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Semenov [28]
2 years ago
5

PLEASE HELP I HAVE 2 MORE THEN IM DONE OR TONIGHT (then i start again tmr ;( )

Mathematics
2 answers:
ipn [44]2 years ago
8 0

The number in the green box should be 9

9,17,32,44,45,45,48,48,53,53,55,69

ryzh [129]2 years ago
7 0

Answer:

1. 9

2. 32

3.

4. 69

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How many triangles can be constructed with sides measuring 1 m, 2 m, and 2 m?
abruzzese [7]
One.
Two sides are the same, the base is 1m.

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3 years ago
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The sum of two numbers is 53. if twice the first number minus three times the second number is 26, find both numbers.
EastWind [94]
Make an equation system based on the problem
eg. a is the first number and b is the seond number
An equation for "<span>The sum of two numbers is 53" is
</span>⇒ a + b = 53
An equation for "<span>twice the first number minus three times the second number is 26"
</span>⇒ 2a - 3b = 26
<span>
Solve the equations by elimination and subtitution method
Eliminate a to find the value of b
a + b = 53   (multiplied by 2)
2a - 3b = 26
--------------------------------------
2a + 2b = 106
2a -  3b = 26
------------------- - (substract)
       5b = 80
         b = 80/5
         b = 16

Subtitute the value of b to one of the equations
a + b = 53
a + 16 = 53
a = 53 - 16
a = 37

The numbers are 16 and 37</span>
6 0
3 years ago
In planning her retirement, Liza deposits some money at 2% interest, twice as much deposited at 2.5%. What is the amount deposit
harkovskaia [24]
She deposited two amounts, let's say "a" and "b"
"a" earning 2% interest
"b" earning 2.5% interest

the 2.5% one, is twice as much as the 2% one
so.. one can say that, whatever "a" is, "b" is twice as much,
or b = 2*a -> b = 2a

now.. .the sum of both earned interest, was $1190

so.. one can say that (2% of a) + (2.5% of b) = 1190
let' us use the decimal notation then
\frac{2}{100}a+\frac{2.5}{100}b=1190\implies 0.02a+0.025b=1190&#10;\\ \quad \\&#10;\textit{however, we know "b" is 2a thus}&#10;\\ \quad \\&#10;0.02a+0.025\boxed{b}=1190\implies 0.02a+0.025(\boxed{2a})=1190

solve for "a" to find what the "a" amount is,
to find "b", well, "b" is "2a", so just do a 2*a to get "b"

5 0
3 years ago
Which of the following is true about the bird population? Please!!!
ElenaW [278]

Answer:

D

Step-by-step explanation:

if something is multiplied by 1.025 it is increasing by 2.5 percent

5 0
3 years ago
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Four less than the sum of a number and 20 is 16. What is the number
Allushta [10]
[tex]4 - (x + 20 ) = 16

x=0
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3 years ago
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