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geniusboy [140]
3 years ago
13

At midnight the temperature in a garden was -2 °C.

Mathematics
2 answers:
Firdavs [7]3 years ago
8 0

Answer:

-2°c + 9°c = 7°c

Step-by-step explanation:

..............

WITCHER [35]3 years ago
7 0
7 degrees celcious

-2+9= 7
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How to solve and what is the answer
TiliK225 [7]
Two ways: 
1) guess factors(trial and error)
2) use quadratic formula.
If you use this method then a = -3, b = -6 and c = -1


x = -b +/- [sqrt(b^2 -4ac)/2a]
substituting a, b, and c into our equation we get:
x = - (-6)+/- [sqrt ((-6)^2) - 4(-3)(-1))/2 (-3)]
x = + 6 +/- [sqrt (36 -4 (3)/-6)]  if I didnt make a mistake in my signs
x = + 6 +/- [sqrt (36 -12)/-6)]
x = 6 +/- [sqrt (24)/-6]  but sqrt 6 x sqrt of 4 = sqrt 24 hence
x = 6 +/-  [ sqrt 6 x sqrt 4 /-6] that is:
x = 6 +/- [sqrt 6 x 2 /-6 ]
so x = 6 + [sqrt 6 x 2/-6] and x = 6 - [sqrt 6 x 2/-6]

7 0
3 years ago
PLEASE HELP ASAP MARK AS BRAINLIEST
MatroZZZ [7]
Sence it is growing you are ganna want to start at 0 from where it begins as a sapling and then go right because it is adding on to how tall it is
4 0
3 years ago
PLzzz help this is due in 20mins. The standard recipe for Hershey's chocolate is 3 cups cocoa and 2 cups milk. If Hershey's deci
klio [65]

Answer: 60 cups of cocoa and 40 cups of milk I believe

Step-by-step explanation:

times 3 cups of cocoa by 20

times 2 cups of milk by 20

7 0
3 years ago
Read 2 more answers
13.
liubo4ka [24]

Answer:

6x +4 where x is amount for standard call

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
In the past, the average age of employees of a large corporation has been 40 years. Recently, the company has been hiring older
earnstyle [38]

Answer:

Step-by-step explanation:

In the past, mean of age of employees

i.e. \mu = 40

Recently sample was taken

n = sample size = 60

Mean of sample = 45

Std dev of sample s = 16

H_0: \bar x = 40\\H_a: \bar x >40

(Right tailed test)

Since only population std deviation is known we can use t test only

Std error = \frac{s}{\sqrt{n} } \\=\frac{16}{\sqrt{61} } \\=2.049

Mean difference = 45-40 =5

Test statistic t=\frac{5}{2.049} \\=2.441

df = 60

p value =0.008739

Since p < 0.05 we reject null hypothesis

The mean age has increased.

5 0
3 years ago
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