All categories

3 years ago

Enter the value of 21 + (-3) - (-0.9). PLSS

Mathematics

1 answer:

fomenos3 years ago

8 0

Answer:

18.9

Step-by-step explanation:

21+(-3)-(-0.9) = 21-3+0.9 = 18+0.9 = 18.9

You might be interested in

What happens to the center of a figure when it is dilated about the origin?

alina1380 [7]

There are 2 answers for this in my opinion
1. nothing happens because its still in the origin and that won't change
2. depending on which way you turn it the points will change based on that

so if you know how to use a graph you should be good

7 0

4 years ago

(4,?) is on the line below. Find the other half of the coordinate. y=3/4x+3. Solve

Nikitich [7]

Answer:

y = 6

Step-by-step explanation:

Given

y = $\frac{3}{4}$ x + 3 and (4, ? )

Substitute the x- coordinate x = 4 into the equation for corresponding value of the y- coordinate.

x = 4 : y = $\frac{3}{4}$ × 4 + 3 = 3 + 3 = 6

Hence the coordinate point is (4, 6)

5 0

4 years ago

In the following figure, the square ABCD is inscribed in the circle centered at point P. What is the area of the circle?

Ainat [17]

Answer:

$A_{Circle} \approx 39.24\: units^2$

Step-by-step explanation:

Square ABCD is inscribed in a circle with center P such that BC = 5 units.

BD will be diagonal of the square as well as diameter of the circle.

$BD = BC\times\sqrt 2$

$\implies BD = 5\sqrt 2$

-> Diameter of the circle $(d) = 5\sqrt 2$

-> Radius of the circle $(r) = 2.5\sqrt 2=3.535\: units$

$A_{Circle} =\pi(r)^2$

$\implies A_{Circle} =3.14(3.535)^2$

$\implies A_{Circle} =39.2381465$

$\implies A_{Circle} \approx 39.24\: units^2$

8 0

3 years ago

Two triangular pyramids are similar. The volume of the larger pyramid is 729 cm3 , and the volume of the smaller pyramid is 64 c

kirill [66]

Answer: Second Option is correct.

Step-by-step explanation:

Since we have given that

Volume of larger pyramid = 729 cm³

Volume of smaller pyramid = 64 cm³

So, Ratio of volume of larger pyramid to volume of smaller pyramid is given by

$\dfrac{729}{64}=\dfrac{9^3}{4^3}$

So, Ratio of side of larger pyramid to side of smaller pyramid is given by

$\dfrac{9}{4}$

Now, Perimeter of base of smaller pyramid = 8 cm

So, We need to find the perimeter of larger pyramid.

So, it becomes,

$\dfrac{\text{Side of larger pyramid}}{\text{Side of smaller pyramid}}=\dfrac{\text{Perimeter of larger pyramid}}{\text{Perimeter of smaller pyramid}}\\\\\dfrac{9}{4}=\dfrac{x}{8}\\\\x=\dfrac{9\times 8}{4}=\dfrac{72}{4}=18\ cm$

Hence, Perimeter of the base of the larger pyramid is 18 cm².

Therefore, Second Option is correct.

4 0

4 years ago

Read 2 more answers

What is the value of 10 + (-4)? Possible answer's' 6 -14 -6 14

Makovka662 [10]

The answer is 6 because it’s basically saying 10-4

4 0

4 years ago