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Andreas93 [3]
4 years ago
14

Explain the mistake made

Mathematics
2 answers:
Liula [17]4 years ago
7 0

Answer:

step 2

Step-by-step explanation:

8x + 22 = 2x +42

8x - 2x +22 =42

6x + 22 = 42

6x = 42 -22

6x = 20

x = 20÷ 6

x = 10/3

Sladkaya [172]4 years ago
3 0

Answer:

The added both 8x+2x when they were suppose to subtract 8x-2x

Step-by-step explanation:

8x+22= 2x+42

6x= 42-22

6x= 20

x= 3.3 repeating

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(1) QS bisecting <PQR implies <PQS = <SQR

(2) <PQS=45 deg and (1) imply <SQR also = 45 deg

(3) from (2) it follows that <PQR = <PQS + <SQR = 45 + 45 deg = 90 deg and therefore the triangle is right-angled

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4 years ago
Mike spent $7920 on his vacation, which was 11% of his monthly salary. What was his monthly salary
leonid [27]

Answer: $72000

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  2. 720 times 100 = 72000

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Read 2 more answers
Uring lunch hour at a local restaurant, 90% of the customers order a meat entrée and 10% order a vegetarian entrée. Of the custo
Furkat [3]

Answer:

Total percent of customers who order a drink with their entrée = 76%

Step-by-step explanation:

Let

Total customers = 100%

customers who order a meat entrée = 90%

customers who order a vegetarian entrée = 10%

Of the customers who order a meat entrée, 80% order a drink

% of customers who order a meat entrée and drink = 80% of 90%

= (80/100 * 90/100) * 100

= (0.8 * 0.9) * 100

= 0.72 * 100

= 72%

% of customers who order a meat entrée and drink = 72%

Of the customers who order a vegetarian entrée, 40% order a drink.

% of customers who order a vegetarian entrée and drink = 40% of 10%

= (40/100 * 10/100) * 100

= (0.4 * 0.1) * 100

= 0.04 * 100

= 4%

% of customers who order a vegetarian entrée and drink = 4%

What is the percent of customers who order a drink with their entrée?

Total percent of customers who order a drink with their entrée = % of customers who order a meat entrée and drink + % of customers who order a vegetarian entrée and drink

= 72% + 4%

= 76%

Total percent of customers who order a drink with their entrée = 76%

3 0
3 years ago
(cos30°+sin60°)cot60°​
Gennadij [26K]

Answer:

1.

Step-by-step explanation:

cos 30  = √3/2                    (obtained from the 30-60-90 triangle)

sin 60 = √3/ 2                     ( as above)

cot 60 = 1 / tan 60  =  1/√3         (as above)

So (cos30°+sin60°)cot60°​ =   (√3/2 +  √3/2) / √3

= 2√3/2  / √3

= √3 / √3

= 1.

6 0
4 years ago
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