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asambeis [7]
3 years ago
10

Simplify as far as possible. 7 √ 5 − 3 √ 5

Mathematics
1 answer:
ElenaW [278]3 years ago
3 0

Answer:

4 sqrt(5)

Step-by-step explanation:

7 sqrt(5) - 3 sqrt(5)

These are like terms so we can subtract

4 sqrt(5)

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Which two ratios form a proportions? question 1 options: 1 2 and 42
a_sh-v [17]

Answer:

42/2

Step-by-step explanation:

I am not sure if this is correct but i tried my best and this is what i got

7 0
3 years ago
First: Four more than the product of a number and three
miss Akunina [59]
4+3x
2x-5
2(8+x)

2x-5=4+3x
-x-5=4
-x=9
x=-9
3 0
4 years ago
75 + 50x = 25 + 70x<br><br> a, 5<br> b, 5/6<br> c, 2<br> d, 2.5
Stells [14]

Answer:

D

Step-by-step explanation:

Let's solve your equation step-by-step.

75+50x=25+70x

Step 1: Simplify both sides of the equation.

50x+75=70x+25

Step 2: Subtract 70x from both sides.

50x+75−70x=70x+25−70x

−20x+75=25

Step 3: Subtract 75 from both sides.

−20x+75−75=25−75

−20x=−50

Step 4: Divide both sides by -20.

−20x

−20

=

−50

−20

x=  5/2

5 0
3 years ago
Gardener has 780 plants. He wants to plant there in such a way that the number of rows and the numbers of columns remains same.
AleksAgata [21]

Answer:

<em>Gardener will need 4 more plants.</em>

Step-by-step explanation:

Gardener has 780 plants and wants to plant them in an array of n rows and n columns.

The number of plants needed to do that is:

n*n=n^2

He actually has 780 plants, thus it should occur:

n^2=780

Taking the square root:

n=27.9

Since n needs to be an integer, we round up n to get

n=28

But 28^2=784, 4 more than the actual number of plants, thus:

Gardener will need 4 more plants.

Note: There are other possible results for n. If we set n=29, then n^2=841 and Gardener would need 841-780=61 more plants, but the question asked for the minimum number of plants.

5 0
3 years ago
suppose the annual rate of inflation is about 4% this means that the cost of an item increases by about 4%. write and evaluate a
Mashcka [7]
Cost = (3,500) * (1.04)^years
Cost = (3,500) * (1.04)^4
<span><span><span>Cost = (3,500) * 1.16985856 </span> </span> </span>
<span><span>Cost = </span>4,094.50</span>



4 0
3 years ago
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