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3 years ago

PLEASE HELP ASAP its in the attachment lol

Mathematics

1 answer:

Advocard [28]3 years ago

8 0

Answer: c. 66

Step-by-step explanation:

Add 76 and 38.

76+38 = 114

Take 180 minus 114

180-114 = 66

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kelly rode her bicycle for 35 minutes at a speed of 12 miles per hour at that speed , how many miles did she ride

Hatshy [7]

35/60 x 12=7 miles
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4 0

4 years ago

I need help with 10-12

makkiz [27]

Answer:

Step-by-step explanation:

10) Triangle ABC is similar to triangle EDC. This means that

AB/ED = BC/DC = AC/EC

Therefore,

(3x - 5)/32 = (5x - 5)/56

Cross multiplying, it becomes

56(3x - 5) = 32(5x - 5)

168x - 280 = 160x - 160

168x - 160x = 280 - 160

8x = 120

x = 120/8 = 15

11) Triangle JKL is similar to triangle triangle MKN. This means that

JK/MK = KL/KN = JL/MN. Therefore,

32/12 = (3x - 2)/(x + 1)

Cross multiplying, it becomes

32(x + 1) = 12(3x - 2)

32x + 32 = 36x - 24

36x - 32x = 32 + 24

4x = 56

x = 56/4 = 14

12) Triangle BCD is similar to triangle GEF. This means that

BC/GE = CD/EF = BD/GF. Therefore,

(x + 4)/51 = (2x - 7)/57

Cross multiplying, it becomes

57(x + 4) = 51(2x - 7)

57x + 228 = 102x - 357

102x - 57x = 228 + 357

45x = 585

x = 585/45 = 13

7 0

4 years ago

D. Solve the following problems:

hodyreva [135]

Step-by-step explanation:

100 = 12

300 + 50 = 36 + 6 = 42 L

3 0

3 years ago

You are running a concession stand selling hot dogs and sodas. Each hot dog costs $2 and each soda costs $1. At the end of the n

amm1812

Answer:

see the explanation

The number of hot dogs that were sold is 15 and the the number of sodas that were sold is 75

Step-by-step explanation:

Let

x ---> the number of hot dogs that were sold

y ---> is the number of sodas that were sold

we know that

You sold a total of 90 hot dogs and sodas combined

$x+y=90$ ----> equation A

You made a total of $105

$2x+y=105$

isolate the variable y

$y=105-2x$ ----> equation B

substitute equation B in equation A

$x+(105-2x)=90$

solve for x

$x=105-90\\x=15$

Find the value of y (equation B)

$y=105-2(15)=75$

therefore

The number of hot dogs that were sold is 15 and the the number of sodas that were sold is 75

4 0

3 years ago

Customers are used to evaluate preliminary product designs. In the past, 95% of highly successful products received good reviews

Andrej [43]

Answer: The required probability is 0.615.

Step-by-step explanation:

Let A be the event that a product receives good reviews.

Let E₁ be the event that the product is highly successful.

Let E₂ be the event that the product is moderately successful.

Let E₃ be the event that the product is poor.

$P(E_1)=0.40\\\\P(E_2)=0.35\\\\P(E_3)=0.25\\\\P(A|E_1)=0.95\\\\P(A|E_2)=0.60\\\\P(A|E_3)=0.10$

(a) What is the probability that a product attains a good review.

So, it becomes,

$P(A)=P(E_1)P(A|E_1)+P(E_2)P(A|E_2)+P(E_3)P(A|E_3)\\\\P(A)=0.4\times 0.95+0.0.35\times 0.6+0.25\times 0.1\\\\P(A)=0.615$

Hence, the required probability is 0.615.

4 0

3 years ago