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3 years ago

An equation is shown below: −2(4x − 1) − 7 = 5 Which statement shows a correct next step in solving the equation?

1 answer:

6 0

B. The equation can become −2(4x − 1) = 12 by applying the addition property of equality because we have: −2(4x − 1) − 7 = 5 / + 7 <=> -2(4x-1) = 12;

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What are the roots of the equation x^2+6x-9=0

Mila [183]

Answer:

x = approx. 1.24 or -7.24

Step-by-step explanation:

It's hard to factor directly so we should use the quadratic formula or complete the square. I'm going to go with completing the square.

x²+6x-9=0

x²+6x=9

x²+6x is the same as x²+2·3·x, in order to make this into the algebraic identity (A+B)²=A²+2AB+B², we must add B², or in this case 3² to both sides. (A is x, B is 3)

x²+6x+9=18

(x+3)²= 18

x+3= ±√18

x= ±4.24 -3 (approximately 4.24)

First solution for x = 4.24-3 = 1.24

Second solution for x = -4.24-3 = -7.24

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2 years ago

2. What is the overall purpose of photosynthesis?

mafiozo [28]

Answer:

plants getting there food is the basic use of photosynthesis

Step-by-step explanation:

6 0

2 years ago

Each serving of oatmeal is 8 ounces how many servings are in a 5 lb bag of oats

Anit [1.1K]

There are 16 ounces in 1 pound: 5*16=80
80 ounces divided by 8 ounces gives you 10 8 ounce servings

3 0

2 years ago

Read 2 more answers

What is the probability of tossing two coins in Irvington bus land on heads?

d1i1m1o1n [39]

Sample space = {TT, HH, TH, HT} where T is tail and H is head.
Number of outcomes = 4
The probability of getting two heads on tossing two coins
$= (\frac{1}{4} \times 100)\% \\ = 25\%$

Answer:

D) 25%

Hope you could understand.

If you have any query, feel free to ask.

6 0

1 year ago

Justin get to the basketball game at 7:35 pm and it last for 3 hours and 27 minutes. what is the time now

Nat2105 [25]

11:02

i don't know if im correct, sorry.

7 0

2 years ago