All categories

3 years ago

Someone please help ASAP! ITS DUE TODAY! Will give BRAINLIEST a to the person that gives a correct answer and explanation.

Mathematics

2 answers:

Yakvenalex [24]3 years ago

6 0

The first one is 11 and the second is 8.4

madreJ [45]3 years ago

5 0

Answer:

1) 11

2) 8.4

Step-by-step explanation:

You might be interested in

Help Me Asap Please And Thank You!

jeka94

In this case using the elimination method is actually easier, but the question asks you to use substitution method so....

2x+y= -10

3x-y=0

1st equation: It is better to isolate 2x on both sides because the y is going to be positive no matter what, 2x+y=-10 => y=-2x-10

If you isolated 3x for the 2nd equation, the y will be negative, and you have to divide the whole equation by -1 to make it positive

Now we got y=-2x-10, lets substitute it in the 2nd equation and solve for x:

3x-(-2x-10) = 0

5x+10=0

5x=-10

x=-2

Now lets solve for y:

3(-2)-y=0

-6-y=0

y=-6

Lets see if the same is applicable for 1st equation

2(-2)+(-6)=-10

-10=-10

Yess!!

(-2,-6) is the solution

The answer to the question is explained at the beginning

Hope it helps!

7 0

2 years ago

Please help, show all work, asappp

VikaD [51]

QUESTION 1

We want to find the slope through the points (12,-18), (11,12).

We use the slope formula,

$m = \frac{y_2-y_1} {x _2-x_1}$

We substitute the points to get,

$m = \frac{12 - - 18}{11 - 12}$

$m = \frac{30}{ - 1} = - 30$

The slope is -30.

QUESTION 2.

We want to find the slope through the points (-18, -20), (-18, -15).

We use the slope formula again to obtain,

$m = \frac{ - 15 - - 20}{ - 18 - - 18}$

We simplify to get;

$m = \frac{5}{0}$

Division by zero means the slope is not defined.

QUESTION 3

The given equation is 4x + y = 5.

At x-intercept, y=0.

We put y=0 into the equation to get,

$4x + 0 = 5$

$4x = 5$

$x = \frac{5}{4}$

The x-intercept is

$( \frac{5}{4} , 0)$

To find the y-intercept,we substitute x=0 into the equation to get,

$4(0) + y = 5$

$y = 5$

The y-intercept is (0,5)

QUESTION 4.

The given equation is

$y = 5x - 4$

To find the y-intercept put x=0 into the equation.

$y = 5(0) - 4$

$y = - 4$

(0,-4)

To find the x-intercept, put y=0,

$0 = 5x - 4$

$4 = 5x$

$\frac{4}{5} = x$

$( \frac{4}{5} ,0)$

QUESTION 5

To find the equation of a line given the slope m, and a point

$(x_1,y_1)$

we use the formula,

$y-y_1=m(x-x_1)$

The given line has slope zero and passes through

(3,4)

The equation is

$y - 4 = 0(x - 3)$

$y - 4 = 0$

$y = 4$

Question 6

The given equation is

$x = 1$

This is the equation of a line that is parallel to the y-axis.

The slope of all lines parallel to the x-axis is undefined.

The slope of x=1 is not defined.

7 0

4 years ago

70%of $10 =$<br> Complete the following the statement

kogti [31]

Answer:

Step-by-step explanation:

Have a good day :)

8 0

4 years ago

Read 2 more answers

E is the midpoint between D and F. If DE=3x+2, EF=5x, find the value of x. A. 1 B. 15 C. 3 D. 5

Nadya [2.5K]

Step-by-step explanation:

then u times the d and e to get the equivalent fraction to the number u get

7 0

3 years ago

You deposit $900 in a savings account. The account earns 4% simple interest per year. What is the balance after 8 years? What is

xeze [42]

$900+ $288( interest after 8 years)= $1, 188( total balance)

8 0

3 years ago