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3 years ago

Help! I'll give brainliest!

Mathematics

1 answer:

Anni [7]3 years ago

3 0

Answer:

b. 256

Step-by-step explanation:

Data:

W= 8

L= 8

H= 8

soln:

firstly the formula of lateral area is

LSA = (2W+2L) H

therefore:

LSA = (2×8+2×8) 8

LSA = (16+16) 8

LSA = (32) 8

LSA = 256

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Describe the steps that you would use to generate an expression equivalent to 8.1b+6.7a+2.5+7+.9a-2.8b

bija089 [108]

Explanation:

1. Identify the different constellations of variables. Here there are three:

b
a
(none)

2. Combine coefficients of each of the different variable constellations:

(8.1 -2.8)b +(6.7 +0.9)a +(2.5 +7)

5.3b +7.8a +9.5

3. Perform any other operations that might be required depending on the sort of equivalent wanted. For example, one could write ...

5.3(b +(78/53)a) +9.5 . . . . . . . shows the weight of a relative to b

6 0

3 years ago

HELP NOWW!!!<br> PLSS I NEED HELP RIGHT NOWWW!!<br> PLS HELP

NemiM [27]

Answer:

x = 55

Step-by-step explanation:

Draw a line parallel to the top and bottom parallel lines so this new line goes through the pointed end of x.

Draw another line parallel to the top and bottom lines through the pointy end of 45.

The bottom angle of the line through 45 is 15 degrees (alternate interior angles.

The top angle is 45 - 15 = 30

The bottom angle of the line going to x is 150 degrees. It and the 30 degree angle make 180. 30 + 150 = 180

One final observation The top angle of made by the line going through x is 180 - 25 = 155

What you have now is

155 + 150 + x = 360

305 + x = 360

x = 360 - 305

x = 55

6 0

2 years ago

Read 2 more answers

1. Slove the system of equations, first by graphing, and then algebraically. (8 points) y=x-2 and y=-2x+7

Anton [14]

The solution of the equation is $x=3$ and $y=1$

Explanation:

The equations are $y=x-2$ and $y=-2 x+7$

First we shall solve the equation graphically.

The image of the graph is attached below.

This contains the solution to the system of equations.

The equations $y=x-2$ and $y=-2 x+7$ are plotted on the graph.

The intersection of these two equations are the solutions of the system of equations.

Thus, the intersection of the two equations are $x=3$ and $y=1$

Now, we shall solve the equation algebraically.

Let us solve the equation using substitution method.

Let us substitute $y=x-2$ in $y=-2 x+7$ , we get,

$x-2=-2x+7$

Adding both sides by 2x, we have,

$3x-2=7$

Adding both sides by 2, we get,

$3x=9$

Dividing both sides by 3,

$x=3$

Thus, the value of x is 3.

Substituting $x=3$ in $y=x-2$ , we get,

$y=3-2\\y=1$

Thus, the value of y is 1.

Hence, The solution of the equation is $x=3$ and $y=1$

4 0

2 years ago

Write root of 2 correct to (a) 6 d.p

Solnce55 [7]

Answer:

1.414214

Step-by-step explanation:

Value is 1.41421<u>35</u>623730950488016887242097...

Since 7th digit is a 5, the 3 gets rounded to a 4 at the end.

6 0

2 years ago

Please help me please I reallly need help

kiruha [24]

Answer:

we have:

$v = \frac{1}{3} \pi \: r {}^{2}h \\ \\ = > 60\pi = \frac{1}{3} \pi \: r {}^{2} h \\ \\ < = > 180 = r {}^{2} h$

=> r²h = 10.18 = 9.20 = 5.36 = 6.30 = 4.45 = 12.15

=> only r²h = 5.36 satisfy the problem

=> h = 5

h = 5 r = 6

h = 5 r = 6=> d = 12

3 0

2 years ago