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Tatiana [17]
3 years ago
12

Can someone please help me with both questions I’ll Mark brainlist !

Mathematics
1 answer:
Dmitriy789 [7]3 years ago
5 0

Answer:

11-)B, x = 10.5,

8-)B

Step-by-step explanation:

11-)

12X = 14 x 9

X = 10.4

.

8-) (a + b)/2 x (h) = (10 + 6)/2 x X

.

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I need help. So it says to find the shaded area, and I'm not really good a things like this
krek1111 [17]

Answer:

86 cm²

Step-by-step explanation:

<u>1) Calculate the area of the square</u>

A=lw\\A=20*20\\A=400

Therefore, the area of the square is 400 cm².

<u>2) Calculate the area of the circle</u>

A=\pi r^2\\

\pi we can substitute with 3.14. To find the radius, we divide the diameter of the circle by 2. 20 cm is the diameter of the circle, so therefore, its radius is 10 cm.

A=3.14*10^2\\A=3.14*100\\A=314

Therefore, the area of the circle is 314 cm².

<u>3) Subtract the area of the circle from the area of the square</u>

A=400-314\\A=86

Therefore, the area of the shaded region is 86 cm².

I hope this helps!

3 0
3 years ago
Read 2 more answers
Can someone answer B please???
lbvjy [14]
A)

150 were surveyed, possible outcomes, and 132 said they prefer dogs, favorable outcomes,   132/150 or 22/25 or 0.88, now 0.88 * 100 is just 88, namely 88% is the probability.

b)

since we know is 88%, what is 88% of 100?  (88/100) * 100, 0.88 * 100, or just 88 students.

c)

18/150 or 3/25 or 0.12 namely 12%,

what's 12% of 300?  (12/100) * 300, or 0.12 * 300, so just 36 students.
8 0
3 years ago
nick has to build a brick wall. Each row of the wall requires 6/2 bricks. There are 10 rows in the wall. How many bricks will ni
alex41 [277]

Answer:

D. 10 x 6/2

Step-by-step explanation:

each row = 6/2

10 rows all together

so you do 10 x 6/2

5 0
3 years ago
Can you help me solve systems of equations by elimination step by step<br> 6x+y=15<br> -7x-2y=-10
Anna71 [15]

Answer:   (4, -9)

<u>Step-by-step explanation:</u>

Use elimination method.  Manipulate one (or both) equations to eliminate one of the variables and solve for the remaining variable.  <em>I will be eliminating y</em>

6x +  y =  15    → 2(6x +  y =  15)   →   12x + 2y = 30

-7x - 2y = -10   → 1(-7x + 2y = -10)   →  <u> -7x - 2y = -10</u>

                                                             5x        = 20

                                                               x         =  4

Next, replace "x" with "4" into either equation and solve for y.

6(4) + y = 15

24  + y = 15

         y  = -9


<u>Check:</u>

Plug in x = 4 and y = -9 into the other equation to verify it makes a true statement.

-7x - 2y = -10

-7(4) - 2(-9) = -10

-28  -   -18  = -10

-28  +  18 = -10

       -10    =  -10  \checkmark

6 0
3 years ago
-7 &lt; b/3 what is the answer
Nat2105 [25]
B > -21 is i think you answer.
3 0
3 years ago
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