1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Finger [1]
3 years ago
13

NEED HELP Solve using elimination. –8x − 4y = –20 8x + 5y = 13

Mathematics
1 answer:
STatiana [176]3 years ago
4 0

Answer:

X=6 and y=-7

Step-by-step explanation:

You might be interested in
1/8 + 1/4 ?? Why do I need 20 characters to summit this
abruzzese [7]

Answer:

0.375

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
A bird (b) is spotted flying 900 feet from an observer. the observer (o) also spots the top of a tower (t) at a height of 200 fe
Svetach [21]

Angle of depression = 12.52°

The right angle triangle formed has a height of 200 ft and a base of 900 ft.

The opposite side of the triangle is 200 ft while the adjacent side of the triangle is 900 ft.

Using tangential ratio we can find the angle of depression. Therefore,

Let

x = angle of depression

tan x = opposite/adjacent

opposite = 200 ft

adjacent = 900 ft

tan x = 200/900

tan x = 2/9

x = tan⁻¹ 2/9

x = tan⁻¹ 0.222

x = 12.5166739144

x = 12.52°

To learn more about angle of depression from the given link

brainly.com/question/16772926

#SPJ4

3 0
2 years ago
Jessica wrote the numbers 4 1/5,3 1/3, 5 1/2 in the form of a fraction.Whats the greatest numerator that Jessica wrote?
marysya [2.9K]
The correct answer is 5 1/2 because if it weren’t simplified it would be 6/2 which makes the numerator the greatest.
6 0
3 years ago
WILL MARK BRAINIEST
muminat

Answer:

f(x) = -4x - 2

Step-by-step explanation:

To derive the function rule in slope-intercept form, f(x) = mx + b, we need to find the slope, m, and the y-intercept, b, of the graph given.

Using two points on the line, (-1, 2) and (0, -2), find slope (m) as shown below:

m = \frac{y_2 - y_1}{x_2 - x_1} = \frac{-2 - 2}{0 -(-1)} = \frac{-4}{1} = -4

m = -4

The line intercepts the y-axis at y = -2, therefore the y-intercept, b, = -2.

Substitute m = -4, and b = -2 into f(x) = mx + b.

The function rule in slope-intercept form would be:

f(x) = -4x +(-2)

f(x) = -4x - 2

7 0
3 years ago
1J
Harlamova29_29 [7]

Answer:

(1,-1)

Step-by-step explanation:

We can solve the system by using substitution.

In order to do this we must make x the subject in the first equation.

We can do this by simply subtract 2y from both sides

x + 2y = -1

subtract 2y from both sides

x + 2y - 2y = -1 - 2y

simplify

x = -2y - 1

now that we have made x the subject in one of the equations we can plug in (or substitute) the value of x into the other equation

2x – 3y = 5

x = -2y - 1

2(-2y - 1) - 3y = 5

We can then solve for y

2(-2y - 1) - 3y = 5

Distribute the 2

-4y - 2 - 3y = 5

combine like terms -4y + -3y

-7y - 2 = 5

add 2 to both sides

-7y = 7

divide both sides by -7

y = -1

Now that we have found the value of y we can plug in the value of y into one of the equations and solve for x

x + 2y = -1

y = - 1

x + 2(-1) = -1

multiply 2 and -1

x + -2 = -1

add 2 to both sides

x = 1

So we have found that x = 1 and y = -1 therefore the solution to the system of equations is (1,-1)

7 0
3 years ago
Read 2 more answers
Other questions:
  • Theo's mom brought an eight pack of juice boxes at the store for $4 find the unit rate for the juice boxes
    6·1 answer
  • The number of eggs in the refrigerator e decreased by 2 equals 15.
    8·1 answer
  • Which expression best estimates 6 and three-fourths divided by 1 and two-thirds? 7 divided by 2 6 divided by 1 8 divided by 3 3
    13·2 answers
  • 0.0098 divied by 0.08
    15·1 answer
  • Consider the quadratic equation x? = 4x - 5. How many solutions does the equation have? A The equation has one real solution. Th
    11·1 answer
  • Needddd helppp plzzzzz
    10·1 answer
  • . Micah has 294 songs stored in his phone, which is 70% of the songs that George has stored in his phone. How many songs are sto
    13·1 answer
  • Find the slope of the line that passes through (39, -29) and (54, -20).
    15·1 answer
  • Need answer quick for an assignment please.
    10·1 answer
  • The sale price for a calculator that costs $37.65 with a markdown of 25% is<br> Help
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!