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hjlf
3 years ago
13

Complete the steps for solving 7 = –2x2 + 10x.

Mathematics
2 answers:
Nikitich [7]3 years ago
4 0

Answer:

1. -2

2. add 25/4

3. sub 25/2

4. 5/2

Step-by-step explanation:

Whitepunk [10]3 years ago
4 0

Answer:

1. -2

2. add 25/4

3. sub 25/2

4. 5/2

Step-by-step explanation:

You might be interested in
Analyze the data represented in the table and select the appropriate model
Inessa05 [86]

Answer: Option B, a linear relation.

Step-by-step explanation:

Let's analyze the points in the data:

the first 3 pairs are: (0,14.70) (10,19.03) and (20, 23.36)

We can see the differences between consecutive points and see if the relation is linear:

(10,19.03) -  (0,14.70) = ( 10 - 0, 19.03 - 14.70) = (10, 4.33) now we need to see the quotient: 4.33/10 = 0.433

(20, 23.36) - (10,19.03)  = (20 - 10, 23.36 - 19.03) = (10, 4.33), and the quotient is the same as before.

This means that the relation is a linear relation, where the slope os 0.433 and the x-intercept is 14.70, so the equation can be written as:

y(x) = 0.433*x + 14.70

3 0
3 years ago
Help someon in need of making a 100 to pick my grade up plzz
Marat540 [252]

Answer:

Step-by-step explanation: 10x10=100

D and b

3 0
2 years ago
(3+root3)(3-root 2) is equal t<br><br><br><br> Pls its urgent
olganol [36]

Answer:

9 - √6

Step-by-step explanation:

(3 + √3)(3 - √2) ➡ 9 - 3√3 + 3√3 - √6

9 - √6

7 0
3 years ago
If a person earns $275 per week, how much is earned in 26 weeks
WARRIOR [948]

Answer:

$7150

Step-by-step explanation:

To find how much is earned, take the amount earned per week times the number of weeks

275*26 =7150

4 0
3 years ago
Image a coordinate plane with points plotted at ordered pairs Q(-4,4) R(2,4) S(5,-3) T(2,-3) and U (-4,-3) what is the area of t
pogonyaev

In counterclockwise order that's


R(2,4), Q(-4,4), U(-4,3), T(2,-3), S(5,-3)


That's a trapezoid, height 7 upper base 6, lower base 9, so average base 15/2 and area 7(15)/2 = 105/2 = 52.5.


Answer: 52.5


The shoelace theorem gives the answer without thinking. We write the list on top of itself shifted and add up the cross produces:


R(2,4), Q(-4,4), U(-4,-3), T(2,-3), S(5,-3)

Q(-4,4), U(-4,-3), T(2,-3), S(5,-3), R(2,4),


A = \frac 1 2 | 2(4)-(4)(-4) + -4(-3)-(-4)(4) + -4(-3)- -3(2) + 2(-3)-(-3)(5) + 5(4)- -3(2)| = \frac{105}{2} \quad\checkmark




8 0
3 years ago
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