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valentinak56 [21]
2 years ago
7

What is the solution to y=-x-6 and y=x-4

Mathematics
1 answer:
xz_007 [3.2K]2 years ago
7 0

Answer:

(-1,-5)

Step-by-step explanation:

Solve by substitution

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Help please!!!!!!!!!!
enyata [817]

Set up a ratio

3/7 = 6/n

Then cross multiply

3n = 42

n = 14

7 0
3 years ago
F=9/5(k-273.15)+32 what is F?
Delvig [45]
I believe you convert from Kelvin to Degree Fahrenheit
Kelvin is 293 so
F=9/5 (293-273.15)+32
F=9x5 (19.85)+32
F=45-19.85+32
F=57.15
5 0
3 years ago
How to find volume,lateral area and total area?
AlexFokin [52]

lateral area is the faces not the bases,total area is the area if the whole shape and volume changes on what type of figure it is

4 0
3 years ago
A simple random sample was taken of 44 water bottles from a bottling plant’s warehouse. The dissolved oxygen content (in mg/L) w
Margarita [4]

Answer:

(a) Test statistic is -2.85 and p-value is 0.0022

(b) Reject the null hypothesis. The population mean of dissolved oxygen content is not equal to 10 mg/L

Step-by-step explanation:

H0: mu equals 10

Ha: mu not equals 10

The test is a two-tailed test because the alternate hypothesis is expressed using not equal to

(a) Test statistic (z) = (sample mean - population mean) ÷ (sd/√n) = (9.14 - 10) ÷ (2/√44) = -0.86 ÷ 0.302 = -2.85

Cumulative area of the test statistic = 0.9978

p-value = 2(1 - 0.9978) = 2(0.0022) = 0.0044

(b) The critical value using 0.02 significance level is 2.422. For a two-tailed test, the region of no rejection of the test statistic lies between -2.422 and 2.422.

Conclusion:

Reject the null hypothesis because the test statistic -2.85 falls outside the region bounded by the critical values -2.422 and 2.422.

The population mean of dissolved oxygen content is not equal to 10 mg/L

7 0
3 years ago
if the working age population is 250 million,170 million are unemployed and 9 million are unemployed, the unemployment rate is
Amiraneli [1.4K]

Answer: 5%

Step-by-step explanation:

9/179

4 0
3 years ago
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