Solve the system of equation by elimination.

x+2y= -7
-x-2y=8

A. (8,7)
B. No solution
C. (-7,8)
D. (-8,7)

If you can, please explain step by step:)

Answers

Answer 1
B.) no solution......

Related Questions

The stock of Company A lost 1.5% today to $19.70. What was the opening price of the stock in the beginning of the day?

Answers

Answer:

23.78

........................

There are 26 letters in the
alphabet. What is the probability
that a letter chosen at random is
not in the word ENCYCLOPEDIA?

Answers

Answer:

1/12 chance

Step-by-step explanation:

Encyclopedia

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

The bold letters are the letters in the word Encyclopedia.

The sixth-grade chorus has a boy-to-girl ratio of 3:8. Which of the following ratios is equivalent to this ratio?

help plzzz due in 15 min i have moe questions left

Answers

What are the answers? Also, an equivalent ratio would be multiplying/dividing both the 3 and the 8 by the same number

HELP PLEASEEEEEEEEEEEEEEEEEEEEEE ITS A GRADE

Answers

Answer:

as x increases, y increses

the parabola grows wider and taller, meaning that the y and x values will both increase:)

Answer:

B for the first graph (as x increases, y increases), D for the second graph (as x increases, y decreases), D for the third graph (minimum at y = -9), and A for the forth graph (the graph opens up because the a value in the equation is positive)

Solve.
6x - 28 =-76. X=

Answers

6x-28=-76
+28 +28
6x = -48
-48 divided by 6
X=-8

Answer:

6x-28+28=-76+28

6x=-48

6x÷6=x

-48÷6 =-8

x=-8

Step-by-step explanation:

correct me or wrong

A concession stand sells hamburgers. The revenue from the hamburgers is (30x + 45) dollars. The price of a hamburger is $5. Write an expression that represents the number of hamburgers sold.

Answers

Answer:

5(6x+9)

Step-by-step explanation:

(30x+45)

30=(5)6x

45=(5)9

5(6x+9)

Graph △RST with vertices R(4, 1), S(7, 3), and T(6, 4) and its image after the glide reflection.

Translation: (x, y)→(x−3, y)
Reflection: in the line y=−1

Answers

Answer:

Step-by-step explanation:

Points R(4,1) S(7,3) T(6,4) after translation

R(4-3, 1) S(7-3, 3) T(6-3, 4)

R'(1, 1) S'(4, 3) T'(3, 4)

Points R'(1, 1) S'(4, 3) T'(3, 4) after reflection

R''(1, -3) S''(4, -5) T''(3, -6)

HELP PLS! It’s question 15

Answers

Answer:

A: C = 15N

Step-by-step explanation:

30/2 = 15 (the cost of 1 class)

find the values of a,b, or c for y = x^2 - 9x +18 please help!!

Answers

Answer:

It's X^1 = 3, x^2 =6  

Step-by-step explanation:

Helppppppp:))))))).......

Answers

Answer:

y=6 is the correct answer

WILL GIVE BRAINLIEST. Just fill in the blanks

Answers

Answer:

a) 5

b) 3

c) 1

d) -1

Step-by-step explanation:

Answers:1.) [tex]\bold{y=5}[/tex]2.) [tex]\bold{y=3}[/tex]3.) [tex]\bold{y=1}[/tex]4.) [tex]\bold{y=-1}[/tex]

Solution Steps:

______________________________

1.) To figure out y, you have to plug in the x value into the equation given:

 [tex]y=-2(-1)+3[/tex]

Multiply −2 and −1 to get 2. Add 2 and 3 to get 5. [tex]y=5[/tex]

2.) To figure out y, you have to plug in the x value into the equation given:

 [tex]y=-2(0)+3[/tex]

Multiply −2 and 0 to get 0. Add 0 and 3 to get 3. [tex]y=3[/tex]

3.) To figure out y, you have to plug in the x value into the equation given:

 [tex]y=-2(1)+3[/tex]

Multiply −2 and 1 to get −2. Add −2 and 3 to get 1. [tex]y=1[/tex]

4.) To figure out y, you have to plug in the x value into the equation given:

 [tex]y=-2(2)+3[/tex]

Multiply −2 and 2 to get −4. Add −4 and 3 to get −1. [tex]y=-1[/tex]

______________________________

You flip a coin 12 times. What is the probability of getting only one tails in all 12 tries?

