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3 years ago

Answer this and get a free point.

Mathematics

2 answers:

Ksju [112]3 years ago

7 0

Answer:

Step-by-step explanation:

gulaghasi [49]3 years ago

5 0

Answer:

14.1% to 1 decimal place.

Step-by-step explanation:

The amount left over = 320 - 275 = 45.

As a percentage of the original 320 this is 45 * 100 / 320

= 14.0625 %.

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I need help pls <br><br> What is the value of x?

ValentinkaMS [17]

Answer:

Step-by-step explanation:

the value of x, bring the variable to the left side and bring all the remaining values to the right side

8 0

2 years ago

show that thw roots of the equation (x-a)(x_b)=k^2 are always real if a,b and k are real. Please I really need help with this

VLD [36.1K]

Answer:

see explanation

Step-by-step explanation:

Check the value of the discriminant

Δ = b² - 4ac

• If b² - 4ac > 0 then roots are real

• If b² - 4ac = 0 roots are real and equal

• If b² - 4ac < 0 then roots are not real

given (x - a)(x - b) = k² ( expand factors )

x² - bx - ax - k² = 0 ( in standard form )

x² + x(- a - b) - k² = 0

with a = 1, b = (- a - b), c = -k²

b² - 4ac = (- a - b)² + 4k²

For a, b, k ∈ R then (- a - b)² ≥ 0 and 4k² ≥ 0

Hence roots of the equation are always real for a, b, k ∈ R

8 0

3 years ago

Evaluate the expression 6/5x when x=20

Sindrei [870]

Answer:

Step-by-step explanation:

6 divided by 5 times 20 =24

6/5*20= 24

7 0

2 years ago

( 3m - 2 ) + 2 - m + 3

tia_tia [17]

Answer:

nxxjdndndndkdkd

snns

Step-by-step explanation:

dndn ecochin

divination funk bunk

byhhbjdnd

nsnndbddnnjdjjjjkk

djsjdndnsndn

7 0

3 years ago

it have 3 sides but in the formula we have 4 sides which is (A b sides) (B base sides ) (C base side ) and (height) HEEELLLLPPPP

Vikki [24]

Answer:

225 m³ or 225 cubic meters

Step-by-step explanation:

Actually it has 5 sides, the 2 bases, the 3 lateral faces.

The formula for the volume of a triangular prism is: $\frac{h*b*l}{2}$

Using the given measurements, we get:

$\frac{9*5*10}{2} =\\\\\frac{450}{2} =\\\\225$

The volume of the prism is 225 m³

3 0

4 years ago