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4 years ago

If a = 8 and b = 4, evaluate the following expression: 2a - 3b - 1

Mathematics

1 answer:

Schach [20]4 years ago

5 0

Step-by-step explanation:

2(8) - 3(4) - 1

16 - 12 - 1

4 - 1

The expression after being evaluated is going to equal to 3.

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sdas [7]

The angles of a triangle all add up to 180º.

You need to set up and solve the equation:

84+48+3h = 180

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3 years ago

What is the value of 14°?<br> A.0<br> B.1<br> C.14<br> D.undefined

Mumz [18]

Your Answer Should Be 0

4 0

3 years ago

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Pls help me with this

Free_Kalibri [48]

Answer:

$\boxed{\sf \frac{15}{22} }$

Step-by-step explanation:

The radius of the circle is 7 cm.

The two legs of the triangles are 7cm as well.

Area of a trinagle is ( base × height )/2.

$\frac{7 \times 7}{2} =24.5$

Multiply the value by 2 since there are two triangles.

$24.5 \times 2 = 49$

Calculate the area of the circle.

$\pi r^2$

The radius is given.

$\pi (7)^2$

Take $\pi$ as $\frac{22}{7}$

$49(\frac{22}{7} )$

$=154$

Subtract the area of the two triangles from the area of the whole circle.

$154-49=105$

The area of the shaded part is 105 cm². The total area of the shape is 154cm².

$\frac{105}{154} =\frac{15}{22}$

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3 years ago

Help help help need to bring my f up in math

Fed [463]

( 4,20)is the correct answer

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3 years ago

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41. Consider the perimeter of the triangle shown. First, find the length of the hypotenuse.

marysya [2.9K]

Use the Pythagorean theorem!

This principle applies to any right triangles.

This states the relationship between the sides that

(7)² + (24)² = x²

All you have to do is simplify at this point.

49 + 576 = x²

625 = x²

√ √

x = 25

You should try to memorize this right triangle. It can be very helpful in fast questionnaires, such as the SAT.

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3 years ago

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