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melamori03 [73]
2 years ago
15

What are the solutions to this quadratic equation? 5x^2-7-18=0

Mathematics
1 answer:
Helen [10]2 years ago
6 0

Answer:

x=±√5

Decimal form:

x=2.23606797

Step-by-step explanation:

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On a map, there are 3 inches between two cities. The actual distance between the cities is 18 miles. What was the scale used? Pl
stira [4]
Answer is 1 in=6 miles, answer A.
5 0
2 years ago
12/11k÷4/3k<br><br>simplify the fraction
Nonamiya [84]

Answer:

9/11

Step-by-step explanation:

12/11k÷4/3k

Copy dot flip

12/11k* 3k/4

36k / 44k

Divide the top and bottom by 4k

9/11

3 0
2 years ago
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Solve number problem 8
butalik [34]

Two consecutive odd integers have a difference of 2. If you let the smaller one of them be x, the other one is x + 2.

Their sum is -36, so add x and x + 2, and set equal to -36. Then solve for x to find the smaller one. Finally, 2 more than x is the greater of the two integers.

x + x + 2 = -36

2x + 2 = -36

2x = -38

x = -19

The smaller one of the two integers is -19.

x + 2 = -19 + 2 = -17

The greater of the two integers is -17.

Answer: The integers are -19 and -17.

4 0
3 years ago
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X +y=5, 3x-2y+5=0, this is the question​
Neko [114]

Step-by-step explanation:

x+y=5

3x-2y+5=0

3x-2y= -5

x+y=5...... equation 1

3x-2y= -5....... equation 2

there fore make x the subject of the formula in equation 1

x=5-y.. equation 3

substitute equation three in equation 2

3(5-y)-2y=-5

15y-3y-2y=-5

10y=-5

divide both sides by 10

y=-5/10

y=-½

substitute y into equation 1

x+(-½)=5

x=5+½

x=5½

x=5½,y= -½

4 0
2 years ago
A bag contains 3 red, 5 yellow, and 7 purple marbles. Find the probability of drawing a purple marble followed by a red marble.
jeka57 [31]

Answer:

unsimplified : \frac{21}{225} or simplified: \: \frac{7}{75}

Step-by-step explanation:

Work out : Look above at image.

3 0
3 years ago
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