3 years ago

Use the data thing to answer all the questions plz

Mathematics

1 answer:

KonstantinChe [14]3 years ago

5 0

Where is the data chart to answer the questions?

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What is the length of AD if A is located at (-7,0) and D is located at (8,0)?

Kryger [21]

Answer:

Step-by-step explanation:

(-7,0) and (8,0) are on the opposite side of origin of x axis

d = 8 - -7 = 15

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2 years ago

In order to determine if engine oil EEEA B C will improve gas mileage, a research study was conducted. From a wide range of vehi

Georgia [21]

Answer:

b. Engine oil E will cause a significant improvement is gas mileage.

Step-by-step explanation:

The research was conducted with the random vehicles who were introduced with Engine oil E. When compared with engine oil E and the generic oil the vehicle that uses engine oil E performed better. The gas mileage of such vehicles improved significantly as compared to other vehicles who received generic oil.

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2 years ago

How many solutions does the following equation have? ln(x2 + 4x − 5) = 0

lisov135 [29]

Alrighty
remember
$log_a(b)=c$ means $a^c=b$
and
$ln(x)=log_e(x)$
and
$x^0=1$ for all real values of x
so

$ln(x^2+4x-5)=0$ means
$log_e(x^2+4x-5)=0$ means
$e^0=x^2+4x-5$ which simplifies to
1=x²+4x-5
minus 1 both sides
0=x²+4x-6
use quadratic formula or complete the square
$x=-2+\sqrt{10}$ and $x=-2-\sqrt{10}$
2 solutions

7 0

3 years ago

Please help i don’t understand this

avanturin [10]

Answer:

Step-by-step explanation:

The solution is in the attached file