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Sladkaya [172]
3 years ago
11

ANSWER THIS PLS I HAVE 2 MINUTES!!

Mathematics
1 answer:
Ksju [112]3 years ago
6 0

Answer: [-7;7]

- 7 ≤ x ≤ 7

Step-by-step explanation:

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Molodets [167]

Answer:

(0,3)

Step-by-step explanation:

7 0
3 years ago
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Reyna runs a textile company that manufactures T-shirts. The profit, p, made by the company is modeled by the function
Mkey [24]

The question is incomplete:

Reyna runs a textile company that manufactures T-shirts. The profit, p, made by the company is modeled by the function p = s^2+9s-142, where s is the number of T-shirts sold. How many T-shirts should be sold to earn a profit of more than $2,000?

Answer:

s>42

Reyna needs to sell more than 42 T-shirts.

Step-by-step explanation:

Given that you have to find the amount of T-shirts that should be sold to earn a profit of more than $2,000, you have to find the amount required to earn $2,000 by replacing p with 2,000 and solving for s:

s^2+9s-142=2000

s^2+9s-2142=0

(s+\frac{9}{2})^2-2142-(\frac{9}{2})^2=0

(s+\frac{9}{2})^2=2142+(\frac{9}{2})^2

(s+\frac{9}{2})^2=2142+\frac{81}{4}

(s+\frac{9}{2})^2=\frac{8649}{4}

\sqrt{(s+\frac{9}{2})^2 } =\sqrt{\frac{8649}{4} }

s+\frac{9}{2}=\frac{93}{2}

s=\frac{93}{2}- \frac{9}{2}

s=\frac{186-18}{4}

s=\frac{168}{4}

s=42

According to this, Reyna needs to sell more than 42 T-shirts to earn a profit of more than $2,000.

8 0
3 years ago
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Can someone help me these 2 questions? PLS and ty!
adelina 88 [10]

Answer:

y=60° b=60°

Step-by-step explanation:

the sum of all degrees of interior triangle is 180

in the first one, 30° and 90° have been given.(that small square represent 90°)

so 180°-90°-30°=60°

in the second one, the 120° is on the other side of a line, a line has a degree of 180, therefore the interior angle is 60°, the same rule 180°-2*60°=60°

5 0
3 years ago
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How do I solve these 3 equations ?
Arlecino [84]

Step-by-step explanation:

  • blue one ====> 3x+16 =9x+4 ( alternate angles)

>9x-3x=16-4

>6x=12

>x=2.

  • white one ====> 10x-2=9x+5 (corresponding angle)

>10x-9x=5+2

>x=7.

  • green one ====>8x+10=6x+30(vertically opposite angle)

>8x-6x=30-10

>2x=20

>x=10.

hope this helps you.

7 0
3 years ago
If f(x)=2x-5, find <br><br> a. f(4)<br> b. f(-3)
Vladimir [108]

Replace x in the given equation with each value:

a. f(4) = 2(4) -5

= 8-5

=3

b. (f-3) = 2(-3) - 5

= -6 -5

= -11

8 0
3 years ago
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