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3 years ago

What is the value of the expression when a=18 and b=14 ?

Mathematics

1 answer:

Ivenika [448]3 years ago

5 0

Answer:

1) 1/2 (18+14) - (18-14)^2

2) 1/2 (32) - (4)^2

2) 16 - 16

3) 0

Therefore, the answer is D

Step-by-step explanation:

Hope this helps :D

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Mr. Gail uses 12 gallons of gas for a 400-mile trip. How far can I travel on one gallon of gas

bulgar [2K]

Answer:

100/3 or 33.34 miles a gallon

Step-by-step explanation:

Divide the number of miles by gallons of gas to get the number of miles traveled on one gallon of gas.

3 0

2 years ago

The diameter of a circle is 14cm. Which TWO statements are correct?<br><br> A

Reika [66]

Answer:

(a) and (e)

Step-by-step explanation:

Given

$d = 14cm$

Required

Select the true statements

First, is a statement about the area.

The area is calculated as:

$Area= \pi*\frac{d^2}{4}$

So, we have:

$Area= 3.14*\frac{14^2}{4}$

$Area= 3.14*49$

(a) is true

Next, is a statement about the circumference.

This is calculated as:

$C = \pi d$

So, we have:

$C = 3.14 * 14$

(e) is true

3 0

2 years ago

50 ft

juin [17]

9514 1404 393

Answer:

1725 ft²

Step-by-step explanation:

The formula for the area of a trapezoid is ...

A = 1/2(b1 +b2)h

Here, the bases are given as 65 ft and 50 ft, and the height is 30 ft. Then the area is ...

A = 1/2(65 ft +50 ft)(30 ft) = (1/2)(115 ft)(30 ft) = 1725 ft²

You tell the salesman your lawn area is 1725 square feet.

5 0

3 years ago

Multiple choice. A square floor mat has a side length of 22 m.

Usimov [2.4K]

Answer:

Step-by-step explanation:

.........................

6 0

2 years ago

Read 2 more answers

Solve each quadratic equation. Show your work.<br> x^2 + 3x = 10

Oxana [17]

$x^{2} +3x=10$
$x^{2} +3x-10=0$
$x^{2} +5x-2x-10=0$
x(x+5)-2(x+5)=0
(x-2)(x+5)
x=2, x=-5

6 0

3 years ago

Read 2 more answers