Answers are in standard notation

Answers

Answer: Aproxamatly  18.999999999999999

Step-by-step explanation:

please no fake answers ,I need help:)

Answers

Answer:

A. 2.10b + 12.99 = 21.39; 4 bottles

Step-by-step explanation:

The b represents bottles of water, at the end of the equation. If each bottle is $2.10, and there were 4 bottles brought, $2.10 * 4 = $8.40, and $8.40 + $12.99 is $21.39.

A: because 21.39 minus 12.99 equals 8.4 which is 8 dollars and 40 cents. And 8.4 divided by 2.10 is 4. HOPE THIS HELPS!

An ice cream shops uses 28 gallons of milk daily. How many cups of milik does the ice cream shop use daily
448 cups
44 cups
112 cups
0328 049

Answers

448... hope that helps lol
The answer is 448. Hope that helps

help i asked this 3 times i will do brainliest no troll answers!

Answers

Answer:

Number two

Exact Form:

11/2

Decimal Form:

5.5

Mixed Number Form:

5

1/2

Step-by-step explanation:

sorry I do not know one hope this helps please mark brainliest

Can someone please explain this to me and help me

Answers

Answer:

ok

Step-by-step explanation:

Triangles have to = 180


Which choice could be used in proving that the given triangles are similar?

Answers

Answer: . To prove triangles are similar, you need to prove two pairs of corresponding angles are congruent

Step-by-step explanation:

SSS similarity postulate

The SSS similarity postulate says that if the lengths of the corresponding sides of two triangles are proportional then the triangles must be similar.

In the given figure , we have two triangles ΔABC and ΔXYZ such that the corresponding sides of both the triangles are proportional.

i.e.

Then by SSS-similarity criteria , we have

ΔABC ≈ ΔXYZ

BRAINLIEST PLEASE????

Answer: the answer is A

Step-by-step explanation: I just took it on usa test prep

The LA Dodgers hit the most homeruns in 2014. The number of homeruns accounted for 6% of the entire major League baseball homerun count. If 583 total homeruns were hit, approximately how manu did the LA Didgers hit

Answers

Answer:

35 homeruns

Step-by-step explanation:

583*0.06=349.8-->34.98-->35

Answer:

The LA Dodgers hit 35 homeruns approximately in the league in year 2014.

Step-by-step explanation:

Given that:

Percentage of homeruns hit by LA Dodgers = 6% of the entire League

Total homeruns hit in the league = 583 homeruns

Homeruns hit by LA Dodgers = [tex]\frac{6}{100}*583[/tex]

Homeruns hit by LA Dodgers = 0.06 * 583

Homeruns hit by LA Dodgers = 34.98

Hence,

The LA Dodgers hit 35 homeruns approximately in the league in year 2014.

Jay has spent 3/8 of his life working for his current company. If Jay has been 8 3working for his current company for 15 years, how old is he?

Answers

Answer:

40 years old

Step-by-step explanation:

If Jay has spent 3/8 of his life working for his current company and it is stated that he has been at the current company for 15 years, we can divide 15 years by 3 to find out how much a single part of the fraction (1/8) is.

15 / 3 = 5 years

5 years = 1/8

Now that we know how many years is a single part of his life we simply multiply this value by 8 to calculate how many years would equal his total life or in other words how old Jay currently is.

