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Keith_Richards [23]
3 years ago
14

Sally Pays £25 for two tubes of paint a blue tube and a red tube. the blue tube cost £7 more than the red tube.

Mathematics
1 answer:
Lostsunrise [7]3 years ago
5 0
Let's say the price of the red tube is x, and the price of the blue tube is x + 7. Then the total cost 25 is the price of the red tube plus that of the blue tube, or x + x + 7.

2x+7=25  \\ 2x =18  \\ x=9

The red tube cost £9, and the blue tube cost <span>£16.</span>
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How to solve x(x-3)=0
damaskus [11]

Step-by-step explanation:

x(x-3)=0

x=0 or (x-3) =0

x= 0 or x =3

7 0
3 years ago
Find a polynomial with a degree of 3, and the zeros 1,7, &amp; -4 with no other zeros.
jarptica [38.1K]

Answer:

f(x)=(x+4)(x-7)(x-1)

Step-by-step explanation:

zeroes are when you plug in that x value and get y=0

therefore if you set x = that number and solve for 0 you get a "function"

multiplying these together will yield the complete 3rd degree polynomial

x = 1

x-1=0

x=7

x-7=0

x=-4

x+4=0

f(x)=(x+4)(x-7)(x-1)

If needed you could expand but I'm too lazy

5 0
2 years ago
Scientists found the wreck of the titanic 3,797 m below sea level. How many km below sea level is the wreak ?
astraxan [27]

We are given that the titanic is found 3,797 m below sea level. This is simply equivalent to 3.797 km or 3.8 km when rounded off to one decimal.

We should take note that the letter k in km means kilo and a kilo is equivalent to 1000. So this means that for 1 km there is exactly 1000 m. So to convert, simply multiply a value with unit m with this conversion factor. Conversion factor = 1 km / 1000 m

Depth of titanic = 3,797 m (1 km / 1000 m)

<span>Depth of titanic = 3.797 km = 3.8 km</span>

4 0
3 years ago
The test scores of students in a math class are 56, 42, 50, 63, 58, 41, 50, 48, 68, and 48. What is the mean of this set of data
docker41 [41]
To find the mean, add up all the test scores and divide by the number of tests:
524/10 = 52.4.
8 0
3 years ago
Is this a function or not?
Hoochie [10]

Answer:

ummm it think so

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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