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2 years ago

There are two questions there. Feel free to just answer one. I’m stuck on these last two.

Mathematics

2 answers:

LenaWriter [7]2 years ago

7 0

Answer:

Someone already answered so you mine will be useless, anyway have a nice day :D

Step-by-step explanation:

arlik [135]2 years ago

3 0

Answer:

7. option D

8. option D

Step-by-step explanation:

7. we can assume the height of the radio tower to be x. We're given with its shadow,the height of the person and also their shadow. Since we have 3 known values and an unknown, we can make a proportion comparing the tower's height to the height of the person.

∴ 6/10 = x/ 400

⇒ x= (6 * 400)/10 = 240 feet.

8. The question is similar to the above question where again we have 3 knowns and one unknown. Let us assume the length to be x. We'll again compare the length of the two photographs and make it as a proportion.

∴ 4/6 = x/10

⇒ x = (4 * 10)/6 = 6.7 in

Hope that answers your questions!

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Express the solution of, x^3 + 2x^2 < x + 2, using interval notation.

Rudiy27

x³ + 2x² - x - 2 < 0

x³ - x + 2x² - 2 < 0

x(x² - 1) - 2(x² - 1) < 0

(x - 2)(x² - 1) < 0

(x - 2)(x - 1)(x + 1) < 0

by chacking we get the solution

x ∈ (-∞,-1) ∪ (-1,1)

6 0

2 years ago

Will AWARD BRAINIEST!!!!! 20 POINTS

Vesna [10]

Answer:

Step-by-step explanation:

The 3 by 2 rectangle is 6 so 15-6=9

3 x (x-2) x 0.5 = 9

3 x (6-2=4) 4 = 12 / 2 = 6

5 0

2 years ago

Tom had a total of $220 and he spent $35 on a basketball ticket . What percent of his money did he have left?

RoseWind [281]

Answer: 84.09%

Step-by-step explanation:

1. 220-30=? ?=185

2. Divide 185 by 220 (as a fraction, 185 out of 220 is 185/220 which also means divide) 185 divided by 220 is about 0.8409

3. Multiply 0.8409 by 100 (since there is two zeros in 100 we can move the decimal to the right twice which gets you 84.09

8 0

2 years ago

Choose the midpoint of the line segment with endpoints at (5, 9) and (11, 15).

Tcecarenko [31]

Answer:

C) (8,12)

Step-by-step explanation:

$MP= (\frac{x_1+x_2}{2} )(\frac{y_1+y_2}{2} )\\MP= (\frac{5+11}{2} )(\frac{9+15}{2} )\\MP= (\frac{16}{2} )(\frac{24}{2} )\\MP= (8,12)$

8 0

2 years ago

5/6 – 6/12<br><br>I am lost bc I'm not a math person so pls help me?

vovangra [49]

First, we must find the common denominator (12) ✵

10/12-6/12 ✵ ✵ ✵ ✵

Now, why 10? ✵ ✵ ✵

Because we CAN'T just take the denominator and change it; we must change both the denominator AND the numerator:

✵ • - ○

4/12 ✧ ✩ ✶ ✺ ✱

We can simplify, or reduce, this fraction: ✱ ✱

1/3 ✩ ✦ ✤

I hope it helps!

$*VirtuosoTeen*$

7 0

2 years ago

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