3 years ago

What method would you choose to solve the equation 2x^2-7=9? Explain why you chose this method

Mathematics

1 answer:

emmasim [6.3K]3 years ago

4 0

Answer:

PEMDAS

Step-by-step explanation:

parenthesis, exponents,multiplication,division,additon,substraction, these are the steps in order to follow when solving equations.

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Copy each statement. Insert , -, x, or division symbol to make each statement true.

Nana76 [90]

27/3+5x2=19
81+11-8x4x1=60

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3 years ago

naomi has earned $54 mowing lawns the past two days. she worked 2 1/2 hours yesterday and 4 1/4 hours today. if naomi is pains t

Vaselesa [24]

Answer:

Naomi charges $8 an hour to mow lawns

Step-by-step explanation:

first day // 2 1/2= 2.5 hrs

2nd day // 4 1/4= 4.25 hrs

2.5hrs + 4.25hrs = 54hrs // 6.75hrs = 54hrs

/6.75 /6.75

= 8hrs

Really hope this helps!

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3 years ago

What is the midpoint of the line segment that has endpoints (3,8) and (1,−4) ?

bezimeni [28]

Answer:

Step-by-step explanation:

<em>Midpoint Formula:</em>

$\frac{x_{1}+x_{2}}{2}, \frac{y_{1}+y_{2}}{2}$

$\frac{3+1}{2}$ ⇒ $\frac{4}{2}$ ⇒ $2$

$\frac{8+-4}{2}$ ⇒ $\frac{8-4}{2}$ ⇒ $\frac{4}{2}$ ⇒ $2$

$(2,2)$

8 0

4 years ago

Dr. Black is standing 13 feet from the streetlamp. The lamp is making his shadow 9 feet long. He estimates that the angle of ele

Thepotemich [5.8K]

13 + 9 = 22 feet

the angle is 50 degrees

multiply 22 x tan(50) to find the height of the lamppost

22 x tan(50) = 26.21

so the lamppost is about 26 feet tall

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3 years ago

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What is 0.4 divided by 379?

zepelin [54]

Answer:

0.0010554

Step-by-step explanation:

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