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3 years ago

Select the correct answer. What is the value of x? log^2(x+ 7) = 2

Mathematics

1 answer:

Delvig [45]3 years ago

3 0

Answer: x=-3

Solve the equation by rewriting in exponential form using the definition of a logarithm and simplifying.

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Cindy pics six times as many apples as Mary John pick eight times as many apples as Mary together they picked 135 apples how man

spin [16.1K]

Answer:

126 apples

Step-by-step explanation:

Let the number of apples picked by Mary=m

Cindy picks 6 times as many as Mary= 6Xm=6m

John picks 8 times as many as Mary= 8Xm=8m

Altogether they picked a total of 135 apples.

m+6m+8m=135

15m=135

m=135/15

m=9

We want to determine how many apples John and Cindy Picked.

John Picked 6m apples

Cindy Picked 8m apples

Their combined total= 6m+8m =14m

Since m=9

14m =14 X9 =126 apples

John and Cindy picked a total of 126 apples

3 0

3 years ago

What is the area of a triangle with base of 20 feet and a vertical height

VashaNatasha [74]

Answer:

A = 400 ft²

Step-by-step explanation:

The area (A) of a triangle is calculated as

A = $\frac{1}{2}$ bh ( b is the base and h the vertical height ) , then

A = $\frac{1}{2}$ × 20 × 40 = 10 × 40 = 400 ft²

8 0

3 years ago

Is 2 /10 = 20/200? Why?

rosijanka [135]

Go to the Internet and search it because i don’t know sorry

3 0

4 years ago

How do I prove that (1+sinx)/cosx=cos(-x)/(1+sine(-x))

stira [4]

$\dfrac{1+\sin x}{\cos x}=\dfrac{\cos (-x)}{1+\sin(-x)}\\
\dfrac{1+\sin x}{\cos x}=\dfrac{\cos x}{1-\sin x}\\
\cos^2 x=(1+\sin x)(1-\sin x)\\
\cos^2 x=1-\sin^2 x\\
\sin^2 x+\cos^2 x=1
$

5 0

4 years ago

I need to know what the answer is for number 127

FromTheMoon [43]

Yes because of the positive association it holds. I’m not sure if this is actually true or not but if there’s a correlation between them then yes

5 0

4 years ago