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3 years ago

It takes Jada 20 minutes to walk to school. It takes Andre 80% as long as Jada to walk to school.

Mathematics

1 answer:

Paha777 [63]3 years ago

3 0

Answer:56 seconds

Step-by-step explanation:

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HELP ASAP!!!!!!

WARRIOR [948]

Answer:

x=26

C = 91

Step-by-step explanation:

The sum of the angles of a triangle add to 180 degrees

A + B+ C = 180

35+ 52+ 3(x+5) = 180

Distribute

35+52+3x+15 = 180

Combine like terms

102 +3x = 180

Subtract 102 from each side

102-102 +3x=180-102

3x= 78

Divide by 3

3x/3 = 78/3

x=26

Now we need to find angle C

c = 3(x+5)

C = 3(26+5)

3(31)

6 0

3 years ago

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down; drag it into the corre

Alex777 [14]

8x^3 -5x^2 + 8x + 9+5x^3 + 3x^2 - 5x + 4 =
8x^3+5x^3-5x^2 + 3x^2+ 8x - 5x+ 9<span>+ 4 = </span>
13x^3-2x^2+3x+13

3 0

4 years ago

Simple interest on a bank loan can be calculated by multiplying the principal times the interest rate times the time. In the for

diamong [38]

Answer:

simple interest

Step-by-step explanation:

this is because r is interest rate, p is principal, and t is time

5 0

2 years ago

Read 2 more answers

A grain silo has the shape of a right circular cylinder surmounted by a hemisphere. If the silo is to have a volume of 505π ft3,

Romashka-Z-Leto [24]

Answer:

radius x = 3 ft

height h = 23,8 ft

Step-by-step explanation:

From problem statement

V(t) = V(cylinder) + V(hemisphere)

let x be radius of base of cylinder (at the same time radius of the hemisphere)

and h the height of the cylinder, then:

V(c) = π*x²*h area of cylinder = area of base + lateral area

A(c) = π*x² + 2*π*x*h

V(h) = (2/3)*π*x³ area of hemisphere A(h) = (2/3)*π*x²

A(t) = π*x² + 2*π*x*h + (2/3)*π*x²

Now A as fuction of x

total volume 505 = π*x²*h + (2/3)*π*x³

h = [505 - (2/3)* π*x³ ] /2* π*x

Now we have the expression for A as function of x

A(x) = 3π*x² + 2π*x*h A(x) = 3π*x² + 505 - (2/3)π*x³

Taking derivatives both sides

A´(x) = 6πx - 2πx² A´(x) = 0 6x - 2x² = 0

x₁ = 0 we dismiss

6 - 2x = 0

x = 3 and h = [505 - (2/3)* π*x³]/2* π*x

h = (505 - 18.84) / 6.28*3

h = 23,8 ft

7 0

3 years ago

Please please help me with this.

puteri [66]

Answer:

Step-by-step explanation:

Since the inequality is < then the line separating the shaded and plain regions will be broken.

Thus graph A or B

Choose a test point in each shaded region and check validity of solution

From A choose (0, 2), then

2 < 0 + $\frac{4}{7}$ → 2 < $\frac{4}{7}$ ← False

From B choose (0, - 2), then

- 2 < 0 + $\frac{4}{7}$ → - 2 < $\frac{4}{7}$ ← True

Thus the graph representing the inequality is B

5 0

3 years ago