Mathematics High School

In the following equations, what would you multiply the second equation to
eliminate the "y"? *(PLEASE I WILL GIVE BRAINLIEST!!)

3x + y = 20
x + y = 12

1) -1

2) 1

3) -3

4) 3

Answers

Answer 1

Answer:

-1

Step-by-step explanation:

Related Questions

Find x.
I need help please


Answers

Answer:

[tex] x = 4 \sqrt{3} [/tex]

Step-by-step explanation:

By geometric mean theorem and Pythagoras theorem:

[tex] {x}^{2} = { (\sqrt{8 \times 4} )}^{2} + {4}^{2} \\ \\ {x}^{2} = { (\sqrt{32} )}^{2} + {4}^{2} \\ \\ {x}^{2} = 32 + 16 \\ \\ {x}^{2} = 48 \\ \\ x = \sqrt{48} \\ \\ x = 4 \sqrt{3} [/tex]

On a snow day, Owen created two snowmen in his backyard. Snowman A was built to
a height of 60 inches and Snowman B was built to a height of 42 inches. The next day,
the temperature increased and both snowmen began to melt. At sunrise, Snowman
A's height decrease by 6 inches per hour and Snowman B's height decreased by 3
inches per hour. Let A represent the height of Snowman At hours after sunrise and
let B represent the height of Snowman Bt hours after sunrise. Graph each function
and determine the interval of time, t, when Snowman A is taller than Snowman B

Answers

Answer:

The equations for each function:

A(t) = 60 - 6tB(t) = 42 - 3t

The lines plotted, see attached

The point at which both the snowmen have same height:

60 - 6t = 42 - 3t6t - 3t = 60 - 423t = 18t = 6

The required interval is

t = [0, 6)

BRAINLIEST Blue whales eat an average of 5,000 pounds of fish daily, with a standard deviation of 850 pounds. Approximately what percentage of blue whales eat more than 6,700 pounds of fish? 2.5% 5% 15.87% 31.74%

Answers

Answer:

I think it is C 15.87%                      

Step-by-step explanation:

Select the correct answer. which expression is in its simplest form?

Answers

The answer is a the first one

Help
Determine which is the better buy. Show all work! Explain.

Hand soap: A B
Cost: 1 4

Ounces 8 50

Answers

Answer:

Soap A is a better buy.

Step-by-step explanation:

Soap A is 1 dollar with 42 more ounces.

Soap B is 4 dollars with 42 ounces less.

You should be paying 1 dollar for 42 ounces more than 4 dollars for 42 ounces less.

Let me know if that helps!

The drawing of a building, shown below, has a scale of 2 inches to 8.5 feet.
What is the actual height, in feet, of the house?

Answers

Answer:

36 1/8 feet

Step-by-step explanation:

x = height of house in feet

2"/8.5' = 8/5"/x

cross-multiply:

2x = 72.25

x = 36.125 or 36 1/8

Translate the sentence into an equation.
Two more than the quotient of a number and 9 is equal to 8.

Answers

Answer:

it would be (9/n )+ 2 = 8

Step-by-step explanation:

I hope this is right :)))

What is the measure of ∡U in the figure shown? ∘

Answers

Answer:

∠ U = 70°

Step-by-step explanation:

The exterior angle of a triangle is equal to the sum of the 2 opposite interior angles.

120° is an exterior angle of the circle , then

∠ U + 50° = 120° ( subtract 50° from both sides )

∠ U = 70°

Which is closest to the area of the figure?

A 96 square units
B 86 square units
C 80 square units
D 72 square units

Answers

D 72 square units..........
It’s D72 square units

HELP PLZ DUE RN BRAINIEST TO WHOEVER RIGHT

Answers

Answer: x=0.25

Step-by-step explanation: 1−8x=−16x2

Simplify both sides of the equation.

−8x+1=−16x2

Subtract -16x^2 from both sides.

−8x+1−−16x2=−16x2−−16x2

16x2−8x+1=0

16x2+−8x+1=0

Use quadratic formula with a=16, b=-8, c=1.

x=

−b±√b2−4ac

2a

x=

−(−8)±√(−8)2−4(16)(1)

2(16)

x=

8±√0

32

x=0.25

Question Help The temperature in a greenhouse should be 70 degrees or higher. One morning, the heater stopped working. The temperature dropped 5 degrees before someone fixed the heater. The temperature was still at least 70 degrees when the heater started working again. How can you best describe the temperature in the greenhouse before the heater stopped working? I need help please​

Answers

Answer:

the temperature was still suitable for the greenhouse

Step-by-step explanation:

what affects the mobility of factor of production​

Answers

Answer:

Domestic factor mobility. refers to the ease with which productive factors like labor, capital, land, natural resources, and so on can be reallocated across sectors within the domestic economy. Different degrees of mobility arise because there are different costs associated with moving factors between industries.

find the area of the rhombus. 19-24
3.6
2.5
7.25in

Answers

Answer:

To answer this question I need the values of the rhombus. like the p and the q.

Step-by-step explanation:

Which of the following is/are correct in the case of free fall motion?

(I) Free fall is a linear motion.
(II) Free fall is a uniformly accelerated motion.
(III) Free fall is a motion under gravity alone.

A) I and II
B) I only
C) II only
D) I, II, and III

Answers

Answer:

D) all are true

I think it's helps you

Find the 13th term of the arithmetic sequence – 2x + 8, 4x + 2, 10x – 4, ...
The other answer I found for this was wrong pls help !!

