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3 years ago

If a=3 and b=5 , then ab/15 + a(6+7b) =

Mathematics

2 answers:

stich3 [128]3 years ago

8 0

Answer:

124

Step-by-step explanation:

3x5/15=1

1+3(6+35)

1+18+105=

124

choli [55]3 years ago

5 0

The answer would be 124

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What are the answers for 10-11...please show answer and need the answer asap..thank you

Mariana [72]

Dear Rosabella09: For 9- Two possible dimensions are 8x15 and 10x20.
For 10- 16(8+18)1/2=208 208-(16x8/2)=208-64= [144 squared feet]

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3 years ago

A 10 inch cookie cake is divided into 8 slices. What is the area of 3 slices

brilliants [131]

Answer:

The area of 3 slices is $\frac{75}{8}\pi\ in^2$ or approximate $29.4\ in^2$

Step-by-step explanation:

<em>Find out the area of the cookie cake</em>

The area of the circle (cookie cake) is

$A=\pi r^{2}$

we have

$r=10/2=5\ in$ ----> the radius is half the diameter

substitute

$A=\pi (5)^{2}$

$A=25\pi\ in^{2}$

Remember that the area of the complete cookie cake subtends a central angle of 360 degrees

If the cake is divided into 8 slices

then

The central angle of each slice is equal to

360/8=45°

The central angle of 3 slices is equal to

3(45°)=135°

By proportion

Find out the area of 3 slices

Let

x ----> the area of 3 slices

$\frac{25\pi}{360}=\frac{x}{135}\\\\x=25\pi(135)/360\\\\x=\frac{3,375}{360}\pi\ in^2$

Simplify

$\frac{75}{8}\pi\ in^2$ ----> exact value of the area of 3 slices

Find out the approximate value of the area of 3 slices

assume

$\pi =3.14$

substitute

$\frac{75}{8}(3.14)=29.4\ in^2$

5 0

4 years ago

What does squared mean in geometry

MAVERICK [17]

In mathematics, a square is the result of multiplying a number by itself. The verb "to square" is used to denote this operation. Squaring is the same as raising to the power 2, and is denoted by a superscript 2; for instance, the square of 3 may be written as 32, which is the number 9.

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4 years ago

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The girls in Lana’s troop set a goal to sell 1,000 boxes of cookies this year. There are 13 girls in the troop. At least how man

Lady bird [3.3K]

Answer:

Step-by-step explanation:

13 x 77 = 1001 which is 1 more than enough, so the answer would be 77.

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3 years ago

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U need help ASAP!!!Please explain the answer