All categories

3 years ago

Please write the explanation thanks

Mathematics

1 answer:

DedPeter [7]3 years ago

3 0

$\frac{7}{12}\cdot30=\frac{7}{2}\cdot5=\frac{35}{2}=\$17.5\leftarrow \hbox{ Joseph}\\
30\%\cdot30=0,3\cdot30=\$9\leftarrow \hbox{ Maria}\\
30-17.5-9=\$3.5 \leftarrow \hbox{ Rebecca}$

You might be interested in

PLEASE HURRY WILL GIVE BRAINLIEST TO FASTES PERSON

mezya [45]

Answer:

First is True Second is False Third is True Fourth is False and the last one is False

Step-by-step explanation:

Please give Brainliest

3 0

3 years ago

Remember to identify the length, width,

Amiraneli [1.4K]

Answer:

If the prism is trapezoid then you need to find the height and use this formula

1/2 x a+b x h

This has been done below you only need to fill in the height and do the shape for 3cm x 2cm as you haven't been clear in your question.

Volume = 8 x h x 10 = 80 x h cm^3

Hope this helps.

Step-by-step explanation:

Slope triangle prism and or rectangle

The area can be seen either by finding height of the triangle or working out the rectangle and halving the rectangle.

Step-by-step explanation:

Volume

6 x 8 = 48cm^2

48 x 5 = 230cm^2 for double (rectangle prism of 6 x8)

385/2 = 115cm^2 triangle slope prism

---------------

Area first

trapezoid front measures 6,5, 10

1/2 x 6 + 5 x h

=1/2 x 6 + 5 x h

= 8 x h x 10= 80 x h

Volume = 8 x h x 10 = 80 x h cm^3

5 0

3 years ago

Evaluate -3.2 + ] (16.4) – 3 =

Maksim231197 [3]

Answer:

10.2

Step-by-step explanation:

-3.2+(16.4)-3=

13.2-3

10.2

3 0

3 years ago

What is a possible scale factor for the dilation of the quadrilateral ABCD?

slamgirl [31]

Answer:

$\dfrac {1}{2}$

Step-by-step explanation:

According to the diagram

The center is o

Then Distance from O to B'C'=1

Distance from O to BC=1+1=2

$\therefore\sf Ratio\:is\:1:2.$

<h3>More to know:-</h3><h3>Formulas related to surface area and volume:-</h3>

$\begin{array}{|c|c|c|}\cline{1-3}\bf Shape&\bf Volume\ formula&\bf Surface\ area formula\\\cline{1-3}\sf Cube&\tt l^3}&\tt 6l^2\\\cline{1-3}\sf Cuboid&\tt lbh&\tt 2(lb+bh+lh)\\\cline{1-3}\sf Cylinder&\tt {\pi}r^2h&\tt 2\pi{r}(r+h)\\\cline{1-3}\sf Hollow\ cylinder&\tt \pi{h}(R^2-r^2)&\tt 2\pi{rh}+2\pi{Rh}+2\pi(R^2-r^2)\\\cline{1-3}\sf Cone&\tt 1/3\ \pi{r^2}h&\tt \pi{r}(r+s)\\\cline{1-3}\sf Sphere&\tt 4/3\ \pi{r}^3&\tt 4\pi{r}^2\\\cline{1-3}\sf Hemisphere&\tt 2/3\ \pi{r^3}&\tt 3\pi{r}^2\\\cline{1-3}\end{array}$

6 0

3 years ago

Help plz I don't understand and SHOW ME HOW YOU GOT IT!!!!!!!!

AysviL [449]

(48-7)x(56+19)
First of all you need to work out the brackets.
48-7=41
56+19=75
This turns the question to: 41x75
When multiply decimals you can split the numbers up into the tens and units.
40x70=2800
40x5=200
1x70=70
1x5=5
2800+200+70+5= 3075
This answer would be 3075.

6 0

3 years ago