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Diano4ka-milaya [45]
4 years ago
8

Can you help please?!

Mathematics
2 answers:
IrinaK [193]4 years ago
6 0
For the first one, its 86 square in, and the second one is 45 square cm.
timurjin [86]4 years ago
3 0

Answer: 1. 86in 2. 45cm


Step-by-step explanation:

I like to see the shapes having 2 seperate rectangles. For the first one, the rectangles are the big one on top, and the smaller on before it. For the second one, the top of the "L" shape is one, and the bottom part is another.

Remember, the expression to find area is base times height.

There are also some numbers in there to sorta trick you; In the first one, the 12in on the left doesn't matter, and in the second one, the 9cm on the left doesn't matter, and the lower 6cm doesn't matter.

For the first one, you'll do 8*7 to find the area of the big rectangle on top, and 5*6 to find the area of the smaller one. You get 56 for the big one, and 30 for the small one, so combined it has an area of 86in.

For the second one, you do the top part of the "L" first, so 3*6. Next, the bottom part, which is 3*9. We get 18 and 27, giving us 45cm.

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Solve each equation. Show all your work. Round your answers to four decimal places. (a) 7^4x=10,(b)ln(2)+In(4x-1)=5
KengaRu [80]
A.) 7^4x = 10
log base 10 (7^4X) = log base 10 (10)
4x log base 10 (7) = 1
4x (0.8451) = 1
3.3804x = 1
x = 0.2958

b.) ln(2) + ln(4x-1) = 5
ln (2 * 4x-1) = 5
ln (8x-2) = 5
log base (3) (8x-2) = 5
e^5 = 8x-2
e^5+2 = 8x
x = 18.8016
4 0
3 years ago
Two equations are given below
natulia [17]

Answer:

(-5,-3)

Step-by-step explanation:

In this case to find the solution you could use substitution. This way you can solve without changing the equation over again.

(b - 2) - 3b = 4

b - 2 - 3b = 4

-2b - 2 = 4

-2b = 6

b =  -3

Plug back in to find value a

a = (-3) - 2

a = -5

Check your answer before submitting

(-5) - 3(-3) = 4

-5 + 9 = 4

4 = 4

Hope this helps

5 0
3 years ago
For the right triangles below, find the exact values of the side lengths and .
konstantin123 [22]

Answer:

c=\frac{2\sqrt{3}}{3}

h=3\sqrt{2}

Step-by-step explanation:

Please see the attached image. It is a good idea it to memorize these triangle properties because you will definitely use them in the future.

c=\frac{2}{\sqrt{3} } =\frac{2*\sqrt{3} }{\sqrt{3} *\sqrt{3} } =\frac{2\sqrt{3}}{3}

h=3\sqrt{2}

5 0
3 years ago
2. Alex says that to find the volume of a cube he used the formula I.w.h. Julie says that formula she uses is l to the power of
GarryVolchara [31]
Julie is correct because LxWxH only applies to 2 dimensional shapes so therefore you need to use x to the power of 3 formula
8 0
3 years ago
Read 2 more answers
Please help i need it quick <br><br> 2x + 5x-4-7 (x+1) - 5
iren2701 [21]

The answer is <u>-16</u>

<em>Hope this answeris helpful....</em>

<em>Hope this answeris helpful....Make me as brainliest....</em>

6 0
4 years ago
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