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Neko [114]
3 years ago
7

I will give u 5 stars for you answer and ill mark u brainilest if u tell me how to do it.

Mathematics
1 answer:
kolezko [41]3 years ago
3 0

Answer:

Erin ran 12.5 miles

Luis ran 7.5

In all they ran 20 miles.

Step-by-step explanation:

Erin: 5 x 3.5 = ?

Luis: 3 x 2.5 = ?

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

5 x 2.5 = 12.5 . Erin ran 12.5 miles

3 x 2.5 = 7.5 .  Luis ran 7.5 miles

7.5 + 12.5 = 20 miles

They ran 20 miles all together.

Hope this helps!

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Which expression is equal to – 8s – 2s2 + 23s – 4?
vovangra [49]

Answer:

15s-2s^2-4

Step-by-step explanation:

7 0
3 years ago
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If the perimeter of a right triangle is 42 units and the length of the hypotenuse is 20 units, find the length of the other two
Mashutka [201]
So
a^2+b^2=c^2
c=hypotenuse
a^2+b^2=20^2=400

if the permiter is 42 then
p=hypotonuse+side+side
42=20+side+side
subtract 20 from both sides
22=side+side

a+b=22
subtract b from both sides
a=22-b
subsitute for a in equation below
a+2+b^2=c^2
(22-b)^2+b^2=400
b^2-44x+484+b^2=400
2b^2-44x+484=400
divide both sides by 2
b^2-22x+242=200
subtract 200 from both sides
b^2-22x+42=0
factor
(b+/-number)(b+/-number)
to find the numbers, find which 2 number multiply to 42 and add to get -22
the numbers must be neative since same signs multiplied=positive and negative+negative=negative
(b-number)(b-number)
facrors of 42=2,3,6,7,14,21
2,21
3,14
6,7
it's hard to find the number, but the numbers are -19.8882 and -2.11181
(b-19.8882)(b-2.11181)=0
if xy=0 then assume that x and y=0

b-19.8882=0
add 19.8882 to both sides
b=19.8882

b-2.11181=0
add 2.11181 to both sides
b=2.11181



the side legnths are 19.8882 units and 2.11181 units
4 0
4 years ago
On January 1, 2020, Maris Enterprises issued 9%, 5-year bonds with a face amount of $800,000 at par. Interest is payable annuall
Anit [1.1K]

Answer:

A. Jan 1

Dr cash $800,000

Cr Bonds payable $800,000

B. Dr Interest expense $72,000

Cr Interest Payable $72,000

Step-by-step explanation:

Preparation of the entries to record the issuance of the bonds and the first annual interest accrual on December 31

A. Preparation of the entries to record the issuance of the bonds

Jan 1

Dr cash $800,000

Cr Bonds payable $800,000

(Being to record issuance of the bonds)

B. Preparation of the Journal entry to record first annual interest accrual on December 31

Dec 31

Dr Interest expense $72,000

Cr Interest Payable $72,000

($800,000*9%)

(Being to record the first year interest expense accrued)

6 0
3 years ago
HELP PLS<br><br> Graph: f(x) = 2(2)^x.
dexar [7]

Answer:

Some of the graph's coordinates are:

(-2, 1/2)

(-1, 1)

(0, 2)

(1, 4)

Step-by-step explanation:

7 0
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I need to know the square root answer of this problem simplified
Irina18 [472]
12 sqrt3 * 2 sqrt2 * 3

= 24 sqrt6 * 3

= 72 sqrt6  answer

4 0
4 years ago
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