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2 years ago

CAN SOMEONE PLEASE CHECK IF I DID THIS CORRECT??? PLEASE JUST ANSWER ASAP FOR BRAINLIEST!!!

Mathematics

1 answer:

Serga [27]2 years ago

8 0

Answer:

Step-by-step explanation:

The top dot is the vertex, and it goes on point (3,4)

Also the right dot goes over 5 and not 4, the x of the vertex will always be the average of the two roots

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The sum of three consecutive odd numbers is 99.<br> What is the smallest of the three numbers ?

MAVERICK [17]

hope this is helpful!

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2 years ago

Help me. Please help me.

tekilochka [14]

Answer:

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Step-by-step explanation:

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1 year ago

Use Hooke's Law to determine the work done by the variable force in the spring problem. A force of 450 newtons stretches a sprin

vlada-n [284]

Answer:

The work done is 202.50Nm

Step-by-step explanation:

Given

$F =450N$

$x_1 = 30cm$

$x_2 = 60cm$

Required

The work done

First, we calculate the spring constant (k)

$F = kx_1$

$450N = k *30cm$

$k = \frac{450N}{30cm}$

$k =15N/cm$

So:

$F = kx_1$

$F(x) = 15x$

The work done using Hooke's law is:

$W =\int\limits^a_b {F(x)} \, dx$

This gives:

$W =\int\limits^{60}_{30} {15x} \, dx$

Rewrite as:

$W =15\int\limits^{60}_{30} {x} \, dx$

Integrate

$W =15 \frac{x^2}{2}|\limits^{60}_{30}$

This gives:

$W =15 *\frac{60^2 - 30^2}{2}$

$W =15 *\frac{2700}{2}$

$W =15 *1350$

$W =20250N-cm$

Convert to Nm

$W =\frac{20250Nm}{100}$

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7 0

2 years ago

A drawing of a rectangular room has dimensions of 12 inches by 6 inches. If the scale is 2 inches : 4 feet, find the area of the

grin007 [14]

Answer: 288 feet

Step-by-step explanation:

Length of drawing = 12 inches

Actual length = 12 × (4/2)feet = 24 feet

Width if the drawing = 6 inches

Actual width = 6 × (4/2)feet = 12 feet

The area of the actual room will be gotten by multiplying the dimensions. This will be:

= 24 feet × 12 feet

= 288 feet

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2 years ago

Expand & simplify<br> (x+1)2

stepan [7]

Answer:

(2x+2)

Step-by-step explanation:

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2 years ago