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My name is Ann [436]
2 years ago
12

Dimitri is solving the equation x2 – 10x = 21. Which value must be added to both sides of the equation to make the left side a p

erfect-square trinomial?
0
4
25
100
Mathematics
2 answers:
vitfil [10]2 years ago
8 0

Answer:

C. 25

Step-by-step explanation:

Edge 2020

balandron [24]2 years ago
4 0

Answer:

the answer is C 25

Step-by-step explanation:

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Help plsss whats the slope
Anettt [7]
The slope is three because the x goes up 1 and y goes up 3 so it’s 3/1 which makes the slope 3
4 0
2 years ago
The credit remaining on a phone card (in dollors) is a linear function of the total calling trime made with the card ( in minute
KATRIN_1 [288]

After 85 minutes of calls, there are $27.25 left on the card.

<h3>What is the remaining credit after 85 minutes of calls?</h3>

A linear equation in slope-intercept form is:

y = a*x + b

Where a is the slope.

If the line passes through two points (x₁, y₁) and (x₂, y₂) the slope is:

a = \frac{y_2 - y_1}{x_2 - x_1}

In this case, we know that the line passes through the points (22, 36.7) and (52, 32,20)

(points of the form (time, dollars)).

So the slope is:

a = \frac{32.2 - 36.7}{52 -22} = -0.15

The linear equation is then:

y = -0.15*x + b

To find the value of b, we use the point (22. 36.7)

36.7 = -0.15*22 + b

36.7 + 0.15*22 = b = 40

Then the linear equation is:

y = -0.15*x +40

The amount remaining in the credit card after 85 minutes is given by evaluating the above equation in x = 85.

y = -0.15*85 + 40 = 27.25

This means that after 85 minutes of calls, there are $27.25 left on the card.

If you want to learn more about linear equations:

brainly.com/question/1884491

#SPJ1

7 0
1 year ago
What is 2(10x+3)+2(4c)
lora16 [44]
Your answer is 140
so yeah i have to keep typing because its too short and im done

5 0
2 years ago
Classify each number as rational or irrational. Drag the choices into the boxes to correctly complete the table.
Alex17521 [72]

Answer:

3 = irrational

-1/16 = rational

0 = rational

2 =irrational

7 0
3 years ago
Read 2 more answers
Stacy and Travis are rock climbing. Stacy’s rope is 4 feet shorter the 3 times the length of Travis rope. Stacy’s rope is 23 fee
prohojiy [21]
23×3=69
69-4=65
travis's rope is 65ft long.
7 0
3 years ago
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