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Mekhanik [1.2K]

4 years ago

5

Can someone help me solve these three problems please??

1 answer:

Tasya [4]4 years ago

4 0

I'll solve 21, and you then should be able to solve the rest on your own!

Since ADC is 135, that means that that whole angle is 135 degrees. In addition, since angles ADB and BDC add up to ADC, we get ADB+BDC=ADC=135=11x+9+7x=18x+9. Subtracting 9 from both sides, we get 126=18x. Dividing both sides by 18, we get x=7. Plugging that into 11x+9=BDC, we get 11*7+9=77+9=86

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The sum of two numbers is 22 their difference is 4

ipn [44]

Answer:

x=13

Step-by-step explanation:

ok so let x+y=22

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

x and y are the 2 unkown Number

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

x-y=4

their difference is 4

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

add both equations

(x+y=22)

+(x-y=4)

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

y's cancel out

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

2x=26

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

x=13

3 0

3 years ago

Read 2 more answers

While the reindeer were home, it snowed 40 inches. When the weather became warmer, the snow began to melt 4.5 inches a day. If t

Minchanka [31]

You just divide!
40/4.5=8.8
so about 9 days

4 0

3 years ago

Read 2 more answers

Which of the following is the graph of the line y=-3/4x+5 ?

Naddika [18.5K]

Slope : -3/4
Y -intercept (0,5)

3 0

3 years ago

A rectangular flower bed is 7 m long. If the boundary

tester [92]

<h2>Given :-</h2>

Length of flower bed = 7 m

Perimeter of boundary = 22 m

<h2>To Find :-</h2>

Breadth
Area

<h2>Solution :-</h2>

As we know that

$\sf \blue{Perimeter = 2(l + b)}$

22 = 2(7 + b)

22 = 14 + 2b

22 - 14 = 2b

8 = 2b

$\sf \: \dfrac{8}{2} = b$

$\bold{\boxed{b=4} }$

<h3>Breadth = 4 m.</h3>

Now,

$\sf \orange{Area = l \times b}$

$Area = 7 \times 4$

$\sf \: Area = 28 \: {m}^{2}$

Area=28 $\bold{ m^2 }$

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3 years ago

Write a system of two linear equations showing the distance each animal can

pantera1 [17]

Answer:

X

Step-by-step explanation:

X=input(time) 6 minutes both

3 0

3 years ago