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Strike441 [17]
3 years ago
6

Which of these equations

Mathematics
1 answer:
tresset_1 [31]3 years ago
4 0
It would be D I think
You might be interested in
Identify a, b and c in the quadratic equation.<br><br> -x2 + 31x + 7 = 0
Anna [14]

Answer:

a is -1

b is 31

c is 7

Step-by-step explanation:

-x^2+31x+1=0

ax^2+bx+c=0

4 0
3 years ago
You have three sticks, one red, one green, and one blue. 1. The red one is three times as long as the blue 2. The green one is 7
USPshnik [31]

Answer: red is 21, green is 14 and blue is 7

Step-by-step explanation:

Let r represent the length of the red stick.

Let g represent the length of the green stick.

Let b represent the length of the blue stick.

The red one is three times as long as the blue. This means that

r = 3b

The green one is 7 inches longer than the blue. This means that

g = b + 7

The blue and green together are the same length as the red. This means that

b + g = r

g = r - b

Therefore

b + 7 = r - b

r = b + b + 7 =2b + 7

Substituting r= 3b into r = 2b + 7, it becomes

3b = 2b + 7

3b - 2b = 7

b = 7

r = 3b = 3 × 7 = 21

g = b + 7 = 7 + 7 = 14

7 0
3 years ago
Can someone help me 10 points
Elanso [62]

The two angles form a right triangle which is 90 degrees.

Add the two to equal 90:

3x-8 + 4x = 90

simplify:

7x-8 = 90

Add 8 to both sides:

7x = 98

Divide both sides by 7:

x = 14

3 0
3 years ago
Choose what the expressions below best represent within the context of the word problem.
grin007 [14]

Answer:

The given expression "The sum of two consecutive odd integers equals 12." is written as 2x + 1 + 2x + 3 = 12  and numbers are 5 and 7

Step-by-step explanation:

 Given expression : The sum of two consecutive odd integers equals 12.

We have to write the given expression mathematically and solve.

Consider the given expression "The sum of two consecutive odd integers equals 12."

Consecutive odd integers are the odd integers having difference of two in between like 3, 5, 7 etc,

we know odd numbers are of the form of (2m+1)

Thus, let two consecutive odd integers be 2x+1 and 2x+3

Then given sum of  two consecutive odd integers  is 12

mathematically written as,

2x + 1 + 2x + 3 = 12

4x+ 4 = 12

x + 1 = 3

x = 2

Thus, consecutive odd integers are 2(2)+1 = 5

and 2(2) + 3 = 7

Thus, the given expression "The sum of two consecutive odd integers equals 12." is written as 2x + 1 + 2x + 3 = 12  and numbers are 5 and 7

8 0
3 years ago
Read 2 more answers
Is 6z-15 is greater than or less than 4z+11 solvable?
Alenkasestr [34]
6z -15  \geq  4z+11 \\\\ 6z-4z \geq  11+15 \\\\ 2z \geq 26 \ |:2 \\\\ z \geq  13 \\\\ \boxed{x=[13;\infty)}
6 0
4 years ago
Read 2 more answers
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