5 years * 8 = 40 years old

can i get the answer. If i do I will get into harvard

Answers

omg LOL but it’s 2 1/10

Answer:

its ur fault that you did it late

Step-by-step explanation:

but the answer is  2 1/9

TEST QUESTION: Jane is making bows for the holidays. One bow requires 23 yard of ribbon. Jane has 13 yards of ribbon. What is the GREATEST number of projects Jane can complete with this ribbon? ​

Answers

Answer:

this makes no sense she can make any bows

Complete the conversion. Enter your answer in the box
8 pt =
С

Answers

It is one gallon because in half of a gallon it is 4 pt and 8pt = one gallon

please help I will have to do 7th-grade again if I don't pass I need help
please answer the questions below so I don't fail
it is do tomorrow

Answers

Answer:

number7 9452.425 and number 4 2 hrs

Step-by-step explanation:

85+15 is 100 so to get one hundred percent you alr have 85 but you need to find 15

find what 30percent of 400 it is 120 if hes going 60 mph:

120/60 is 2

so it took him 2 hrs

Wich ordered pair is a solution to the followimg inequality?
[tex]y\leq \frac{2}{5}x-2[/tex]

(5,0)
(0,5)
(-2,5)
(-5,2)

Answers

Answer:

Option A: (5,0)

Step-by-step explanation:

Given

[tex]y \leq \frac{2}{5}x-2[/tex]

Required

Select an ordered pair

Option A: (5,0)

This means

[tex]x = 5[/tex] [tex]y = 0[/tex]

Substitute these values in [tex]y \leq \frac{2}{5}x-2[/tex]

[tex]0 \leq \frac{2}{5} * 5 - 2[/tex]

[tex]0 \leq 2 - 2[/tex]

[tex]0 \leq 0[/tex]

This is a true statement.

Option B: (0,5)

This means

[tex]x = 0[/tex]   [tex]y = 5[/tex]

Substitute these values in [tex]y \leq \frac{2}{5}x-2[/tex]

[tex]5 \leq \frac{2}{5}* 0 -2[/tex]

[tex]5 \leq 0 -2[/tex]

[tex]5 \leq -2[/tex]

This is a false statement.

Option C: (-2,5)

This means

[tex]x=-2[/tex]   [tex]y = 5[/tex]

Substitute these values in [tex]y \leq \frac{2}{5}x-2[/tex]

[tex]5 \leq \frac{2}{5}* -2 -2[/tex]

[tex]5 \leq \frac{-4}{5} -2[/tex]

[tex]5 \leq \frac{-4-10}{5}[/tex]

[tex]5 \leq \frac{-14}{5}[/tex]

[tex]5 \leq -2.8[/tex]

This is a false statement.

Option D: (-5,2)

This means

[tex]x=-5[/tex]   [tex]y = 2[/tex]

Substitute these values in [tex]y \leq \frac{2}{5}x-2[/tex]

[tex]2 \leq \frac{2}{5}* -5 -2[/tex]

[tex]2 \leq -2 -2[/tex]

[tex]2 \leq -4[/tex]

This is a false statement.

Only option A represents a true statement,

Hence, option A is a solution to the inequality

A jar contains 12 pink, 8 yellow, 6 blue and 10 green jelly beans. If a Jelly Bean is
chosen at random, find each probability as a DECIMAL rounded to the nearest
HUNDREDTHS place.

Answers

Answer:

Pink: 0.33

Yellow: 0.22

Blue: 1.67

Green: 0.28

Step-by-step explanation:

Total of Jelly Beans: 36

Pink: [tex]\frac{12}{36}[/tex] = 0.33

Yellow: [tex]\frac{8}{36}[/tex] = 0.22

Blue: [tex]\frac{6}{36}[/tex] = 1.67

Green: [tex]\frac{10}{36}[/tex] = 0.28

A quality control engineer is interested in estimating the proportion of defective items coming off a production line. In a sample of 100 items, 55 are defective. The lower bound of a 99% confidence interval for the proportion of defectives is ________.

