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3 years ago

-4x^2+2x-5(1+x) what expression is equivalent to the given expression

Mathematics

1 answer:

Tcecarenko [31]3 years ago

7 0

Answer:

− 4 x ^2 − 3 x − 5

Step-by-step explanation:

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Aran moved a cone-shaped pile of sand that had a height of 4 ft and a radius of 3.2 ft. He used all of the sand to fill a cylind

Yuliya22 [10]

So volue of a cone=area of circle base times heigt times 1/3

height=4
area of base=pi times r^2
area of abse=aprox 3.14 times 3.2^2=32.1536
32.1536 times 4 times 1/3=32.1536 times 4/3=42.87 the amount of sand is 42.9 ft^3

5 0

3 years ago

Calculate the area of triangle .

AnnZ [28]

Answer:

20 units

Step-by-step explanation:

The formula for the area:

A = bh × 1/2

B = 8 units

H = 5 units

8 × 5 = 40

40 × 1/2 = 20

8 0

3 years ago

In the right triangle below, an altitude is drawn to the hypotenuse. Solve for x.

svet-max [94.6K]

Answer:

x = 3√7

Step-by-step explanation:

From the right triangle given in the picture,

Altitude or height of the triangle (AD) = x

Base or hypotenuse of the given triangle (BC) = 16

Length of segment BD = 16 - 7 = 9

By using geometric mean theorem in the given triangle,

$\frac{AD}{BD}=\frac{DC}{AD}$

(AD)² = (BD)(CD)

x² = 9×7

x = √63

x = 3√7

4 0

3 years ago

Any of these questions please

maw [93]

Answer:

See the explanation below.

Step-by-step explanation:

$f(t)=21020\left(1+0.012\right)^t\\\\f(t)=21020\left(1.012\right)^t\\$

Starting from $t=2002$

By putting $t=2015-2002=13$ we have:

$f(t)=21020\left(1.012\right)^{13}\\\\\approx 24546$

7 0

3 years ago

What is standard form of y=2/5x - 3?

vlabodo [156]

Answer:

Bring 3x to the left: −3x + y = 2. Multiply all by −1: 3x − y = −2. Note: A = 3, B = −1, C = −2. This form: Ax + By + C = 0. is sometimes called "Standard Form", but is more properly called the "General Form".

Step-by-step explanation:

dat is only exsample so i thingk i help u

3 0

3 years ago