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3 years ago

Please help me with this algebra question

Mathematics

1 answer:

Diano4ka-milaya [45]3 years ago

8 0

The question is where?

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Can someone please explain why x= -2! ASAP!!

bearhunter [10]

Because you add both negative x’s which is -2 and add the -6 in the right side so then it’s -2x=4
Divide and you get x=-2

6 0

3 years ago

Read 2 more answers

use formulas to find the lateral area and surface area of the given prism. Round your answer to the nearest whole number.

Jobisdone [24]

Answer:

Second Option

671 m²; 725 m²

Step-by-step explanation:

The lateral area of a triangular prism is:

$A_L = Ph$

Where P is the perimeter of the triangular base and h is the height of the prism.

In this case, the perimeter of the triangular base is:

$P = 9 + 6+ 10.82\\\\P = 25.82\ m$

Then the height is 26 m

Then the lateral area of the prism is:

$A_L = 25.82 * (26)\\\\A_L = 671\ m ^ 2$

Therefore the surface area of the triangular prism is:

$A = 2A_B + A_L$

Where $A_B$ is the area of the base.

$A_B = \frac{bh}{2}$

Where b is the base of the triangle and h is the height

In this case:

$b = 9\ m\\\\h = 6\ m\\\\A_B = \frac{9 * 6}{2}\\\\A_B = 27\ m ^ 2$

Finally

$A = 2 * 27 + 671\\\\A = 54 + 671\\\\A = 725\ m ^ 2$

The answer is 671 m² and 725 m²

3 0

3 years ago

Four times the sum of a number and -3 is 28

tatuchka [14]

Answer:

The number is equal to 10

Step-by-step explanation:

Let x be the number

4(x-3)=28

x-3=7

x=10

8 0

3 years ago

The length of a rectangle is 5 units more than twice its width. Find an expression for the perimeter of the rectangle.

kolezko [41]

The width would be 10
length would be 15

8 0

3 years ago

Find the product. (-5a ^2)^3 · a^5

GrogVix [38]

Answer:

−125a^(11)

Step-by-step explanation:

(−5a^(2)3a^(5) Then you solve

=−125a^(11)

4 0

3 years ago