Answers

Answer:

The lower bound of a 99% C.I for the proportion of defectives = 0.422

Step-by-step explanation:

From the given information:

The point estimate = sample proportion [tex]\hat p[/tex]

[tex]\hat p = \dfrac{x}{n}[/tex]

[tex]\hat p = \dfrac{55}{100}[/tex]

[tex]\hat p[/tex] = 0.55

At Confidence interval of 99%, the level of significance = 1 - 0.99

= 0.01

[tex]Z_{\alpha/2} =Z_{0.01/2} \\ \\ = Z_{0.005} = 2.576[/tex]

Then the margin of error [tex]E = Z_{\alpha/2} \times \sqrt{\dfrac{\hat p(1-\hat p)}{n}}[/tex]

[tex]E = 2.576 \times \sqrt{\dfrac{0.55(1-0.55)}{100}}[/tex]

[tex]E = 2.576 \times \sqrt{\dfrac{0.2475}{100}}[/tex]

[tex]E = 2.576 \times0.04975[/tex]

E = 0.128156

E ≅ 0.128

At 99% C.I for the population proportion p is: [tex]\hat p - E[/tex]

= 0.55 - 0.128

= 0.422

Thus, the lower bound of a 99% C.I for the proportion of defectives = 0.422

Solve for w. You must write your answer in fully simplified form.
19 = -8w

Answers

Answer:

The answer is 11

y = 3x + 3 using a
{-2, 1, 2}

Answers

Answer:

y = 3x + 3 using a

{-2, 1, 2}

Step-by-step explanation:

The color distribution of Skittles is the following: 10% blue, orange, and green each, 23.3333% yellow, red, and purple each. In a bag, there were 137 red Skittles, 39 orange ones, 130 yellow ones, 39 green ones, 43 blue ones and 112 purple ones. Do the Skittles in the bag match the required color distribution?

Answers

Answer:

No

Step-by-step explanation:

Given that:

Percentage of blue, orange and green = 10%

Percentage of yellow, red and purple = 23.3333%

Number of skittles in bag by color :

Red = 137

Orange = 39

Yellow = 130

Green = 39

Blue = 43

Purple = 112

According to the color distribution :

Number of blue, orange and green should be the same and also number of yellow, red and purple skittles must be the same.

Total number of skittles :

(137 + 39 + 130 + 39 + 43 + 112) = 500

10% of the total = 0.1 * 500 = 50

Hence,

We should have 50 blue, orange and green skittles

23.33333% of total = 116.666 (about 117 skittles of yellow, red and purple color)

Help me pleaseee (10 points)

Answers

Answer:

Step-by-step explanation:

tan(16)=125/a

tan(16)=35.8 (DC)

tan(7)=125/a

tan(7)=15.3

35.8-15.3=20.5

Sorry if that's incorrect, my best is 20.5 feet.

Answer:   approximately 582 feet.

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

Work Shown:

Let

x = length of AD in feet

y = length of DC in feet

x and y are positive real numbers.

For now, focus on triangle BCD. Ignore point A and its associated angle.

tan(angle) = opposite/adjacent

tan(D) = BC/DC

tan(16) = 125/y

y*tan(16) = 125

y = 125/tan(16)

y = 435.926805480113

y = 435.926805

The value of y is approximate

Now focus on triangle ABC. Ignore point D and its associated angle.

tan(angle) = opposite/adjacent

tan(A) = BC/AC

tan(A) = BC/(AD+DC)

tan(7) = 125/(x + y)

(x+y)*tan(7) = 125

x*tan(7) + y*tan(7) = 125

x*tan(7) = 125 - y*tan(7)

x = ( 125-y*tan(7) )/( tan(7) )

x = ( 125-435.926805*tan(7) )/( tan(7) )

x = 582.116498496824

x = 582

The distance from A to D is approximately 582 feet.

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