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Crank
3 years ago
12

Are the expressions 5(x+2)-7 and 5x-5 equivalent

Mathematics
1 answer:
geniusboy [140]3 years ago
7 0

Answer:

No

Step-by-step explanation:

5x-5 is not equivalent to 5(x+2)-7 because when you multiply out the 5 in 5(x+2)-7 you get 5x+10-7, which simplifies to 5x+3.

5x-5 ≠ 5x+3

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Wegnerkolmp or someone who can explain this to me
netineya [11]

Answer:

m<CDE=66 degrees.

Step-by-step explanation:

(1) Extend the segment DC so it intersects with line BA. Call the intersection F.

(2) Consider triangle BCF. In here, we are given m<ABC=24 deg. Since m<BCD = 90 deg, we known that m<BCF = 90 deg. Knowing two angles in the triangle BCF lets us determine the rhird angle m<BFC = 180-90-24 = 66 deg.

(3) Because of the fact that AB || DE and the fact that line DF intersects AB and DE, the angles <BFC and <CDE are congruent. Therefore m<CDE=66 deg.


3 0
3 years ago
!! WILL MARK BRAINLIEST PLZ HELP !!
Luba_88 [7]

Answer:

c

Step-by-step explanation:

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

5 0
3 years ago
Jessica completed 20 haircuts in 8 hours. On average how many haircuts per hour did Jessica do?
jeka94

Answer:

two and a half

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Find the slope of the line that would be parallel to the given original line 3x+y=10
Arturiano [62]
The answer is 3. If the lines are parallel then they would have the same slope. :)
7 0
3 years ago
The path of an underwater drone is modeled by quadratic function d, where x is the horizontal distance, in miles, from the launc
soldier1979 [14.2K]

Based on the vertex form equation, the statements that are true are:

A.) the drone reaches its minimum 25 miles from the launch site

C.) at its minimum, the drone’s depth is -180 meters.

<h3>Rewriting the equation in vertex form</h3>

Given:

x = horizontal distance, in miles, from the launch site

d(x)= depth below the surface of the water, in meters.

Equation= 0.4x ²- 20x + 70

Hence

Rewritten the given equation ( 0.4x ²- 20x + 70) in vertex form will be:

Vertex form: d(x)=[2(x-25)²÷5] -180

Vertex= -180, 25

Minimum=-180 at x=25

Therefore the correct option is A, C.

Learn more about vertex form here:brainly.com/question/17987697

#SPJ1

6 0
2 years ago
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