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2 years ago

PLEASE HELP ME ON THIS THANK U

Mathematics

1 answer:

serg [7]2 years ago

4 0

1. y=1.04+61.92
i think correct answer on the second slide is A

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A construction crew is lengthening a road. The road started with a length of 59 miles, and the crew is adding 3 miles to the roa

AlekseyPX

L = total length

D = number of days

they add 3 miles per day which = 3D

equation: L = 59 +3D

if they worked for 34 days, replace D with 34 to get:

L = 59 +3(34) =

L=59 + 102

L=161 miles total length after 34 days

5 0

3 years ago

Can someone please help me?

Vladimir79 [104]

Answer:

Option D is the correct option.

Step-by-step explanation:

y = - 2x - 3 → Equation ( i )

y = 3x + 2 → Equation ( ii )

Using elimination method

y + 2x = - 3

y - 3x = 2

---------------------

5x = - 5

Divide both sides of the equation by 5

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

Calculate

$x = - 1$

Again, Putting the value of x in equation ( ii ) in order t get the value of y

$y = 3x + 2$

plug the value of x

$= 3 \times ( - 1) + 2$

Any expression multiplied by ( - 1 ) equals it's opposite

$= - 3 + 2$

Calculate

$= - 1$

Therefore, The possible solution of the system is the ordered pair ( x , y )

$(x \:, y \: ) = ( - 1 \:, - 1)$

-----------------------------------------------------------------------

Check if the given ordered pair is the solution of the system of equation

$- 1 = - 2 \times ( - 1) - 3$

$- 1 = 3 \times ( - 1) + 2$

Simplify the equation

$- 1 = - 1$

Since all the equalities are true, the ordered pair is the solution of the system.

Hope this helps..

Best regards!!

7 0

3 years ago

Rewrite the following polynomial in standard form <br> -x2 + 1 + 2x

fenix001 [56]

Answer:

-5x^4+8x^3-2x+1

Step-by-step explanation:

5 0

2 years ago

Which postulate can be used to prove that two triangles are congruent

user100 [1]

Side-Side-Side Theorem, Side-Angle-Side, Angle-Angle-Side, Angle-Side-Angle, and Hypotenuse-Leg for right triangles.

For example, for Side-Side-Side, if you prove all 3 sides of the triangle are congruent, then the triangle is congruent.

3 0

3 years ago

2cos2+cos2(2)−2cos2cos2=1

vekshin1

The left side
1.99999925
1.99999925
does not equal to the right side
1
1
, which means that the given statement is false.

8 0

3 years ago