All categories

4 years ago

-4.75 + (-2.75) + 1

Mathematics

2 answers:

scZoUnD [109]4 years ago

6 0

-6.5 because -4.75 + (-2.75) + 1 =
-3.75 -2.75 which is equal to -6.5

Ket [755]4 years ago

4 0

Answer:

-6.5

Step-by-step explanation:

You might be interested in

Marcel had drama practice 8.75 hours from Monday to Friday if he practices the same amount each day how many hours does marcel s

AURORKA [14]

It would be 1.75 hours each day

5 0

3 years ago

One brother says of his younger brother: “Two years ago, I was three times as old as my brother was. In three years’ time, I wil

aleksklad [387]

Answer:

Step-by-step explanation:

Let us suppose two years ago my brother's age was x years

Then, my age was 3x

Three years from now, my brother's age will be (x +2+3) = (x+5) years

And my age will be (3x+2+3) = (3x+5) years

But it is given that i will be twice as old as my brother.

So, 2(x+5)= (3x+5)

or, x= 5 years

So my brother's present age is 5+2= 7 years

And my age is 5*3+2= 17 years

5 0

3 years ago

Read 2 more answers

How to move variable from denominator to numerator?

abruzzese [7]

By changing their exponent to negative.

Ex.
$\frac{1}{ {x}^{2} } = {x}^{ - 2} \\ \frac{2}{y} = 2 {y}^{ - 1}$

5 0

3 years ago

Work out the volume of the shape

pashok25 [27]

Answer:

$\large\boxed{V=\dfrac{1,421\pi}{3}\ cm^3}$

Step-by-step explanation:

We have the cone and the half-sphere.

The formula of a volume of a cone:

$V_c=\dfrac{1}{3}\pi r^2H$

r - radius

H - height

We have r = 7cm and H = (22-7)cm=15cm. Substitute:

$V_c=\dfrac{1}{3}\pi(7^2)(15)=\dfrac{1}{3}\pi(49)(15)=\dfrac{735\pi}{3}\ cm^3$

The formula of a volume of a sphere:

$V_s=\dfrac{4}{3}\pi R^3$

R - radius

Therefore the formula of a volume of a half-sphere:

$V_{hs}=\dfrac{1}{2}\cdot\dfrac{4}{3}\pi R^3=\dfrac{2}{3}\pi R^3$

We have R = 7cm. Substitute:

$V_{hs}=\dfrac{2}{3}\pi(7^3)=\dfrac{2}{3}\pi(343)=\dfrac{686\pi}{3}\ cm^3$

The volume of the given shape:

$V=V_c+V_{hs}$

Substitute:

$V=\dfrac{735\pi}{3}+\dfrac{686\pi}{3}=\dfrac{1,421\pi}{3}\ cm^3$

7 0

3 years ago

What would be the correct notation for the following line

natima [27]

Answer:

Its A :))

Step-by-step explanation:

4 0

2 years ago