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Svetach [21]
3 years ago
14

Evaluate the expression 4 (9-16)

Mathematics
1 answer:
AlexFokin [52]3 years ago
3 0

Answer:

-28

Step-by-step explanation:

multiply both 9 and 16 by 4 and then subtract the sum of 16 × 4 from 9 × 4.

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Simply each question
dalvyx [7]
2x-8y////2r+5+3r-s+11=5r+16-s////-7x+7
8 0
3 years ago
The length of a rectangle is 1 unit more than the width. The area of the rectangle is 56 units. What is the width in units of th
Mandarinka [93]

Answer:

Width = 7units

Step-by-step explanation:

The area of a rectangle

A = h * w

A - area of a rectangle

h - height of a rectangle

w - width of a rectangle

Or

A = length * breadth

It's all the same

Given :

h = 1 + w

w = w

A = 56

56 = ( 1 + w) * w

56 = ( 1 + w)w

56 = w + w^2

56 = w^2 + w

w^2 + w - 56 = 0

Find a factor that can be multiplied to give -56

and added to give + 1

The factor is 8 and -7

Substitute 8w - 7w for w

w^2 + 8w - 7w - 56 = 0

( w^2 + 8w) - (7w - 56) = 0

w( w + 8) - 7( w + 8) = 0

( w - 7) = 0

( w + 8) =0

w - 7 = 0

w = 7

w + 8 = 0

w = -8

Since a side of any rectangle can not be negative

w = 7

The width of the rectangle is 7units

The length of the rectangle is 1 + w = 1 + 7 = 8units

4 0
3 years ago
How many cubic inches of material do you need to make a solid rubber ball with diameter<br> of 3
Lera25 [3.4K]

Answer:

Step-by-step explanation:

What we're looking for here is the volume of this ball, which is the volume of a sphere:

V=\frac{4}{3}\pi  r^3

If our diameter is 3, then the radius is 1.5:

V=\frac{4}{3}\pi  (1.5)^3

In terms of π, the solution is

4.5\pi which can also be expressed as \frac{9\pi }{2}

Or if you have to multiply in the pi, the solution is

V = 14.14 cubic inches

6 0
3 years ago
Read 2 more answers
naomi's fish is 40 millimeters long. her guinea pig is 25 centimeters long. how much longer is the guinea pig than her fish
horrorfan [7]
Hi there!

The correct answer is 6.25 times.

This is how you get there:

1) First off, you are going to need to have the same unit (either cm or mm). I used millimeters for this problem. 25cm=250mm

2) This next part is very easy to get wrong. You need to figure out what you are dividing, and by what. Simply look at the problem. <span><em>"How much longer is the guinea pig than her fish?" </em>This shows what numbers you should be getting. The guinea pig is 250mm long, where the fish is only 40. This means that her guinea pig should be larger. 250÷40=6.25

If you did this problem the other way, you would've ended up with .16. If you put the sizes into perspective, you will notice that this is highly unlikely.

I hope that I have been able to simplify this problem for you!

Brady
</span>
3 0
3 years ago
The 5 in 6.052 has 1/10 the value of the 5 in _____? a)0.815 b)53.2 c)4.45 d)7.5
olasank [31]
Would it be a correct me if im wrong
3 0
4 years ago
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