Answers


-2x+12*6x+8-6*12=70x-64
the answer is actually 70x-64 hope this helped you :)

Christina is making a necklace using beads. She has 20 red, 14 blue, 10 purple, 28 green, and 8 yellow beads. She randomly chooses a bead to start the necklace. What is the probability of Christina choosing a bead that is not green?

Answers

Answer: 13/20

Step-by-step explanation:

Total number of beads: 20+14+10+28+8=80

Green beads out of the total 80: 28

Non-green beads out of the total 80: 80-28=52

The probability of Christina choosing a bead that is not green is the number if non-green beads divided by the total number of beads, so 52/80, which simplifies to 13/20

The probability of Christina choosing a bead that is not green is the number if non-green beads divided by the total number of beads is 13/20.

What is the probability?

It is a branch of mathematics that deals with the occurrence of a random event. The value is expressed from zero to one.

Total number of beads

=20+14+10+28+8

=80

Green beads out of the total 80: 28

Non-green beads out of the total 80:

=80-28

=52

The probability of Christina choosing a bead that is not green is the number if non-green beads divided by the total number of beads, so 52/80, which simplifies to 13/20.

To learn more about the probability visit:

https://brainly.com/question/25870256

#SPJ2

-1/2(-3y+10) combing like terms

Answers

Answer:

3/2y - 5

Step-by-step explanation:

1.5y-5 is the answer

The perimeter of a rectangle is 734 centimeters, and one of the dimensions is 116 centimeters. What is the length of the other dimension?

Answers

Answer:

251cm

Step-by-step explanation:

Math help me please/////

Answers

Answer:

C.

Step-by-step explanation:

A and D are incorrect because there is one outlier in the lower graph, and there are no signs of clusters on the graph, making B wrong as well. This leaves the only answer, C, which makes sense because there is a positive correlation of a line.

The vertices of a figure are given. Draw the figure and its image after a dilation with the given scale factor. Then identify the type of dilation.














































































































































The vertices of a figure are given. Draw the figure and its image after a dilation with the given scale factor. Then identify the type of dilation.

Answers

Answer:

what is the picture????

Find the area of the given shape?

Answers

Answer:

28

Step-by-step explanation:

Area for a triangle is

1/2(bxh) B-Base H-Height

So

1/2(7x8)

1/2(56)

=28

Can anyone help? I’m sorry I’m bad at math-

Answers

3. 22 % and 40% is the answer.

Please help :)

A sample of 60 Grade 9 students' ages was obtained to estimate the mean age of all Grade 9 students. X = 15.3 years and the population variance is 16.

a. What is the point estimate for μ?

b. Find the 95% confidence interval for μ.

C. Find the 99% confidence interval for μ.

d. What conclusions can you make based on each estimate?

(No links or you get reported)​

Answers

i linked the ACTUAL answer in the comments on a website i found to the answer to your question. get the app socratic it helps. it’s legit i promise

7. Find the area of PQRS.
S(-4,5)
R(7,-1)
P-4,-34
Q(7,-9)

Answers

find the distance of each and then you’ll get the measurements also putting the points on the graph would help

Select all the expressions that equal 6-10 Write out each solution.
A. 65 6²
5
B.
C. (6)
63
D.
67
E.

Answers

Answer:

i think c and e and d (im sorry if its wrong)

Which congruency theorem can be used to prove
that AABDADCA?
B
O SSS
OASA
OSAS
0 AAS

Answers

Answer:

SAS

Step-by-step explanation:

Given: Two triangles ΔABD and ΔDCA,  

We have, AD=AD (normal)  

∠A=∠A (Given)  

BA=CD (Sides inverse to rise to points are consistently equivalent)  

With the SAS rule of congruency,  

ΔABD≅ΔDCA

Brainliest?

I have 10 fish but 3 drown how many are left HURRY

Answers

fish cant drown duhhhj

there are still 10 fish.

Find the volume of the sphere.
Either enter an exact answer in terms of it or use 3.14 for T.
6
units

Answers

Answer:

Volume = 904.32 units³

Step-by-step explanation:

Volume = 4/3πr³ = 4/3(3.14)(6³) = 904.32

please help me !!!!!!!!!

Answers

Ywygdvd hdvsvehwjsgehegwvq

Answer:

D. The probability of selecting an orange is ³/₅.

Step-by-step explanation:

A is incorrect because there would be 4 apples combined (3 from bag one, 1 from bag two). That makes the chance of selecting an apple 2/5 (40%), not 3/10 (30%).

B & C are incorrect because 4/10 (40%) is less than 6/10 (60%)

That leaves D, which state that you have a 60% (3/5) chance selecting an orange, as our answer. That is correct as 3/5 = 6/10 = 60%.

4. A cone has a diameter of 6 inches and a height of 6 inches. Find the volume of the cone to the nearest tenth.
Use 3.14 for
a 6.7 in.'
c. 56.5 in.
b. 26.2 in.
d. 91.5 in.

Answers

Answer:

56.5 in^2

Step-by-step explanation:

The volume of a cone is π[tex]r^{2}[/tex]h/3. The radius is d/2=6/2=3

V=(3.14 x [tex]3^{2}[/tex] x 6)/3

 =(3.14 x 54)/3

 =169.56/3

 =56.52

the answer is c. 56.5

r-6/2
h-6

formula- pie times radius squared times height divided by 3

pie x 3^2 x 6/3
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