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valina [46]
3 years ago
10

Evaluate 5a + 5b, where a = –6 and b = –5.

Mathematics
2 answers:
balandron [24]3 years ago
8 0
Use Calculator soup it helps me a lot and I hope it helps you
ratelena [41]3 years ago
8 0
5(-6) + 5(-5)

5 x -6 = -30

5 x -5= -25

-30 + -25= -55

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Joan multiplied 9.1 by 10 1.
nataly862011 [7]
It will be greater than 9.1 if he multiplied by 10.1
7 0
4 years ago
A label that wraps around a box of golf balls covers 75 percent of its lateral surface area. What is the value of x?
mestny [16]

Answer:

To find the area of the rectangular prism, use the formula:

A = width x height x length

A = 2 x 2 x 3

A = 12

Now multiply A with 0.75

12 x 0.75 = 9

x = 9 in³

hope this helps

Step-by-step explanation:

8 0
3 years ago
Whiskers the cat weighs 2 2/3 kg. Piglo weighs 4kg. For each question , write a myipulcation and a division equation, decide whe
Liula [17]

Answer:

1) x= 3/2=  1 1/2

2) x=  2/3

Step-by-step explanation:

1)How many times as heavy as  Whiskers is  Piglio?

a) Write a multiplication equation for the question.

2 2/3 kg  * [x]= 4kg

b) Write a division equation for the question.

4/ 2 (2/3) = x

c) Is the answer greater than 1 or less than 1?

Ans) Greater than 1                      

d) Find the answer

4/ 8/3= x

x= 3/2= 1 1/2

Pigilo is 1 1/2 times as heavy as whiskers

2)How many times as heavy as Piglio is Whiskers?

a) Write a multiplication equation for the question.

4 kg  * [x]=  2 2/3 kg

b) Write a division equation for the question.

2 (2/3)/4  = x

c) Is the answer greater than 1 or less than 1?

Ans) Less than 1                      

d) Find the answer

 8/3/4= x

  8/3 * 1/4= x

   2/3= x

Whiskers is 2/3 times as heavy as Pigilo.

5 0
3 years ago
The perimeters of the square and the regular pentagon are equal. A square with side lengths of 3x + 3. A pentagon with side leng
Elena-2011 [213]

Answer:

60

Step-by-step explanation:

Since the perimeters are equal then:

(3x + 3) * 4 = (x + 8) * 5

12x + 12 = 5x + 40

7x = 28

x =4

Perimeter of square = (3*4 + 3) * 4 =

(12 + 3) * 4 = 60

Perimeter of pentagon = (4 + 8) * 5 =

(12) * 5 = 60

The answer is 60

8 0
3 years ago
A university designs its campus with a master plan of two concentric circles. All of the academic buildings are within the inner
Paul [167]

Answer:

x^2+y^2=36100000

Step-by-step explanation:

Here it is mentioned that the there are two concentric circles this means that they have the same center.

The center of the circles are the origin (0,0).

Radius of the outer circle is

r=\dfrac{3800}{2}=1900\ \text{m}

Equation of a circle

(x-a)^2+(y-a)^2=r^2

where

a\ \text{and}\ b\ \text{are the}\ x\ \text{and}\ y\ \text{coordinates of the center}

r=\text{Radius of the circle}

Here the equation will be

(x-0)^2+(y-0)^2=1900^2\\\Rightarrow x^2+y^2=3610000

The equation of the outer circle is x^2+y^2=3610000

3 0
3 years ago
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