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2 years ago

How to factorise 7x+7 and x²+2x i need help bad

1 answer:

6 0

There is a 7 in both 7x and 7 so you will take that out.

7 (x+1)

Then there is an x in both x2 and 2x so you take that out.

x (x+2)

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A submarine patrolling the Indian Ocean was situated 800 feet below sea level. If it ascends 275 feet, what is its new position

Delicious77 [7]

Answer:

-525 feet

Step-by-step explanation:

If a submarine was below sea level, that would mean that it would be at an elevation of negative feet down, so if it's 800 feet below sea level, it's elevation would be -800.

to ascend means to rise, so the submarine would be moving +275 feet (going higher, closer to sea level)

so you can make out this equation: -800 + 275

this would equal: -525

6 0

2 years ago

Find the percent. 3 is what percent of 8?

shepuryov [24]

Answer:

37.5

Step-by-step explanation:

3/8

3 divided by 8= .0375

.0375 times 100= 37.5

5 0

2 years ago

There are 7 terms in a finite arithmetic sequence, and the first term is 11.

jonny [76]

I say the answer is d I might be wrong.

4 0

3 years ago

Can someone tell me what x equals!

Zinaida [17]

Answer:

Step-by-step explanation:

hope u find this helpfull

5 0

2 years ago

Read 2 more answers

Find the Perimeter & Area for the following circle.

Feliz [49]

Answer:

A = 28.3 cubic inches; P = 20.1 inches

Step-by-step explanation:

Looks like 3/4 of a full circle

The area of a circle is calculated with the formula: $\pi r^{2}$

Since the problem wants pi = 3.14, we use 3.14 instead of pi in the equation.

The radius is given as 3 inches

Area = $3.14*3^{2} = 3.14*9 = 28.26$ cubic inches = 28.3 cubic inches

------------------------

Perimeter is calculated with $2\pi r$ .

But this is 3/4 of a circle with an additional two 3-inch sides

Perimeter = $\frac{3}{4}*2\pi r$ + 2(3) = 14.1 + 6 = 20.1 inches

6 0

2 years ago

Read 2 more answers