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3 years ago

What is the value of 3ab+5b-6 when a=-1 and b=3?

Mathematics

2 answers:

olga55 [171]3 years ago

8 0

3ab + 5b - 6 when a = -1 and b = 3

3.(-1).3 + 5.3 - 6

(-3).3 + 15 - 6

-9 + 15 - 6

15 - 9 - 6

15 - 15

vazorg [7]3 years ago

7 0

3ab + 5b - 6 when a = -1 and b = 3

3.(-1).3 + 5.3 - 6

(-3).3 + 15 - 6

-9 + 15 - 6

15 - 9 - 6

15 - 15

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Please help me solve this step by step please :(

Ratling [72]

Answer:

B) 60.21 ft²

Step-by-step explanation:

Area of a triangle = 1/2bh

You can‘t used mixed measurements (feet and inches), so you have to convert each length to inches

8’6”=102’

14’2”=170’

Now find the area

1/2 x 102 x 170 = 8670 in²

This is one of the answers, but the quetion asks how many quart feet you need.

So, convert it back to feet.

8670 x 0.06944444444 = 60.2083333

(You could also have converted the two lengths to feet. 8’6” = 8.5 ft. 14’2” = 14.16666666. This way would probably have been faster.

1/2 x 8.5 x 14.166666 = 60.20833333)

3 0

3 years ago

State the type of angles and solve for the given variable.

Evgen [1.6K]

Step-by-step explanation:

the given pair is Alternate Exterior Angle

so their values are equal so,

→ 2x + 26 = 3x - 33

→ 2x - 3x = -33 - 26

→ x = 59

therefore option C is correct

hope this answer helps you dear...take care and may u have a great day ahead!

6 0

3 years ago

Evaluate the expression. 4.2°

Mariana [72]

Answer:

4.2°

Step-by-step explanation:

The result can be shown in multiple forms.

Exact Form: 4.2°

Decimal Form: 4.2

I hope this helps!

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3 years ago

The volume of a rectangular box is 1600 cubic inches. The height of the box is 8 inches and the length of the box is 2 times lon

Anastasy [175]

Answer:

0.833 feets

Step-by-step explanation:

Given that:

Volume of box = 1600

Heigh of box (H) = 8 inches

Let:

Width of box (W) = x

Length of box (L) = 2x

Volume of box = (Height * width * length)

1600 = (8 * x * 2x)

1600 = 16x²

x² = 1600/16

x² = 100

x = sqrt(100)

x = 10 inches

Hence, width of box in feet:

1 inch = 0.0833 feets

10 inches = (10 * 0.0833) feets

= 0.833 feets

7 0

3 years ago

Which of the following solutions solves the system?

katen-ka-za [31]

The answer is C

(1,-1)

8 0

3 years ago

Read 2 more answers