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Dima020 [189]
3 years ago
13

Solving systems of equations by substitution y= x - 8 y = -4

Mathematics
1 answer:
leva [86]3 years ago
4 0
It should be x=-4 and y= -12
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Suppose someone tells you that she has a triangle with sides having lengths 3.5, 4.5 and 5.5 yards. Is this a right triangle?
Katarina [22]
You can solve by using Pythagoras theorem.
Let the longest side be c.
a^2 + b^2 = c^2
If this holds, it is a right angle.

But, 3.5^2 + 4.5^2 is not equal to 5.5^2.
5 0
3 years ago
Read 2 more answers
PLS HELP 40 POINTS
kupik [55]

Answer:

  • C. 5

Step-by-step explanation:

The area is the product of two dimensions.

If the ratio of sides is k, then the ratio of areas is k²

<u>We have:</u>

  • k² = 200/8
  • k² = 25
  • k = √25
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Correct choice is C

7 0
3 years ago
Help pls will give brainliest
Dahasolnce [82]

Answer:

hello,

answer C

Step-by-step explanation:

area of the rectangle=2b*b=2b²

area of the half cercle= \\\dfrac{\pi*(\frac{c}{2})^2}{2} =\dfrac{\pi*c^2}{8} \\

Area in blue= 2b²-πc²/8

8 0
3 years ago
Evaluate the exact value: tan(pi/6)
Sedbober [7]
Pi/6 = 180°/6 = 30°

This produces a triangle that has 30-60-90 angles.

Its short leg will measure = y = sinΘ
Its long leg will measure = x = √1-y² = sin(2Θ)
Its hypotenuse will measure = 1

Tangent Θ = opposite / adjacent or short leg / long leg
Tan(pi/6) = 1/3 √3

4 0
3 years ago
Read 2 more answers
In February, Mr. Williams opened a checking account and made deposits of $949, $1419, $1598, and $1289. He also wrote checks for
kkurt [141]

Based on the deposits and written checks, Mr. Williams' account balance at the end of the month is <u>$3,606</u>.

<h3>What is the account balance?</h3>

The account balance represents the net amount remaining in the account after subtracting the checks from the deposits.

Other factors are taken into account for determining the account balance, including direct credits and debits like bank transfers and charges for bank services.

Thus, the account balance can be utilized by Mr. Williams for his banking transactions in March.

<h3>Data and Calculations:</h3>

Total Deposits = $5,255 ($949 + $1419 + $1598 + $1289)

Total checks = $1,649 ($84 + $167 + $352 + $384 + $662)

Account balanced = $3,606 ($5,255 - $1,649)

Thus, based on the deposits and written checks, Mr. Williams' account balance at the end of the month is <u>$3,606</u>.

Learn more about account balances at brainly.com/question/2261596

#SPJ1

6 0
1 year ago
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