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s2008m [1.1K]
3 years ago
9

URGENT PLEASE ANSWER!

Mathematics
1 answer:
zheka24 [161]3 years ago
6 0

Answer:

<h2>YES</h2><h2>NO</h2><h2>YES</h2><h2>NO</h2>

Step-by-step explanation:

3x+7\\\\3\left(x+\dfrac{7}{3}\right)=(3)(x)+(\not3)\left(\dfrac{7}{\not3}\right)=3x+7\qquad\boxed{YES}\\_{\text{used the distributive property: a(b + c) = ab + ac}}\\\\x+x+x+5+1=(x+x+x)+(5+1)=3x+6\neq3x+7\qquad\boxed{NO}\\\\8x+3-5x+4=(8x-5x)+(3+4)=3x+7\qquad\boxed{YES}\\\\7x+3\neq3x+7\qquad\boxed{NO}

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Find the solution to the following system using substitution or elimination:
Licemer1 [7]

Answer:x=1

Step-by-step explanation:

y=y

y = -x + 10

y = 7x + 2

-x+10=7x+2

10=8x+2

8=8x

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3 0
3 years ago
Use the line tool to graph the equation on the coordinate plane.<br><br> y=−2x
sertanlavr [38]
Hey there,

Your answer would be in the attachment above.

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5 0
3 years ago
Read 2 more answers
Y = x² – 4 y = 2r + 4​<br><br>Solve algebraicallu for the solutions of equations below.
oksano4ka [1.4K]

Step-by-step explanation:

Okay, the first step is to rewrite this equation in "vertex form." You can search that up but it's basically just (h/k).

y = ( x − 1) 2 + 3

Now, we are going to use the vertex form, "y = a (x - h)2 + k, to get the values of a, h, and k.

By using the form we get 1 for the value a, 1 for the value h, and 3 for the value k.

1 = a

1 = h

3 = k

Becuse the value of a is positive, the parabola opens up!  (A parabola is the U shaped line in a graph, so that opens up.)

Now, we find the vertex (h,k)

which is (1,3)

Now we find the p from the vertex to the focus.  (vertext the top, focus one of the points.)

Follow this formula to find the distance from the vertex to a focus by using this formula

1/4a.

Now we just gonna substitue 1 for a, since we know that 1 equals a above ^

1/4 * 1

Solving that, we got a nice little 1/4.

Next we find the focus

"Find the focus.

The focus of a parabola can be found by adding p to the y-coordinate k if the parabola opens up or down.

(h,k+p)

Substitute the known values of h, p, and k into the formula and simplify.

(1,134)

Find the axis of symmetry by finding the line that passes through the vertex and the focus.

x=1

Find the directrix.

y=114

Use the properties of the parabola to analyze and graph the parabola.

Direction: Opens Up

Vertex: (1,3)

Focus: (1,134)

Axis of Symmetry: x=1

Directrix: y=114

Select a few x values, and plug them into the equation to find the corresponding y values. The x values should be selected around the vertex.

xy−1704132437

Graph the parabola using its properties and the selected points.

Direction: Opens Up

Vertex: (1,3)

Focus: (1,134)

Axis of Symmetry: x=1

Directrix: y=114

xy−17041324"

(Sorry if this is long! But I hope you understand it better now! Thanks for the points!)

3 0
2 years ago
2. You need to buy grass seed for a new lawn. The lawn will cover a rectangular plot that is 60 feet by 90 feet. Each ounce of g
Mama L [17]

Answer:

45 oz

Step-by-step explanation:

first you need to find the are of the yard. To do that you multiply the length by the width: 60x90=5400 feet

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therefore, you need to buy 45 ounces of grass seed.

6 0
3 years ago
30 Points! To Who Ever Can Give Me The Answer
n200080 [17]

Answer:

im sorry, the answer to what?

5 0
2 years ago
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