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vodka [1.7K]
2 years ago
10

For every pound a company spends on advertising, it spends 43 pence

Mathematics
1 answer:
irakobra [83]2 years ago
8 0

Answer:

20:9

Step-by-step explanation:

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If the measure of angle 1 is 110 degrees and the measure of angle 3 is (2 x + 10) degrees, what is the value of x?
user100 [1]

Answer:

Correct option is

B

90

∘

,90

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,90

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Let AB and CD be two lines Intersecting at O, such that, ∠AOD=90

∘

Now, ∠AOD=∠COB=90

∘

(Vertically opposite angles)

⟹∠AOD+∠DOB=180

o

(Angles on a straight line)

⟹90+∠DOB=180

o

∠DOB=90

∘

∠DOB=∠AOC=90

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(Vertically opposite angles)

Thus, all angles are 90

∘

.

7 0
2 years ago
What is the domain of {(1,0),(-5,7),(-4,-7),(-7,-4)}
olasank [31]
D(1,-5,-4,-7) R(0,7,-7,-4) Domain are your x values and range is your y values
7 0
3 years ago
A restaurant has 60 plates.One night, 9 groups of 6 people ate dinner at the restaurant at the same time.How many plates were no
SSSSS [86.1K]
6 plates were not used

9*6=54
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8 0
3 years ago
Read 2 more answers
A demographer wants to measure life expectancy in countries 1 and 2. Let μ1 and μ2 denote the mean life expectancy in countries
Art [367]

Answer:

For this case we want to test if life expectancy in country 1 is more than 10 years lower than in country 2, (alternatibe hypothesis), so then the system of hypothesis are:

Null hypothesis: \mu_1 \leq \mu_2 -10

Alternative hypothesis:\mu_1 > \mu_2 -10

Or equivalently:

Null hypothesis: \mu_1 - \mu_2 \leq 10

Alternative hypothesis:\mu_1 - \mu_2 >10

Step-by-step explanation:

Previous concepts

A hypothesis is defined as "a speculation or theory based on insufficient evidence that lends itself to further testing and experimentation. With further testing, a hypothesis can usually be proven true or false".  

The null hypothesis is defined as "a hypothesis that says there is no statistical significance between the two variables in the hypothesis. It is the hypothesis that the researcher is trying to disprove".

The alternative hypothesis is "just the inverse, or opposite, of the null hypothesis. It is the hypothesis that researcher is trying to prove".

Solution to the problem

For this case we want to test if life expectancy in country 1 is more than 10 years lower than in country 2, (alternatibe hypothesis), so then the system of hypothesis are:

Null hypothesis: \mu_1 \leq \mu_2 -10

Alternative hypothesis:\mu_1 > \mu_2 -10

Or equivalently:

Null hypothesis: \mu_1 - \mu_2 \leq 10

Alternative hypothesis:\mu_1 - \mu_2 >10

7 0
3 years ago
Graph x<2 . Please help this is URGENT i could flunk the 9th grade. I need the correct answer i will give 100 POINTS.
s344n2d4d5 [400]

Answer:

Bottom left

< means that it's dashed line

7 0
3 years ago
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