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velikii [3]
3 years ago
15

2. Bryan and Lori were each given the same pair of numbers. Bryan's description of the two numbers was: The larger number is 3 m

ore than three times the smaller number, s. Lori's description of the two numbers was: Five times the smaller number decreased by 7 is the larger number. Which equation represents this situation?
Mathematics
1 answer:
sleet_krkn [62]3 years ago
6 0

Answer:

5 and 18

Step-by-step explanation:

The two numbers according to Bryan are x and 3x+3. According to Lori they are x and 5x-7. So we know that x+3x+3=x+5x-7. x and x cancel out. 3 and 7 add to 10. 5x-3x=2x. So 2x=10. X=5 and the other number is 18.

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Answers plssssssssssssssssss
Natali [406]

Answer:

3/2

Step-by-step explanation:

if u divide two fractions, it is same as multiplying with its reciprocal

3 0
3 years ago
What are the possible values of x if (4c-5)^2= 49?
kykrilka [37]

Answer:

c = 3                              c = -1/2

Step-by-step explanation:

(4c-5)^2= 49

Take the square root of each side

sqrt((4c-5)^2)= ±qrt(49)

4c-5 = ±7

Separate into two equations

4c-5 = 7           4c-5 = -7

Add 5 to each side

4c-5+5 = 7+5          4c-5+5 =-7+5

4c =12                         4c = -2

Divide by 4

4c/4 = 12/4                     4c/4 = -2/4

c = 3                              c = -1/2

7 0
3 years ago
Read 2 more answers
Solve for k pls ! <br> extra letters for the question: whfjndnfnfn
makvit [3.9K]

Answer:

k=5

Step-by-step explanation:

hope this was helpful!! c:

8 0
3 years ago
A group of 570 students were surveyed about the courses they were taking at their college with the following results:
garri49 [273]

Answer:

The number of students who took English and History, but not Math is 143.

Step-by-step explanation:

Denote the subject choices as follows:

<em>M</em> = a students was taking Math

<em>E</em> = a students was taking English

<em>H</em> = a students was taking History

The data provided is as follows:

N (M) = 257

N (E) = 282

N (H) = 323

n (M ∩ E) = 154

n (M ∩ H) = 171

n (E ∩ H) = 143

n (M ∩ E ∩ H) = 80

Consider the Venn diagram below.

From the provided data and the Venn diagram the value of the set E and H minus M is 143.

Thus, the number of students who took English and History, but not Math is 143.

7 0
3 years ago
Let sin(47o)=0.7314 . Enter an angle measure (β ), in degrees, for cos(β)=0.7314
amid [387]
Sinx = cosb => x + b = 90 <=> b = 90 - 47 = 43o
8 0
3 years ago
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