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aleksley [76]
3 years ago
14

3/8 + (-7/8) = ???? brianliest

Mathematics
1 answer:
ser-zykov [4K]3 years ago
6 0

Answer:

-0.5

Step-by-step explanation:

just divide the numbers first then add them together

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-7 (-7)^-4 plz help plz
Natali5045456 [20]

Answer: -1/343

Step-by-step explanation:

-7(-7)^-4

First, re-write as positive exponents:

-7(-1/7^4)

Next, simplify:

-1/7^3 (you can simplify using exponent rules)

Simplify 7^3 :

7(7)(7)

49(7)

343.

Insert to original expression:

-1/343.

5 0
3 years ago
Gloria is digging for fossils at a geological’s site she has 120 m of rope in force gates to mark off a rectangular area which s
Ipatiy [6.2K]

Answer:

12 m x 10 m

Step-by-step explanation:

can you help me with my question In Paragraph 206 of "The Open Boat," Crane describes the shore the dinghy is approaching in naturalist terms as A welcoming B. indifferent C. treacherous

3 0
3 years ago
Read 2 more answers
What is the area of a sector with a central angle of (2pi/3) radians and a diameter of 12 in?
Stels [109]

Answer:

The area of the sector is 37.68\ in^{2}

Step-by-step explanation:

step 1

Find the area of the circle

The area of the circle is equal to

A=\pi r^{2}

we have

r=12/2=6\ in ----> the radius is half the diameter

substitute

A=(3.14)(6)^{2}

A=113.04\ in^{2}

step 2

Find the area of a sector with a central angle of (2pi/3)

Remember that

The area of 113.04\ in^{2} subtends a central angle of 2\pi \ radians

so

by proportion

Let

x----> the area of the sector

\frac{2\pi}{113.04}=\frac{(2\pi/3)}{x}\\ \\x=113.04*(2\pi/3)/(2\pi)\\ \\x=37.68\ in^{2}

8 0
3 years ago
It costs $20 a day to rent a car and $30 for a full tank of gas. If Stacy fills up the tank 3 times and has the car rented for 1
Nata [24]

Answer:

$20 × 14 days = $280

&30 × 3 = $90

&280 + $90 = $370

4 0
2 years ago
Read 2 more answers
Joe was walking to a grocery store at a speed of 50 feet in 9 seconds. at what speed was he walking in miles per hour
sashaice [31]

Answer:

3.79 miles per hour to the nearest hundredth.

Step-by-step explanation:

There are 3600 seconds in 1 hour.

50  feet in 9 seconds = 50/9 feet per second.

= (50/9) * 3600  feet  per hour

= (50/9) * 3600 / 5280 miles per hour.

= 50 * 400 / 5280

= 3.79 miles / hour.

4 0
3 years ago
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