Solve the following system of linear equations using elimination.

−2x+7y=16
8x−6y=24

Answers

Answer 1

Answer:

mark brainlist please

Step-by-step explanation

-2x+7y=16 x=-8,0 y=0,16/7

8x-6y=24 y=(3,0) x=(0,-4)

Answer 2
it’s should be (6, 4)

Related Questions

Please help! Will mark brainliest if correct! Use the model attached to answer

Answers

Answer:

4 cubes will be shown in the right view of the model and the 1st option is the top view for the model.

A and b I think I hope

the two lines below are parallel if the slope of the red line is 5 what is the slope of the green line​

Answers

Answer:

5

Step-by-step explanation:

Since the two lines are parallel, they must have the same slope. This means that the slope of green line must be 5 just like the red line. You can also use the slope formula (rise/run) or change in y divided by change in x.

30+5z+5z=180
what is the value of z

Answers

Answer:

15

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

the value of z is 15

4. Which of the following graphs represents y = x-2?
HURRRY PLSSSS. I NEED IT ASAP

Answers

Answer:

B

Step-by-step explanation:

when it says -2 that means you go straight down

Answer:

B

Step-by-step explanation:

-2 in the equation is the y intercept and the slope is positive so graph B is the only possible answer

need help with all 3 pleaseeee

Answers

A.
A.
D.
Hope this helps!!
A
A
D
Hope this helps!!

8.6 x10^-9 in standard form

Answers

-9 in power means that the value is in fractional and the 10 base is multipied 9 times and put it on denominator.

8.6 = 86 x 10^-1

Let's multiply :

86 x 10^-1 x 10^-9

= 86 x 10^-10

= 86/10000000000

=0,0000000086

Note : if you don't know about how 10^-1 x 10^-9 returns 10^-10, it's because of exponential rules. If the base are same wuth each other, then just do the addition operation in the exponent like this :

10^(-1+(-9))

= 10^(-1-9)

=10^-10

Hope it helps :)


What is the value of -2(x + 5)?​

Answers

Answer:

-2x-10

Step-by-step explanation:

hope it hhhhheeeeeellllpppp you

what is the area of a rectangle if the length is (4x + 2) cm and a width of (5x – 3) cm

Answers

Answer:

20x^2−2x−6

Step-by-step explanation:

(4x+2)(5x+−3)

=(4x)(5x)+(4x)(−3)+(2)(5x)+(2)(−3)

=20x2−12x+10x−6

=20x2−2x−6

(4x + 2)(5x - 3)

Multiply:

4x(5x) = 20x^2
4x(-3) = -12x
2(5x) = 10x
2(-3) = -6

Combine Like Terms:

10x-12x = -2x

Answer:
20x^2 - 2x - 6

Find the area of the trapezoid 12.5cm 6cm 17.5cm

Answers

Answer:

The answer for this is a. 90

-30÷5=
bunun cevabı 6 mı??​

Answers

Answer:

-6

Step-by-step explanation:

-30÷5=-6

this is the ans

Triangle ABC is rotated counterclockwise using the origin as the center of rotation. The preimage and image are shown in the graph below. On a coordinate plane, triangle A B C has points (negative 4, negative 2), (negative 2, 1), (negative 2, negative 1). Triangle A prime B prime C prime has points (1.2, 4.2), (2, 1), (0, 2.9). Which rotation could have taken place?

Answers

Answer: it would be C. a 225° rotation

Step-by-step explanation: I got it correct

Answer:

C

Step-by-step explanation:

Five less than twice the value of a number is equal to three times the quantity of
four more than one-half the number. What is the
number?
a. Let x be the number. Write and solve an equation to find x. Show your work.
b. Does the solution of your equation solve the original problem? Explain.

Answers

Answer:

a) x = 34

b) yes, it checks out

Step-by-step explanation:

2x - 5 = 3(4 + 1/2x)

multiply both sides by 2 to eliminate fraction

2[2x - 5 = 3(4 + 1/2x)] = 4x - 10 = 24 + 3x

x - 10 = 24

x = 34

check

2(34) - 5 = 3(4 + 34/2)

68 - 5 = 3(4 + 17)

63 = 3(21)

63 = 63

Help please! I don't really understand :/

Answers

so you take 2 hours and multiply it by 5 cause you get $5 per hour. Then multiply 6.25 by 5. Add those together to get your answer!! So 5x2= 10. 6.25x5= 31.25. THE ANSWER SHOULD BE 41.25!

