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blsea [12.9K]
3 years ago
7

1. What is the value of 5x² – 3x + 5 when x=2?

Mathematics
2 answers:
Andrews [41]3 years ago
4 0

Answer:

<em>624 is the answer</em>

Step-by-step explanation:

5x²-3x+5        x=2

plug in x=2: 25²-6+5=?

do the 25²: (25*25=625)

plug in 625 into the equation: 625-6+5

subtract 6 from 625: 625- 6= 619

plug 619 into your equation: 619+5=?

add 5 to 619: 619+5= 624

PolarNik [594]3 years ago
3 0

Answer:

19

Step-by-step explanation:

5x² – 3x + 5

Substitute 2 in for x

5(2)² - 3(2) + 5

Solve exponents first

5(4) - 3(2) + 5

Solve/multiply parenthesis

20 - 6 + 5

Add and subtract

19

Hope this helps :)

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Finding the rate of the weight gain, we divide the total weight gained with the total number of months that took to gain that weight.

Total time (months) = 0.5 + 2 + 3.5 = 6 months

Total weight (kg) = 80.6 + 88.4 + 96.2 = 265.2 kilograms

Rate = Kg ÷ Months

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44.2 kilograms per month​

Cheers!

4 0
3 years ago
1. Find the volume of the object below.*
Alex787 [66]

Answer:

228 cubic centimeters

Step-by-step explanation:

Find the volume for the blue box: 8 x 1 x 6 = 48

Find the volume of the orange box: 6 x 6 x 5 = 180

48 + 180 = 228

4 0
2 years ago
For which acute angle are the sine of the angle and cosine of the angle equal?
viva [34]
Sin = opposite/hypotenuse
cos = adjacent/hypotenuse

They are the same when opposite equals adjecent.
This only occurs when the angles are equal.

Answer: 45°
3 0
3 years ago
Read 2 more answers
100 points!! Brainliest if correct
ollegr [7]

Answer:

SA = 16x^2 +30x+6

Step-by-step explanation:

The surface area is given by

SA = 2 (lw + lh + wh)

The length is 2x, the width is (x+3) and the height is (2x+1)

SA = 2 ((2x)*(x+3) + (2x)*(2x+1) + (x+3) (2x+1))

We need to distribute

SA = 2 ((2x^2+6x) + (4x^2+2x) + (2x^2 +6x+x+3))

Combine like terms

SA = 2 (2x^2+ 4x^2+2x^2+6x+2x  +6x+x+3)

SA = 2 (8x^2+15x+3)

Multiply by 2

SA = 16x^2 +30x+6

8 0
3 years ago
Read 2 more answers
If two lines intersect and one of the angles formed has a measure of 67º, which of the following statements are true? Explain yo
Karo-lina-s [1.5K]

The statements that are true are:

A : Vertical angles are congruent, therefore, another angle must equal 67°

F: Two of the angles formed will have a sum of 180°

What happens when two lines intersect?

When two lines intersect, their vertical angles are always the same and the sum of the two angles on a straight line is 180°

Learn more about intersecting lines: brainly.com/question/2065148

#SPJ1

4 0
2 years ago
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