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vovikov84 [41]
3 years ago
13

Help me plssssss i don’t know how to do this

Mathematics
1 answer:
makkiz [27]3 years ago
7 0

Answer:

AC = \sqrt{15}

Step-by-step explanation:

Assuming you require AC

Using Pythagoras' identity in the right triangle

The square on the hypotenuse is equal to the sum of the squares on the other 2 sides , that is

AC² + BC²= AB²

AC² + 7² = 8²

AC² + 49 = 64 ( subtract 49 from both sides )

AC² = 15 ( take square root of both sides )

AC = \sqrt{15} ≈ 3.87 ( to 2 dec. places )

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Students sold books to the local library as a part of a school drive. paper books were brought for $1.45 each. The library spent
nalin [4]

Answer:

213 books

Step-by-step explanation:

Paper books = $1.45 each

$ 1.45 = 1 paper book

$ 1 = 1/1.45 paper book

$98.6 = 98.6/1.45 paper books

$ 98.6 = 68 paper books

Hardback books = $ 2.25 each

$2.25 = 1 Hardbook

$1 = 1/2.25 hardbook

$ 328.10 = 328.10/2.25 hardbooks

$ 328.10 = 145.822 hard books

Number of books cannot be a decimal number, so the value has to be estimated to a nearer whole number.

$ 328.10 = 145 hard books

Total number of books bought = (145 + 68)books= 213 books (Answer)

4 0
3 years ago
Is 2.346982105 an irracional number?
natima [27]

Answer:

Step-by-step explanation:

Yes. because In mathematics, the irrational numbers are all the real numbers which are not rational numbers. That is, irrational numbers cannot be expressed as the ratio of two integers

3 0
3 years ago
Read 2 more answers
A gardener planted 5 rows of vegetables. Each row has 3 pepper plants and s squash plants. The garden contains a total of 20 pla
Natalija [7]
(5x3)(5xs)=20
Hope that helps
3 0
3 years ago
0) How many yards is 24 feet?
masha68 [24]

Answer:

8 yards

Step-by-step explanation:

1 foot = 0.33 yards

(0.33) x (24) = 8

therefore there are 8 yards in 24 feet

6 0
3 years ago
Pls help me I kinda don’t get it.
suter [353]
A). Pi m

Explanation:

Arc length formula:

Arc length = (Ø/360°) * 2*Pi*r
Ø = given angle (degrees)
r = radius

Plug given numbers in:

(45°/360°)* 2* Pi * 4
This will give you the answer of Pi
4 0
3 years ago
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