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natima [27]
3 years ago
15

One of my students got 95 and 98 for the two Principal tests and for the final test. What is the average of her three tests? Wha

t should be the minimal grade on the final test so that the average of the three tests is at least 90?
Mathematics
1 answer:
timofeeve [1]3 years ago
3 0
97% because that is the average of the three test scores.
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Convert to slope intercept form y-4=6(x-3)
Contact [7]

Answer:

y = 6x - 14

General Formulas and Concepts:

<u>Pre-Algebra</u>

  • Distributive Property

<u>Algebra I</u>

Equality Properties

Slope-Intercept Form: y = mx + b

  • m - slope
  • b - y-intercept

Step-by-step explanation:

<u>Step 1: Define</u>

[Point-Slope Form]   y - 4 = 6(x - 3)

<u>Step 2: Rewrite</u>

<em>Find Slope-Intercept Form.</em>

  1. Distribute 6:                    y - 4 = 6x - 18
  2. Isolate <em>y</em>:                          y = 6x - 14
8 0
2 years ago
I have two questions to solve<br><br> -3x+10=34<br><br> 13x-4=11x+10-8
Marina CMI [18]

-3x + 10 = 34

Subtract 10 from both sides:

-3x = 24

Divide both sides by -3:

X = 24 / -3

X = -8

musiclover10045

Middle School Mathematics 39+20 pts

I have two questions to solve

-3x+10=34

13x-4=11x+10-8

Combine like terms on the right side:

13x -4 = 11x + 2

Subtract 11x from both sides:

2x -4 = 2

Add 4 to both sides:

2x = 6

Divide both sides by 2:

X = 6/2

X = 3

5 0
2 years ago
Read 2 more answers
What is the simplified expression for-3cd-d(2c-4)-4d
Elden [556K]

Answer: 0 -5cd.

Hope this helps :)

- Martiinez :)

8 0
3 years ago
Find the value of X. Write your answer in simplest form.<br>What does X equal? ​
drek231 [11]

<u>Given</u>:

Given that the figure of similar triangles.

The altitude of the triangle is x.

The length of the left part is 30.

The length of the right part is 15.

We need to determine the value of x.

<u>Value of x:</u>

The value of x can be determined using the geometric mean theorem.

Thus, we have;

\frac{\text { left }}{\text { altitude }}=\frac{\text { altitude }}{\text { right }}

Substituting the values, we have;

\frac{30}{x}=\frac{x}{15}

Cross multiplying, we get;

30 \times 15= x^2

     450=x^2

Taking square root on both sides, we have;

15 \sqrt{2}=x

Thus, the value of x is 15√2

7 0
3 years ago
6R + r -5r simplify each expression<br> A.2r<br> B.1 r + r<br> C.0r<br> D.7r-5r
olga nikolaevna [1]
A. 2r
r-5r=-4r
6r+-4r=2r
5 0
3 years ago
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