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Viktor [21]
3 years ago
9

Can someone please help me

Mathematics
1 answer:
aalyn [17]3 years ago
6 0
The length of x would be 5.6. (:
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What is the value of x in the following equation? <br> y=3x-5 <br> 6x+3y=15
tatiyna
The value of x is 2. because you rule out y so it is 6times2is 12+3. that is 15

8 0
3 years ago
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What’s the value of x? and what’s the measure of angel JHK?
enot [183]

Answer:

x = 14

JHK =  21

Step-by-step explanation:

The angles are vertical angles and vertical angles are equal

3x-21 = x+7

Subtract x from each side

3x-x -21 = x+7-x

2x-21 = 7

Add 21 to each side

2x-21+21 = 7+21

2x = 28

Divide by 2

2x/2 =28/2

x = 14

JHK = 3x-21 = 3(14) -21 = 42-21 = 21

3 0
2 years ago
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The 400ths power of number is 9^1000 what is the number
chubhunter [2.5K]
\bf (9^{1000})^{400}\implies 9^{1000\cdot 400}\implies 9^{400000}
4 0
3 years ago
In 1990, there were 4,500 deaths due to lung diseases in miners aged 20 to 64 years. The expected number of deaths in this occup
DIA [1.3K]

Answer:

2.5

Step-by-step explanation:

We have that the standardized mortality ratio (SMR) is the relationship between the number of deaths observed in a year, that is, those that occurred and the number of expected deaths, that is, those that were predicted.

SMR = observed / expected

therefore if we replace we have:

SMR = 4500/1800

SMR = 2.5

Which means that the standardized mortality ratio (SMR) is 2.5

7 0
3 years ago
What is 7(n+4)=21 ?
navik [9.2K]

Answer:

n=-1

Step-by-step explanation:

7n + 28 = 21

subtract 28 on both sides

7n= -7

divide by seven on both sides

n= -1

8 0
3 years ago
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