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lana [24]
3 years ago
13

Write a quadratic equation in standard form with the roots of 2 and -5. Assume a = 1.

Mathematics
1 answer:
trasher [3.6K]3 years ago
6 0

Answer:

x^2+3x-10

Step-by-step explanation:

If roots are 2 and -5, then the unexpanded form must be (x-2)(x+5). Expand using foil or preferred method to get answer.

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grandymaker [24]

Answer:

Step-by-step explanation:

Total pencils = 48

Total erasers = 72

If we put 1 pencil and 1.5 eraser in each pouch then total pouches = 48 pouches

3 0
2 years ago
There are 72 students in the marching band. The ratio of girls to boys is 19 to 17.
8090 [49]

Answer:

34 boys

Step-by-step explanation:

72 students

G-19:B-17 Ratio

19 + 17 = 36

72/36 = 2

19 x 2 = 38

38 girls

17 x 2 = 34

34 boys

4 0
3 years ago
If 120% is £360 what is 100%
AleksAgata [21]
In this question a vital information has been provided. This information can be used for determining the answer to the question that is asked. It is given that 120% of a certain number is 360 pound. The 100% value of the number needs to be determined.
Let us assume the number to be = x
Then
120x/100 = 360
12x/10 = 360
12x = 360 * 10
12x = 3600
x = 3600/12
   = 300
 Now we can say that the 100% of the number or the actual number is 300 pounds. I hope the problem is clear to you and you can understand the trick involved in the question.
6 0
3 years ago
Susanna walked 2/7 of a mile in two over five of an hour what is a unit rate in miles per hour
Aleks [24]

Answer:

speed = distance/ time so:

(2/7) / (2/5) = (2/7) x (5/2) = 10/14 = 5/7 mph

5/7 = 0.71 miles per hour if you need decimal formatStep-by-step explanation:

8 0
2 years ago
Read 2 more answers
Simplify the expression: -2.3f+0.8f - 12-5
MaRussiya [10]

Answer:

-1.5f - 17

Step-by-step explanation:

-2.3f + 0.8f - 12 - 5

= -1.5f - 17

8 0
3 years ago
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