3(-4+4)+5n=2n what are the steps for finding n

Answers

Answer:

1. Move the variables to one side: 3(-4+4) = -3n

2. Distribute. You will end up with 0 = -3n

3. Divide both sides by -3. n = 0

Step-by-step explanation:

Answer:

n=0

Step-by-step explanation:

3(-4+4)+5n=2n

first distribute

-12+12+5n=2n

combine like terms

5n=2n

subtract 2n on both sides

3n=0

divide by 3 on both sides

n=0/3

which is also equal to

n=0


5. Suppose you invested PHP 25,000 at a simple interest at a rate of 2.5%, how much will be your investment after
10 years? a. PHP 43,750.00
C.PHP 45,730.00
b. PHP 31,250.00
d. PHP 47,350

Answers

Answer:

b. PHP 31,250.00

Step-by-step explanation:

Simple interest = principal × rate × time

Principal = PHP 25,000

Rate = 2.5%

Time = 10 years

Simple interest = principal × rate × time

= PHP 25,000 × 2.5% × 10

= 25,000 × 0.025 × 10

= 6,250

Simple interest = PHP 6,250

Investment after 10 years = principal + simple interest

= PHP 25,000 + PHP 6,250

= PHP 31,250

Investment after 10 years = PHP 31,250

What is 5 / 1? Explain.

(Just trying to give away easy points haha)

Answers

Answer:

5/1 = 5

Step-by-step explanation:

because 5/1 equals 5.

If cos θ > 0, which quadrant(s) could the terminal side of θ lie?

Answers

Answer:

I and IV

Step-by-step explanation:

cosine is positive/greater than 0 in quadrants I and IV. Its just a rule of the unit circle.

Can remember by All Star Trig Class

meaning all the trig funtions are positive in quadrant I

sin is positive in II

tan is positive in III

and cos is positive in IV

determine the slope and y-intercept from following the equation: y= 3/2x + 3

Answers

Answer:

Slope is 3/2 and y-intercept is +3

Step-by-step explanation:

slope = m

y intercept = b

Slope is 3/2 and y-intercept is +3

what is the solution of 9x+4<7-3n IF X is an element of whole number

Answers

Answer: if you want me to solve for n or x here

Step-by-step explanation: hope this help:)

Find the upper bound

Answers

The upper bound is 56cm I think

Ms. Meyer washed
2/7
of her laundry. Her son washed
1/4
of it. Who washed most of the laundry? How much of the laundry still needs to be washed?
Solve this on paper. Then check your work on Zearn.
write your answer as a fraction ill mark you !

Answers

Answer:

15/28 loads of laundry needs to be washed.

Step-by-step explanation:

2/7 + 1/4

=  

2 × 4 + 1 × 7

7 × 4 + 4 × 7

=  

8/28 + 7/28

=  

8 + 7/ 28

=  

15/28

Hits 2) How many solutions does the inequality have?
A) 0
B) 1
C) 8
D) infinitely many​

Answers

9514 1404 393

Answer:

  D)  infinitely many

Step-by-step explanation:

There are infinitely many points on any portion of the number line. The shading on the graph indicates all numbers less than or equal to 8 are solutions. There are infinitely many such numbers.

WHAT I CAN DO
Read, analyze and solve.
1. Cesar invited 300 kids in the party. Only 15% of the kids did notshow up. How
many kids came to the party?
2. Rosa got 20% of an 80 item test incorrectly. How many items did she get
correctly?
3. There were 50 pupils in Grade Ill. If 28% of the pupils were absent, how many
pupils were present?
4. Out of 50 pupils, only 48 pupils joined the educational fieldtrip. What percent
joined the trip?
5. Among the 50 pupils in a Grade 6 class, 6% are left-handed. How many are left-
handed?​

Answers

1.

300 x 0.15 = 45

300 - 45 = 255

255 kids came to the party

//

2.

80 x 0.20 = 16

80 - 16 = 64

She got 64 items correctly

//

3.

50 x 0.28 = 14

50 - 14 = 36

36 pupils were present

//

4.

