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3 years ago

Please help me out i will mark brainliest!

Mathematics

2 answers:

asambeis [7]3 years ago

8 0

Answer:

y=-x+2

x+y=2

Step-by-step explanation:

hopefully this helps :)

jekas [21]3 years ago

7 0

Answer:

y = -x + 2

x + y = 2

Step-by-step explanation:

y = mx + b

y = mx + 2 (0,2) (2,0)

$\frac{2 - 0}{0 - 2}$ = $\frac{2}{-2}$ = -1

y = -x + 2

Ax + By = C

y = -1x + 2

x + y = 2

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Sophia exchanged 1,000 US dollars for the south African currency. the exchange rate was 7.15 rand to $1.00.

mel-nik [20]

1 / 7.15 = 1000 / x......$ 1 to 7.15 rand = $ 1000 to x rand
cross multiply because this is a proportion
(1)(x) = (7.15)(1000)
x = 7150 <=== Sophia got 7150 rand

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3 years ago

Michele wanted to measure the height of her school’s flagpole. She placed a mirror on the ground 48 feet from the flagpole, then

zepelin [54]

Refer to the diagram below for the sketch of the position of the mirror, Michelle, and the flagpole.

Using similar triangle concept, to find the height of the flagpole, we first need to find out the scale factor of the horizontal distance.
We write this as ratio
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12ft : 48ft
1 : 4

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Answer: A

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3 years ago

Solve the simultaneous linear equations using substitution method

fgiga [73]

The answer is going to be(2,1)

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3 years ago

Elmer walked 5.4 miles every day. How far did he walk in 11 days?

AURORKA [14]

Answer:

59.4

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

- Find the discriminant of –3x2 - 4x +6=0.

lyudmila [28]

Answer:

Answer:

The value of discriminant is 384

There are two different real roots for the equation

Step-by-step explanation:

* Lets explain what is the discriminant

- In the quadratic equation ax² + bx + c = 0, the roots of the

equation has three cases:

1- Two different real roots

2- One real root or two equal real roots

3- No real roots means imaginary roots

- All of these cases depend on the value of a , b , c

∵ The rule of the finding the roots is

x = [-b ± √(b² - 4ac)]/2a

- The effective term is b² - 4ac to tell us what is the types of

the roots

# If the value of b² - 4ac is positive means greater than 0

∴ There are two different real roots

# If the value of b² - 4ac = 0

∴ There are two equal real roots means one real root

# If the value of b² - 4ac is negative means smaller than 0

∴ There is no real roots but the roots will be imaginary roots

∴ We use the discriminant to describe the number and type of roots

* Now lets solve the problem

∵ -3x² - 18x + 5 = 0

∴ a = -3 , b = -18 , c = 5

∵ Δ = b² - 4ac ⇒ (Δ is the discriminant symbol)

∴ Δ = (-18)² - 4(-3)(5) = 324 - (-60) = 324 + 60 = 384

∴ The value of discriminant is 384

∵ The value of discriminant greater then 0

∴ There are two different real roots for the equation

Read more on Brainly.com - brainly.com/question/12710936#readmore

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers