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2 years ago

Could 2.8 cm, 4.0 cm and 2.8 cm be the side lengths of a triangle?

Mathematics

1 answer:

elixir [45]2 years ago

7 0

Answer:

Yes they can

Step-by-step explanation:

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Find the value of y picture *****

77julia77 [94]

I think its 54 too soo

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3 years ago

What is the answer to this?<br> -6+13=

Ket [755]

Answer: -6+13=7

Step-by-step explanation:

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2 years ago

Roshan makes the table below to describe how to draw a ray diagram for a convex lens.

VikaD [51]

Answer:

The ray that goes parallel to the main axis after passing through the lens should also be parallel from the object to the lens

Step-by-step explanation:

To form the image of an object using a convex lens, ray diagrams are used. The following steps are followed when drawing ray diagrams.

1) Light rays are drawn from the object incidented on the lens and parallel to the principal axis. The incident light refracts (bends) through the lens and converges at the focal point at the other side of the lens.

2) Another incident light passes through the optical centre undeflected and intersect with the refracted ray at the other side of the lens.

Based on the above points, Roshan made an error by drawing the ray that goes parallel to the main axis and after passing through the lens made the same ray to be parallel from the object to the lens instead of refracting (bending) after passing through the lens.

7 0

3 years ago

Read 2 more answers

Plot (25/3) and (42/3) on the number line.

ss7ja [257]

Answer:

Refer to the Attachment

Step-by-step explanation:

Rewriting the fractions in decimal and whole number, we have the following:

$\frac{25}{3} = 8\frac{1}{3} = 8.3$

$\frac{42}{3} = 14$

Thus, 42/3 is on 14 and 25/3 is on 8 and then add 1/3 from 8 going to 9.

Therefore, the points must be plotted as follows:

The blue point indicates the 42/3 while the red point indicates the 25/3.

8 0

2 years ago

A survey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand X aspirin. How many doctors use brand X aspirin

VladimirAG [237]

This is a proportion problem that involves cross-multiplication
Set your problem up like so:
$\frac{x}{2,000}$ = $\frac{3}{5}$

Now cross multiply
2,000 x 3 = 6,000
now you're left with 5x = 6,000
Now divide by 5 on both sides
Answer is 1,200

7 0

3 years ago