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tester [92]
4 years ago
12

Solve x2 + 2x =1 for x by completing the square.

Mathematics
1 answer:
Inga [223]4 years ago
5 0
The answer should be (x+1)^2 - 2
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Natalie's aunt gave her $47 to spend on clothes at the mall. She bought 4 shirts that cost $4 each and a pair of pants that cost
Murljashka [212]

Answer:$18

Step-by-step explanation:4 * 4 = $16. One pair of pants = $13. 16 + 13 = $29. 47 - 29 = $18

5 0
3 years ago
A soccer goal, as shows below, is composed of a pair of 8foot upright posts, positioned 48ft apart with a horizontal crossbar an
Talja [164]

Answer:

The distance from the ball to the left post is 50 feet.

Step-by-step explanation:

Since a soccer goal is composed of a pair of 8 ft upright posts, positioned 48ft apart with a horizontal crossbar and netting boxing in the goal, and a soccer ball is positioned directly in front of the right goal post at a distance of 14ft, to To determine what is the ground distance from the ball to the left goal post, the Pythagorean theorem must be applied through the following calculation:

A ^ 2 = B ^ 2 + C ^ 2

A ^ 2 = 14 ^ 2 + 48 ^ 2

A ^ 2 = 196 + 2,304

A = √2500

A = 50

Thus, the distance from the ball to the left post is 50 feet.

3 0
3 years ago
Michelle's credit card has a 1% introductory APR for 12 months and after that a 19.9% APR for purchases. Michelle makes purchase
WARRIOR [948]
There is a lot of unnecessary information here made to trip you up.

1% of $150 is $1,50.  If we add that to her purchase, we get $151.50

Provided she pays during the grace period, she should only have to pay $151.50 
6 0
4 years ago
Read 2 more answers
Ten times a number increased by 50​
muminat

Answer:

5 x 10

Step-by-step explanation:

Your saying 10 times a number is increased it by 50 so 10 x 5=50.

The final result will be 55 but the number was still increased 10 times it's value

You could also say it changed bu 50%

Hope it helps have a great afternoon:)

8 0
2 years ago
Write [equation in the the picture as a power of 3] the powers are n
skelet666 [1.2K]

Answer:

3^{2-n}

Step-by-step explanation:

Given expression in the picture is,

\frac{3^n}{9^{n-1}}

= \frac{3^n}{(3^2)^{n-1}}

= \frac{3^n}{3^{2(n-1)}}

= 3^n\times 3^{-2(n-1)} [Since, \frac{a^n}{a^m}=a^n\times a^{-m}]

= 3^{n-2(n-1)} [Since, a^m\times a^n=a^{m+n}]

= 3^{n-2n+2}

= 3^{2-n}

Therefore, answer is 3^{2-n}.

7 0
3 years ago
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