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3 years ago

Evaluate the expression when x=3 and y=-2

Mathematics

1 answer:

Kamila [148]3 years ago

7 0

-11 hope it helps and forgive me if im wrong

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Three farmers shared an order for fertiliser between them in the ratio 3:4:7.

Viktor [21]

Answer:

45 kg = Bethan's share

105 kg = Jade's share

Step-by-step explanation:

Let 3x = Bethan's share

4x = Noah's share

7x = Jade's share

Since Noah's share was 60, then 4x = 60

x = 15

3(15) = 45 kg = Bethan's share

7(15) = 105 kg = Jade's share

8 0

3 years ago

A+5 A=3 Basic algebra

weeeeeb [17]

A+5 is the same as 3+5 since A=3.
You would take five and count up by three, 6,7,8.
Your answer would be 8.

7 0

3 years ago

You have $90,000 for investment. You will invest S dollars in stocks and B dollars in bonds. You expect a 10% return on stocks a

SIZIF [17.4K]

The dollar amount for the return on stocks is $3375 and the dollar amount for the return on bonds is $1125.

Two equations can be derived from the question:

s + b = $90,000 equation 1

0.1s + 0.02b = $4500 equation two

$4500 = 0.05 x $90,000

The above equation is a simultaneous equation and it would be solved using the elimination method.

The following steps would be take to determine the value of b

Multiply equation 1 by 0.1

0.1s + 0.1b = 9000 equation 3

Subtract equation 2 from 3

0.08b = $4500

b = $56,250

The following step would be taken to determine the value of s

Substitute for b in equation 1

s + $56,250 = $90,000

$90,000 - $56,250 = s

s = $33,750

Dollar amount for the return on stocks = $33,750 x 0.1 = $3375

Dollar amount for the return on bonds = $56,250 x 0,02 = $1125

To learn more about simultaneous equations, please check: brainly.com/question/23589883?referrer=searchResults

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3 years ago

Blaire walked around her garden in the morning and saw that 18 of her tomato plants had tomatoes ready to pick. If this was 90%

vredina [299]

Blaire has 20 tomato plants altogether.

Step-by-step explanation:

Given,

Tomatoes plants ready to pick = 18

This represents 90% of total tomato plants.

Let,

x be the original number of tomato plants.

90% of x = 18

$\frac{90}{100}*x=18$

$0.9x=18$

Dividing both sides by 0.9

$\frac{0.9x}{0.9}=\frac{18}{0.9}$

$x=20$

Blaire has 20 tomato plants altogether.

Keywords: percentage, division

Learn more about division at:

#LearnwithBrainly

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3 years ago

Can someone please help me out Its really Important please marking brainliest

MakcuM [25]

The cylinder bale has greater volume and volume of pyramid is 54613m^2, air for each person is 10.92 m^2

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3 years ago

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