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Lera25 [3.4K]
2 years ago
14

I need help on this! ASAP

Mathematics
2 answers:
strojnjashka [21]2 years ago
3 0

Answer:

-2

Step-by-step explanation:

Good luck! :)

DENIUS [597]2 years ago
3 0

Answer:

A. -2

Step-by-step explanation:

The square root of 256 is 16 and the square root of 324 is 18. 16 - 18 = -2

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Find the surface area of the rectangular prism
SCORPION-xisa [38]
5.5 • 5= 27.5+27.5+65+65+71.5+71.5=328

13•5=65
13•5.5=71.5

THE ANSWER IS 328
7 0
2 years ago
Read 2 more answers
A new shirt costs $14.99. If the shirt in sale for 1/5 off its price, about much would you save. SOLUTION PLS
Tasya [4]

Answer:

As per the given condition:

A new shirt costs $14.99.

If the shirt has a sale for \frac{1}{5} off its price.

Now, we find how much you save on this shirt:

First find the \frac{1}{5} of $14.99

i.e,  

\frac{1}{5} \times \$14.99 = \frac{\$14.99}{5} =\$ 2.998

⇒ you have the discounted value is $ 3 .

You pay for the shirt is: $14.99 -$ 2.998 = $11.992

Therefore, you would save $2.998 or $ 3 in buying your new shirt.


5 0
3 years ago
Read 2 more answers
Select point B, and drag it. As you drag B, circle AB changes. Verify that you can make circle AB coincide with AC. Return B to
-BARSIC- [3]

Answer:

When AB coincides with AC, the boundary of EAF maps exactly onto the boundary of CAD, implying that EAF dilates into CAD. So, the boundaries of EAF and CAD are similar.

The proportional relationship may be stated in different forms, but should be equivalent to this equation:

radius of Ab/ radius of Ac= length of arc EF/ length of arc CD

Explanations will vary, but should be based on the similarity of EAF and CAD. The proportional relationship follows from the fact that corresponding pairs of lengths in two similar figures have the same ratio.

Step-by-step explanation:

This is the exact answer so make sure you change it up a little.

8 0
3 years ago
P is a rectangle with a length 40 cm and width x cm
TiliK225 [7]
The first thing we must do for this case is to look for the area of each rectangle.
 We have then:
 A1 = (40) * (x)
 A2 = (1.25 * 40) * (y)
 Then, we have the following relationship between areas:
 "the area of Q is 10% less than the area of p"
 A2 = 0.9 * A1
 Substituting values we have:
 (1.25 * 40) * (y) = 0.9 * ((40) * (x))
 We rewrite:
 50y = 36x
 The relationship x: y is:
 x / y = (50) / (36)
 Simplifying:
 x / y = (25) / (18)
 Answer:
 
the ratio of x:y is:
 
25:18
3 0
2 years ago
A scientist needs to make 2 liters of saline solution (salt water), in which the salt level must be at 15% concentration (meanin
slamgirl [31]

Answer:

We need 1.6 liters of the 10 % concentration level and saline solution  and 0.4 liters of the 35 % concentration level and saline solution.

Step-by-step explanation:

Let V₁ be the volume of the 10% concentration saline solution required and V₂ be the volume of 35% concentration saline solution required.

Since mass = concentration × volume, the total mass of the 10% and 35% volume saline solution equal the mass of the 2 liter 15% volume solution.

So, 0.1V₁ + 0.35V₂ = 2 × 0.15

0.1V₁ + 0.35V₂ = 0.3 (1)

Also, the total volume of the 15 % solution must equal 2 liters. So,

V₁ + V₂ = 2 (2)

V₁ = 2 - V₂  (3)

putting equation (3) into equation (1), we have

0.1(2 - V₂) + 0.35V₂ = 0.3

0.2 - 0.1V₂ + 0.35V₂ = 0.3

we now collect terms, so

- 0.1V₂ + 0.35V₂ = 0.3 - 0.2

0.25V₂ = 0.1

we now divide through by 0.25, so

V₂ = 0.1/0.25

V₂ = 0.4   liters  

we now put V₂ into (3), we have,

V₁ = 2 - 0.4  

V₁ = 1.6 liters

So, we need 1.6 liters of the 10 % concentration level and saline solution  and 0.4 liters of the 35 % concentration level and saline solution.

3 0
3 years ago
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