48 / 50 = 0.96

0.96 x 100 = 96.0%

96% joined the trip

//

5.

50 x 0.06 = 3

3 pupils are left handed

Write an equivalent expression. ​-2(7+5g)

Answers

Answer:

-2(7) + -2(5g)

Step-by-step explanation:

Using the distributive property we can confirm that:

-2(7) + -2(5g) = -2(7+5g)

Answer:

−14−10g

Step-by-step explanation:

First, solve the product:

-2 ⋅ 7 - 2 ⋅ 5g

Multiply -2 times 7 to -14.

So, the equivalent expression would be:

-14 - 2 ⋅ 5g = -14 - 10g

-14 - 10g

What’s the answer for this one??

Answers

Answer:

It is the second one.

Step-by-step explanation:

a and e are equal because they are mirrored. d and b are equal because they are on the same  line and at the same point where the parallel lines go through. b and f are also mirrored. That leaves c and e which don't match.

What's the largest fraction in each group? a. 5⁄6 and 29⁄36 b. 5⁄12 and 3⁄8 c. 2⁄5 and 19⁄45 d. 5⁄7, 13⁄14, and 19⁄21

Answers

Solution :

We have to find the largest fraction in each group.

a). [tex]$\frac{5}{6}$[/tex] and [tex]$\frac{29}{36}$[/tex]

    [tex]$\frac{5}{6}$[/tex]  →  when we divide the number 5 with 6, we get 0.833

    [tex]$\frac{29}{36}$[/tex] → when we divide 29 by 36, we get the value 0.805

Therefore, in this group, [tex]$\frac{5}{6}$[/tex] is the largest fraction.

b).  [tex]$\frac{5}{12}$[/tex] and [tex]$\frac{3}{8}$[/tex]

     [tex]$\frac{5}{12}$[/tex]  →  when we divide the number 5 with 12, we get 0.416

    [tex]$\frac{3}{8}$[/tex] → when we divide 3 by 8, we get the value 0.375

Therefore, in this group, [tex]$\frac{5}{12}$[/tex] is the largest fraction.

c).  [tex]$\frac{2}{5}$[/tex] and [tex]$\frac{19}{45}$[/tex]

     [tex]$\frac{2}{5}$[/tex] →  when we divide the number 2 with 5, we get 0.40

    [tex]$\frac{19}{45}$[/tex] → when we divide 19 by 45, we get the value 0.42

Therefore, in this group, [tex]$\frac{19}{45}$[/tex] is the largest fraction.

d).  [tex]$\frac{5}{7}$[/tex], [tex]$\frac{13}{14}$[/tex] and  [tex]$\frac{19}{21}$[/tex]

      [tex]$\frac{5}{7}$[/tex] →  when we divide the number 5 with 7, we get 0.714

    [tex]$\frac{13}{14}$[/tex] → when we divide 13 by 14, we get the value 0.928

    [tex]$\frac{19}{21}$[/tex]  → when we divide 19 by 21, we get the value 0.904

Therefore, in this group, [tex]$\frac{13}{14}$[/tex]  is the largest fraction.

-14 = 4x - 2
what is the x ?

Answers

Answer:

X = -3

Step-by-step explanation:

Simplify:
(4/2d^2)^3

Answers

8/d^6


it needs to be 20 characters long so

Answer:

Step-by-step explanation:

[tex](\frac{4}{2}d^{2})^{3} =(2d^{2})^{3}\\\\= 2^{3}*(d^{2})^{3}\\\\=8d^{2*3}\\\\= 8d^{6}\\[/tex]

Hint: [tex](a^{m})^{n}=a^{m*n}\\\\[/tex]

66.6% recurring is what as a fraction​

Answers

Answer:

wfe

Step-by-step explanation:

333/500

Answer:

2/3

Step-by-step explanation:

2/3=0.6666666667 or 0.6 recuring

Which expression is the result of factoring the expression below by taking out its greatest common factor?
8x2 – 24 = ?

Answers

Answer:

Step-by-step explanation:

You need to give us the choices. However, I will try and give you the answer.

The highest common factor is 8

8(x^2 - 3)     This is the answer I think the question expects.

8(x - √3 )(x + √3)  this is also possible

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