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vovikov84 [41]
4 years ago
11

Erica knits 18 squares on monday. She knits 7 more squares each day for the rest of the week . how many squares does Erica have

on friday?
Mathematics
1 answer:
egoroff_w [7]4 years ago
4 0
Monday 18 + Tuesday +7 Wednesday +7 Thursday +7 Friday +7 = 46
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What is the distance between (2,-9) and (-1,4)
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Answer:

total distance might be 16

Step-by-step explanation:

|y2-y1/x2-x1|, plug it the numbers, if you got a negative number, its just positive since the equation is set to absolute value

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In the diagram below, the area of $\triangle BCD$ is 60. What is the length of side $\overline{BC}$?
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Area of triangle = 1/2 bh

60 = 1/2 (15) h

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3 years ago
-5x is - 40 + 3x<br> Find x
irina [24]

Answer: x = 5

Step-by-step explanation:

1. Set the two given expressions equal to each other (because the problem says they are interchangeable)

-5x = -40+3x

2. Subtract 3x from -5x to have x on one side of the equation.

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3. Divide each side by -8 to get the value of x.

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8 0
3 years ago
Francesca is looking at an airplane. She measures the angle at which she is looking up and finds it to be 55 degrees. If the air
lions [1.4K]
<h2>Answer:</h2>

Option: B is the correct answer.

                    B. 36,623 feet

<h2>Step-by-step explanation:</h2>

The angle of elevation is: 55 degree

We model this problem by taking a right angled triangle such that the side opposite to the 55 degree is of length 30000 feet.

Now let us consider x denote the distance of the plane from Francesa.

i.e. x denote the hypotenuse of the right angled triangle.

Hence, in right angled triangle i.e. ΔABC we have:

\sin 55=\dfrac{30000}{x}\\\\i.e.\\\\x=\dfrac{30000}{\sin 55}\\\\i.e.\\\\x=\dfrac{30000}{0.81915}\\\\\\i.e.\\\\\\x=36623.2376\ feet

Round to the nearest feet we get: x=36,623 feet

6 0
4 years ago
Read 2 more answers
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