEASE HELP

Answers

Answer:

270 m

Step-by-step explanation:

You would do 10 times 9 which is 90 then you would do half of 6 which is 3 then you do 90 times 3 which is  and thats your answer.

Look at the picture and thanks

Answers

Answer:

B

Step-by-step explanation:

I think so I am sorry if I am wrong

if f (x)= x2- 2x : which of the following is the value of f (4)

Answers

62031549163916391638173163

Help me please , will mark brainliest

Answers

3000? maybe good luck

Answer:

6,000

Step-by-step explanation:

To find the volume, you have to solve the width x length x height.

So, 1 of the containers is 20(W) x 15(L) x 10(H) which equals to a volume of 3,000.Then we have another container with the same dimensions. That means we will add 3,000 because it's the same. 3,000 + 3,000 = 6,000

Hope this helped :)

PLZ HELP!!!I’m having trouble

Answers

Answer:

41.41

Step-by-step explanation:

cosA=6/8=3/4

I used a calculator

3
Select the correct answer.
A
1. research outline
2. test
3. homework
4. essay

B
1. homework
2. test
3. essay
4. research outline

C
1. homework
2. research outline
3. test
4. essay

D
1. test
2. essay
3. research outline
4. homework

Fran is struggling with her priorities for the next few weeks: homework due tomorrow, an essay due in two weeks, a research outline due by the end of the week, and a test next week. How should she list her priorities, starting with the most important task?

Answers

Answer:

C

1. homework

2. research outline

3. test

4. essay

Step-by-step explanation:

The tasks will be prioritized based on the ones with the closest date to today.

Her homework due tomorrow, therefore it is the first priority.

Her research outline due by the end of the week, therefore it is the second priority.

She has a test next week, and therefore it is the third priority.

Then finally, in 2 weeks, she has an essay and as such it should be the fourth priority.

The only option that has these tasks arranged in the correct order of priority based on the most important tasks as I have listed is Option C.

WILL GIVE BRAINLIEST AND 20 POINTS

Answers

Answer:

The fourth opition!

Step-by-step explanation:

180-2(72)=x. The reason being it says TWO angels of 72 and if you times that by two and subtract by 180 youll get the missing angle!!

A cylindrical soup can has a radius of 1.8 in. and is 6.7 in. tall. Find the volume of the can.

Answers

Initial considerationsradius = 1.8 intall = 6.7 inVolume?

Resolution

Volume = base area x tall

base area = π x (1.8in)²

base area = 10.179 in²

Volume = 10.179 in² x 6.7 in

Volume = 68.198 in³

Answer

the volume is 68.198 in³

A right rectangular prism has a length of 6 centimeters, a width of 2 centimeters, and
a height of 5 centimeters. What is the surface area of the prism?
104 sq cm
120 sq cm
60 sq cm
72 sq cm

Answers

Answer:

104cm^2

Step-by-step explanation:

Given data

Length= 6cm

Width=2cm

Height= 5cm

The expression for the surface area of a rectangular prism is given as

SA=2lw+2lh+2hw

Substitute

SA=2*6*2+2*6*5+2*5*2

SA= 24+60+20

SA=104cm^2

Hence, the SA is  104cm^2

Gavin drank 3/4 of a liter of orange juice from the container, which was 3/8 of the orange juice that was originally in the container. How much orange juice was originally in the container?​

Answers

Answer:

Originally there were 2 liters.

Step-by-step explanation:

--

3/8 of the orange juice = 3/4 liter

1/8 of the orange juice = 3/4 ÷ 3

1/8 of the orange juice = 3/4 x 1/3

1/8 of the orange juice = 1/4 liter

Find 8/8, which is one whole.

1/8 of the orange juice = 1/4 liter

8/8 of the orange juice = 1/4 x 8

8/8 of the orange juice = 2 liters

There were originally 2 liters of orange juice in the container

-6y + 12 = - 66
I feel like I lost my brain today I can’t think right... can you help me out

Answers

Answer:

[tex] - 6y + 12 = - 66 \\ - 6y = - 66 - 12 \\ - 6y = - 78 \\ y = - \frac{ - 78}{ - 6} \\ y = 13[/tex]

Answer:

y = 13

Step-by-step explanation:

i just solved this now, but I'm pretty sure it's correct :)

Which figures appear to be congruent?

An image of 5 triangles on a 14 by 12 grid is shown.Triangle 1 has a base that is 4 units long. The upper vertex is 4 units above the midpoint of the base. To the right, triangle 2 has a horizontal leg that is 3.5 units long and a vertical leg that is 4 units long. A small square is positioned in the triangle at the lower left vertex. Below triangle 1, triangle 3 has a horizontal leg that is 3.5 units long and a vertical leg that is 4 units long. A small square is positioned inside this triangle at the upper right vertex. Triangle 4 is toward the center of the grid. It has a horizontal leg that is 1 unit long and a vertical leg that is 4 units long. A small square is positioned inside this triangle at the upper right vertex. Triangle 5 is to the lower right. It has a horizontal leg that is 6 units long and a vertical leg that is 4 units long. A small square is positioned inside this triangle at the lower left vertex.
A. 1, 2, and 3
B. 1 and 4
C. 1 and 5
D. 2 and 3

Answers

Answer:

your answer would be D. 2 and 3

Please I need some one to at least explain one of them so I can know how to do the rest

Answers

Answer:

Hope that answers your question

When simplified, the expression shown below can be written as which choice shown?

(x+3)(x-3)-(x+5)(x-5)

(1) 2(x-17)
(3) -34
(2) 2(x-8)
(4) 16

Please help with question!

Answers

(3) -34 is your answer

Jared is creating a flower garden in the shape of a triangle. Which could be the dimensions of the garden in feet?

Answers

Answer:

3 by 7 by 9

Step-by-step explanation:

Question in the picture

Answers

Answer:

y = -5x + 7

Step-by-step explanation:

Since the line you are looking for is parallel to y = -5x + 4, it will have a slope of -5

Now use the point-slope form to continue

y - 2 = -5(x - 1)

y - 2 = - 5x + 5

y = -5x + 7

PLEASE HELP see picture


66 pts
LOGARITHMIC

Answers

Ln(x) should be the answer

Find the area of the sector of the circle given the diameter of the circle is 16 cm, and the central angle of the sector is 45 degrees. Round to the nearest tenth. Use 3.14 for pi.

Answers

Answer: 25.1 cm^2

Step-by-step explanation:

(45/360) x 3.14 x 8^2

Answer

47

Step-by-step explanation:

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